The invention relates to a novel method for preparing 2-(4-chlorobenzoylamino)-3-[2(1H)-quinolinon-4-yl]propionic acid, also known as Rebamipide represented by the formula I and useful for treatment of peptic ulcer from alkyl 2-(4-chlorobenzoylamino)-2-alkoxycarbonyl-3-[2(1H)-quinolinon-4-yl]propionate represented by the formula II in the presence of a base solution for hydrolysis and decarboxylation to remove a carboxyl group.
本发明涉及一种新型制备2-(4-
氯苯甲酰
氨基)-3-[2(1H)-
喹啉酮-4-基]
丙酸,也称为Rebamipide,其
化学式为I,用于治疗消化性溃疡。该方法包括在碱性溶液中,将烷基2-(4-
氯苯甲酰
氨基)-2-烷氧羰基-3-[2(1H)-
喹啉酮-4-基]
丙酸酯(
化学式II)进行
水解和脱羧,去除羧基。