a Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador (BA), Brazil
b Faculdade de Farmácia, Universidade Federal da Bahia, 40170-290, Salvador (BA), Brazil
c Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, 44031-460, Feira de Santana (BA), Brazil
Received 22 December 1999; revised 5 July 2000. Available online 6 December 2000.
Abstract
The A-type proanthocyanidin, epigallocatechin-(2β→7,4β→8)-epicatechin, together with the known epicatechin, luteolin 3′β- -glucopyranoside, chrysoeriol 7β- -glucopyranoside and 2-methylpentan-2,4-diol, were isolated from leaves of Dioclea lasiophylla. The structures were established on the basis of their spectral data. Antioxidant activities of isolates were measured using the auto-oxidation of β-carotene in a linolenic acid suspension method.
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