Total Syntheses, Absolute Configurations, and Cytotoxicity Evaluation of Ugonstilbenes A, B, and C from the Rhizomes of <i>Helminthostachys zeylanica</i>
作者:Cheng-Tin Lin、Yao-Hung Yang、Jing-Jy Cheng、Ming-Jaw Don
DOI:10.1021/acs.jnatprod.2c00919
日期:2023.2.24
and efficient syntheses of the naturally occurring ugonstilbenes A, B, and C. The stilbene skeleton was prepared using the Horner–Wadsworth–Emmons reaction. On the basis of their specific rotations, the absolute configurations of ugonstilbenes A and C were both determined to be R, while the absolute configuration of ugonstilbene B was determined as 4aS,9aR. The synthesized compounds showed cytotoxic
这项研究描述了天然存在的二苯乙烯 A、B 和 C 的首次有效合成。二苯乙烯骨架是使用 Horner-Wadsworth-Emmons 反应制备的。根据比旋光度,确定乌二苯乙烯 A 和 C 的绝对构型均为R,而乌二苯乙烯 B 的绝对构型确定为 4a S,9a R。合成的化合物对选定的人类癌细胞系表现出细胞毒活性。