Ngounou FN, Choudhary MI, Malik S, Makhmoor T, Nur-E-Alam M, Zareen S, Lontsi D, Ayafor JF, Sondengam BL. New antioxidant and antimicrobial ellagic acid derivatives from Pteleopsis hylodendron.
Planta Med 2001;
67:335-339. [PMID:
11458450 DOI:
10.1055/s-2001-14306]
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Abstract
Bioassay-guided isolation of two new compounds, 3,4-methylenedioxy-3'-O-methyl-4'-O-glucoside ellagic acid (1) and the pteleoellagic acid derivative (2), from the stem bark of Pteleopsis hylodendron is reported along with 3,4-methylenedioxy-3'-O-methyl ellagic acid (3), 3,3'-di-O-methyl ellagic acid (4) and 3,3',4'-tri-O-methyl ellagic acid (5), which were obtained for the first time from this plant. The structures of these compounds were elucidated with the help of spectroscopic studies. Compounds 1 and 4 were found to have significant antioxidant activity, while compounds 1-4 showed antibacterial activity against different pathogenic bacteria.
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