Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/25138
Type: Artigo de periódico
Title: A New ent-Clerodane Diterpene from Hymenaea courbaril var. altissima
Author: Nogueira, Raquel T.
Giacomini, Rosana A.
Shepherd, George J.
Imamura, Paulo M.
Abstract: A new ent-clerodane and two known ent-labdanes were isolated from the barks of Hymenaea courbaril var. altissima (Ducke). The new diterpene was identified, after esterification with diazomethane, as methyl (-)-(5R,8S,9S,10R)-clerod-3-en-15-oate and known diterpenes were identified as methyl (-)-copalate and methyl (-)-eperuate. From the EtOAc extract of seed pods a known methyl (-)-zanzibarate was isolated. The structures of isolated compounds were elucidated based on spectroscopic studies.
Da casca do tronco de Hymenaea courbaril var. altissima (Ducke) foi isolado um novo ent-clerodano na forma de éster metílico, após esterificação com diazometano, o (-)-(5R,8S,9S,10R)-clerod-3-en-15-oato de metila. Foram isolados também dois ent-labdanos conhecidos: o (-)-copalato de metila e (-)-eperuato de metila. Do extrato AcOEt do epicarpo foi isolado, após esterificação com diazometano, o (-)-zanzibarato de metila. As estruturas dos compostos foram elucidadas com base na análise de dados espectroscópicos.
Subject: Hymenaea courbaril var. altissima
ent-clerodane
ent-labdane
Editor: Sociedade Brasileira de Química
Rights: aberto
Identifier DOI: 10.1590/S0103-50532002000300015
Address: http://dx.doi.org/10.1590/S0103-50532002000300015
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000300015
Date Issue: 1-Jun-2002
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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