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.
一种化学式为##STR1##的3(2H)吡啶酮,其中R.sub.1为氢,2-丙烯基或直链或支链C.sub.1-C.sub.4烷基; R.sub.2为氢或C.sub.1-C.sub.3烷基; X为氯或溴; Y为氢,硝基,-NHR.sub.3,其中R.sub.3为氢或直链或支链C.sub.1-C.sub.4烷基,-AR.sub.4,其中A为氧或硫,R.sub.4为氢,直链或支链C.sub.1-C.sub.6烷基,C.sub.3-C.sub.6烯基,具有一个双键,C.sub.3-C.sub.6炔基,具有一个三键,苯基或##STR2##,其中R.sub.5为氢或C.sub.1-C.sub.4烷基或卤素; Z.sub.1为氢,C.sub.1-C.sub.4烷基,-OR.sub.6,其中R.sub.6为氢,直链或支链C.sub.1-C.sub.8烷基或##STR3##,其中n为1到4的整数,-N(R.sub.7).sub.2,其中R.sub.7为C.sub.1-C.sub.4烷基或卤素; Z.sub.2为C.sub.1-C.sub.4烷基,-OR.sub.6,其中R.sub.6如上所述,-N(R.sub.7).sub.2,其中R.sub.7如上所述或卤素,但当R.sub.1为直链或支链C.sub.2-C.sub.4烷基时,Y不为氢,当R.sub.1为氢,甲基或2-丙烯基时,Y和R.sub.2不同时为氢,或其药学上可接受的盐。