Antioxidative phenylpropanoid-substituted epicatechin glycosides from Parabarium huaitingii.
Three new phenylpropanoid-substituted epicatechin glycosides, namely parabarosides A - C ( 1- 3), together with three known compounds, 5-caffeoylquinic acid (4), 5-caffeoylshikimic acid (5), and 3,4-dicaffeoylquinic acid (6), were obtained from the plant Parabarium huaitingii. Their structures were determined and full assignments of (1)H- and (13)C-NMR spectroscopic data were achieved by analyses of 1D- and 2D-NMR, mass, and CD spectra. The oxygen radical absorbance capacity (ORAC) assay was applied to evaluate their antioxidative capacity in vitro, which revealed that 1- 6 showed strong antioxidative properties.
Tang
Jin-shan
JS
Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou 510632, PR China.
Gao
Hao
H
Wang
Chuan-xi
CX
Dai
Yi
Y
Bao
Li
L
Ye
Wen-cai
WC
Yao
Xin-sheng
XS
D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D029062:Apocynaceae / Q000737:chemistry*; D002392:Catechin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry* / Q000494:pharmacology; D018547:Plant Stems; D020005:Propanols / Q000302:isolation & purification / Q000494:pharmacology
D000975:Antioxidants; D010936:Plant Extracts; D020005:Propanols; C548758:parabaroside A; C548760:parabaroside B; C548761:parabaroside C; C439395:1-phenylpropanol; D002392:Catechin