7-methoxy-2-(thiophen-2-yl)-1H-benzo[d]imidazole-4-carboxylic acid 、
2-氨基-3-羟基丙酸甲酯 以to afford the desired product (20 mg, 10% yield) as a light yellow solid的产率得到methyl 3-hydroxy-2-[7-hydroxy-2-(thiophen-2-yl)-1H-benzo[d]imidazole-4-carboxamido]propanoate