PROFISETINIDIN-TYPE 4-ARYLFLAVAN-3-OLS AND RELATED DELTA-LACTONES

被引：16

作者：

BAM, M

MALAN, JCS

YOUNG, DA

BRANDT, EV

FERREIRA, D

机构：

[1] Department of Chemistry, University of the Orange Free State, Bloemfontein, 9300

来源：

PHYTOCHEMISTRY | 1990年 / 29卷 / 01期

关键词：

3-O-galloylflavan-3-ols; 4-arylflavan-3-ols; Burkea africana; heartwood; Leguminosae; Peltophorum africanum; profisetinidins; δ-lactones;

D O I：

10.1016/0031-9422(90)89051-A

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：

The natural occurrence of the first profisetinidin-type 4-arylflavan-3-ols, 4α- and 4β-(2,4-dihydroxy-3-methoxyphenyl)-(-)-fisetinidols, and a related δ-lactone, 7,8,9,13-tetrahydroxy-2-(3,4-dihydroxyphenyl)-2,3-trans-3,4-cis-2,3-10-trihydrobenzopyrano[3,4-c]-2-benzopyran-1-one in the heartwood of Peltophorum africanum is demonstrated. In the heartwood of Burkea africana the δ-lactone is accompanied by its 2-(3,4,5-trihydroxyphenyl)-analogue and the 3-O-galloyl ester of (-)-robinetinidol, the first gallate involving a 5-deoxy flavan-3-ol. The biogenetic implications of the coexistence of these novel metabolites are briefly discussed. © 1990.

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页码：283 / 287

页数：5

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