Author:
Asres Kaleab,Mascagni Paolo,O’Neill Melanie J.,Phillipson David
Abstract
Abstract
Seven isoflavonoids have been isolated from the seeds of Bolusanthus speciosus (Bolus) Harms. Five of these com pounds were identified as the isoflavones genistein (1), biochanin A (2), orobol (3), pratensein (4) and 3′-O-methylorobol (5). The remaining two compounds were characterised as the novel isoflavone 3′-O-methylpratensein (6) and the new 3-hydroxyisoflavanone bolusanthin (7). Identification and characterisation was by means of spectroscopic techniques (UV, IR, MS and 1H NMR). NOe irradiation of the C-2 proton of 3′-O-methylpratensein (6) was used to establish unequivocally the oxygenation pattern of the B-ring.
Subject
General Biochemistry, Genetics and Molecular Biology
Cited by
19 articles.
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