On-line identification of unstable catalpol derivatives from Jamesbrittenia fodina by LC-MS and LC-NMR

被引：24

作者：

Cogne, AL

Queiroz, EF

Wolfender, JL

Marston, A

Mavi, S

Hostettmann, K ^{[1
]}

机构：

[1] Univ Lausanne, Inst Pharmacognosie & Phytochim, CH-1015 Lausanne, Switzerland

[2] Univ Zimbabwe, Dept Pharm, Harare, Zimbabwe

来源：

PHYTOCHEMICAL ANALYSIS | 2003年 / 14卷 / 02期

关键词：

LC-NMR; LC-MS; catalpol derivative; cis/trans cinnamoyl isomers; Jamesbrittenia fodina; Scrophulariaceae;

D O I：

10.1002/pca.689

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

LC-UV-MS analysis of the methanol extract of Jamesbrittenia fodina O. M. Hilliard (Scrophulariaceae) revealed the presence of cinnamic ester derivatives. Two isomeric pairs of these constituents were detected, but could not be isolated. In order to identify these unstable compounds, LC-H-1-NMR spectra were obtained for each individual isomer and standard NMR measurements were performed in-mixture. The spectra clearly demonstrated that the fractions consisted of mixtures of cis and trans cinnamoyl catalpol glycoside esters. Copyright (C) 2003 John Wiley Sons, Ltd.

引用

页码：67 / 73

页数：7

共 19 条

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