Pyrimido (4,5-c) pyridazines, their use in pharmaceutical preparations, and process for their preparation
申请人:THE WELLCOME FOUNDATION LIMITED
公开号:EP0000383A1
公开(公告)日:1979-01-24
Pyrimido (4,5-c) pyridazines of formula II and compounds of formulae III, IV, VI, VII, VIII.
wherein R1 is alkyl hydroxymethyl, phenyl, carboxy, optionally substituted benzyl, optionally substituted phenacyl, acyloxymethyl, indolyl, indolyl methyl, a group
optionally substituted in the phenyl ring, a group
or a group CH2CH2CO2Z in which Y is hydrogen, alkyl or alkoxy, and Z is hydrogen or alkyl, are inhibitors of dihydropteroic acid biosynthesis and have anti-microbial activity. They can be prepared as follows:
式 II 的嘧啶并(4,5-c)吡啶和式 III、IV、VI、VII、VIII 的化合物。
其中 R1 是羟甲基烷基、苯基、羧基、任选取代的苄基、任选取代的苯甲酰 基、酰氧基甲基、吲哚基、吲哚基甲基、一个在苯基环中任选取代的基团、 一个在吲哚基上任选取代的基团、一个在吲哚基上任选取代的基团。
在苯基环上被任选取代的基团、基团
或基团 CH2CH2CO2Z(其中 Y 为氢、烷基或烷氧基,Z 为氢或烷基)是二氢蝶酸生物合成的抑制剂,具有抗微生物活性。它们的制备方法如下: