First isolation of a symmetrical glycosylated methylene bisflavonoid

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...

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Published inPlanta medica Vol. 69; no. 4; p. 382
Main Authors De Oliveira, Daniela B, de Almeida, Ana Paula, De B A Simões, Gabriela L, Auvin, Catherine, Kaiser, Carlos R, Costa, Sônia S
Format Journal Article
LanguageEnglish
Published Germany 01.04.2003
Subjects
Amaranthaceae
Flavonoids - chemistry
Glycosylation
Humans
Magnetic Resonance Spectroscopy
Phytotherapy
Plant Extracts - chemistry
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Summary: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.
ISSN:0032-0943
DOI:10.1055/s-2003-38885