Ent-kaurene Diterpenoids from Euphorbia Wangii

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (5): 651.

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Ent-kaurene Diterpenoids from Euphorbia Wangii

JIA Zhong-Jian, SHI Jian-Gong, YANG Li

Institute of Organic Chemistry, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000

Received:1992-10-31 Revised:1993-03-09 Online:1993-05-24 Published:1993-05-24

Abstract

Abstract: From the acetone extract of the whole plant of Euphorbia tcanyu(Euphorbiaceae), four new ent-kaurene diterpenoids, named as euphorangin A, B, Cand D, were obtained.Their structures were elucidated as ent-llα-acetoxykaur-16-en-3β-ol, ent-kaur-16-en-3β, 15β-diol, ent-11α, 16α-epoxykauran-3β-ol and ent-11α, 16α-epoxykauran-3-one, respectively, on the basis of spectral methods (EIMS, IR, ¹H NMR, ¹³CNMR, DEPT) including 2D NMRtechniques (¹H-¹H COSY, ¹H-¹³C COSY, ¹H-¹H NOESY) and chemical methods.

Key words: Euphorbia wangii, Euphorbiaceae, Ent-kaurene diterpenoids

TrendMD:

JIA Zhong-Jian, SHI Jian-Gong, YANG Li. Ent-kaurene Diterpenoids from Euphorbia Wangii[J]. Chem. J. Chinese Universities, 1993, 14(5): 651.

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Ent-kaurene Diterpenoids from Euphorbia Wangii

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