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metadata.dc.type: | Artigo de Periódico |
Title: | 7β-Oxygenated limonoids from Trichilia elegans ssp. elegans |
Other Titles: | Phytochemistry |
Authors: | Roque, Nídia Franca Garcez, Fernanda R. Garcez, Walmir S. Castellano, Eduardo Ernesto Zukerman Schpector, Julio |
metadata.dc.creator: | Roque, Nídia Franca Garcez, Fernanda R. Garcez, Walmir S. Castellano, Eduardo Ernesto Zukerman Schpector, Julio |
Abstract: | Five 7β- and 7α-oxygenated obacunone-type limonoids were obtained on reinvestigation of the seeds of Trichilia elegans ssp. elegans: 7-deoxo-7β-acetoxykihadanins A and B, 7-deoxo-7β-hydroxykihadanins A and B and 7-deoxo-7α-hydroxykihadanin A, the last three being isolated after acetylation procedures as their mono- and/or diacetate derivatives. This is the first report of the natural occurrence of C-7 β-substituted limonoids without any oxygenated function at C-6. The structures of these compounds have been established on the basis of 1D- and 2D-NMR spectral techniques, ESI-mass spectrum and X-ray crystallographic data. |
Keywords: | Trichilia elegans ssp. elegans Meliaceae Limonoids 7-Deoxo-7β-acetoxykihadanin A 7-Deoxo-7β-acetoxykihadanin B 7-Deoxo-7β-hydroxykihadanin A 7-Deoxo-7β-hydroxykihadanin B 7-Deoxo-7α-hydroxykihadanin A X-ray analysis |
Publisher: | Elsevier |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/7254 |
Issue Date: | Dec-2000 |
Appears in Collections: | Artigo Publicado em Periódico (Química) |
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