cqvip:Objective:To investigate the butanol fraction of the water/acetone extract and isolate of the new flavonoids from Launeae arboescens.Methods:The compounds were isolated by liquid chromatographic methods and their structures were identified by using spectroscopic analysis.Results:The isolated compounds were identified as:7-0-[α-rhamnopyranosyl 4',5,6-Trihydroxy flavone 1,4',5'-Di-Methoxy 7-(5"-Me Hexan)1-oyl flavanone 2,3"-isopropyl pyrano[1":7,4":6]3',4',5',5-Tetrahydroxy flavanone 3,5,4',5'-Tri-Hydroxy 7-(3"-Me butan)-yl flavanone 4.5,7-Dihydroxy-2',4',5'-trimethoxy-isoflavanone 5,5,6,7,4'-tetrahydroxy flavonol 6,7-O-[α-rhamnopyranosyl-(1->6)-β-glucopyranosyl]-4',5,7-tri-hydroxy-flavanone 7,7-O-[α-rhamnopyranosyl-(1->6)-β-glucopyranosyl]3',5-Dihydroxy 4'-Methoxy flavanone 8.Conclusions:The presence of different types of bioactive flavonoids in Launeae arhoescens extract can explain the large ethnopharmacological uses and the potential activity of this medicinal plant.
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