N-(benzoyl)-3-(R)-methyl-N'-[(7-methoxycarbonyl-indol-3-yl)-oxoacetyl]-piperazine 以
三乙基硅烷 、
三氟乙酸 为溶剂,
反应 10.0h,
以to give 1-benzoyl-3-(R)-methyl-4-[(7-carboxyindolin-3-yl)-2-oxoacetyl]piperazine (5.5 mg)的产率得到3-[2-[(2R)-4-benzoyl-2-methyl-piperazin-1-yl]-2-oxo-acetyl]indoline-7-carboxylic acid