ISOFLAVONE ATROPISOMERS FROM PISCIDIA-ERYTHRINA

被引：6

作者：

TAHARA, S ^{[1
]}

MORIYAMA, M ^{[1
]}

INGHAM, JL ^{[1
]}

MIZUTANI, J ^{[1
]}

机构：

[1] UNIV READING,DEPT FOOD SCI,READING RG6 2AP,ENGLAND

来源：

PHYTOCHEMISTRY | 1993年 / 34卷 / 02期

关键词：

PISCIDIA-ERYTHRINA; LEGUMINOSAE; JAMAICAN DOGWOOD; ISOFLAVONES; ATROPISOMERS; ROTATIONAL ISOMERS; ABSOLUTE CONFIGURATION;

D O I：

10.1016/0031-9422(93)80043-R

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：

A further investigation of the isoflavonoid constituents in the root bark of Jamaican dogwood (Piscidia erythrina) has revealed four new isoflavones, each of which possesses a fully (penta)-substituted B-ring. These compounds form two pairs of atropisomers (erythbigenones A and B, and erythbigenols A and B). The isoflavones comprising each pair are diastereoisomeric and can be separated by TLC. The relative stereo-structures of these atropdiastereoisomers have been established by a combination of spectroscopic and chemical methods. As each atropdiastereoisomer was shown to be a mixture of two enantiomers, erythbigenone A was separated into its optically active components so that the relationship between absolute stereochemistry and the CD Cotton effects could be determined.

引用

页码：545 / 552

页数：8

共 25 条

[1] ACETOGENIC ISOQUINOLINE ALKALOIDS .20. ATROP-DIASTEREOMER SEPARATION BY RACEMATE RESOLUTION TECHNIQUES - N-METHYL-DIONCOPHYLLINE-A AND ITS 7-EPIMER FROM ANCISTROCLADUS-ABBREVIATUS [J].