Two new isoflavone derivatives from the roots of an Egyptian collection of Lotus polyphyllos |
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Authors: | Abdel-Kader Maged S Amer Masouda E Tang Shoubin Kingston David G I |
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Institution: | Department of Pharmacognosy, Faculty of Pharmacy, King Saud University, P.O. Box 2457, Riyadh-11451, Saudi Arabia. mpharm101@hotmail.com |
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Abstract: | Investigation of the roots of Lotus polyphyllos Clarke resulted in the isolation of two new isoflavone derivatives; 4'-O-methylerythrinin C (3) and 4'-O-methyl-2'-hydroxydihydroalpinumisoflavone (4). In addition, the three known isoflavone derivatives 4'-O-methylalpinumisoflavone (1) lupinalbin F (5), 4',7-dimethoxy-5-hydroxyisoflavone (6), and the phenylpropanoid ester tetracosyl p-coumarate (2) were also identified. The structures were determined from spectroscopic data. |
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