PROBLEM TO BE SOLVED: To provide a method for simply producing (R)-(-)-5-[2-[2-(2-ethoxyphenoxy)ethylamino]-2-methylethyl]-2-methoxybenzenesulfonamide hydrochloride salt and an intermediate for the same at a reduced cost.
SOLUTION: This method for producing the optically active compound expressed by chemical formula (6) comprises subjecting a compound expressed by chemical formula (5) to optical resolution with an optical resolution agent which has an optically active saccharide derivative as an asymmetry identifying part.
COPYRIGHT: (C)2005,JPO&NCIPI