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Cholestane and spirostane-type glycosides from the roots and rhizomes of Panicum repens L.
被引:4
|作者:
Temraz, Abeer
[1
,2
]
Hozaien, Hoda E.
[2
]
El-Tantawy, Walid H.
[4
]
El-Gindi, Omayma D.
[3
]
Taha, Kamilia F.
[4
]
机构:
[1] Umm Al Qura Univ, Fac Pharm, Mecca, Saudi Arabia
[2] Al Azhar Univ, Fac Pharm Girls, Cairo, Egypt
[3] Egyptian Russian Univ, Fac Pharm, Cairo, Egypt
[4] Natl Org Drug Control & Res, Cairo, Egypt
关键词:
Panicum repens;
Roots and rhizomes;
Poaceae;
Steroidal saponins;
Cholestane;
Spirostane;
STEROIDAL SAPOGENINS;
IDENTIFICATION;
D O I:
10.1016/j.phytol.2014.09.005
中图分类号:
Q94 [植物学];
学科分类号:
071001 ;
摘要:
Chemical investigation of the ethanolic extract from roots and rhizomes of Panicum repens L. has led to the isolation of four new steroidal glycosides, (25S)-spirost-5-en-3 beta-ol-3-O-alpha-L-rhamnopyranosyl(1 -> 4)-O-alpha-L-rhamnopyranosyl-(1 -> 4)-O-alpha-L-rhamnopyranosyl-(1 -> 2)-O-beta-D-glucopyranoside (1); 16-O-alpha-L-rhamnopyranosyl-cholest-5-en-2 alpha, 3 beta, 16 beta-triol-22-one-3-O-alpha-L-rhamnopyranoside (2); 16O-alpha-L-rhamnopyranosyl-cholest-5-en-3 beta, 16 beta diol-2 alpha-methoxy-22-one-3-O-alpha-L-rhamnopyranoside (3) and 16-O-alpha-L-rhamnopyranosyl-cholest-5-en-3 beta, 16 beta-diol-2 alpha-methoxy-3-O-alpha-L-rhamnopyranoside (4). Their structures were elucidated by means of extensive NMR spectral studies. Five known spirostane glycosides were also isolated and characterized by comparison with the literature data. (C) 2014 Phytochemical Society of Europe. Published by Elsevier B.V. All rights reserved.
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页码:173 / 178
页数:6
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