反应详情

The procedure described in Example 179 was repeated, except that (RS)-2-(4-chlorobenzenesulfonylamino)-3-cyclohexylpropanoic acid (118.9 mg) and ethyl 4-aminophenylacetate hydrochloride (88.98 mg) were condensed in THF (3 ml) in the presence of triethylamine (135.67 mg) and pivaloyl chloride (66.33 mg), and then the resulting crude product was purified by column chromatography (silica gel 20 g, hexane/ethyl acetate=3/1) to obtain as a colorless oil (RS)-2-(4-chlorobenzenesulfonylamino)-3-cyclohexyl-N-(4-(ethoxycarbonylmethyl)phenyl)propanamide (66.2 mg).

1. customthe resulting crude product was purified by column chromatography (silica gel 20 g, hexane/ethyl acetate=3/1)