Benzimidazolone compounds

Abstract

Disclosed are compounds of the formula (I): wherein A, B, C, M 1 -M 4 , R, R 1 , R 2 and n are as described herein.

1 . A compound of the formula (I):  
       
         
           
           
               
               
           
         
         wherein  
         A is a saturated or partially saturated ring;  
         R is hydrogen, C 1-10  alkyl, C 3-12  cycloalkyl, C 3-12  cycloalkylC 1-4 alkyl-, C 1-10  alkoxy, C 3-12  cycloalkoxy-, C 1-10  alkyl substituted with 1-3 halogen, C 3-12  cycloalkyl substituted with 1-3 halogen, C 3-12  cycloalkylC 1-4 alkyl- substituted with 1-3 halogen, C 1-10  alkoxy substituted with 1-3 halogen, C 3-12  cycloalkoxy- substituted with 1-3 halogen, —COOV 1 , —C 1-4 COOV 1 , —CH 2 OH, —SO 2 N(V 1 ) 2 , hydroxyC 1-10 alkyl-, hydroxyC 3-10 cycloalkyl-, cyanoC 1-10 alkyl-, cyanoC 3-10 cycloalkyl-, —CON(V 1 ) 2 , NH 2 SO 2 C 1-4 alkyl-, NH 2 SOC 1-4 alkyl-, sulfonylaminoC 1-10 alkyl-, diaminoalkyl-, -sulfonylC 1-4 alkyl, a 6-membered heterocyclic ring, a 6-membered heteroaromatic ring, a 6-membered heterocyclicC 1-4 alkyl-, a 6-membered heteroaromaticC 1-4 alkyl-, a 6-membered aromatic ring, a 6-membered aromaticC 1-4 alkyl-, a 5-membered heterocyclic ring optionally substituted with an oxo or thio, a 5-membered heteroaromatic ring, a 5-membered heterocyclicC 1-4 alkyl- optionally substituted with an oxo or thio, a 5-membered heteroaromaticC 1-4 alkyl-, —C 1-5 (═O)W 1 , —C 1-5 (═NH)W 1 , —C 1-5 NHC(═O)W 1 , —C 1-5 NHS(═O) 2 W 1 , —C 1-5 NHS(═O)W 1 , wherein W 1  is hydrogen, C 1-10  alkyl, C 3-12  cycloalkyl, C 1-10  alkoxy, C 3-12  cycloalkoxy, —CH 2 OH, amino, C 1-4 alkylamino-, diC 1-4 alkylamino-, or a 5-membered heteroaromatic ring optionally substituted with 1-3 lower alkyl;  
         wherein each V 1  is independently selected from H, C 1-6  alkyl, C 3-6  cycloalkyl, benzyl and phenyl;  
         n is an integer from 0 to 3;  
         M 1 , M 2 , M 3  and M 4  are each independently N, NH, CH or CH 2 , up to a maximum of 3 N or NH;  
         D, B and C are independently hydrogen, C 1-10  alkyl, C 3-12  cycloalkyl, C 1-10  alkoxy, C 3-12  cycloalkoxy, —CH 2 OH, —NHSO 2 , hydroxyC 1-10 alkyl-, aminocarbonyl-, C 1-4 alkylaminocarbonyl-, diC 1-4 alkylaminocarbonyl-, acylamino-, acylaminoalkyl-, amide, sulfonylaminoC 1-10 alkyl-, or D-B can together form a C 2-6  bridge, or B-C can together form a C 3-7  bridge, or D-C can together form a C 1-5  bridge;  
         Z is selected from the group consisting of a bond, straight or branched C 1-6  alkylene, —NH—, —CH 2 O—, —CH 2 NH—, —CH 2 N(CH 3 )—, —NHCH 2 —, —CH 2 CONH—, —NHCH 2 CO—, —CH 2 CO—, —COCH 2 —, —CH 2 COCH 2 —, —CH(CH 3 )—, —CH═, —O— and —HC═CH—, wherein the carbon and/or nitrogen atoms are unsubstituted or substituted with one or more lower alkyl, hydroxy, halo or alkoxy group;  
         R 1  is selected from the group consisting of hydrogen, C 1-10  alkyl, C 3-12 cycloalkyl, C 2-10 alkenyl, amino, C 1-10 alkylamino-, C 3-12 cycloalkylamino-, —COOV 1 , —C 1-4 COOV 1 , cyano, cyanoC 1-10 alkyl-, cyanoC 3-10 cycloalkyl-, NH 2 SO 2 —, NH 2 SO 2 C 1-4 alkyl-, NH 2 SOC 1-4 alkyl-, aminocarbonyl-, C 1-4 alkylaminocarbonyl-, diC 1-4 alkylaminocarbonyl-, benzyl, C 3-12  cycloalkenyl-, a monocyclic, bicyclic or tricyclic aryl or heteroaryl ring, a hetero-monocyclic ring, a hetero-bicyclic ring system, and a spiro ring system of the formula (II):  
         
