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DOI: 10.1055/s-2003-38885
First Isolation of a Symmetrical Glycosylated Methylene Bisflavonoid
Publication History
Received: July 28, 2002
Accepted: January 4, 2003
Publication Date:
23 April 2003 (online)
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Abstract
Blutaparon portulacoides (St. Hil.) Mears (= Philoxerus portulacoides St. Hil.) (Amaranthaceae) is a species occurring in the Brazilian coast in two botanical varieties. The chemical study of an ethanolic extract led to the isolation of spinacetin 3-O-robinobioside as well as an unique glycosylated pseudo-dimeric flavonoid identified as 8,8″″-methylene bis(spinacetin 3-O-robinobioside) mainly by NMR analyses (1H, 1H-1H COSY, 13C, HMQC, HMBC) and MALDI-TOF mass spectrometry.
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Sônia Soares Costa
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