USRE38330EExpiredUtility

Preventing and reversing advanced glycosylation endproducts

45
Assignee: ALTEON INCPriority: Jan 18, 1995Filed: Aug 12, 1999Granted: Nov 25, 2003
Est. expiryJan 18, 2015(expired)· nominal 20-yr term from priority
A61K 31/428C07D 277/40A61Q 11/00C07D 277/22G01N 33/6842A61Q 19/08A61K 31/425A61K 8/49A61Q 19/00A61K 31/426
45
PatentIndex Score
7
Cited by
49
References
234
Claims

Abstract

The present invention relates to compositions and methods for inhibiting and reversing nonenzymatic cross-linking (protein aging). Accordingly, a composition is disclosed which comprises a thiazolium compound capable of inhibiting, and to some extent reversing, the formation of advanced glycosylation endproducts of target proteins by reacting with the carbonyl moiety of the early glycosylation product of such target proteins formed by their initial glycosylation. The method comprises contacting the target protein with the composition. Both industrial and therapeutic applications for the invention are envisioned, as food spoilage and animal protein aging can be treated. A novel immunoassay for detection of the reversal of the nonenzymatic crosslinking is also disclosed.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
       1. A composition for inhibiting the advanced glycosylation of a target protein in the oral cavity comprising an effective amount of a compound  one or more compounds selected from the group consisting of  compounds of the formula:                    
       wherein 
       R 1  and R 2  are independently selected from the group consisting of  hydrogen, hydroxy(lower) alkyl, lower acyloxy(lower)alkyl, or lower alkyl, or R 1  and R 2  together with their ring carbons may be  form an aromatic fused ring;  
       Z is hydrogen or an amino group;  
       Y is  
       hydrogen, or   
       a group of the formula  
       
         
           —CH 2 C(═O)—R  
         
       
       wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group, and wherein, when R is aryl, at least one of R 1    and R   2    is other than hydrogen and R   1    and R   2    are not part of a un - substituted fused phenyl ring;  or  
       a group of the formula —CH 2 R′ 
       wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and 
       X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion; and mixtures thereof, and a carrier therefor  pharmaceutically acceptable anion,  
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups;  and  
       a pharmaceutically acceptable carrier therefor. 
     
     
       2. The composition of  claim 1  wherein said compound has the formula wherein Y is a 2-phenyl-2-oxoethyl group  R is aryl. 
     
     
       3. The composition of claim  2   1 wherein said compound is 3-(2-phenyl-2-oxoethyl)thiazolium bromide or another biologically acceptable salt thereofX is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       4. The composition of  claim 2  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-4-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       5. The composition of  claim 2  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-4,5-dimethylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       6. The composition of  claim 2  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-5-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       7. The composition of claim  2   1 wherein said compound is 3-(2-phenyl-2-oxoethyl)-benzothiazolium bromide or another biologically acceptable salt thereofX is a halide ion. 
     
     
       8. The composition of  claim 1  wherein Y is a 2-amino-2-oxoethyl group. 
     
     
       9. The composition of  claim 8  wherein said compound is a 3-(2-amino-2-oxoethyl)-4-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       10. The composition of  claim 8  wherein said compound is a 3-(2,-amino-2-oxoethyl)benzothiazolium bromide or another biologically acceptable salt thereof . 
     
     
       11. The composition of  claim 8  wherein said compound is a 3-(2-amino-2-oxoethyl)-4-methyl-5-(2-hydroxyethyl)thiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       12. The composition of  claim 1  wherein said compound is a 3-(2-methyl-2-oxoethyl)thiazolium chloride or another biologically acceptable  salt thereof . 
     
     
       13. A pharmaceutical composition for administration to an animal to inhibit the advanced glycosylation of a target protein within said animal , comprising a pharmaceutically effective amount of a compound  one or more compounds selected from the group consisting of  compounds of the formula:                   
       wherein 
       R 1  and R 2  are independently selected from the group consisting of  hydrogen, hydroxy(lower)alkyl, (lower)acyloxy(lower)alkyl, or lower alkyl, or R 1  and R 2  together with their ring carbons may be  form an aromatic fused ring;  
       Z is hydrogen or an amino group;  
       Y is  
       hydrogen, or   
       a group of the formula —CH 2 C(═O)R  
       wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or an aryl group and wherein, when R is aryl, at least one of R 1    and R   2    is other than hydrogen and R   1    and R   2    are not part of a un - substituted fused phenyl ring;  or  
       a group of the formula —CH 2 R′ 
       wherein R′ is hydrogen, or a lower alkyl, lower alkynyl, or aryl group; and  
       X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion; and mixtures thereof,  pharmaceutically acceptable anion,  
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups:  and  
       a pharmaceutically acceptable carrier therefor. 
     
