作者:Antonio G. González、Cosme G. Francisco、Raimundo Freire、Rosendo Hernández、José A. Salazar、Ernesto Suárez
DOI:10.1016/0031-9422(75)85188-0
日期:1975.4
Abstract β-Amyrin, sitosterol, celastrol, pristimerin, tingenone and a new hydroxymethylene quinonoid dinor-triterpene iguesterine were isolated from the root bark of Catha cassinoides. The structure of iguesterine was determined spectroscopically and by synthesis from tingenone. Tentative assignments are given for the chemical shifts of the methyl groups of iguesterin, tingenone and some of their derivatives
摘要 从苦参的根皮中分离得到β-香树脂醇、谷甾醇、celastrol、pristimerin、tingenone和一种新的羟基亚甲基醌二诺-三萜烯雌二醇。iguesterine 的结构是通过光谱法和由丁酮合成确定的。对伊格雌激素、丁酮及其一些衍生物的甲基的化学位移给出了初步的分配。