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ent-Pimarane Diterpenoids from Siegesbeckia orientalis and Structure Revision of a Related Compound, J. Nat. Prod., 2009, 72: 2005–2008.
发布时间:2020-03-07 阅读数:1479 来源:原创
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Fei Wang †,‡, Xue-Lian Cheng , Ya-Ju Li , Song Shi , and Ji-Kai Liu *,†,‡


† State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences,  Kunming 650204, People’s Republic of China

BioBioPha Co., Ltd., Kunming 650204, People’s Republic of China


Abstract

Six new ent-pimarane diterpenoids, namely, ent-14,16-epoxy-8-pimarene-3,15R-diol (1), 7-hydroxydarutigenol (2),  9-hydroxydarutigenol (3), 16-O-acetyldarutigenol (4), 15,16-di-O-acetyldarutoside (5), and 16-O-acetyldarutoside (6),  were isolated from the ethanol extract of Siegesbeckia orientalis. Their structures were elucidated on the basis of  spectroscopic studies, and the absolute configuration of 1 was established by the modified Mosher’s method. Furthermore,  the structure of ent-12,16-epoxy-8-pimarene-2R,15,19-triol, recently isolated from the same plant, should be revised  as ent-14,16-epoxy-8-pimarene-2R,15R,19-triol (10).


文章链接:https://pubs.acs.org/doi/abs/10.1021/np900449r

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