           
             
             
                 
                 
             
           
         
         wherein X 1  and X 2  are independently selected from the group consisting of NH, O, S and CH 2 ; and wherein said alkyl, cycloalkyl, alkenyl, C 1-10 alkylamino-, C 3-12 cycloalkylamino-, or benzyl of R 1  is optionally substituted with 1-3 substituents selected from the group consisting of halogen, hydroxy, C 1-10  alkyl, C 1-10  alkoxy, nitro, trifluoromethyl-, cyano, —COOV 1 , —C 1-4 COOV 1 , cyanoC 1-10 alkyl-, —C 1-5 (═O)W 1 , —C 1-5 NHS(═O) 2 W 1 , —C 1-5 NHS(═O)W 1 , a 5-membered heteroaromaticC 0-4 alkyl-, phenyl, benzyl, benzyloxy, said phenyl, benzyl, and benzyloxy optionally being substituted with 1-3 substituents selected from the group consisting of halogen, C 1-10  alkyl-, C 1-10  alkoxy-, and cyano; and wherein said C 3-12  cycloalkyl, C 3-12  cycloalkenyl, monocyclic, bicyclic or tricyclic aryl, heteroaryl ring, hetero-monocyclic ring, hetero-bicyclic ring system, or spiro ring system of the formula (II) is optionally substituted with 1-3 substituents selected from the group consisting of halogen, C 1-10  alkyl, C 1-10  alkoxy, nitro, trifluoromethyl-, phenyl, benzyl, phenyloxy and benzyloxy, wherein said phenyl, benzyl, phenyloxy or benzyloxy is optionally substituted with 1-3 substituents selected from the group consisting of halogen, C 1-10  alkyl, C 1-10  alkoxy, and cyano;  
         R 2  is selected from the group consisting of hydrogen, C 1-10  alkyl, C 3-12  cycloalkyl- and halogen, said alkyl or cycloalkyl optionally substituted with an oxo, amino, alkylamino or dialkylamino group;  
         or a pharmaceutically acceptable salt thereof or solvate thereof.  
       
     
     
         2 . A compound of  claim 1 , wherein R is —CH 2 C═ONH 2 , —C(NH)NH 2 , pyridylmethyl, cyclopentyl, cyclohexyl, furanylmethyl, —C(═O)CH 3 , —CH 2 CH 2 NHC(═O)CH 3 , —SO 2 CH 3 , CH 2 CH 2 NHSO 2 CH 3 , furanylcarbonyl-, methylpyrrolylcarbonyl-, diazolecarbonyl-, azolemethyl-, trifluoroethyl-, hydroxyethyl-, cyanomethyl-, oxo-oxazolemethyl-, or diazolemethyl-.  
     
     
         3 . A compound of  claim 1 , wherein ZR 1  is cyclohexylethyl-, cyclohexylmethyl-, cyclopentylmethyl-, dimethylcyclohexylmethyl-, phenylethyl-, pyrrolyltrifluoroethyl-, thienyltrifluoroethyl-, pyridylethyl-, cyclopentyl-, cyclohexyl-, methoxycyclohexyl-, tetrahydropyranyl-, propylpiperidinyl-, indolylmethyl-, pyrazoylpentyl-, thiazolylethyl-, phenyltrifluoroethyl-, hydroxyhexyl-, methoxyhexyl-, isopropoxybutyl-, hexyl-, or oxocanylpropyl-.  
     
     
         4 . A compound of  claim 1 , wherein at least one of ZR 1  or R is —CH 2 COOV 1 , tetrazolylmethyl-, cyanomethyl-, NH 2 SO 2 methyl-, NH 2 SOmethyl-, aminocarbonylmethyl-, C 1-4 alkylaminocarbonylmethyl-, or diC 1-4 alkylaminocarbonylmethyl-.  
     
