Complete assignments of H-1 and C-13 NMR spectral data for three polyhydroxylated 12-ursen-type triterpenoids from Dischidia esquirolii

	Complete assignments of H-1 and C-13 NMR spectral data for three polyhydroxylated 12-ursen-type triterpenoids from Dischidia esquirolii
	Ma, MX ; Yang, CR ; Zhang, YJ
	2008
发表期刊	MAGNETIC RESONANCE IN CHEMISTRY
ISSN	0749-1581
卷号	46 期号:6 页码:571-575
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.
关键词	Nmr 1d/2d Nmr Polyhydroxylated Ursolic Acids Epimer Dischidia Esquirolii Asclepiadaceae Uncaria-tomentosa Constituents Glycosides Plants
学科领域	Chemistry ; Multidisciplinary ; Chemistry ; Physical ; Spectroscopy
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/1877
专题	植物化学与西部植物资源持续利用国家重点实验室
推荐引用方式 GB/T 7714	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[J]. MAGNETIC RESONANCE IN CHEMISTRY,2008,46(6):571-575.
APA	Ma, MX,Yang, CR,&Zhang, YJ.(2008).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,46(6),571-575.
MLA	Ma, MX,et al."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 46.6(2008):571-575.

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