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论文 |
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论文题目: |
Identification of new qingyangshengenin and caudatin glycosides from the roots of Cynanchum otophyllum
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论文题目英文: |
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作者: |
Ma, Xiao-Xia; Wang, Dong; Zhang, Ying-Jun; Yang, Chong-Ren
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论文出处: |
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年: |
2011
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卷: |
76 |
期: |
10-11 |
页: |
1003-1009 |
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发表期刊: |
STEROIDS |
第一作者所在部门: |
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收录类别: |
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影响因子: |
2.588
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摘要: |
HPLC analysis of the roots of Cynanchum otophyllum Scheind (Asclepiadaceae) led to the isolation of six new pregnane glycosides, specifically otophyllosides N-P (2-4) and otophyllosides Q-S (7-9), in addition to the identification of three known C-21 steroidal glycosides, otophylloside A (1), otophylloside B (5) and caudatin 3-O-beta-D-glucopyranosyl-(1 -> 4)-beta-D-oleandropyranosyl-(1 -> 4)-beta-D-cymaropyranosyl-(1 -> 4)-beta-D-cymaropyranoside (6). The structure of each glycoside was determined by detailed spectroscopic analysis and chemical methods. All compounds contain qingyangshengenin or caudatin aglycones and a straight sugar chain consisting of 4-7 hexosyl moieties with the mode of 1 -> 4 linkage. The optically isomeric monosaccharides, D- and L-cymarose, coexisted in both otophyllosides R (8) and S (9). (C) 2011 Elsevier Inc. All rights reserved. |
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