Ipomopsin and hymenain, two biscoumarins from seeds of Hymenaea courbaril

Autor(es)

Simoes, Kelly ^{[1, 2]} ; Du, Jiang ^[3] ; Pessoni, Rosemeire A. B. ^[4] ; Cardoso-Lopes, Elaine M. ^[2] ; Vivanco, Jorge M. ^[5] ; Stermitz, Frank R. ^[3] ; Braga, Marcia R. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Biol, BR-13083863 Campinas, SP - Brazil

^[2] Inst Bot, Secao Fisiol & Bioquim Plantas, BR-01051970 Sao Paulo - Brazil

^[3] Colorado State Univ, Dept Chem, Ft Collins, CO 80523 - USA

^[4] Univ Metodista Sao Paulo, Sao Bernardo Do Campo, SP - Brazil

^[5] Colorado State Univ, Ctr Rhizosphere Biol, Ft Collins, CO 80523 - USA

• Tipo de documento: Artigo Científico
• Fonte: PHYTOCHEMISTRY LETTERS; v. 2, n. 2, p. 59-62, APR 29 2009.
• Citações Web of Science: 9

Resumo

A new biscoumarin (7-hydroxy-6,6'-dimethoxy-3,7'-dicoumarinyl ether), named hymenain (1) and the known biscoumarin ipomopsin (2) were isolated from the germinated seeds of Hymenaea courbaril var. stilbocarpa. Their structures were elucidated by spectroscopic methods. Scopoletin was also detected in the extracts by TLC and CC-MS analyses. Hymenain and ipomopsin showed direct scavenging effect on a stable free radical, 2,2-diphenyl-1-picryl-hydrazyl (DPPH) with the EC(50) values of 100 and 300 mu M, respectively. (C) 2008 Phytochemical Society of Europe. Published by Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 05/04139-7 - Carboidratos de plantas tropicais como moduladores de processos ecofisiológicos e indicadores de respostas a estresses ambientais
• Beneficiário: Marcia Regina Braga
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 04/04477-7 - Substâncias fitotóxicas e antimicrobianas em sementes de leguminosas que acumulam galactomanano e xiloglucano como carboidratos de reserva de parede celular
• Beneficiário: Kelly Simões
• Modalidade de apoio: Bolsas no Brasil - Doutorado