Complete 1H and 13C assignments of the four major saponins from Dioscorea villosa (wild yam)
Complete 1H and 13C assignments of the four major saponins from Dioscorea villosa (wild yam)
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DOI：
10.1002/mrc.2071
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发表时间：
2007-11-01
影响因子：
2
通讯作者：
De Voss, James J.
中科院分区：
文献类型：
--
作者：
Hayes, Patricia Y.;Lambert, Lynette K.;De Voss, James J.
Complete H-1 and C-13 spectral assignments for the four major steroidal saponins isolated by methanolic extraction of the roots of Dioscorea villosa, collected in North Carolina, United States (in summer and autumn), are presented in this paper. The structures were determined by a combination of H-1, C-13 and 2D NMR techniques and were found to be ((3 beta,25R)-26-(beta-D-glucopyranosyloxy)-22-methoxyfurost-5-en-3-yl-O-beta-D-glucopyranosyl-(1 -> 3)-O-beta-D-glucopyranosyl-(1 -> 4)-beta-O-[alpha-L-rhamnopyranosyl-(1 -> 2)]-beta-D-glucopyranoside (1) (or methyl parvifloside), ((3 beta,25R)-26-(beta-D-glucopyranosyloxy)-22 methoxyfurost-5-en-3-yl-O-alpha-L-rhamnopyranosyl-(1 -> 2)-O-[beta-D-ghucopyranosyl-(1 -> 4)]-beta-D-glucopyranoside (2)(or methyl protodeltonin), (3 beta,25R)-spirost-5-en-3-yl-O-beta-D-glucopyranosyl-(1 -> 3)-O-beta-D-glucopyranosyl-(1 -> 4)-O-[alpha-L-rhamnopyranosyl-(1 -> 2)]-beta-D-glucopyranoside (3) (or Zingiberensis saponin 1) and (3 beta,25R)-spirost-5-en-3-yl-O-alpha-L-rhamnopyranosyl-(1 -> 2)-O-[beta-Ds-glucopyranosyl -(1 -> 4)]-beta-D-glucopyranoside (4) (or deltonin). Copyright (c) 2007 John Wiley & Sons, Ltd.
