申请人:Nissan Chemical Industries Ltd.
公开号:US04978665A1
公开(公告)日:1990-12-18
A 3(2H)pyridazinone of the formula: ##STR1## wherein R.sub.1 is hydrogen, 2-propenyl or straight chained or branched C.sub.1 -C.sub.4 alkyl; R.sub.2 is hydrogen or C.sub.1 -C.sub.3 alkyl; X is chlorine or bromine; Y is hydrogen, nitro, -NHR.sub.3 wherein R.sub.3 is hydrogen or straight chained or branched C.sub.1 -C.sub.4 alkyl, -AR.sub.4 wherein A is oxygen or sulfur and R.sub.4 is hydrogen, straight chained or branched C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 alkenyl having one double bond, C.sub.3 -C.sub.6 alkynyl having one triple bond, phenyl or ##STR2## wherein R.sub.5 is hydrogen or C.sub.1 -C.sub.4 alkyl, or halogen; Z.sub.1 is hydrogen, C.sub.1 -C.sub.4 alkyl, -OR.sub.6 wherein R.sub.6 is hydrogen, straight chained or branched C.sub.1 -C.sub.8 alkyl or ##STR3## wherein n is an integer of from 1 to 4, -N(R.sub.7).sub.2 wherein R.sub.7 is C.sub.1 -C.sub.4 alkyl, or halogen; Z.sub.2 is C.sub.1 -C.sub.4 alkyl, -OR.sub.6 wherein R.sub.6 is as defined above, -N(R.sub.7).sub.2 wherein R.sub.7 is as defined above, or halogen, provided that when R.sub.1 is straight chained or branched C.sub.2 -C.sub.4 alkyl, Y is not hydrogen and when R.sub.1 is hydrogen, methyl or 2-propenyl, Y and R.sub.2 are not simultaneously hydrogen, or a pharmaceutically acceptable salt thereof.
化合物的结构式为:##STR1## 其中R.sub.1是氢、2-丙烯基或直链或支链的C.sub.1-C.sub.4烷基;R.sub.2是氢或C.sub.1-C.sub.3烷基;X是氯或溴;Y是氢、硝基、-NHR.sub.3,其中R.sub.3是氢或直链或支链的C.sub.1-C.sub.4烷基,-AR.sub.4,其中A是氧或硫,R.sub.4是氢、直链或支链的C.sub.1-C.sub.6烷基、C.sub.3-C.sub.6烯基(含有一个双键)、C.sub.3-C.sub.6炔基(含有一个三键)、苯基或##STR2## 其中R.sub.5是氢或C.sub.1-C.sub.4烷基或卤素;Z.sub.1是氢、C.sub.1-C.sub.4烷基、-OR.sub.6,其中R.sub.6是氢、直链或支链的C.sub.1-C.sub.8烷基或##STR3## 其中n是1到4的整数,-N(R.sub.7).sub.2,其中R.sub.7是C.sub.1-C.sub.4烷基或卤素;Z.sub.2是C.sub.1-C.sub.4烷基、-OR.sub.6,其中R.sub.6如上所定义,-N(R.sub.7).sub.2,其中R.sub.7如上所定义或卤素,但当R.sub.1是直链或支链的C.sub.2-C.sub.4烷基时,Y不是氢,当R.sub.1是氢、甲基或2-丙烯基时,Y和R.sub.2不能同时是氢,或其药学上可接受的盐。