Two Dibenzylbutyrolactol Derivatives and Other Chemical Constituents from Aristolochia peltato-deltoidea

The hexane extract from the aerial parts of Aristolochia peltato-deltoidea Hoehne (Aristolochiaceae) afforded two new epimeric lignans of the type dibenzylbutyrolactol, rel-(8R, 8’S, 9S)-3,4-dimethoxy-3’,4’-methylenedioxy-9beta-ethoxy- and rel-(8R, 8’S, 9R)-3,4-dimethoxy-3’,4’-methylenedioxy-9alpha-ethoxy-lignans-8.8’,9.O.9’, besides a benzofuran neolignan, known as eupomatenoid-7, alpha-tocopherylquinone, beta-sitosterol and stigmasterol. From the chloroform extract were isolated two diastereomeric dibenzylbutyrolactone lignans: rel-(8R, 8’R)- and rel-(8R, 8’S)-3,4-dimethoxy-3’,4’-methylenedioxy-9-oxo-lignans-8.8’,9.O.9’. Chemical composition analysis by GC/MS of the non polar fractions from the hexane extract was also carried out and ten components were identified. The structures of the isolated compounds were elucidated utilizing spectrometric methods.

Bibliographic Details

Main Authors:	Silva,Ana Paula Freitas da, Palmeira Júnior,Sebastião Ferreira, Conserva,Lucia Maria, Guilhon,Giselle Maria S. Pinheiro
Format:	Digital revista
Language:	English
Published:	Sociedade Brasileira de Química 1999
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000200009
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