Flacourside, a new 4-oxo-2-cyclopentenylmethyl glucoside from the fruit juice of Flacourtia indica

Abstract

A new glucoside ester, named flacourside, has been isolated together with known methyl 6- O-( E)- p-coumaroyl glucopyranoside and 6- O-( E)- p-coumaroyl glucopyranose from the n-butanol extract of fruit juice of the Flacourtia indica. The structure of flacourside has been determined to be 4-oxo-2-cyclopentenylmethyl 6- O-( E)- p-coumaroyl-β- d-glucopyranoside on the basis of spectroscopic studies.