25R/25S stereochemistry of spirostane-type steroidal sapogenins and steroidal saponins via chemical shift of geminal protons of ring-F

被引：73

作者：

Agrawal, PK ^{[1
]}

机构：

[1] Cent Inst Med & Aromat Plants, Lucknow 226016, Uttar Pradesh, India

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 2003年 / 41卷 / 11期

关键词：

NMR; H-1; steroidal sapogenins; steroidal saponins; stereochemistry; ring-F;

D O I：

10.1002/mrc.1278

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A method based on the differences among the H-1 NMR chemical shifts of geminal protons of ring-F methylene resonances (H-2-23, H-2-24 and H-2-26) is proposed for ascertaining the 25R/25S stereochemistry of ring-F unsubstituted spirostane-type steroidal sapogenins and steroidal saponins. Copyright (C) 2003 John Wiley Sons, Ltd.

引用

页码：965 / 968

页数：4

共 35 条

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