Absolute configuration of flavanone-benzofuranone-type biflavonoids and 2-benzyl-2-hydroxybenzofuranones

被引：19

作者：

Bekker, R ^{[1
]}

Brandt, EV ^{[1
]}

Ferreira, D ^{[1
]}

机构：

[1] UNIV ORANGE FREE STATE,DEPT CHEM,ZA-9300 BLOEMFONTEIN,SOUTH AFRICA

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1 | 1996年 / 20期

关键词：

D O I：

10.1039/p19960002535

中图分类号：

O62 [有机化学];

学科分类号：

070303 [有机化学]; 081704 [应用化学];

摘要：

The O-1-C-2 and C-3-C-4 bonds in the flavanone-benzofuranone-type biflavonoids 1 and 3 are subject to cleavage with sodium cyanoboranuide in trifluoroacetic acid at 0 degrees C. Conformational information available from computational data in conjunction with H-1 NMR and CD spectroscopic observations of the biflavonoids and their degradation products have permitted assignment of absolute configuration to three biflavonoids and the 2-benzyl-2-hydroxy-1-benzofuran-1-benzofuran-3(2H)-one group of natural products.

引用

页码：2535 / 2540

页数：6

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