     
       14. The composition of  claim 13  wherein said compound has the formula wherein Y is a 2-phenyl-2-oxoethyl group  R is aryl. 
     
     
       15. The composition of claim  14   13 wherein said compound is 3-(2-phenyl-2-oxoethyl)thiazolium bromide or another biologically acceptable salt thereofX is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       16. The composition of  claim 14  wherein said compound is a 3-(2-phenyl-2-oxoethyl)4-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       17. The composition of  claim 14  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-4,5-dimethylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       18. The composition of  claim 14  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-5-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       19. The composition of claim  14   13 wherein said compound is 3-(2-phenyl-2-oxoethyl)-benzothiazolium bromide or another biologically acceptable salt thereofX is a halide ion. 
     
     
       20. The composition of  claim 14  wherein Y is a 2-amino-2-oxoethyl group. 
     
     
       21. The composition of  claim 20  wherein said compound is a 3-(2-amino-2-oxoethyl)-4-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       22. The composition of  claim 20  wherein said compound is a 3-(2-amino-2-oxoethyl)benzothiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       23. The composition of  claim 20  wherein said compound is a 3-(2-amino-2-oxoethyl)-4-methyl-5-(2-hydroxyethyl)thiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       24. The composition of  claim 13  wherein said compound is a 3-(2-methyl-2-oxoethyl)thiazolium chloride or another biologically acceptable  salt thereof . 
     
     
       25. A method for inhibiting the advanced glycosylation of a target protein comprising contacting the target protein with an effective amount of composition comprising a compound  one or more compounds selected from the group consisting of  compounds of the formula:                    
       wherein 
       R 1  and R 2  are independently selected from the group consisting of  hydrogen, hydroxy(lower) alkyl, lower acyloxy(lower)alkyl, or lower alkyl, or R 1  and R 2  together with their ring carbons may be  form an aromatic fused ring;  
       Z is hydrogen or an amino group;  
       Y is  
       hydrogen, or   
       a group of the formula  
       
         
           —CH 2 C(═O)—R  
         
       
       wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       a group of the formula —CH 2 —R′ 
       wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       X is a halide, rosylate, methanesulfonate or mesitylenesulfonate ion; and mixtures thereof, and a carrier therefor  pharmaceutically acceptable anion,  
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups .  
     
     
       26. The method of  claim 25  wherein said compound has the formula wherein Y is a 2-phenyl-2-oxoethyl group  R is aryl. 
     
     
       27. The method of  claim 26  wherein said compound is a 3-(2-phenyl-2-oxoethyl)thiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       28. The method of  claim 26  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-4-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       29. The method of  claim 26  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-4,5-dimethylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       30. The method of  claim 26  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-5-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       31. The method of  claim 26  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-benzothiazolium bromide, or another biologically acceptable  salt thereof . 
     
     
       32. The method of  claim 25  wherein Y is a 2-amino-2-oxoethyl group. 
     
     
       33. The method of  claim 32  wherein said compound is a 3-(2-amino-2-oxoethyl)-4-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       34. The method of  claim 32  wherein said compound is a 3-(2-amino-2-oxoethyl)benzothiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       35. The method of  claim 32  wherein said compound is a 3-(2-amino-2-oxoethyl)-4-methyl-5-(2-hydroxyethyl)thiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       36. The method of  claim 25  wherein said compound is a 3-(2-methyl-2-oxoethyl)thiazolium chloride or another biologically acceptable  salt thereof . 
     
     
       37. A method for treating diabetes or treating or ameliorating adverse sequelae of diabetes in an animal to inhibit the formation of advanced glycosylation endproducts of a target protein within said animal , said method comprising administering an  a diabetes treating or adverse sequelae of diabetes treating or ameliorating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising a compound  one or more compounds selected from the group consisting of  compounds of the formula:                   
       wherein 
       R 1  and R 2  are independently selected from the group consisting of  hydrogen, hydroxy (lower)alkyl, lower acyloxy(lower)alkyl, or lower alkyl or R ‘ and R 2  together with their ring carbons may be  form an aromatic fused ring;  
       Z is hydrogen or an amino group;  
       Y is  
       hydrogen, or   
       a group of the formula  
       
         
           —CH 2 C(═O)—R  
         
       
       wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       a group of the formula CH 2 —R′ 
       wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion; and mixtures thereof, and a pharmaceutically acceptable carrier therefor  pharmaceutically acceptable anion,  
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups .  
     
