Species of the Quercus species is an evergreen broadleaf tree found not only in Korea but also in China, Taiwan, and Japan. Quercus species is the most commonly occurring plant among the 50 native species of the family Fagaceae in Korea, China, and Taiwan. Quercus species have been used for
The chromatographic separation of MeOH extract from the Quercus salicina Blume Stem led to the isolation of five phenolic compounds. Using spectroscopic methods, the structures of these compounds were determined as D-threo-guaiacylglycerol 8-O-beta-D-(6'-O-galloyl)glucopyranoside (1),
Phytochemical investigations of Quercus incana led to the isolation of a new catechin derivative quercuschin (1), along with six known compounds: quercetin (2), methyl gallate (3), gallic acid (4), betulinic acid (5), (Z)-9-octadecenoic acid methyl ester (6) and β-sitosterol glucoside (7) from the
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