NOVEL BENZOTHIAZOLE AND BENZISOTHIAZOLE DERIVATIVES HAVING 5-HT6 RECEPTOR INHIBITORY ACTIVITY, PREPARATION METHOD THEREOF, AND PHARMACEUTICAL COMPOSITION CONTAINING SAME

The present invention provides a compound of chemical formula I as novel benzothiazole and benzisothiazole derivatives having a 5-HT₆ receptor inhibitory activity or pharmaceutically acceptable salts, a preparation method thereof, and a pharmaceutical composition containing the same.