Four new flavan-4-ol glycosides from Pneumatopteris pennigera

被引：10

作者：

Tanaka, N ^{[1
]}

Ushioda, T ^{[1
]}

Fuchino, H ^{[1
]}

Braggins, JE ^{[1
]}

机构：

[1] UNIV AUCKLAND,DEPT BOT,AUCKLAND,NEW ZEALAND

来源：

AUSTRALIAN JOURNAL OF CHEMISTRY | 1997年 / 50卷 / 04期

关键词：

D O I：

10.1071/C96108

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

From the fronds of Pneumatopteris pennigera, four new flavan-4-ol glycosides, named pneumatopterins A, B, C and D, were isolated. Their structures were determined as (2S,4R)-5,7-di-beta-D-glucopyranosyloxy-6-hydroxymethyl-8-methylflavan-4-ol, (2S,4R)-5,7-di-beta-D-glucopyranosyloxy-6,8-dimethylflavan-4-ol, (2S,4R)-5-beta-D-glucopyranosyloxy-7-hydroxy-6-hydroxymethyl-8-methyl-4,2 ''-oxo-flavan and (2S,4R)-5-beta-D-glucopyranosyloxy-7-hydroxy-6,8-dimethyl-4,2 ''-oxo-flavan, respectively, on the basis of spectroscopic data and chemical correlations.

引用

页码：329 / 332

页数：4