Amidines, their preparation and pharmaceutical compositions containing them.
申请人:SMITH KLINE & FRENCH LABORATORIES
LIMITED
公开号:EP0007326A1
公开(公告)日:1980-02-06
Amidine phosphonate compounds have the structure
in which Het is a 5- or 6- membered unsaturated nitrogen heterocycle, Z is sulphur or methylene, n is 2 or 3, R' is hydrogen, lower alkyl or Het-CH2Z(CH2)n2-, p is 0 or 1, R2 is hydrogen or lower alkyl, or R' and R2 together form a (CH2)2 or(CH2)3 group, R'is lower alkyl, aryl or aryl-(lower alkyl), and R4 is hydrogen when p is 0 and hydrogen, lower alkyl, aryl or aryl (lower alkyl) when p is 1. Those compounds where R4 is other than hydrogen are intermediates for the preparation of the compounds where R4 is hydrogen, which have histamine H2-antagonist activity and are the active ingredients of pharmaceutical compositions. The compounds are prepared by primary amine coupling reactions, phosphonylation and hydrolysis.
膦酸脒化合物的结构如下
其中 Het 是 5 或 6 位不饱和氮杂环,Z 是硫或亚甲基,n 是 2 或 3,R'是氢、低级烷基或 Het-CH2Z(CH2)n2-,p 是 0 或 1,R2 是氢或低级烷基、或 R' 和 R2 共同形成 (CH2)2 或 (CH2)3 基团,R'为低级烷基、芳基或芳基(低级烷基),当 p 为 0 时,R4 为氢,当 p 为 1 时,R4 为氢、低级烷基、芳基或芳基(低级烷基)。R4不是氢的化合物是制备R4是氢的化合物的中间体,这些化合物具有组胺H2-拮抗剂活性,是药物组合物的活性成分。这些化合物是通过伯胺偶联反应、膦酰化反应和水解反应制备的。