     
       38. The method of  claim 37  wherein said compound has the formula wherein Y is a 2-phenyl-2-oxoethyl group  R is aryl. 
     
     
       39. The method of  claim 38  wherein said compound is 3-(2-phenyl-2-oxoethyl)thiazolium bromide or another biologically acceptable  has the formula wherein Y is a  2 - phenyl -   2   - oxoethyl group  salt thereof . 
     
     
       40. The method of  claim 38  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-4-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       41. The method of  claim 38  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-4,5-dimethylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       42. The method of  claim 38  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-5-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       43. The method of  claim 38  wherein said compound is a 3-(2-phenyl-2-oxoethyl)-benzothiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       44. The method of  claim 37  wherein Y is a 2-amino-2-oxoethyl group. 
     
     
       45. The method of  claim 44  wherein said compound is a 3-(2-amino-2-oxoethyl)-4-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       46. The method of  claim 44  wherein said compound is a 3-(2-amino-2-oxoethyl)benzothiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       47. The method of  claim 45  wherein said compound is a 3-(2-amino-2-oxoethyl)-4-methyl-5-(2-hydroxyethyl)thiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       48. The method of  claim 37  wherein said compound is a 3-(2-methyl-2-oxoethyl)thiazolium chloride or another biologically acceptable salt thereof. . 
     
     
       49. A method of inhibiting the discoloration of teeth resulting from non-enzymatic browning in the oral cavity  which comprises administration of an amount  a teeth discloration inhibiting effective to inhibit the formation of advanced glycosylation endproducts  amount of a composition comprising a compound  one or more compounds selected from the group consisting of  compounds of the formula:                   
       wherein 
       R 1  and R 2  are independently selected from the group consisting of  hydrogen, hydroxy(lower)alkyl, lower acyloxy(lower)alkyl, lower acyloxy(lower)alkyl, lower acyloxy(lower)alkyl, or lower alkyl, or R 1  and R 2  together with their ring carbons may be  form an aromatic fused ring;  
       Z is hydrogen or an amino group;  
       Y is  
       hydrogen, or   
       a group of the formula  
       
         
           —CH 2 C(═O)—R  
         
       
       wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       a group of the formula CH 2 —R′ 
       wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion; and mixtures thereof, and a pharmaceutically acceptable carrier therefor  an anion, wherein said fused aromatic rings or aryl groups can be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di( loweralkyl ) amino groups .  
     
     
       50. A compound of the formula:                    
       wherein Y and Z are both amino groups and R 1  and R 2  are independently selected from the group consisting of hydrogen, hydroxy(lower)alkyl, lower alkyl, or R 1  and R 2  together with their ring carbons may be an aromatic fused ring;  
       and X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion  an anion.  
     
     
       51. The compound according to  claim 50  which is a 2,3-diaminothiazolium mesitylenesulfonate . 
     
     
       52. The compound according to  claim 50  which is a 2,3-diaminobenzothiazolium mesitylenesulfonate . 
     
     
       53. A compound of the formula:                    
       wherein R 1  and R 2  are independently selected from the group consisting of  hydrogen, hydroxy(lower)alyl, lower acyloxy(lower)alkyl, or lower alkyl, or R 1  and R 2  together with their ring carbons may be an aromatic fused ring;  
       Z is hydrogen or an amino group;  
       Y is an alkynylmethyl group; and  
       X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion  an anion.  
     
     
       54. A compound of the formula:                    
       wherein R 1  and R 2  are independently selected from the group consisting of  hydrogen, hydroxy(lower)alkyl, lower acyloxy(lower)alkyl, or lower alkyl, or R 1  and R 2  together with their ring carbons may be  form an aromatic fused ring;  
       Z is hydrogen or an amino group;  
       Y is a 2-amino-2-oxoethyl group; and  
       X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion  an anion.  
     
     
       55. The compound according to  claim 54  which is a 3-(2-amino-2-oxoethyl)-4-methylthiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       56. The compound according to  claim 54  which is a 3-(2-amino-2-oxoethyl)benzothiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       57. The compound according to  claim 54  which is a 3-(2-amino-2-oxoethyl)-4-methyl-5-(2-hydroxyethyl)thiazolium bromide or another biologically acceptable  salt thereof . 
     
