Control of arthropods in animals

Abstract

A method of controlling parasites in or on an animal comprising administering to the animal a parasiticidally effective, substantially non-emetic 1-arylpyrazole.

1 . A compound having the formula (II):  
     
       
         
         
             
             
         
       
     
     wherein: 
 R 21  is cyano, C(═S)NH 2 , C(═NOH)NH 2  or C(═NNH 2 )NH 2 ;  
 R 22  is S(O) m R 23 ;  
 R 23  is alkyl or haloalkyl;  
 R 24  is OH, HC(O)O—, R 25 C(O)O—, R 25 OC(O)O—, R 25 R 25 N—C(O)—O— or R 25 S(O) n C(O)O—;  
 R 25  is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, alkoxyalkyl, haloalkoxyalkyl, adamantyl, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, haloalkylaminoalkyl, di(haloalkyl)aminoalkyl, aryl optionally substituted, hetaryl optionally substituted, arylalkyl optionally substituted, hetarylalkyl optionally substituted, C 2 -C 6  alkenyl or C 2 -C 6  alkynyl;  
 or two groups R 25  form together with the nitrogen to which they are attached a 3 to 7 membered ring which optionally has one or more additional heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur;  
 X is nitrogen;  
 R 31  and R 32  are independently selected from the group consisting of halogen, hydrogen, CN, C 1 -C 3  alkyl and NO 2 ;  
 R 33  is selected from the group consisting of halogen, haloalkyl, haloalkoxy, —S(O) r CF 3  and SF 5 ;  
 m is selected from the group consisting of 0, 1 and 2; and  
 r is selected from the group consisting of 0, 1 and 2;  
 or a veterinarily acceptable salt thereof;  
 provided that when R 21  is cyano, then R 24  is not R 25 R 25 —N—C(O)—O.  
 
   
   
       2 . A compound according to  claim 1 , wherein: 
 R 21  is cyano;    R 22  is S(O) m R 23 ;    R 23  is haloalkyl;    R 24  is OH;    X is nitrogen;    R 31  and R 32  are independently selected from halogen;    R 33  is selected from the group consisting of halogen, haloalkyl, haloalkoxy, —S(O) r CF 3 , and —SF 5 ; and    m and r are independently selected from the group consisting of 0, 1, and 2.    
   
   
       3 . A compound according to  claim 2 , wherein R 23  is CF 3 .  
   
   
       4 . A compound having the formula (I):  
     
       
         
         
             
             
         
       
     
     wherein: 
 R 201  is cyano, C(O)alkyl, C(S)NH 2 , C(NH)OR 203 , C(NH)SR 203 , alkyl, C(═NOH)NH 2 , C(═NNH 2 )NH 2 , C(O)NH 2 , C(O)NHR 206 , C(O)NR 205 R 206 , haloalkyl or heterocyclyl selected from the group consisting of:  
                     
 optionally substituted by R 203 ;  
 R 202  is S(O) h R 203 , C 2 -C 6  alkenyl, C 2 -C 6  haloalkenyl, cycloalkyl, halocycloalkyl, cycloalkyl-alkyl, C 2 -C 6  alkynyl, nitro or imidazol-2-yl optionally substituted by alkyl, alkoxy, haloalkyl, halogen, cyano and/or nitro;  
 R 203  is alkyl or haloalkyl;  
 R 204  is —OH, R 205 O—, HC(O)O—, R 205 C(O)O—, R 205 OC(O)O—, NH 2 C(O)O—, R 205 NHC(O)O—, R 205 R 206 NC(O)O—, R 205 S(O) n C(O)O—, R 206 SO 2 O—, aryl-SO 2 O—, (C 4 -C 7 )-oxacycloalkyloxy, R 205 R 206 N—C(NR 205 )—O—, R 205 R 206 N—C(NH)—O—, R 205 NH—C(NR 205 )—O—, R 205 NH—C(NH)—O—, R 205 N═CH—O—, R 205 N═C(R 206 )—O—, R 205 NH—C(S)—O— or R 205 R 206 N—C(S)—O—;  
 R 205  is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, alkoxyalkyl, haloalkoxyalkyl, adamantyl, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, haloalkylaminoalkyl, di(haloalkyl)aminoalkyl, aryl optionally substituted, hetaryl optionally substituted, arylalkyl optionally substituted, hetarylalkyl optionally substituted, C 2 -C 6  alkenyl or C 2 -C 6  alkynyl;  
 R 206  is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, alkoxyalkyl, haloalkoxyalkyl, aryl optionally substituted, hetaryl optionally substituted, arylalkyl optionally substituted or hetarylalkyl optionally substituted;  
 or R 205  and R 206  form together with the nitrogen to which they are attached a 3 to 7 membered ring which optionally has one or more additional heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur;  
 X 1  is selected from the group consisting of nitrogen and C—R 212 ;  
 R 211 , and R 212  are independently selected from the group consisting of halogen, hydrogen, CN, C 1 -C 3  alkyl and NO 2 ;  
 R 213  is selected from the group consisting of halogen, haloalkyl, haloalkoxy, —S(O) k CF 3 , and —SF 5 , or R 213  forms a ring with R 214 ;  
 R 214  is hydrogen or together with R 213  forms a group OCF 2 O, CF 2 OCF 2 , CF 2 OCF 2 O or CF 2 CF 2 O, which group forms together with the carbons to which it is attached a five to six membered ring; and  
 h, k and n are independently selected from the group consisting of 0, 1, and 2;  
 or a veterinarily acceptable salt thereof.  
 
