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Type: Artigo de periódico
Title: Isolation and synthesis of a new clerodane from Echinodorus grandiflorus
Author: Costa, M
Tanaka, CMA
Imamura, PM
Marsaioli, AJ
Abstract: A new clerodane derivative, (-)-16-hydroxycleroda-3,13-dien-16,15-olide-18-oic acid, (4a alpha,6 alpha,8a alpha) 1-carboxy-5(S)-[2(2,5-dihydro-5-hydroxy-2-oxo-4-furanyl)ethyl-5,6,8a-trimethyl-3,4,4a,5,6,7,8,8a-octahydro-naphthalene was isolated as a minor component of the polar fractions of the leaves of E. grandiflorus. The structure was determined by spectroscopy (IR, MS, 1D and 2D H-1 and C-13 NMR). The absolute configuration was determined by a hemisynthesis using (+)-hardwickiic acid methyl ester, from commercial copaiba oil, as starting material. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
Subject: Echinodorus grandiflorus
absolute configuration
hemisynthesis of a clerodane
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/S0031-9422(98)00464-6
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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