2-(5-bromothiophen-2-yl)-7-hydroxy-1H-benzo[d]imidazole-4-carboxylic acid 、
(S)-1-Boc-3-氨基哌啶 以to afford the desired product (48 mg, 35% yield) as yellow-brown solid的产率得到(S)-tert-butyl 3-(2-(5-bromothiophen-2-yl)-7-hydroxy-1H-benzo[d]imidazole-4-carboxamido)piperidine-1-carboxylate