Cephalotane-Type Norditerpenoids from Cephalotaxus fortunei var. alpina

Cephalotane-Type Norditerpenoids from Cephalotaxus fortunei var. alpina
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来自 Cephalotaxus Fortunei var. 的三尖杉烷型降萜类化合物。

DOI:
10.1002/cjoc.202100913
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发表时间:
2022
影响因子:
5.4
通讯作者:
Yue Jianmin
Yue Jianmin
中科院分区:
化学2区
文献类型:
--
作者:
Ge Zhanpeng;Zhou Bin;Zimbres Flavia M;Cassera Maria B;Zhao Jinxin;Yue Jianmin

文献摘要

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本文对南方红豆杉种子95%乙醇提取物的化学成分进行了研究。alpina导致分离出九种新的头孢烷型去甲二萜类化合物,头孢拉啶A-I(1-9)和两种已知的类似物(10和11)。化合物1-8属于一类罕见的A-环收缩的头孢烷型降二萜类化合物,其中化合物8具有独特的四取代的2,5-环己二烯酮A-环。化合物9为稀有的13,14-断-17-去甲头孢烷型二萜。通过NMR、HRESIMS、ECD和X-射线衍射分析确定了它们的结构。生物学试验表明化合物10和11显示出中等的抗疟活性。
A chemical investigation of the 95% EtOH extract of the seeds of Cephalotaxus fortunei var. alpina led to the isolation of nine new cephalotane-type norditerpenoids, ceforalides A—I (1—9), and two known analogues (10 and 11). Compounds 1—8 belong to a rare class of A-ring-contracted cephalotane-type norditerpenoids, of which compound 8 incorporates a unique tetrasubstituted 2,5-cyclohexadienone A-ring. Compound 9 is a rare 13,14-seco-17-nor-cephalotane-type diterpenoid. Their structures were determined based on NMR, HRESIMS, ECD, and X-ray diffraction analysis. Biological tests revealed compounds 10 and 11 displayed moderate antimalarial activity.