Fei WANG ^a,b, Xiang-Mei LI ^b, and Ji-Kai LIU ^*,a,b

^a State Key Laboratory of Phytochemistry and Plant Resource in West China, Kunming Institute of Botany, Chinese Academy of Sciences; Kunming 650204, P. R. China 

^b BioBioPha Co., Ltd.; Kunming 650204, P. R. China.

Abstract

Two new ent-kaurane diterpene derivatives, sculponeatins N (1) and O (2), and a new A-ring contracted oleanane triterpenoid, sculponeatic acid (5), were isolated from the plant Isodon sculponeata. Their structures were elucidated on the basis of extensive spectroscopic analysis. This is the first report of natural occurrence of an A-ring contracted oleanane triterpenoid.

文章链接：https://www.jstage.jst.go.jp/article/cpb/57/5/57_5_525/_article/-char/ja/