Ipomopsin and hymenain, two biscoumarins from seeds of Hymenaea courbaril

Author(s)

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]

Affiliation

^[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

• Document type: Journal article
• Source: PHYTOCHEMISTRY LETTERS; v. 2, n. 2, p. 59-62, APR 29 2009.
• Web of Science Citations: 9

Abstract

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)

• FAPESP's process: 05/04139-7 - Carbohydrates of tropical species as modulators of ecophysiological processes and as environmental stress response markers
• Grantee: Marcia Regina Braga
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 04/04477-7 - Phytotoxic and antimicrobial substances in Leguminosae seeds which accumulate galactomannan and xyloglucan as cell wall reserve carbohydrates
• Grantee: Kelly Simões
• Support Opportunities: Scholarships in Brazil - Doctorate