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