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http://www.repositorio.ufop.br/jspui/handle/123456789/8638
Title: | Selective oxidation of lupeol by iodosylbenzene catalyzed by manganese porphyrins. |
Authors: | Martins, Dayse Carvalho da Silva Silva, Fernando César Meireles, Alexandre Moreira Soares, Érico Augusto Rodrigues Silva, Grácia Divina de Fátima Vieira Filho, Sidney Augusto Duarte, Lucienir Pains Rebouças, Júlio Santos Idemori, Ynara Marina |
Keywords: | Triterpene Homogeneous catalyst |
Issue Date: | 2016 |
Citation: | MARTINS, D. C. da S. et al. Selective oxidation of lupeol by iodosylbenzene catalyzed by manganese porphyrins. Catalysis Communications, v. 86, p. 104-107, 2016. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1566736716302722>. Acesso em: 29 ago. 2017. |
Abstract: | Manganese porphyrin-catalyzed oxidation of lupeol by iodosylbenzenewas achieved undermild conditionswith low isolated yields but with remarkable selectivity, depending on the catalyst of choice. Mn(III) mesotetraphenylporphyrin and Mn(III) meso-tetrakis(4-carbomethoxyphenyl)porphyrin provided an entry for the preparation of 3β,30-dihydroxylup-20(29)-ene (6–14% yields), whereas Mn(III) β-octabromo-meso-tetrakis(4- carbomethoxyphenyl)porphyrin led to 20-oxo-3β-hydroxy-29-norlupeol (6% yield), as single products. Unreacted lupeol was recovered in quantitative yield. The oxidative transformations at lupeol C20 or C30 take place with no need for protection of C3 hydroxyl moiety. |
URI: | http://www.repositorio.ufop.br/handle/123456789/8638 |
metadata.dc.identifier.doi: | https://doi.org/10.1016/j.catcom.2016.08.014 |
ISSN: | 1566-7367 |
metadata.dc.rights.license: | O periódico Catalysis Communications concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 4178720534825. |
Appears in Collections: | DEFAR - Artigos publicados em periódicos |
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File | Description | Size | Format | |
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ARTIGO_SelectiveOxidationLupeol.pdf | 380,18 kB | Adobe PDF | View/Open |
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