Isolation and characterization of 6-C-β-D xylosyl, 7-O- β-Dglucosylquercetin from Cucurbita maxima (Pumpkin) flowers

M.M. Senthamilselvi¹, N. Muruganantham^2*, S. Solomon^3
1Principal, Government Arts College, Ariyalur, Tamilnadu, India.
²Assistant Professor, Department of chemistry, Roever Engineering College, Perambalur, Tamilnadu, India.
³Department of chemistry, Periyar E.V.R. College (Autonomous), Trichy, Tamilnadu, India.

A B S T R A C T
In Indian system of medicine, a large number of drugs of either herbal or mineral origin have been advocated for various types of diseases, India has been one of the pioneers in the development and practice of well-documented original systems of medicine, particularly Ayurveda, Siddha and Unani. A compound has been isolated from the flowers of Cucurbita maxima. The isolated flavonol glycoside was identified as 6-C-β-D xylosyl, 7-O-β-Dglucosylquercetin. The chemical structure of this compound was elucidated based on spectroscopic data like UV, NMR (¹H, ¹³C) and MS. This is the first report of isolation of this compound from Cucurbita maxima flowers.
Keywords: Cucurbita maxima, UV, NMR (¹H, ¹³C) and MS, 6-C-β-D xylosyl, 7-O-β-D glucosylquercetin