International Journal of Pharma and Bio Sciences
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10.22376/ijpbs.2019.10.1.p1-12
Volume 4 Issue 4
2013 (October - December)
ISOLATION AND PHYTOCHEMICAL STUDIES OF QUERCETIN AND QUERCETIN 3-O-RHAMNOSIDE
In this present work the fresh flowers of Allamanda Cathartica Linn. were collected and the solution of Allamanda Cathartica was extracted with 90% methanol under reflux. The alcoholic extract was concentrated in vacuo and the aqueous concentrate, successively fractionated with benzene, peroxide free diethylether and ethylacetate. The benzene fraction was not yielding any isolable material. The diethyl ether fraction yielded quercetin and ethylacetate fraction yielded quercetin 3-O-rhamnoside (quercitrin). The structure of the isolated compounds was characterized by UV, lessThan sup greaterThan 1 lessThan /sup greaterThan H-NMR and lessThan sup greaterThan 13 lessThan /sup greaterThan C-NMR spectra and identified by paper chromatography (PC).
K.HEMA AND D. SUKUMAR
AllamandaCathartica Linn.; quercetin; quercitrin.
519-524