| 摘要 |
PURPOSE:To obtain a new compound having excellent anti-acid action and useful as food and drink, a cosmetic and a medicine. CONSTITUTION:A compound of the formula, e.g. quercetin 4'-O-beta-D- glucopyranoside-6''-gallate. This compound of formula has the following physicochemical properties: Appearance, yellow powder; molecular formula, C28H24O16; high speed atomic impact mass spectrum m/z 615 (M-H)<->; ultraviolet ray spectrum (MeOH) lambdamax [nm(logepsilon)]: 203 (4.75), 254 (4.35), 269 (4.36), 366 (4.26), etc. This compound of formula is obtained by e.g. extracting a plant such as a tree belonging to the Eucalyptus with water or an organic solvent such as an alcohol or acetone. |
