Rhodiolosides A-E, monoterpene glycosides from Rhodiola rosea |
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Authors: | Ma Guizhi Li Wei Dou Deqiang Chang Xiaolong Bai Hong Satou Tadaaki Li Jun Sun Dianjia Kang Tingguo Nikaido Tamotsu Koike Kazuo |
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Institution: | College of Pharmacy, Xinjiang Medical University, 8 Xinyi Road, Urumki 830054, P.R. China. |
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Abstract: | Five new monoterpene glycosides, rhodiolosides A-E (1-5), were isolated from the roots of Rhodiola rosea (Crassulaceae). Their structures were elucidated as (2E,6E,4R)-4,8-dihydroxy-3,7-dimethyl-2,6-octadienyl beta-D-glucopyranoside (1), (2E,4R)-4-hydroxy-3,7-dimethyl-2,6-octadienyl alpha-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside (2), (2E,4R)-4-hydroxy-3,7-dimethyl-2,6-octadienyl beta-D-glucopyranosyl(1-->3)-beta-D-glucopyranoside (3), (2E,4R)-4,7-dihydroxy-3,7-dimethyl-2-octenyl beta-D-glucopyranoside (4), and (2E)-7-hydroxy-3,7-dimethyl-2-octenyl alpha-L-arabinopyranosyl(1-->6)-beta-D-glucopyranoside (5), on the basis of various spectroscopic analyses and chemical degradation. |
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