Claims for Patent: 4,167,574

Summary for Patent: 4,167,574

Title:	N-phenyl-N-(4-piperidinyl)amides
Abstract:	Novel compounds of the series of N-phenyl-N-(4-piperidinyl)amides having a (4,5-dihydro-4-R-5-oxo-1H-tetrazol-1-yl)alkyl or (4,5-dihydro-4-R-5-thioxo-1H-tetrazol-1-yl)alkyl substituent group in the 1-position of the piperidine nucleus, said compounds being useful as analgesic agents.
Inventor(s):	Frans Janssens
Assignee:	Janssen Pharmaceutica NV
Application Number:	US05/954,709
Patent Claims:	1. A chemical compound selected from the group consisting of a N-phenyl-N-(4-piperidinyl)amide derivative having the formula: ##STR23## and the pharmaceutically acceptable acid addition salts thereof, wherein:R is a member selected from the group consisting of hydrogen, lower alkyl, cycloalkyl, having 3 to 6 ring carbon atoms lower alkenyl, lower alkynyl, (lower alkyl)oxy(lower alkyl), aryl and aryl(lower alkyl); R1 is a member selected from the group consisting of hydrogen, lower alkyl and aryl; R2 is a member selected from the group consisting of hydrogen and lower alkyl; R3 is a member selected from the group consisting of lower alkyloxycarbonyl, lower alkyloxymethyl and lower alkylcarbonyl; R4 is a member selected from the group consisting of lower alkyl, cycloalkyl, having 3 to 6 ring carbon atoms lower alkenyl, lower alkyloxy and arylmethyl; R5 is a member selected from the group consisting of hydrogen and lower alkyl; R6 is a member selected from the group consisting of hydrogen, halo, lower alkyl, lower alkyloxy and trifluoromethyl; Z is a member selected from the group consisting of O and S; and n is the integer 0 or 1; wherein said aryl as used in the foregoing definitions is selected from the group consisting of phenyl, substituted phenyl, thienyl and pyridinyl, said substituted phenyl having from 1 to 2 substituents independently selected from the group consisting of halo, lower alkyl, lower alkyloxy, and trifluoromthyl. 2. A chemical compound selected from the group consisting of N-{1-[2-(4-ethyl-4,5-dihydro-5-oxo-1H-tetrazol-1-yl)ethyl]-4-(methoxymethyl)-4-piperidinyl}-N-phenylpropanamide and the pharmaceutically acceptable acid addition salts thereof. 3. A chemical compound selected from the group consisting of methyl 1-[2-(4,5-dihydro-4-methyl-5-oxo-1H-tetrazol-1-yl)ethyl]-4-[(1-oxopropyl)phenylamino]-4-piperidinecarboxylate and the pharmaceutically acceptable acid addition salts thereof. 4. A chemical compound selected from the group consisting of methyl 1-[2-(4-ethyl-4,5-dihydro-5-oxo-1H-tetrazol-1-yl)ethyl]-4-[(1-oxopropyl)methylamino]-4-piperidinecarboxylate and the pharmaceutically acceptable acid addition salts thereof. 5. A chemical compound selected from the group consisting of methyl 1-[2-(4,5-dihydro-5-oxo-4-propyl-1H-tetrazol-1-yl)ethyl]-4-[(1-oxopropyl)phenylamino]-4-piperidinecarboxylate and the pharmaceutically acceptable acid addition salts thereof. 6. A chemical compound selected from the group consisting of N-{1-[2-(4,5-dihydro-4-methyl-5-oxo-1H-tetrazol-1-yl)ethyl]-4-(methoxymethyl)-4-piperidinyl}-N-phenylpropanamide and the pharmaceutically acceptable acid addition salts thereof. 7. A chemical compound selected from the group consisting of N-{1-[2-(4-ethyl-4,5-dihydro-5-oxo-1H-tetrazol-1-yl)-1-methylethyl]-4-(methoxymethyl)-4-piperidinyl}-N-phenylpropanamide and the pharmaceutically acceptable acid addition salts thereof. 