Anti-inflammatory, antimicrobial and acetylcholinesterase inhibitory activities of friedelanes from Maytenus robusta branches and isolation of further triterpenoids.

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Autor(es): dc.creatorSousa, Grasiely Faria de-
Autor(es): dc.creatorAguilar, Mariana Guerra de-
Autor(es): dc.creatorDias, Danielle Ferreira-
Autor(es): dc.creatorTakahashi, Jacqueline Aparecida-
Autor(es): dc.creatorMoreira, Maria Eliza de Castro-
Autor(es): dc.creatorVieira Filho, Sidney Augusto-
Autor(es): dc.creatorSilva, Grácia Divina de Fátima-
Autor(es): dc.creatorRodrigues, Salomão Bento Vasconcelos-
Autor(es): dc.creatorMessias, Maria Cristina Teixeira Braga-
Autor(es): dc.creatorDuarte, Lucienir Pains-
Data de aceite: dc.date.accessioned2025-08-21T16:01:18Z-
Data de disponibilização: dc.date.available2025-08-21T16:01:18Z-
Data de envio: dc.date.issued2017-08-31-
Data de envio: dc.date.issued2017-08-31-
Data de envio: dc.date.issued2017-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/8636-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.phytol.2017.05.026-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1030177-
Descrição: dc.descriptionThe new pentacyclic triterpenoids friedel-1-en-3,16-dione (1), 1α,29-dihydroxyfriedelan-3-one (2) and 16β,28,29-trihydroxyfriedelan-3-one (3) were isolated from Maytenus robusta branches in addition to the known, but new for this species, triterpenoid 12α,29-dihydroxyfriedelan-3-one (4). The structures and stereochemistry of the novel triterpenoids were established by IR, 1D/2D NMR and HR-APCIMS spectral data. In addition, the biological activity of compound 2 and the previously isolated friedelanes 5–8 (friedelan-3,16-dione, 29-hydroxyfriedelan- 3-one, 29-hydroxyfriedelan-3,16-dione and 16β,29-dihydroxyfriedelan-3-one) was investigated. Compounds 2 and 8 were tested for their acetylcholinesterase properties and antimicrobial activity against the bacteria Staphylococcus aureus, Pseudomonas aeruginosa, Listeria monocytogenes, Citrobacter freundii, and the fungus Candida albicans. Compound 2 was the most active compound for both assays, with values of 32.3% acetylcholinesterase inhibition, 42% activity against the fungus Candida albicans and 34% against the bacterium Pseudomonas aeruginosa. Compounds 5–8 were assayed for their antiedematogenic activity using the carrageenan- induced paw edema assay. At maximum inflammation after three hours, compounds 6 and 8 showed 42% and 57% activity, respectively. After four hours, compounds 5 and 7 showed activity of 71% and 75% compared to 79% of the control indomethacin.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsO periódico Phytochemistry Letters concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 4178720474114.-
Título: dc.titleAnti-inflammatory, antimicrobial and acetylcholinesterase inhibitory activities of friedelanes from Maytenus robusta branches and isolation of further triterpenoids.-
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