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题名: Complete assignments of H-1 and C-13 NMR spectral data for three polyhydroxylated 12-ursen-type triterpenoids from Dischidia esquirolii
作者: Ma, MX ; Yang, CR ; null(张颖君)
刊名: MAGNETIC RESONANCE IN CHEMISTRY
关键词: NMR ; 1D/2D NMR ; polyhydroxylated ursolic acids ; epimer ; Dischidia esquirolii ; Asclepiadaceae ; UNCARIA-TOMENTOSA ; CONSTITUENTS ; GLYCOSIDES ; PLANTS
英文摘要: The complete assignments of all the H-1 and C-13 NMR signals of three polyhydroxylated 12-ursen-type triterpenes, 6 beta,19 alpha,22 alpha-trihydroxyurs-12-en-3-oxo-28-oic acid (1), 3 beta,6 alpha,19 alpha,23-tetrahydroxyurs-12-en-28-oic acid (2) and 3 beta,6 beta,19 alpha,23-tetrahydroxyurs-12-en-28-oic acid (3), were carried out by means of homo- and hetero-nuclear two-dimensional NMR experiments. Compounds 1-3 were isolated from the aerial parts of Dischidia esquirolii. Of them, 1 and 2 were identified as new polyhydroxylated ursolic acid derivatives. Compound 2 is the C-6 hydroxyl epimer of 3, which was isolated first from Adina rubella, and its structure is revised in this paper. Copyright (C) 2008 John Wiley & Sons, Ltd.
出版日期: 2008
卷号: 46, 期号:6, 页码:571-575
语种: 英语
收录类别: sci
学科分类: Chemistry; Multidisciplinary; Chemistry; Physical; Spectroscopy
ISSN号: 0749-1581
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/1877
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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Recommended Citation:
Ma, MX; Yang, CR; Zhang, YJ.Complete assignments of H-1 and C-13 NMR spectral data for three polyhydroxylated 12-ursen-type triterpenoids from Dischidia esquirolii,MAGNETIC RESONANCE IN CHEMISTRY,2008,46(6):571-575
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