8. A pharmaceutical composition comprising an inert carrier material and as an active ingredient an effective analgesic amount of a compound selected from the group consisting of a N-phenyl-N-(4-piperidinyl)amide derivative having the formula: ##STR24## and the pharmaceutically acceptable acid addition salts thereof, wherein: R is a member selected from the group consisting of hydrogen, lower alkyl, cycloalkyl, having 3 to 6 ring carbon atoms lower alkenyl, lower alkynyl, (lower alkyl)oxy(lower alkyl), aryl and aryl(lower alkyl);R1 is a member selected from the group consisting of hydrogen, lower alkyl and aryl; R2 is a member selected from the group consisting of hydrogen and lower alkyl; R3 is a member selected from the group consisting of lower alkyloxycarbonyl, lower alkyloxymethyl and lower alkylcarbonyl; R4 is a member selected from the group consisting of lower alkyl, cycloalkyl, having 3 to 6 ring carbon atoms lower alkenyl, lower alkyloxy and arylmethyl; R5 is a member selected from the group consisting of hydrogen and lower alkyl; R6 is a member selected from the group consisting of hydrogen, halo, lower alkyl, lower alkyloxy and trifluoromethyl; Z is a member selected from the group consisting of O and S; and n is the integer 0 or 1; wherein said aryl as used in the foregoing definitions is selected from the group consisting of phenyl, substituted phenyl, thienyl and pyridinyl, said substituted phenyl having from 1 to 2 substituents independently selected from the group consisting of halo, lower alkyl, lower alkyloxy, and trifluoromethyl. 9. A pharmaceutical composition comprising an inert carrier material and as an active ingredient an effective analgesic amount of a compound selected from the group consisting of N-{1-[2-(4-ethyl-4,5-dihydro-5-oxo-1H-tetrazol-1-yl)ethyl]-4-(methoxymethyl)-4-piperidinyl}-N-phenylpropanamide and the pharmaceutically acceptable acid addition salts thereof. 10. A pharmaceutical composition comprising an inert carrier material and as an active ingredient an effective analgesic amount of a compound selected from the group consisting of methyl 1-[2-(4,5-dihydro-4-methyl-5-oxo-1H-tetrazol-1-yl)ethyl]-4-[(1-oxopropyl)phenylamino]-4-piperidinecarboxylate and the pharmaceutically acceptable acid addition salts thereof. 11. A pharmaceutical composition comprising an inert carrier material and as an active ingredient an effective analgesic amount of a compound selected from the group consisting of methyl 1-[2-(4-ethyl-4,5-dihydro-5-oxo-1H-tetrazol-1-yl)ethyl]-4-[(1-oxopropyl)phenylamino]-4-piperidinecarboxylate and the pharmaceutically acceptable acid addition salts thereof. 12. A pharmaceutical composition comprising an inert carrier material and as an active ingredient an effective analgesic amount of a compound selected from the group consisting of methyl 1-[2-(4,5-dihydro-5-oxo-4-propyl-1H-tetrazol-1-yl)ethyl]-4-[(1-oxopropyl)phenylamino]-4-piperidinecarboxylate and the pharmaceutically acceptable acid addition salts thereof. 13. A pharmaceutical composition comprising an inert carrier material and as an active ingredient an effective analgesic amount of a compound selected from the group consisting of N-{1-[2-(4,5-dihydro-4-methyl-5-oxo-1H-tetrazol-1-yl)ethyl]-4-(methoxymethyl)-4-piperidinyl}-N-phenylpropanamide and the pharmaceutically acceptable acid addition salts thereof. 14. A pharmaceutical composition comprising an inert carrier material and as an active ingredient an effective analgesic amount of a compound selected from the group consisting of N-{1-[2-(4-ethyl-4,5-dihydro-5-oxo-1H-tetrazol-1-yl)-methylethyl]-4-(methoxymethyl)-4-piperidinyl}-N-phenylpropanamide and the pharmaceutically acceptable acid addition salts thereof.