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A new triterpenoid saponin from Glinus oppositifolius
Thuy Thanh Phan1, Lien T M Do1, Trung Van Phung2
1Institute of Environment - Energy Technology, SaiGon University, Ho Chi Minh city, Vietnam.
Abstract:
From the ethanol extract of Glinus oppositifolius, collected at Phu Yen province, Viet Nam, one new triterpenoid saponin (1) and four known compounds (2-5) were isolated. By means of NMR and HR-ESI-MS analyses, their structure was elucidated as 3-O-(β-D-xylopyranosyl-(1→3)-β-D-xylopyranosyl)spergulagenin A or glinusopposide V (1), glinusopposide L (2), spergulin B (3), vitexin (4) and astralagin (5). Two compounds (1-2) showed weak inhibitory activity against α-glucosidase.
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