申请人:SHIONOGI & CO., LTD.
公开号:EP0107619A1
公开(公告)日:1984-05-02
Dihydropyrazolo[3,4-bipyridine derivatives represented by the general formula:
wherein X and X each is hydrogen, nitro, or halogen which may be located at the position or positions 2, 3, and/or 6;
R1 is alkyl;
R2 is hydrogen, alkyl, cycloalkyl, or phenyl;
R3 is hydrogen, straight or branched chain alkyl, or cycloalkyl which may be substituted by alkyl, substituted or unsubstituted phenyl, aralkyl, alkoxycarbonyl, or 5- or 6- membered heterocyclic group containing an oxygen or nitrogen, having calcium-antagonistic action are useful in treatment of diseases
in the circulatory system such as angina pectoris, hypertension, cerebrovascular dysfunction, arrhythmia, and so on with no adverse reaction like negative inotropic action; prepared by the Michael addition and concurrent cyclization reaction of 2-acetyl cinnamic acid derivatives with 5-aminopyrazole derivatives.
由通式代表的二氢吡唑并[3,4-联吡啶]衍生物:
其中 X 和 X 各为氢、硝基或卤素,可位于位置 2、3 和/或 6;
R1 是烷基
R2 是氢、烷基、环烷基或苯基;
R3 是氢、直链或支链烷基,或可被烷基、取代或未取代的苯基、芳基、烷氧羰基或含氧或氮的 5 或 6 位杂环基取代的环烷基。
通过 2-乙酰肉桂酸衍生物与 5-氨基吡唑衍生物的迈克尔加成和同时环化反应制备。