The present invention provides a selective M4 receptor antagonist, levorotatory demethylated phencynonate or its nontoxic pharmaceutically acceptable salt, a pharmaceutical composition comprising this compound, and a use thereof in the manufacture of a medicament for the treatment of motion dysfunction, such as, tremor, rigor and the like caused by Parkinson's disease (PD). The structure of the compound is shown in Formula IIa:
本发明提供了一种选择性
M4受体拮抗剂,即左旋去甲基苯
环酸或其无毒的药学上可接受的盐,以及包含该化合物的制药组合物,以及其在制造治疗运动障碍(如帕
金森病(PD)引起的震颤,僵硬等)的药物中的用途。该化合物的结构如IIa式所示: