The present invention relates to an ameliorant for improving the movement of the digestive tract comprising, as an active ingredient, 4-amino-5-chloro-2-methoxy-N-[(2S,4S)-2-hydroxymethyl-4-pirrolidinyl]benzamide or an acid addition salt thereof which is a metabolite of 4-amino-5-chloro-2-methoxy-N-[(2S,4S)-1-ethyl-2-hydroxymethyl-4-pyrrolidinyl]benzamide or an acid addition salt thereof, having high biding affinity for a serotonin receptor 4 (5HT
4
) and causing no arteritis and thrombus formation; a medicinal composition for improving the movement of the digestive tract comprising the said ameliorant and a pharmaceutically acceptable carrier; and a treating method for promoting the movement of the digestive tract, which comprises using the said medicinal composition for improving the movement of the digestive tract.
本发明涉及一种改善消化道运动的改良剂,包括作为活性成分的4-
氨基-5-
氯-2-甲氧基-N-[(2S,4S)-2-羟甲基-4-
吡咯烷基]苯甲酰胺或其酸加成盐,该化合物是4-
氨基-5-
氯-2-甲氧基-N-[(2S,4S)-1-乙基-2-羟甲基-4-
吡咯烷基]苯甲酰胺或其酸加成盐的代谢物,具有高亲和力结合5-羟
色胺受体4(5HT4),不引起动脉炎和血栓形成;一种用于改善消化道运动的药物组合物,包括上述改良剂和药学上可接受的载体;以及一种促进消化道运动的治疗方法,该方法包括使用上述用于改善消化道运动的药物组合物。