FLAVONOID CHEMISTRY OF SIPHONOGLOSSA

被引：13

作者：

HILSENBECK, RA ^{[1
]}

MABRY, TJ ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT BOT,AUSTIN,TX 78713

来源：

PHYTOCHEMISTRY | 1990年 / 29卷 / 07期

基金：

美国国家科学基金会;

关键词：

Acanthaceae; apigenin C-glycosylflavones; chemotaxonomy; embigenin; embinin; isoembigenin; isovitexin; mass spectrometry; permethylation; Siphonoglossa; vicenin-2; vitexin;

D O I：

10.1016/0031-9422(90)83034-X

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：

Seven species of Siphonoglossa section Siphonoglossa were found to elaborate only apigenin-based C-glycosylflavones that are methylated either at the 7- and 4′-positions, only the 7-position, or are not methylated at all. Fourteen C-glucosyl derivatives of apigenin including the 6-C-glucosyl types 6-C-glucosylapigenin 7,4′-dimethyl ether (embigenin, reported here for the first time), embinin, isovitexin, swertisin and some 2′-O-glycosyl derivatives of these latter two compounds, were obtained from these species. The 8-C-glucosyl (i.e. isoembigenin, vitexin) and 6,8-di-C-glycosyl (i.e. vicenin-2) types occur less frequently in the species investigated here. The flavonoid chemistry correlates with other sources of data suggesting that the species of this section form a natural group. © 1990.

引用

页码：2181 / 2185

页数：5

共 12 条

[1] STRUCTURAL DETERMINATION OF C-GLYCOSYLFLAVONES BY MASS-SPECTROMETRY OF THEIR PERMETHYL ETHERS - O-GLYCOSYL-6-C-GLYCOSYLFLAVONES [J].