Two new isoflavone derivatives from the roots of an Egyptian collection of Lotus polyphyllos.
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.
Abdel-Kader
Maged S
MS
Department of Pharmacognosy, Faculty of Pharmacy, King Saud University, P.O. Box 2457, Riyadh-11451, Saudi Arabia. mpharm101@hotmail.com
Amer
Masouda E
ME
Tang
Shoubin
S
Kingston
David G I
DG
D004534:Egypt; D007529:Isoflavones / Q000737:chemistry / Q000302:isolation & purification*; D000070116:Lotus / Q000737:chemistry*; D013058:Mass Spectrometry; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet
D007529:Isoflavones