Ent-kaurane diterpenoids and other constituents from the stem of Xylopia laevigata (Annonaceae)

AUTOR(ES)

Silva, Dayanne Meneses, Costa, Emmanoel Vilaça, Nogueira, Paulo Cesar de Lima, Moraes, Valéria Regina de Souza, Cavalcanti, Sócrates Cabral de Holanda, Salvador, Marcos José, Ribeiro, Luis Henrique Gonzaga, Gadelha, Fernanda Ramos, Barison, Andersson, Ferreira, Antonio Gilberto

FONTE

Quím. Nova

DATA DE PUBLICAÇÃO

2012

RESUMO

Phytochemical investigation of the hexane extract from the stem of Xylopia laevigata led to the isolation of the ent-kaurane diterpenoids, ent-kaur-16-en-19-oic acid, 4-epi-kaurenic acid, ent-16β-hydroxy-17-acetoxy-kauran-19-al, ent-3β-hydroxy-kaur-16-en-19-oic acid, and ent-16β,17-dihydroxy-kauran-19-oic acid, as well as spathulenol and a mixture of β-sitosterol, stigmasterol and campesterol. The identification of the compounds was performed on the basis of spectrometric methods including GC-MS, IR, and 1D and 2D NMR. Potent larvicidal activity against Aedes aegypti larvae with LC50 of 62.7 µg mL-1 was found for ent-3β-hydroxy-kaur-16-en-19-oic acid. This compound also showed significant antifungal activity against Candida glabrata and Candida dubliniensis with MIC values of 62.5 µg mL-1.

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