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Four New Podocarpane-Type Trinorditerpenes from Aleurites moluccana

✍ Scribed by Hai-Yang Liu; Shi-Jin Li; Yi Zhao; Wei Ni; Xiao-Jiang Hao; Jun-Zhu Li; Yan Hua; Bai-Bo Xie; Chen Qing; Chang-Xiang Chen

Publisher
John Wiley and Sons
Year
2007
Tongue
German
Weight
190 KB
Volume
90
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Four new podocarpane‐type trinorditerpenenes, (5__β__,10__α__)‐12,13‐dihydroxypodocarpa‐8,11,13‐trien‐3‐one (1), (5__β__,10__α__)‐12‐hydroxy‐13‐methoxypodocarpa‐8,11,13‐trien‐3‐one (2), (5__β__,10__α__)‐13‐hydroxy‐12‐methoxypodocarpa‐8,11,13‐trien‐3‐one (3), and (3__α__,5__β__,10__α__)‐13‐methoxypodocarpa‐8,11,13‐triene‐3,12‐diol (4), together with four known diterpenes, 12‐hydroxy‐13‐methylpodocarpa‐8,11,13‐trien‐3‐one (5), spruceanol (6), ent‐3__α__‐hydroxypimara‐8(14),15‐dien‐12‐one (7), and ent‐3__β__,14__α__‐hydroxypimara‐7,9(11),15‐triene‐12‐one (8), were isolated from the twigs and leaves of Aleurites moluccana. Their structures were elucidated by means of comprehensive spectroscopic analyses, including NMR and MS. Except 8, all compounds were evaluated for their cytotoxicity; compound 4 exhibited moderate inhibitory activity against Raji cells with an IC~50~ value of 4.24 μg/ml.

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