Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/80991
Type: Artigo de periódico
Title: Prenylated flavonoids from Deguelia hatschbachii and their systematic significance in Deguelia
Author: Magalhaes, AF
Tozzi, AMGA
Magalhaes, EG
Moraes, VRD
Abstract: Chemical investigation of dichloromethane and petrol extracts from the roots of D. hatschbachii A. M. G. Azevedo furnished thirteen compounds from which five are described for the first time and their structures were determined to be 3-(4 ' -hydroxyphenyl)-5-methoxy-6-(3,3-dimethylallyl)2 ' ,2 ' -dimethylchromene-(5 ' ,6 ' :8,7)-3-(propyl-2-one)-4H-1-benzo-2,3-dihydropyran-2,4-dione; 6,4 ' -dihydroxy-3-(3,3-dimethylallyl)-2 ' ,2 ' -dimethylchromene (5 ' ,6 '. 5,4)-2-methoxy deoxybenzoin; 6,4 ' -dihydroxy-3-(3,3-dimethylallyl)-2 ' ,2 ' -dimethylchromene (5 ' ,6 ' :5,4)-2-methoxy-8-(propyl-2-one) deoxybenzoin; 6-(3,3-dimethylallyl)-2 ' ,2 ' -dimethylchromene (5 ' ,6 ' :4,5)-4 ' -hydroxy-3-methoxy stilbene and 3,5-dimethoxy-4 ' -hydroxy-4-(3,3-dimethylallyl) stilbene by spectral analysis (UV, IR, MS and 1D- and 2D- NMR experiments). The root extracts and some isolated compounds were bioactive, as revealed by bioautography and brine shrimp lethality assays. (C) 2001 Elsevier Science Ltd. All rights reserved.
Subject: Deguelia hatschbachii
leguminosae
flavonoids
stilbenes
deoxybenzoins
4-hydroxy-3-phenylcoumarins
flavanones
isoflavones
lupeol
bioassays
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/S0031-9422(00)00509-4
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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