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题名: Complete assignment of H-1 and C-13 NMR data for nine protopanaxatriol glycosides
作者: Teng, RW; Li, HZ; Chen, JT; Wang, DZ; He, YN; Yang, CR
刊名: MAGNETIC RESONANCE IN CHEMISTRY
关键词: NMR ; H-1 NMR ; C-13 NMR ; 2D NMR ; protopanaxatriol glycoside ; Panax notoginseng ; complete NMR assignments ; glycosylation shift effect
英文摘要: Nine protopanaxatriol glycosides isolated from mild acid hydrolysis products of crude root saponins of Panax notoginseng were identified as 20(R)-ginsenoside-Rh1, 20(S)-ginsenoside-Rh1, ginsenoside-Rg1, -Re and -Rg2, notoginsenoside-R2 and -R1, a mixture of 25-hydroxy-20(S)-ginsenoside-Rh1 and its C-20 (R) epimer, ginsenoside-Rh4. The complete assignments of the H-1 and C-13 NMR chemical shifts for these glycosides were obtained by means of 2D NMR techniques, including H-1-H-1 COSY, ROESY, HMQC, HMBC and HMQC-TOCSY spectra. The glycosylation shift effect of protopanaxatriol and the differences in chemical shifts between 20(R)- and 20(S)-protopanaxatriol isomers are also discussed. Except for ginsenoside-Re and -Rg2, complete NMR assignments of the other seven glycosides are reported for the first time. Copyright (C) 2002 John Wiley Sons, Ltd.
出版日期: 2002-07-01
卷号: 40, 期号:7, 页码:483-488
语种: 英语
收录类别: SCI
学科分类: Chemistry, Multidisciplinary; Chemistry, Physical; Spectroscopy
ISSN号: 0749-1581
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/14235
Appears in Collections:离退休_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China

Recommended Citation:
Teng, RW; Li, HZ; Chen, JT; Wang, DZ; He, YN; Yang, CR.Complete assignment of H-1 and C-13 NMR data for nine protopanaxatriol glycosides,MAGNETIC RESONANCE IN CHEMISTRY,2002,40(7):483-488
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