Pachysandra Alkaloids. VIII. Structures of Pachystermine-A and -B, Novel Type Alkaloids Having a β-Lactam Ring
作者:Tohru Kikuchi、Shoichiro Uyeo
DOI:10.1248/cpb.15.549
日期:——
Pachystermine-A (I) and -B (II), weakly basic alkaloids isolated from Pachysandra terminalis SIEB. et ZUCC.(Buxaceae), were investigated. The structures and stereochemistry of these alkaloids are now assigned to the formula I and II, respectively. They represent a novel type of 3, 20-diamino-5α-pregnane alkaloid carrying a four-membered β-lactam ring system.
从光滑白木通(Pachysandra terminalis SIEB. et ZUCC.,锦葵科)中分离出的弱碱性生物碱Pachystermine-A (I) 和Pachystermine-B (II)进行了研究。这些生物碱的结构和立体化学现在分别被归属于公式I和II。它们代表了一种新型的3, 20-二氨基-5α-孕烷生物碱,具有一个四元β-内酰胺环系统。