Studies on New β-Adrenergic Blocking Agents. I. Syntheses and Pharmacology of Coumarin Derivatives
作者:YASUNOBU SATO、YUTAKA KOBAYASHI、TAKASHI NAGASAKI、TAKESHI OSHIMA、SEIJI KUMAKURA、KOICHI NAKAYAMA、HIROYUKI KOIKE、HIROMU TAKAGI
DOI:10.1248/cpb.20.905
日期:——
Several (2-hydroxy-3-aminopropoxy) coumarin derivatives were synthesized from 5-, 7- and 8-hydroxycoumarin derivatives by established methods and β-adrenergic blocking activity was examined. A systematic study of the positional isomers in the coumarin derivatives showed that 5-methyl-8-(2-hydroxy-3-t-butylaminopropoxy) coumarin (XXIIa2) was most favorable as a β-adrenergic blocking agent. It was shown that the classical structure requirement prevailed, but 7-positional isomer was much less active. Resolution of XXIIa2 revealed that the 1-isomer possessed the major activity.
通过既定方法,从5-羟基、7-羟基和8-羟基香豆素衍生物中合成了几种(2-羟基-3-氨基丙氧基)香豆素衍生物,并检测了β-肾上腺素阻断活性。对香豆素衍生物中的位置异构体进行系统研究后发现,5-甲基-8-(2-羟基-3-叔丁基氨基丙氧基)香豆素(XXIIa2)是最理想的β-肾上腺素阻断剂。结果表明,经典结构要求是普遍适用的,但7位异构体的活性要低得多。对XXIIa2的解析表明,1-异构体具有主要活性。