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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: <>. 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.
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.
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