3(2H)pyridazinones, processes for their preparation and antagonistic agent against SRS-A
申请人:NISSAN CHEMICAL INDUSTRIES LTD.
公开号:EP0376079A1
公开(公告)日:1990-07-04
A 3(2H)pyridazinone of the formula:
wherein R1 is hydrogen, 2-propenyl, or straight chained or branched C1-C4. alkyl; each of R2 and R3 which may be the same or different, is hydrogen, or straight chained or branched C1-C3 alkyl; X is chlorine, or bromine; Y is hydrogen, halogen, nitro, amino, or -AR4 wherein A is oxygen, or sulfur, and R4 is hydrogen, straight chained, branched or cyclic C, -Cs alkyl, or
wherein R5 is hydrogen, or straight chained or branched C1-C4 alkyl; and Ar is
wherein each of Z1 and Z2 which may be the same or different, is hydrogen, halogen, straight or branched C1-C4 alkyl, or -OR6 wherein R6 is straight or branched C1-C4 alkyl, and B is oxygen, sulfur, or -N=C- (to form a quinoline or pyridine ring); or a pharmaceutically acceptable salt thereof.
一种 3(2H)哒嗪酮,其式如下
其中 R1 是氢、2-丙烯基、或直链或支链 C1-C4 烷基;R2 和 R3 可以相同或不同,各自是氢、或直链或支链 C1-C3 烷基;X 是氯、或溴;Y 是氢、卤素、硝基、氨基或 -AR4 其中 A 是氧或硫,R4 是氢、直链、支链或环状 C、-Cs 烷基,或
其中 R5 是氢、直链或支链 C1-C4 烷基;Ar 是
其中 Z1 和 Z2 可以相同或不同,各自为氢、卤素、直链或支链 C1-C4 烷基,或 -OR6 其中 R6 为直链或支链 C1-C4 烷基,而 B 为氧、硫或 -N=C- (形成喹啉环或吡啶环);或其药学上可接受的盐。