作者:Lester A. Mitscher、Sitaraghav R. Gollapudi、David C. Gerlach、Steven D. Drake、Eduardo A. Ve´liz、Jeffrey A. Ward
DOI:10.1016/0031-9422(88)83103-0
日期:1988.1
ethanolic extracts of the stern bark of Erythrina crista-galli resulted in the isolation of a new pterocarpan, erycristin, and two previously known pterocarpans, sandwicensin and erythrabyssin-II. The structure of erycristin was determined by spectroscopic examination and by chemical transformation of sandwicensin. The absolute stereochemistry of erycristin was established by circular dichroism measurements
摘要 Erythrina crista-galli 的树皮乙醇提取物的生物测定定向分馏导致分离出一种新的翼果、erycristin 和两种先前已知的翼果、sandwicensin 和erythrabyssin-II。erycristin 的结构是通过光谱检查和夹心素的化学转化确定的。erycristin 的绝对立体化学是通过圆二色性测量建立的。Erythrabyssin-II diacetate 被转化为 erycristagallin diacetate,支持先前提出的 erycristagallin 结构。