     
       58. A method of treating or ameliorating kidney damage in an animal, said method comprising administering an kidney treating or ameliorating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring:    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       59. The method of  claim 58  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       60. The method of  claim 58  wherein Z is hydrogen. 
     
     
       61. The method of  claim 58  wherein R is aryl. 
     
     
       62. The method of  claim 61  wherein Z is hydrogen. 
     
     
       63. The method of  claim 61  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       64. The method of  claim 61  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       65. The method of  claim 61  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       66. The method of  claim 61  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       67. The method of  claim 58  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       68. The method of  claim 58 , comprising treating or preventing kidney damage in a human. 
     
     
       69. A method of treating or ameliorating damage to blood vasculature in an animal, said method comprising administering an blood vasculature treating or ameliorating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       70. The method of  claim 69  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       71. The method of  claim 69  wherein Z is hydrogen. 
     
     
       72. The method of  claim 69  wherein R is aryl. 
     
     
       73. The method of  claim 72  wherein Z is hydrogen. 
     
     
       74. The method of  claim 72  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       75. The method of  claim 72  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       76. The method of  claim 72  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       77. The method of  claim 72  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       78. The method of  claim 69  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       79. The method of  claim 69 , comprising treating or preventing damage to blood vasculature in a human. 
     
     
       80. A method of improving the elasticity or reducing wrinkles of the skin of an animal, said method comprising topically administering an skin elasticity or wrinkle reducing effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a biologically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       81. The method of  claim 80  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       82. The method of  claim 80  wherein Z is hydrogen. 
     
     
       83. The method of  claim 80  wherein R is aryl. 
     
     
       84. The method of  claim 83  wherein Z is hydrogen. 
     
     
       85. The method of  claim 83  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       86. The method of  claim 83  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       87. The method of  claim 83  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       88. The method of  claim 83  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       89. The method of  claim 80  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       90. The method of  claim 80  comprising improving the elasticity or reducing wrinkles of the skin of a human. 
     
     
       91. A topical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula —CH 
         2 
         R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a biologically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups; and    
       
         a pharmaceutically acceptable carrier therefor suitable for topical administration. 
       
     
     
       92. The topical composition of  claim 91  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       93. The topical composition of  claim 91  wherein Z is hydrogen. 
     
     
       94. The topical composition of  claim 91 , wherein, when R is aryl, at least one of R 1    and R   2    is other than hydrogen and R   1    and R   2    are not part of a un - substituted fused phenyl ring.   
     
     
       95. The topical composition of  claim 94  wherein Z is hydrogen. 
     
     
       96. The topical composition of  claim 95  wherein R is aryl. 
     
     
       97. The topical composition of  claim 96  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl ) thiazolium.   
     
     
       98. The topical composition of  claim 96  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       99. The topical composition of  claim 96  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       100. The topical composition of  claim 96  wherein said compound is  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium bromide.   
     
     
       101. The topical composition of  claim 96  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       102. The topical composition of  claim 96  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       103. The topical composition of  claim 96  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       104. The topical composition of  claim 103  wherein said compound is a  3 -(   2   - amino -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       105. The topical composition of  claim 103  wherein said compound is a  3 -(   2 , - amino -   2   - oxoethyl ) benzothiazolium.   
     
     
       106. The topical composition of  claim 103  wherein said compound is a  3 -(   2   - amino -   2   - oxoethyl )-   4   - methyl -   5   -(   2   - hydroxyethyl ) thiazolium.   
     
     
       107. A method of treating or ameliorating hypertension in an animal, said method comprising administering an hypertension treating or ameliorating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically or biologically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       108. The method of  claim 107  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       109. The method of  claim 107  wherein X is a halide ion. 
     
     
       110. The method of  claim 107  wherein Z is hydrogen. 
     
     
       111. The method of  claim 107  wherein R is aryl. 
     
     
       112. The method of  claim 111  wherein Z is hydrogen. 
     
     
       113. The method of  claim 111  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       114. The method of  claim 111  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       115. The method of  claim 111  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       116. The method of  claim 111  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       117. The method of  claim 107  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       118. The method of  claim 107 , comprising treating or ameliorating hypertension in a human. 
     
     
       119. A method of treating or ameliorating retinopathy in an animal, said method comprising administering an retinopathy treating or ameliorating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       120. The method of  claim 119  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       121. The method of  claim 119  wherein X is a halide ion. 
     
