[Object] To provide a medicine useful for treatment and prevention of hyperlipidemia, further for the treatment and prevention of cholestasis-accompanying hepatopathy, particularly primary biliary cirrhosis and primary sclerosing cholangitis, and for the treatment and prevention of obesity and fatty liver.
[Means] A benzothiazepine compound represented by the following formula (1), having a thioamide bond and a quaternary ammonium substituent.
A pharmaceutical useful as a therapeutic agent and a preventive agent for hyperlipemia, and a pharmaceutical useful as a therapeutic agent and a preventive agent for hepatic disorders associated with cholestasis, particularly, primary biliary cirrhosis and primary sclerosing cholangitis, and a pharmaceutical useful as a therapeutic agent and a preventive agent for obesity, fatty liver and steatohepatitis are provided. A benzothiazepine or benzothiepine compound represented by the following formula (1A) having a thioamide bond and a quaternary ammonium substitutent: