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南美超级胎牛血清999尝鲜特惠
转染试剂低至5折
基质胶阶梯特惠
积分商城,好礼送不停

三种9,11-断裂四环三萜类化合物的结构解析及Euphorol J的结构修订

Structural Elucidation of Three 9,11-Seco Tetracyclic Triterpenoids Enables the Structural Revision of Euphorol J

Fang-Yu Yuan, Fan Xu, Run-Zhu Fan, Wei Li, Dong Huang, Gui-Hua Tang, Tao Yuan, Li-She Gan, Sheng Yin

Journal:JOURNAL OF ORGANIC CHEMISTRY

IF:4.35

DOI:10.1021/acs.joc.1c00631

PMID:34014670

Published:2021-05-20

research field:

Abstract

Compounds 1–3, the rare examples of 9,11-seco euphane or lanostane triterpenoids featuring an enol-hemiacetal functionality, were isolated from Euphorbia stracheyi. Their structures were elucidated by a combination of spectroscopic, computational, chemical, and single-crystal X-ray diffraction means, which enables the structure of previously published euphorol J to be revised as 1. 1–3 showed significant cytotoxicities on the breast cancer cell line MDA-MB-468 with IC50 values in the range of 2.9–3.9 μM.

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