A new ent-kaurane diterpene from stems of Alibertia macrophylla K. Schum. (Rubiaceae)
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Data
2007-10-11
Autores
Da Silva, Viviane Cândida [UNESP]
Faria, Andréia de Oliveira [UNESP]
Bolzani, Vanderlan da Silva [UNESP]
Lopes, Márcia Nasser [UNESP]
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Resumo
Phytochemical investigations of the stems of a specimen of Alibertia macrophylla led to the isolation and characterization of the new diterpene ent-kaurane-2β,3α,16α-triol (1), along with triterpenes 2-8, iridoids 9-12, and phenolic acids 13-15. The structure of 1 was established based on spectroscopic studies (1H- and 13C-NMR, IR, and HR-ESI-MS). This is the first report of the isolation of a diterpene from the Alibertia genus in Rubiaceae. © 2007 Verlag Helvetica Chimica Acta AG.
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Palavras-chave
Alibertia macrophylla, Kaurane diterpene, Phytochemical investigations, Nuclear magnetic resonance spectroscopy, Phenols, Plants (botany), Spectroscopic analysis, Olefins, 6beta hydroxygeniposide, alpha amirenone, beta amirenone, caffeic acid, ent kaurane 2beta,3alpha,16alpha triol, ent kaurane diterpene, gardenoside, germanicone, iridoid, kaurane derivative, lupenone, lupeol, oleanolic acid, phenol, plant extract, protocatechuic acid, shanziside methyl ester, sitosterol, steroid, stigmasterol, triterpene derivative, unclassified drug, ursolic acid, vanillic acid, drug isolation, drug structure, electrospray mass spectrometry, infrared spectroscopy, nuclear magnetic resonance spectroscopy, plant stem, priority journal, Rubiaceae
Como citar
Helvetica Chimica Acta, v. 90, n. 9, p. 1781-1785, 2007.