     
       122. The method of  claim 119  wherein Z is hydrogen. 
     
     
       123. The method of  claim 119  wherein R is aryl. 
     
     
       124. The method of  claim 123  wherein Z is hydrogen. 
     
     
       125. The method of  claim 123  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       126. The method of  claim 123  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       127. The method of  claim 123  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       128. The method of  claim 123  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       129. The method of  claim 120  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       130. The method of  claim 120 , comprising treating or ameliorating retinopathy in a human. 
     
     
       131. A method of treating damage to lens proteins in an animal, said method comprising administering an lens damage treating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2    C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       132. The method of  claim 131  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       133. The method of  claim 131  wherein Z is hydrogen. 
     
     
       134. The method of  claim 131  wherein R is aryl. 
     
     
       135. The method of  claim 134  wherein Z is hydrogen. 
     
     
       136. The method of  claim 134  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       137. The method of  claim 134  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       138. The method of  claim 134  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       139. The method of  claim 134  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       140. The method of  claim 131  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       141. The method of  claim 131 , comprising treating damage to lens proteins in a human. 
     
     
       142. A method of treating or ameliorating peripheral neuropathy in an animal, said method comprising administering an neuropathy treating or ameliorating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       143. The method of  claim 142  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       144. The method of  claim 142  wherein Z is hydrogen. 
     
     
       145. The method of  claim 142  wherein R is aryl. 
     
     
       146. The method of  claim 145  wherein Z is hydrogen. 
     
     
       147. The method of  claim 145  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       148. The method of  claim 145  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       149. The method of  claim 145  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       150. The method of  claim 145  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       151. The method of  claim 142  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       152. The method of  claim 142 , comprising treating or ameliorating peripheral neuropathy in a human. 
     
     
       153. A composition adapted for ocular administration comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula —CH 
         2 
         R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups; and    
       
         a pharmaceutically acceptable carrier therefor suitable for topical administration. 
       
     
     
       154. The ocular composition of  claim 153  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       155. The ocular composition of  claim 153  wherein X is a halide ion. 
     
     
       156. The ocular composition of  claim 153  wherein Z is hydrogen. 
     
     
       157. The ocular composition of  claim 153 , wherein, when R is aryl, at least one of R 1    and R   2    is other than hydrogen and R   1    and R   2    are not part of a un - substituted fused phenyl ring.   
     
     
       158. The ocular composition of  claim 157  wherein Z is hydrogen. 
     
     
       159. The ocular composition of  claim 158  wherein R is aryl. 
     
     
       160. The ocular composition of  claim 158  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl ) thiazolium.   
     
     
       161. The ocular composition of  claim 158  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       162. The ocular composition of  claim 158  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       163. The ocular composition of  claim 158  wherein said compound is  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium bromide.   
     
     
       164. The ocular composition of  claim 158  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       165. The ocular composition of  claim 158  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       166. The ocular composition of  claim 153  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       167. The ocular composition of  claim 166  wherein said compound is a  3 -(   2   - amino -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       168. The ocular composition of  claim 166  wherein said compound is a  3 -(   2 , - amino -   2   - oxoethyl ) benzothiazolium.   
     
     
       169. The ocular composition of  claim 166  wherein said compound is a  3 -(   2   - amino -   2   - oxoethyl )-   4   - methyl -   5   -(   2   - hydroxyethyl ) thiazolium.   
     
     
       170. The composition of  claim 1 , wherein said compounds comprise up to  10 %  of the composition.   
     
     
       171. The composition of  claim 13  wherein Z is hydrogen. 
     
     
       172. The composition of  claim 14  wherein Z is hydrogen. 
     
     
       173. The composition of  claim 13  wherein said compound is  3 -(   2   - phenyl -   2   - oxoethyl )   4   - methylthiazolium bromide.   
     
     
       174. The composition of  claim 13  wherein said compound is  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium bromide.   
     
     
       175. The composition of  claim 13  wherein said compound is  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium bromide.   
     
     
       176. The composition of  claim 13  wherein said compound is  3 -(   2   - amino -   2   - oxoethyl )-   4   - methylthiazolium bromide.   
     
     
       177. The composition of  claim 13  wherein said compound is  3 -(   2   - amino -   2   - oxoethyl ) benzothiazolium bromide.   
     
     
       178. The composition of  claim 13  wherein said compound is  3 -(   2   - amino -   2   - oxoethyl )-   4   - methyl -   5   -(   2   - hydroxyethyl ) thiazolium bromide.   
     
     
       179. The composition of  claim 13  wherein said compound is a  3 -(   2   - methyl -   2   - oxoethyl ) thiazolium chloride.   
     
     
       180. The method of  claim 37 , comprising treating diabetes or treating or ameliorating adverse sequelae of diabetes in a human. 
     
