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