4-(1-cyclopropylamino-2-hydroxyethyl)7-hydroxyindole-2-carboxylic acid ethyl ester hydrochloride 、
4-[N-benzyl-N-(2-acetoxymethoxycarbonyl-1-methylethyl)aminoacetyl]-7-benzyloxyindole-2-carboxylic acid acetoxymethyl ester acetate 生成 4-[1-hydroxy-2-(2-acetoxymethoxycarbonyl-1-methylethylamino)ethyl]-7-hydroxyindole-2-carboxylic acid acetoxymethyl ester acetate