The present invention provides a novel organic acid glycoside existing in coffee beans and a use thereof. Formula 1 wherein, each of R 1 to R 7 is independently selected from a 1group consisting of H, OH, NH 2 , OCH 3 , OC(O)CH 3 , and NHCOCH 3 A is selected from C 1 to C 6 alkyl or C 1 to C 6 alkenyl, and the C 1 to C 6 alkyl or C 1 to C 6 alkenyl may be substituted by methyl or ethyl.