Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||Sesquiterpene lactones from the leaves of Hedyosmum brasiliense (Chloranthaceae)|
de Oliveira, FL
da Cruz, ACH
de Souza, NM
|Abstract:||Hedyosmum brasiliense Miq. is an endemic aromatic arborescent shrub that is the only representative of the Chloranthaceae in Brazil. There have been few studies seeking to determine its chemical constituents and/or pharmacological effects. This work describes the isolation and identification of sesquiterpene lactones from the leaves, including guaianolides, elemanolides and a lindenanolide. These were tested against Mycobacterium tuberculosis, together with podoandin, onoseriolide and some other common phenolics. The structures of the isolated compounds were determined based on extensive analysis of 1D and 2D NMR spectroscopic and MS data, as well as comparison with published data. The compounds found were the guaianolides, 1,2-epoxy-10 alpha-hydroxy-podoandin and 1-hydroxy-10,15-methylenepodoandin, the elemenolide 15-acetoxy-isogermafurenolide and the lindenanolide 8 alpha/beta,9 alpha-hydroxy-onoseriolide, along with the previously isolated guaianolide podoandin, the lindenanolide onoseriolide and the elemenolide 15-hydroxy-isogermafurenolide. The phenolic compounds isolated were scopoletin, vanillin, vanillic acid, protocatechuic aldehyde and ethyl caffeate. The isolated sesquiterpene lactones did not show anti-mycobacterial activity against isoniazid-sensitive M. tuberculosis cultures at concentrations of 1-30 mu M. (C) 2012 Elsevier Ltd. All rights reserved.|
|Editor:||Pergamon-elsevier Science Ltd|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.