Preparing Gallic Acid and Protocatechuic Acid in One Step from Polygonum capitatum Buch-Ham ex D. Don by High-speed Counter-current Chromatography
FANG Wei, WAN Jin-Zhi, ZHANG Li-Yan, LIANG Bin, CHEN Xin-Xia
NATURAL PRODUCT RESEARCH AND DEVELOPMENT . 2011, (2): 299 -303 .