To investigate the chemical constituents of Veronica linariifolia Pall. ex Link subsp. dilatata (Nakai et Kitagawa) Hong. METHODS: Extracted with 75% alcohol, isolated by column chromatography on silica Gel, and purified by recrystallization. RESULTS: Fourteen phenolic compounds were isolated from Veronica linariifolia. On the basis of the physical properties and spectral data, the structures were identified as 3', 4', 5, 6,7-pentahydroxyflavone-7-O-beta-D-glucosyl-(1 ''-> 2')-beta-D-glucoside(I),4% 5, 7-trihydroxy-3', 6-dimethoxyflavone-7-O-beta-D-glueoside (II), apigenin-7-O-beta-D-glucuronide methyl ester (III) apigenin-7-O-beta-D-glucuronide ethyl ester ( TV), apigenin-7-O-beta-D-glueuronide buthyl ester (V), apigenin(Vl), luteolin (VII) vanillic acid (VIII), p-hydroxybenzoic acid(IX), protocatechuic acid (X), protocatechuic acid ethyl ester isoerulic acid (XII), catechol ( XIII) and emodin (XIV). CONCLUSION: Except for apigenin and lutelin, the other twelve compounds were obtianed from this-plant for the first time, and compounds II - V, XI, XIII), XIV were obtianed from genus Veronica for the first time.
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