     
         5 . A compound of  claim 1 , wherein ZR 1  is 3,3 diphenylpropyl optionally substituted at the 3 carbon of the propyl with —COOV 1 , tetrazolylC 0-4 alkyl-, cyano-, aminocarbonyl-, C 1-4 alkylaminocarbonyl-, or diC 1-4 alkylaminocarbonyl-.  
     
     
         6 . A compound of the formula (IA):  
       
         
           
           
               
               
           
         
         wherein  
         A is a saturated or partially saturated ring;  
         n is an integer from 0 to 3;  
         Z is selected from the group consisting of a bond, —CH 2 —, —NH—, —CH 2 O—, —CH 2 CH 2 —, —CH 2 NH—, —CH 2 N(CH 3 )—, —NHCH 2 —, —CH 2 CONH—, —NHCH 2 CO—, —CH 2 CO—, —COCH 2 —, —CH 2 COCH 2 —, —CH(CH 3 )—, —CH═, and —HC═CH—, wherein the carbon and/or nitrogen atoms are unsubstituted or substituted with a lower alkyl, halogen, hydroxy or alkoxy group;  
         R is selected from the group consisting of hydrogen, C 1-10  alkyl, C 1-10  alkoxy, and C 3-12 cycloalkyl;  
         R 1  is selected from the group consisting of hydrogen, C 1-10 alkyl, C 3-12 cycloalkyl, C 2-10 alkenyl, amino, C 1-10 alkylamino, C 3-12 cycloalkylamino, benzyl, C 3-12  cycloalkenyl, a monocyclic, bicyclic or tricyclic aryl or heteroaryl ring, a heteromonocyclic ring, a heterobicyclic ring system, and a spiro ring system of the formula (II):  
         
           
             
             
                 
                 
             
           
         
         wherein X 1  and X 2  are independently selected from the group consisting of NH, O, S and CH 2 ;  
         wherein said alkyl, cycloalkyl, alkenyl, C 1-10 alkylamino, C 3-12 cycloalkylamino, or benzyl is optionally substituted with 1-3 substituents selected from the group consisting of halogen, C 1-10  alkyl, C 1-10  alkoxy, nitro, trifluoromethyl, cyano, phenyl, benzyl, benzyloxy, said phenyl, benzyl, and benzyloxy optionally being substituted with 1-3 substituents selected from the group consisting of halogen, C 1-10  alkyl, C 1-10  alkoxy, and cyano;  
         wherein said C 3-12  cycloalkyl, C 3-12  cycloalkenyl, monocyclic, bicyclic or tricyclic aryl, heteroaryl ring, heteromonocyclic ring, heterobicyclic ring system, and spiro ring system of the formula (II) are optionally substituted with 1-3 substituents selected from the group consisting of halogen, C 1-10  alkyl, C 1-10  alkoxy, nitro, trifluoromethyl, phenyl, benzyl, phenyloxy and benzyloxy, wherein said phenyl, benzyl, phenyloxy and benzyloxy are optionally substituted with 1-3 substituents selected from the group consisting of halogen, C 1-10  alkyl, C 1-10  alkoxy, and cyano;  
         R 2  is selected from the group consisting of hydrogen, C 1-10  alkyl, C 3-12  cycloalkyl and halogen, said alkyl optionally substituted with an oxo group;  
         or a pharmaceutically acceptable salt thereof.  
       
     
     
         7 . A compound of  claim 6 , wherein R 1  is alkyl selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, and hexyl.  
     
     
         8 . A compound of  claim 6 , wherein R 1  is cycloalkyl selected from the group consisting of cyclohexyl, cycloheptyl, cyclodctyl, cyclononyl, cyclodecyl, and norbornyl.  
     
     
         9 . A compound of  claim 6 , wherein R 1  is tetrahydronaphthyl, decahydronaphthyl or dibenzocycloheptyl.  
     
     
         10 . A compound of  claim 6 , wherein R 1  is phenyl or benzyl.  
     
     
         11 . A compound of  claim 6 , wherein R 1  is a bicyclic aromatic ring.  
     
     
         12 . A compound of  claim 11 , wherein R 1  is indenyl, quinoline or naphthyl.  
     
     
         13 . A compound of  claim 6 , wherein Z is a bond, methyl, or ethyl.  
     
     
         14 . A compound of  claim 6 , wherein n is 0.  
     
     
         15 . A compound of  claim 6 , wherein A is a saturated ring.  
     
     
         16 . A compound of  claim 6 , wherein X 1  and X 2  are both O.  
     
