Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/76739
Type: Artigo de periódico
Title: Twenty-three flavonoids from Lonchocarpus subglaucescens
Author: Magalhaes, AF
Tozzi, AMGA
Sales, BHLN
Magalhaes, EG
Abstract: Chemical investigation of Lonchocarpus subglaucescens roots resulted in the isolation of 23 flavonoids, whose structures were elucidated by spectroscopic methods. Ponganone III, ovalichromene B, purpurenone, 12 alpha-hydroxyrotenone, (2,3-trans-3,4-trans)-3,4,5,8-tetramethoxy-[2 ',3 ':7,6]-furanoflavan, 6 ',6 '-dimethylchromeno-[2 ',3 ':7,8]-flavone and 3',4'-methylenedioxy-6 ',6 '-dimethylchromeno-[2 ',3 ':7,8]-flavone had been previously isolated from other sources. The 16 new flavonoids are 6-methoxy-6 ',6 '-dimethylchromeno-[2 ',3 ':7,8]-flavanone, (2S)-5,6-dimethoxy-[2 ',3 ':7,8]-furanoflavanone, (2R,3R)-3,5,6-trimethoxy-[2 ',3 ',7,8]- furanoflavanonol, 3,4-methylenedioxy-2'-methoxy-6 ',6 '-dimethylchromeno-[2 ',3 ':4',3']-beta-hydroxychalcone, (Z/E)-3,4-methylenedioxy-2'-methoxy-6 ',6 '-dimethylchromeno-[2 ',3 ':4',3']-beta-methoxychalcone, (E)-2'-methoxy-6 ',6 '-dimethylchromeno-[2 ',3 ':4',3']-9-methoxychalcone, (2,4-cis)-3',4'-methylenedioxy-4,5,8-trimethoxy-[2 ', 3 ':7,6]-furanoflavan, (2,4-cis)-4,5,6-trimethoxy-[2 ',3 ': 7,8]furanoflavan, 3,4-dimethoxy-2'-hydroxy-6 ',6 '-dimethylchromeno-[2 ',3 ':4',3']-chalcone, 3,4-methylenedioxy-2'-hydroxy-3',6'-dimethoxy-[2 ',3 ':4',5']-furanochalcone, (2,3-trans-3,4-cis-3,4,5,6-tetramethoxy-[2 ',3 ':7,8]-furanoflavan, (2,3-trans-3,4-trans)-3',4'-methylenedioxy-3,4,5,8-tetramethoxy-[2 ',3 ':7,6]-furanoflavan, (2,3-trans-3,4-cis)-3',4'-methylenedioxy-3,4,5,6-tetramethoxy- [2 ',3 ':7,8]-furanoflavan, 3,4-methylenedioxy-2'-methoxy-[2 ',3 ': 4',3']-dihydrochalcone and 3',4'-methylenedioxy-8-methoxy-5-hydroxy-6 ',6 ':7,6]-isoflavone.
Subject: Lonchocarpus subglaucescens
Leguminosae
roots
chalcone
dihydrochalcone
dihydroflavanonol
flavan
flavanone
flavone
dibenzoylmethane
isoflavone
rotenoid
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/0031-9422(96)00134-3
Date Issue: 1996
Appears in Collections:Unicamp - Artigos e Outros Documentos

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