Chemical constituents of Piptadenia gonoacantha (Mart.) J.F. Macbr (pau jacaré)

The phytochemical investigation of Piptadenia gonoacantha (Mart.) J.F. Macbr. (Leguminosae-Mimosoideae), commonly known as "pau jacaré" (alligator stick), afforded sitosterol, campesterol, stigmasterol, the N-benzoylphenylalanine-2-benzoylamide-3-phenylpropyl ester, known as asperphenamate, sitosterol-3-O-β-D-glucopyranoside, besides three flavonoids, apigenin, 5-O-methylapigenin and 7,4'-dihydroxy-3',5-dimethoxyflavone from its branches. From its leaves, the methyl gallate and two flavonoids, vitexin and isovitexin, were isolated. From its bark, a mixture of sitosterol, campesterol, and stigmasterol, besides a mixture of cycloartenone, cycloartan-25-en-3-one, and 24-methylene-cycloartenone, and the pure triterpenes 24-methylenecycloartanol, friedelin, lupeol and lupenone, were isolated. Their structures were established on the basis of spectral analysis, comparison with literature data and GC-MS analysis of the mixtures. The ester, flavonoids and the cycloartanes are been identified for first time in the genus Piptadenia.

Bibliographic Details

Main Authors:	Carvalho,Mário G. de, Cardozo,Maritza A.R., Catunda Junior,Francisco E.A., Carvalho,Acácio G. de
Format:	Digital revista
Language:	English
Published:	Academia Brasileira de Ciências 2010
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000300003
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