     
         17 . A compound selected from the group consisting of: 
 1-[1-benzyl-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(naphth-2-yl-methyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(3,3-Bis(phenyl)propyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(4-propylcyclohexyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(5-methylhex-2-yl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(decahydro-2-naphthyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(cyclooctyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-[4-(1-methylethyl)-cyclohexyl]-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(cyclooctylmethyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(benzyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(naphth-2-yl-methyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(3,3-Bis(phenyl)propyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(4-propylcyclohexyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(5-methylhex-2-yl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(decahydro-2-naphthyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(cyclooctyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(4-propylcyclohexyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(cyclooctylmethyl)-4-piperidinyl]-trans-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-benzyl-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(naphth-2-yl-methyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(3,3-Bis(phenyl)propyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(4-propylcyclohexyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(5-methylhex-2-yl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(decahydro-2-naphthyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(cyclooctyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-[4-(1-methylethyl)-cyclohexyl]-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    1-[1-(cyclooctylmethyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(benzyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(naphth-2-yl-methyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(3,3-Bis(phenyl)propyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(4-propylcyclohexyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(5-methylhex-2-yl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(decahydro-2-naphthyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(cyclooctyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(4-propylcyclohexyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one;    3-ethyl-1-[1-(cyclooctylmethyl)-4-piperidinyl]-cis-1,3,4,5,6,7,8,9-octahydro-2H-benzimidazol-2-one; and    pharmaceutically acceptable salts thereof.    
     
     
         18 . A pharmaceutical composition comprising a compound of  claim 1  and at least one pharmaceutically acceptable excipient.  
     
     
         19 . A method of treating pain comprising administering to a patient in need thereof, an effective amount of an analgesic compound according to  claim 1 .  
     
     
         20 . A method of modulating a pharmacological response from the ORL1 receptor comprising administering to a patient in need thereof, an effective amount of a compound according to  claim 1 .  
     
     
         21 . A pharmaceutical composition comprising a compound of  claim 6  and at least one pharmaceutically acceptable excipient.  
     
     
         22 . A method of treating pain comprising administering to a patient in need thereof, an effective amount of an analgesic compound according to  claim 6 .  
     
     
         23 . A method of modulating a pharmacological response from the ORL1 receptor comprising administering to a patient in need thereof, an effective amount of a compound according to  claim 6 .  
     
     
         24 . A compound of the formula (IA):  
       
         
           
           
               
               
           
         
         wherein  
         R is selected from the group consisting of hydrogen, C 1-10  alkyl C 1-10  alkoxy, and C 3-12 cycloalkyl;  
         R 2  is selected from the group consisting of hydrogen, C 1-10  alkyl, C 3-12  cycloalkyl and halogen, said alkyl optionally substituted with an oxo group;  
         A is a saturated or partially saturated ring;  
         n is an integer from 0 to 3;  
         and ZR 1  is  
         
           
             
             
                 
                 
             
           
         
         wherein  
         Y 1  is R 3 —(C 1 -C 12 )alkyl, R 4 -aryl, R 5 -heteroaryl, R 6 —(C 3 -C 12 )cyclo-alkyl, R 7 —(C 3 -C 7 )heterocycloalkyl, —CO 2 (C 1 -C 6 )alkyl, CN or —C(O)NR 8 R 9 ; Y 2  is hydrogen or Y 1 ; Y 3  is hydrogen or (C 1 -C 6 )alkyl; or Y 1 , Y 2  and Y 3 , together with the carbon to which they are attached, form one of the following structures:  
         
           
             
             
                 
                 
             
           
         
