3(2H)Pyridazinone, process for its preparation and anti-allergic agent containing it
申请人:NISSAN CHEMICAL INDUSTRIES LTD.
公开号:EP0201765A2
公开(公告)日:1986-11-20
A 3(2H)pyridazinone of the formula:
wherein R1 is hydrogen, methyl, C3-C6 alkenyl, C5 or C6 cycloalkyl, benzyl, phenyl, -(CH2)mCO2R3 (wherein R3 is hydrogen or C1-C5 alkyl, and m is an integer of from 1 to 4), -(CH2)nA (wherein A is -OH or-N(R4)2 wherein R4 is C1-C3 alkyl, and n is an integer of from 2 to 6) or -CH2CF3; R2 is chlorine or bromine; each of Y1 and Y2 which may be the same or different, is hydrogen, C1-C5 alkyl, C2-C8 alkenyl, halogen, -OR5 (wherein R5 is hydrogen, C1-C8 alkyl or
wherein q is an integer of from 1 to 4),-CO2R6 (wherein R6 is hydrogen or C1-C5 alkyl),-N(R7)2 (wherein R7 is C1-C4 alkyl) or-SR8 (wherein R8 is C1-C4 alkyl); and Y3 is C1-C5 alkyl, C2-C8 alkenyl, halogen, -OR5 (wherein R5 is as defined above), -CO2R6 (wherein R6 is as defined above), -N(R7)2 (wherein R7 is as defined above) or-SR8 (wherein R8 is as defined above), or a pharmaceutically acceptable salt thereof.
一种 3(2H)哒嗪酮,其式如下
其中 R1 是氢、甲基、C3-C6 烯基、C5 或 C6 环烷基、苄基、苯基、-(CH2)mCO2R3(其中 R3 是氢或 C1-C5 烷基,m 是 1 至 4 的整数)、-(CH2)nA(其中 A 是-OH 或-N(R4)2,其中 R4 是 C1-C3 烷基,n 是 2 至 6 的整数)或-CH2CF3;R2是氯或溴,Y1和Y2可以相同或不同,各自是氢、C1-C5烷基、C2-C8烯基、卤素、-OR5(其中R5是氢、C1-C8烷基或C2-C8烯基)或-CH2CF3。
其中 q 为 1 至 4 的整数)、-CO2R6(其中 R6 为氢或 C1-C5 烷基)、-N(R7)2(其中 R7 为 C1-C4 烷基)或-SR8(其中 R8 为 C1-C4 烷基);和 Y3 是 C1-C5 烷基、C2-C8 烯基、卤素、-OR5(其中 R5 如上定义)、-CO2R6(其中 R6 如上定义)、-N(R7)2(其中 R7 如上定义)或-SR8(其中 R8 如上定义)或其药学上可接受的盐。