Antioxidative flavan-3-ol glycosides from stems of Rhizophora stylosa.
نویسندگان
چکیده
Two flavan-3-ol glycosides together with seven flavan-3-ols were isolated from stems of the mangrove plant, Rhizophora stylosa. Their structures were established as glabraoside A (7) and glabraoside B (8) by spectroscopic and chemical methods. The antioxidative activity of these isolated compounds evaluated by the diphenylpicrylhydrazyl (DPPH) radical scavenging reaction was higher than that of L-ascorbic acid.
منابع مشابه
Flavanol derivatives from Rhizophora stylosa and their DPPH radical scavenging activity.
A new acetylated flavanol, 3,7-O-diacetyl (-)-epicatechin (3), and seven known flavanol derivatives, (-)-epicatechin (1), 3-O-acetyl (-)-epicatechin (2), 3,3',4',5,7-O-pentaacetyl (-)-epicatechin (4), (+)-afzelechin (5), (+)-catechin (6), cinchonain Ib (7), and proanthocyanidin B2 (8), were isolated from the stems and twigs of the mangrove plant Rhizophora stylosa and identified. The crude extr...
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ورودعنوان ژورنال:
- Bioscience, biotechnology, and biochemistry
دوره 72 8 شماره
صفحات -
تاریخ انتشار 2008