Patent number: 6673820
Abstract: The invention relates to novel compounds of the general formula:
in which R1 is hydrogen, halogen, C1-C6alkyl, C1-C6alkoxy, C1-C6haloalkyl or unsubstituted or mono- to pentasubstituted phenyl, where the substituents are selected from the group consisting of C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy, aryloxy, halogen, cyano and nitro, where, if the number of substituents exceeds 1, the substituents can be identical or different; R2 is hydrogen, C1-C6alkyl, (C1-C6alkylene)phenyl, pyridyl, COOR6, CONR7R8, COR6, allyl or CH2—O—R6; R3 is unsubstituted or substituted heterocyclyl, where the substituents are in each case selected from the group consisting of unsubstituted or substituted phenyl, where the substituents are selected from the group consisting of C1-C6alkyl, C1-C6alkoxy, halogen, cyano and nitro, where, if the number of substituents exceeds 1, the substituents can be identical or different, benzyl, C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy, aryloxy, halogen, cyano, hydroxyl, ami
Type:
Grant
Filed:
May 31, 2002
Date of Patent:
January 6, 2004
Assignee:
Novartis Animal Health US, Inc.
Inventors:
Pierre Ducray, Jacques Bouvier, Maurizio Schwarzenbach
Patent number: 6620767
Abstract: The invention relates to compounds of the general formula
wherein R1 is hydrogen, halogen, C1-C6-alkyl, C1-C6-alkoxy, C1-C6-haloalkyl or unsubstituted or mono- to penta-substituted phenyl, whereby the substituents are selected from the group comprising C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, aryloxy, halogen, cyano and nitro, whereby if the number of substituents is greater than 1, the substituents may be identical or different; R2 is hydrogen, C1-C6-alkyl, (C1-C6-alkylene)phenyl, pyridyl, COOR6, CONR7R8COR6, allyl or CH2—O—R6; R3 is C1-C6-alkyl; R4 is unsubstituted or substituted phenyl, unsubstituted or substituted benzyl or unsubstituted or substituted heterocyclyl, whereby each of the substituents, independently of each other, is selected from the group comprising C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, aryloxy, halogen, cyano, hydroxy, amino and nitro, whereby if the number of substituents is greater than 1, the substituents may be identical or different; R6 is C1-C6
Type:
Grant
Filed:
May 28, 2002
Date of Patent:
September 16, 2003
Assignee:
Novartis Animal Health US, Inc.
Inventors:
Pierre Ducray, Jacques Bouvier