Cysteine sulfoxide derivatives in Petiveria alliacea

被引：53

作者：

Kubec, R ^{[1
]}

Musah, RA ^{[1
]}

机构：

[1] SUNY Albany, Dept Chem, Albany, NY 12222 USA

来源：

PHYTOCHEMISTRY | 2001年 / 58卷 / 06期

关键词：

Petiveria alliacea; phytolaccaccae; S-benzylcysteine sulfoxide; petiveriin; S-benzylcysteine; flavor precursor;

D O I：

10.1016/S0031-9422(01)00304-1

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Two diastereomers of S-benzyl-L-cysteine sulfoxide have been isolated from fresh roots of Petiveria alliacea. Their structures and absolute configurations have been determined by NMR, MALDI-HRMS, IR and CD spectroscopy and confirmed by comparison with authentic compounds. Both the R-S and S-S diastereomers of the sulfoxide are present in all parts of the plant (root, stem, and leaves) with the latter diastereomer being predominant. Their total content greatly varied in different parts of the plant between 0.07 and 2.97 mg g(-1) fr. wt, being by far the highest in the root. S-Benzylcysteine has also been detected in trace amounts (< 10 mug g(-1) fr. wt) in all parts of the plant. This represents the first report of the presence of S-benzylcysteine derivatives in nature. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：981 / 985

页数：5

共 16 条

[1] TRITHIOLANIACIN, A NOVEL TRITHIOLAN FROM PETIVERIA-ALLIACEA [J].