     
       181. The method of  claim 37  wherein Z is hydrogen. 
     
     
       182. The method of  claim 38  wherein Z is hydrogen. 
     
     
       183. A method of treating or ameliorating cataracts in an animal, said method comprising administering an lens damage treating or ameliorating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       184. The method of  claim 183  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       185. The method of  claim 183  wherein Z is hydrogen. 
     
     
       186. The method of  claim 183  wherein R is aryl. 
     
     
       187. The method of  claim 186  wherein Z is hydrogen. 
     
     
       188. The method of  claim 186  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       189. The method of  claim 186  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       190. The method of  claim 186  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       191. The method of  claim 186  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       192. The method of  claim 183  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       193. The method of  claim 183 , comprising treating or ameliorating damage to lens proteins in a human. 
     
     
       194. A method of treating or ameliorating damage to a tissue caused by contact with elevated levels of reducing sugars in an animal, said method comprising administering an treating or ameliorating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′  
         is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       195. The method of  claim 194  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       196. The method of  claim 194  wherein Z is hydrogen. 
     
     
       197. The method of  claim 194  wherein R is aryl. 
     
     
       198. The method of  claim 197  wherein Z is hydrogen. 
     
     
       199. The method of  claim 197  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       200. The method of  claim 197  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       201. The method of  claim 197  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       202. The method of  claim 197  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       203. The method of  claim 194  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       204. The method of  claim 194 , comprising administering the compound intraperitoneally. 
     
     
       205. A method of treating or ameliorating stroke in an animal, said method comprising administering a stroke treating or ameliorating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       206. The method of  claim 205  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       207. The method of  claim 205  wherein Z is hydrogen. 
     
     
       208. The method of  claim 205  wherein R is aryl. 
     
     
       209. The method of  claim 208  wherein Z is hydrogen. 
     
     
       210. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       211. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       212. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       213. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       214. The method of  claim 205  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       215. A method of treating or ameliorating osteoarthritis in an animal, said method comprising administering a osteoarthritis treating or ameliorating effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       216. The method of  claim 205  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       217. The method of  claim 205  wherein Z is hydrogen. 
     
     
       218. The method of  claim 205  wherein R is aryl. 
     
     
       219. The method of  claim 208  wherein Z is hydrogen. 
     
     
       220. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       221. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       222. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       223. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       224. The method of  claim 205  wherein Y is a  2 - amino -   2   - oxoethyl group.   
     
     
       225. A method of increasing red blood cell deformability in an animal, said method comprising administering a red blood cell deformability increasing effective amount of a pharmaceutical composition, said pharmaceutical composition comprising one or more compounds selected from compounds of the formula:                    
       
         wherein  
       
         R   1    and R   2    are independently hydrogen, hydroxy  ( lower ) alkyl, lower acyloxy ( lower ) alkyl, or lower alkyl, or R   1    and R   2    together with their ring carbons form an aromatic fused ring;    
       
         Z is hydrogen or an amino group;  
       
       
         Y is  
       
       
         hydrogen,  
       
       
         a group of the formula  
       
       
         
             —CH   2   C (═ O )— R    
         
       
       
         wherein R is a lower alkyl, lower alkoxy, hydroxy, amino or aryl group; or  
       
       
         a group of the formula CH 
         2 
         —R′ 
       
       
         wherein R′ is hydrogen, or a lower alkyl, lower alkynyl or aryl group; and  
       
       
         X is a pharmaceutically acceptable anion,  
       
         wherein the fused aromatic rings or aryl groups of R   1   , R   2   , R or R′ may be substituted with up to two groups selected from halo, hydroxy, loweralkoxy or di ( loweralkyl ) amino groups.   
     
     
       226. The method of  claim 205  wherein X is a halide, tosylate, methanesulfonate or mesitylenesulfonate ion. 
     
     
       227. The method of  claim 205  wherein Z is hydrogen. 
     
     
       228. The method of  claim 205  wherein R is aryl. 
     
     
       229. The method of  claim 208  wherein Z is hydrogen. 
     
     
       230. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4   - methylthiazolium.   
     
     
       231. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   4 , 5   - dimethylthiazolium.   
     
     
       232. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )-   5   - methylthiazolium.   
     
     
       233. The method of  claim 208  wherein said compound is a  3 -(   2   - phenyl -   2   - oxoethyl )- benzothiazolium.   
     
     
       234. The method of  claim 205  wherein Y is a  2 - amino -   2   - oxoethyl group.

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