2 CHALCONE-PRENYLCOUMARIN DIELS-ALDER ADDUCTS FROM BROSIMUM-RUBESCENS

Authors
SHIROTA O SEKITA S HIRAYAMA Y HAKAMATA Y HAYASHI T YANAGAWA T SATAKE M
Citation
O. Shirota et al., 2 CHALCONE-PRENYLCOUMARIN DIELS-ALDER ADDUCTS FROM BROSIMUM-RUBESCENS, Phytochemistry, 47(7), 1998, pp. 1381-1385
Citations number
5
Categorie Soggetti
Biology,"Plant Sciences
Journal title
Phytochemistry → ACNP
ISSN journal
00319422
Volume
47
Issue
7
Year of publication
1998
Pages
1381 - 1385
Database
ISI
SICI code
0031-9422(1998)47:7<1381:2CDAFB>2.0.ZU;2-U
Abstract
Two new Diels-Alder type adducts, named palodesagretins I and II, were isolated from a Peruvian folk medicine ''palo de sangre'' (Brosimum r ubescens). The structure of these new isolates indicated them to be ad ducts consisting of chalcone derivatives and a prenylcoumarin produced a Diels-Alder-type addition reaction, with a five-membered ring-closu re. Structural elucidation is based mainly on 2D-NMR analyses. (C) 199 8 Published by Elsevier Science Ltd. All rights reserved.