         wherein r is 0 to 3; w and u are each 0-3, provided that the sum of w and u is 1-3; c and d are independently 1 or 2; s is 1 to 5; and ring E is a fused R 4 -phenyl or R 5 -heteroaryl ring;  
         R 10  is 1 to 3 substituents independently selected from the group consisting of H, (C 1 -C 6 )alkyl, —OR 8 , —(C 1 -C 6 )alkyl-OR 8 , —NR 8 R 9  and —(C 1 -C 6 )alkyl-NR 8 R 9 ;  
         R 11  is 1 to 3 substituents independently selected from the group consisting of R 10 , —CF 3 , —OCF 3 , NO 2  and halo, or R 11  substituents on adjacent ring carbon atoms may together form a methylenedioxy or ethylenedioxy ring;  
         R 8  and R 9  are independently selected from the group consisting of hydrogen, (C 1 -C 6 ) alkyl, (C 3 -C 1-2 )cycloalkyl, aryl and aryl(C 1 -C 6 )alkyl;  
         R 3  is 1 to 3 substituents independently selected from the group consisting of H, R 4 -aryl, R 6 —(C 3 -C 12 )cycloalkyl, R 5 -heteroaryl, R 7 —(C 3 -C 7 )heterocycloalkyl, —NR 8 R 9 , —OR 12  and —S(O) 0-2 R 12 ;  
         R 6  is 1 to 3 substituents independently selected from the group consisting of H, (C 1 -C 6 )alkyl, R 4 -aryl, —NR 8 R 9 , —OR 12  and —SR 12 ;  
         R 4  is 1 to 3 substituents independently selected from the group consisting of hydrogen, halo, (C 1 -C 6 )alkyl, R 13 -aryl, (C 3 -C 12 )cycloalkyl, —CN, —CF 3 , —OR 8 , —(C 1 -C 6 )alkyl-OR 8 , —OCF 3 , —NR 8 R 9 , —(C 1 -C 6 )alkyl-NR 8 R 9 , —NHSO 2 R 8 , —SO 2 N(R 14 ) 2 , —SO 2 R 8 , —SOR 8 , —NO 2 , —CONR 8 R 9 , —NR 9 COR 8 , —COR 8 , —COCF 3 , —OCOR 8 , —OCO 2 R 8 , —COOR 8 , —(C 1 -C 6 )alkyl-NHCOOC(CH 3 ) 3 , —(C 1 -C 6 )alkyl-NHCOCF 3 , —(C 1 -C 6 )atkyl-NHSO 2 —(C 1 -C 6 )alkyl, —(C 1 -C 6 )alkyl-NHCONH-(C 1 -C 6 )-alkyl and  
         
           
             
             
                 
                 
             
           
         
         wherein f is 0 to 6; or R 4  substituents on adjacent ring carbon atoms may together form a methylenedioxy or ethylenedioxy ring;  
         R 5  is 1 to 3 substituents independently selected from the group consisting of hydrogen, halo, (C 1 -C 6 )alkyl, R 13 -aryl, (C 3 -C 12 )cycloalkyl, —CN, —CF 3 , —OR 8 , —(C 1 -C 6 )alkyl-OR 8 , —OCF 3 , —NR 8 R 9 , —(C 1 -C 6 )alkyl-NR 8 R 9 , —NHSO 2 R 8 , —SO 2 N(R 14 ) 2 , —NO 2 , —CONR 8 R 9 , —NR 9 COR 8 , —COR 8 , —OCOR 8 , —OCO 2 R 8  and —COOR 8 ;  
         R 7  is H, (C 1 -C 6 )alkyl, —OR 8 , —(C 1 -C 6 )alkyl-OR 8 , —NR 8 R 9  or —(C 1 -C 6 )alkyl-NR 8 R 9 ;  
         R 12  is H, (C 1 -C 6 )alkyl, R 4 -aryl, —(C 1 -C 6 )alkyl-OR 8 , —(C 1 -C 6 )alkyl-NR 8 R 9 , —(C 1 -C 6 )alkyl-SR 8 , or aryl (C 1 -C 6 )alkyl;  
         R 13  is 1-3 substituents independently selected from the group consisting of H, (C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy and halo;  
         R 14  is independently selected from the group consisting of H, (C 1 -C 6 )alkyl and R 13 —C 6 H 4 —CH 2 —;  
         or a pharmaceutically acceptable salt thereof.  
       
     
     
         25 . A pharmaceutical composition comprising a compound of  claim 24  and at least one pharmaceutically acceptable excipient.  
     
     
         26 . A method of treating pain comprising administering to a patient in need thereof, an effective amount of an analgesic compound according to  claim 24 .  
     
     
         27 . A method of modulating a pharmacological response from the ORL1 receptor comprising administering to a patient in need thereof, an effective amount of a compound according to  claim 24 .  
     
     
         28 . A method of modulating a pharmacological response from an opioid receptor comprising administering to a patient in need thereof, an effective amount of a compound according to  claim 1 .  
     
     
         29 . A method of modulating a pharmacological response from an opioid receptor comprising administering to a patient in need thereof, an effective amount of a compound according to  claim 6 .  
     
     
         30 . A method of modulating a pharmacological response from an opioid receptor comprising administering to a patient in need thereof, an effective amount of a compound according to  claim 24.