Methyl 4-[2-(1-tert-butoxy-carbonylpiperidin-4-yloxy)-4-(dimethylamino)benzoylamino]-thiophene-3-carboxylate 、 2-[1-(tert-butoxycarbonyl)piperidin-4-yloxy]-4-(N,N-dimethylamino)-benzoic acid 、
4-氨基噻吩-3-羧酸甲酯 生成
methyl 4-[2-(1-tert-butoxycarbonylpiperidin-4-yloxy)-4-(dimethylamino)benzoylamino]thiophene-3-carboxylate