反应详情

Substantially the same procedure as in Example 219 was repeated using a starting material, 7-methoxybenzofuran-2-carboxylic acid, and 3-phenylpropylamine to give N-(3-phenylpropyl)-7-methoxybenzofuran-2-carboxamide (Compound 239a). Successively, it was formylated to give N-(3-phenylpropyl)-4-formyl-7-methoxybenzofuran-2-carboxamide (Compound 239b), then compound 239b was reacted with cyclobutylamine to give compound 23.9 as a white solid.