INVESTIGATION ON CHEMICAL CONSTITUENT OF WATER FRACTION OF PIPER BETLE L.

Abstract

From water fraction of the whole plant of Piper betle, three compounds
including thymidine (1), adenosine (2), and 1,2-di-O-β-glucopyranosyl-4-
allylbenzene (3) were isolated. Their chemical structures were elucidated by
analyses of their NMR spectral data and comparison with those reported in the
literature. Among three isolated compounds, this is the first report the isolation
of 1,2-di-O-β-glucopyranosyl-4-allylbenzene from P. betle.