A-type proanthocyanidin antioxidant from Dioclea lasiophylla.
The A-type proanthocyanidin, epigallocatechin-(2beta-->7,4beta-->8)-epicatechin, together with the known epicatechin, luteolin 3'beta-D-glucopyranoside, chrysoeriol 7beta-D-glucopyranoside and 2-methylpentan-2,4-diol, were isolated from leaves of Dioclea lasiophilla. The structures were established on the basis of their spectral data. Antioxidant activities of isolates were measured using the autooxidation of beta-carotene in a linolenic acid suspension method.
Barreiros
A L
AL
Instituto de Química, Universidade Federal da Bahia, Salvador, Brazil.
David
J P
JP
de Queiroz
L P
LP
David
J M
JM
D000872:Anthocyanins / Q000737:chemistry / Q000302:isolation & purification*; D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification*; D007887:Fabaceae / Q000737:chemistry*; D015394:Molecular Structure; D010946:Plants, Medicinal; D044945:Proanthocyanidins; D013057:Spectrum Analysis
D000872:Anthocyanins; D000975:Antioxidants; D044945:Proanthocyanidins; C013221:proanthocyanidin