反应详情

The procedure described in Example 177 was repeated, except that (RS)-2-(4-chlorobenzenesulfonylamino)-4-methylthiobutanoic acid (1.03 g) and methyl 4-aminophenylpropionate hydrochloride (617.4 mg) were condensed in chloroform (30 ml) in the presence of triethylamine (1.76 ml) and 1-methyl-2-chloropyridinium iodide (975.2 mg) to obtain as a colorless oil (RS)-2-(4-chlorobenzenesulfonylamino)-N-(4-(2-methoxycarbonylethyl)phenyl)-4-methylthiobutanamide (177.1 mg).