Some new analogues of verapamil (Ia) and mepamil (Ib), calcium antagonists of arylalkylamine type, were synthesized and screened for cardiovascular activities. The basic structure was modified a) on the phenyl ring, attached to the quaternary carbon, b) on the alkyl group, attached to the quaternary carbon and c) on the alkylamino group, attached in position 3 to the n-propyl fragment. Except of 2-(2-chlorophenyl)-2-isopropyl-5-(N-methylhomoveratrylamino)valeronitrile (VIa), all the synthesized compounds exhibited lower hypotensive activity, than the mother compound, verapamil.
一些新的维拉帕米(Ia)和美帕米(Ib)的类似物,属于芳基烷胺型钙拮抗剂,已经合成并进行心血管活性筛选。基本结构进行了修改:a)在苯环上,连接到季铵碳上,b)在烷基团上,连接到季铵碳上,c)在烷基氨基团上,连接到n-丙基片段的位置3。除了2-(2-氯苯基)-2-异丙基-5-(N-甲基同位素香豆酰胺)戊腈(VIa)外,所有合成的化合物表现出较低的降压活性,低于母化合物维拉帕米。