Chemical constituents from Vellozia graminifolia (Velloziaceae)

Anais da Academia Brasileira de Ciências

Alexsandro Branco²  Angelo C. Pinto²  Raimundo Braz Filho¹ 

[1] ,Universidade Federal do Rio de Janeiro Instituto de Química Departamento de Química OrgânicaRio de Janeiro RJ ,Brasil

关键词: Vellozia graminifolia;    Velloziaceae;    triterpenes;    diterpene;    flavonoids;    Vellozia graminifolia;    Velloziaceae;    triterpenos;    diterpeno;    flavonóides;   

DOI  :  10.1590/S0001-37652004000300005

来源: SciELO

【 摘 要 】

From the hexane and ethyl acetate extracts obtained from stems, roots and leaf sheaths of Vellozia graminifolia, a mixture of linear hydrocarbons, a mixture of pentacyclic triterpenes, five monoisoprenylated flavonoids and one labdane diterpene, (-)-ent-3beta-hydroxy-8(17)-labden-15-oic acid, were isolated. The linear hydrocarbons and minor triterpenes were identified in their corresponding mixtures by High Resolution Gas Chromatography (HRGC) and HRGC coupled to mass spectrometry. The major pentacyclic triterpenes and the diterpene were characterized by spectral data, including 2D NMR experiments, and chemical transformations.

【 授权许可】

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