(+)-Catechin-5-galloyl Ester as a Novel Natural Polyphenol from the Bark of Acacia nilotica of Sudanese Origin1.
From the bark of ACACIA NILOTICA subsp. TOMENTOSA a novel polyphenol, (+)-catechin-5-galloyl ester ( 5), was isolated along with gallic acid ( 1), its methyl ester ( 2), naringenin ( 3), and (+)-catechin ( 4). The structure of 5 was determined by use of mass spectrometry as well as (1)H- and (13)C-NMR spectroscopy.
Khalid
S A
SA
Department of Pharmacognosy, Faculty of Pharmacy, University of Khartoum, P. O. Box 1996, Khartoum, Sudan.
Yagi
S M
SM
Khristova
P
P
Duddeck
H
H