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metadata.dc.type: | Artigo de Periódico |
Title: | A sesquiterpene dimer from Xylopia aromatica |
Other Titles: | Phytochemistry |
Authors: | Martins, Dirceu Osshiro, Eliane Roque, Nídia Franca Marks, Vered Gottlieb, Hugo E. |
metadata.dc.creator: | Martins, Dirceu Osshiro, Eliane Roque, Nídia Franca Marks, Vered Gottlieb, Hugo E. |
Abstract: | A new guaiane dimer has been isolated from the leaves of Xylopia aromatica. The natural product, whose IUPAC name is [11α,12β,13α,21β]-7-hydroxy-16-oxo-17-isopropylidene-1α,5,5,9β,14α,20-hexamethyl-6- oxaheptacyclo[10.9.1.02,10.04,7.012,21.013,19]docosa-2(10),3,19-triene, seems to have been formed by cycloaddition of two cyclopentadiene precursors, and contains an unusual hemiacetal oxetane ring. The structure was elucidated mainly by 1D and 2D NMR techniques; NOESY spectra were instrumental in the determination of stereochemistry. |
Keywords: | Xylopiu uromutica; Annonaceae sesquiterpene dimer |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/8253 |
Issue Date: | 1998 |
Appears in Collections: | Artigo Publicado em Periódico (Química) |
Files in This Item:
File | Description | Size | Format | |
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Martins.pdf Restricted Access | 334,03 kB | Adobe PDF | View/Open Request a copy |
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