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题名: Novel taxoids from the Chinese yew Taxus yunnanensis
作者: null(黎胜红); Zhang, HJ; Niu, XM; Yao, P; null(孙汉董); Fong, HHS
刊名: TETRAHEDRON
关键词: Taxus yunnanensis ; taxaceae ; barks ; abeotaxoids ; taxane glycosides ; orthoester ; C-2(20) epoxide ; taxuyunnanines W-Z ; 7-(beta-xylosyl)-N-methyl-taxol C ; 10-deacetyl-10-(beta-glucopyranosyl)-yunnanxane
英文摘要: Six new taxoids, taxuyunnanines W (1), X (2), Y (3), Z (5), 10-deacetyl-10-(beta-glucopyranosyl)-yunnanxane (8), and 7-(beta-xylosyl)-N-methyl-taxol C (10), as well as taxuchin B (4) and yunnanxane (7), have been isolated from the bark of Taxus yunnanensis. Compounds 1 and 2 were characterized as 11 (15-->1)-abeo taxoids containing an orthoester group, which have not been reported from any Taxus plants to date; isolates 3 and 5 are the examples of taxanes having a tetrahydronfuran ring, being reported only for the second time; and 8 is the first natural 6/8/6 skeletal type taxane glucosidic form. This is also the first report of a co-occurrence of xylosidation and N-methylation in a taxane (10). Compound 4 is the only known chlorine-containing taxane found in nature thus far, and is being reported from this plant for the first time. The structures were determined by spectroscopic and chemical means including 1D and 2D NMR spectra. (C) 2002 Elsevier Science Ltd. All rights reserved.
出版日期: 2003
卷号: 59, 期号:1, 页码:37-45
语种: 英语
收录类别: SCI ; IC
学科分类: Chemistry, Organic
ISSN号: 0040-4020
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/4606
Appears in Collections:植物化学与西部植物资源持续利用国家重点实验室_期刊论文

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作者单位: 1.Univ Illinois, Program Collaborat Res Pharmaceut Sci, Dept Med Chem & Pharmacognosy, Coll Pharm, Chicago, IL 60612 USA
2.Chinese Acad Sci, Lab Phytochem, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China

Recommended Citation:
Li, SH; Zhang, HJ; Niu, XM; Yao, P; Sun, HD; Fong, HHS.Novel taxoids from the Chinese yew Taxus yunnanensis,TETRAHEDRON,2003,59(1):37-45
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