   
   
       5 . A compound according to  claim 4 , wherein: 
 R 201  is cyano, C(O)alkyl, C(S)NH 2 , alkyl, C(═NOH)NH 2  or C(═NNH 2 )NH 2 ;    R 202  is S(O) h R 203 , C 2 -C 3  alkenyl, C 2 -C 3  haloalkenyl, cycloalkyl, halocycloalkyl, cycloalkyl-alkyl or C 2 -C 3  alkynyl;    R 204  is —OH, R 205 O—, HC(O)O—, R 205 C(O)O—, R 205 OC(O)O—, NH 2 C(O)O—, R 205 NHC(O)O—, R 205 R 206 NC(O)O— or R 205 S(O) n C(O)O—;    R 205  is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, alkoxyalkyl, haloalkoxyalkyl, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, haloalkylaminoalkyl, or di(haloalkyl)aminoalkyl;    R 206  is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, alkoxyalkyl or haloalkoxyalkyl;    or R 205  and R 206  form together with the nitrogen to which they are attached a 3 to 7 membered ring which optionally has one or more additional heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur;    R 211  and R 212  are independently selected from the group consisting of halogen, hydrogen, CN and NO 2 ;    R 213  is selected from the group consisting of halogen, haloalkyl, haloalkoxy, —S(O) k CF 3 , and —SF 5 ; and    R 214  is hydrogen.    
   
   
       6 . A compound according to  claim 4 , wherein: 
 R 201  is cyano;    R 202  is S(O) h R 203 ;    R 203  is alkyl or haloalkyl;    R 204  is OH or R 205 O;    R 211  and R 212  are independently selected from the group consisting of halogen, hydrogen, CN and NO 2 ; and    R 213  is selected from the group consisting of halogen, haloalkyl, haloalkoxy, —S(O) k CF 3 , and —SF 5 .    
   
   
       7 . A compound according to  claim 4 , with the proviso that when R 201  is CN and R 202  is S(O) h R 203 , then R 204  is not R 205 O or R 205 R 206 N—C(O)—O.  
   
   
       8 . A composition comprising a parasiticidally effective, substantially non-emetic amount of a compound of formula (II) as defined in  claim 1 , or a veterinarily acceptable salt thereof, and a veterinarily acceptable carrier therefor.  
   
   
       9 . A composition comprising a parasiticidally effective, substantially non-emetic amount of a compound as defined in  claim 2 , and a veterinarily acceptable carrier therefor.  
   
   
       10 . A composition comprising a parasiticidally effective, substantially non-emetic amount of a compound as defined in  claim 3 , and a veterinarily acceptable carrier therefor.  
   
   
       11 . A composition comprising a parasiticidally effective, substantially non-emetic amount of a compound as defined in  claim 4 , and a veterinarily acceptable carrier therefor.  
   
   
       12 . A composition comprising a parasiticidally effective, substantially non-emetic amount of a compound as defined in  claim 5 , and a veterinarily acceptable carrier therefor.  
   
   
       13 . A composition comprising a parasiticidally effective, substantially non-emetic amount of a compound as defined in  claim 6 , and a veterinarily acceptable carrier therefor.  
   
   
       14 . A composition comprising a parasiticidally effective, substantially non-emetic amount of a compound as defined in  claim 7 , and a veterinarily acceptable carrier therefor.  
   
