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Title: Determining ring-F configuration in spirostane-type steroidal sapogenins by <sup>1</sup>H NMR
Authors: Agrawal, Pawan K
Issue Date: May-2005
Publisher: CSIR
Series/Report no.: <b>Int</b>.<b>Cl</b>.<b><sup>7</sup> C 07 J</b>
Abstract: A comparison of <sup>1</sup>H NMR chemical shifts for 25<i>R</i> and 25<i>S</i> spirostane-type steroidal sapogenins and saponins suggest that orientation of 27-Me group has quite a different influence on chemical shifts of the methylene protons occupying <img src='/image/spc_char/beta.gif' border=0>-and <img src='/image/spc_char/gamma.gif' border=0>-positions, thus providing valuable information about the establishment 25<i>R</i>-and 25<i>S</i>-stereochemistry in these compounds.
Description: 1092-1094
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.44B(05) [May 2005]

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