The present invention provides levodopa prodrugs, side effect that more, frequent drug administration which overcome administration number of times is shown etc., by levodopa dynamic in blood the problems caused by. (2S) -2- amino -3-(3,4- bis- ((2-(benzoyloxys) -2- methylpropionyls) oxygroup) phenyl) propionic acid, its salt or its molten medium mixture be levodopa prodrug it is administered orally and realizes the steady passage of levodopa in blood therefore, the prophylactic and/or therapeutic agent as Parkinsons disease and/or parkinsonism the problem of overcoming Dopar are useful.本發明提供左旋多巴前藥,其克服了給藥次數多、頻繁給藥所表現出的副作用等、由左旋多巴在血液中的動態所引起的問題。(2S)-2-氨基-3-(3,4-二((2-(苯甲酰氧基)-2-甲基丙酰基)氧基)苯基)丙酸、其鹽或其溶媒合物爲左旋多巴的前藥,通過口服給藥實現左旋多巴在血液中的平穩推移,因此,作爲克服了左旋多巴製劑的問題的帕金森病和/或帕金森綜合症的預防劑和/或治療劑有用。
