(3-[(5-chloro-thiophene-2-carbonyl)-amino]-piperidin-1-yl)-acetic acid 、
1-(1-甲基哌啶-4-基)哌嗪 以to give 5-chloro-thiophene-2-carboxylic acid (1-{2-[4-(1-methyl-piperidin-4-yl)-piperazin-1-yl]-2-oxo-ethyl}-piperidin-3-yl)-amide的产率得到5-chloro-thiophene-2-carboxylic acid (1-(2-[4-(1-methyl-piperidin-4-yl)-piperazin-1-yl]-2-oxo-ethyl)-piperidin-3-yl)amide