   
       15 . A method of controlling parasites in or on an animal in need of same comprising administering to said animal a parasiticidally effective, substantially non-emetic amount of a compound of formula (I):  
     
       
         
         
             
             
         
       
     
     wherein: 
 R 201  is cyano, C(O)alkyl, C(S)NH 2 , C(NH)OR 203 , C(NH)SR 203 , alkyl, C(═NOH)NH 2 , C(═NNH 2 )NH 2 , C(O)NH 2 , C(O)NHR 206 , C(O)NR 205 R 206 , haloalkyl or heterocyclyl selected from the group consisting of:  
                     
 optionally substituted by R 203 ;  
 R 202  is S(O) h R 203 , C 2 -C 6  alkenyl, C 2 -C 6  haloalkenyl, cycloalkyl, halocycloalkyl, cycloalkyl-alkyl, C 2 -C 6  alkynyl, nitro or imidazol-2-yl optionally substituted by alkyl, alkoxy, haloalkyl, halogen, cyano and/or nitro;  
 R 203  is alkyl or haloalkyl;  
 R 204  is —OH, R 205 O—, HC(O)O—, R 205 C(O)O—, R 205 OC(O)O—, NH 2 C(O)O—, R 205 NHC(O)O—, R 205 R 206 NC(O)O—, R 205 S(O) n C(O)O—, R 206 SO 2 O—, aryl-SO 2 O—, (C 4 -C 7 )-oxacycloalkyloxy, R 205 R 206 N—C(NR 205 )—O—, R 205 R 206 N—C(NH)—O—, R 205 NH—C(NR 205 )—O—, R 205 NH—C(NH)—O—, R 205 N═CH—O—, R 205 N═C(R 206 )—O—, R 205 NH—C(S)—O— or R 205 R 206 N—C(S)—O—;  
 R 205  is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, alkoxyalkyl, haloalkoxyalkyl, adamantyl, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, haloalkylaminoalkyl, di(haloalkyl)aminoalkyl, aryl optionally substituted, hetaryl optionally substituted, arylalkyl optionally substituted, hetarylalkyl optionally substituted, C 2 -C 6  alkenyl or C 2 -C 6  alkynyl;  
 R 206  is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, alkoxyalkyl, haloalkoxyalkyl, aryl optionally substituted, hetaryl optionally substituted, arylalkyl optionally substituted or hetarylalkyl optionally substituted;  
 or R 205  and R 206  form together with the nitrogen to which they are attached a 3 to 7 membered ring which optionally has one or more additional heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur;  
 X 1  is selected from the group consisting of nitrogen and C—R 212 ;  
 R 211  and R 212  are independently selected from the group consisting of halogen, hydrogen, CN, C 1 -C 3  alkyl and NO 2 ;  
 R 213  is selected from the group consisting of halogen, haloalkyl, haloalkoxy, —S(O) k CF 3 , and —SF 5 , or R 213  forms a ring with R 214 ;  
 R 214  is hydrogen or together with R 213  forms a group OCF 2 O, CF 2 OCF 2 , CF 2 OCF 2 O or CF 2 CF 2 O, which group forms together with the carbons to which it is attached a five to six membered ring; and  
 h, k and n are independently selected from the group consisting of 0, 1, and 2;  
 or a veterinarily acceptable salt thereof.  
 
   
   
       16 . A method according to  claim 15 , wherein the compound of formula (I) is administered in the form of a composition comprising a parasiticidally effective, substantially non-emetic amount of a compound of formula (I) or a veterinarily acceptable salt thereof and a veterinarily acceptable carrier therefor.  
   
   
       17 . A method according to  claim 15 , wherein the animal is a domestic animal.  
   
   
       18 . A method according to  claim 17 , wherein the domestic animal is a cat.  
   
   
       19 . A method according to  claim 17 , wherein the domestic animal is a dog.  
   
   
       20 . A method according to  claim 15 , wherein the compound of formula (I) or veterinarily acceptable salt thereof is administered orally to the animal in a dose of from 0.1 to 500 mg/kg.  
   
   
       21 . A method according to  claim 20 , wherein the dose administered is from 1 to 100 mg/kg.  
   
   
       22 . A method according to  claim 21 , wherein the dose administered is from 1 to 50 mg/kg.  
   
   
       23 . A method according to  claim 22 , wherein the dose administered is from 2 to 25 mg/kg.  
   
   
       24 . A method according to  claim 23 , wherein the dose administered is from 3 to 15 mg/kg.