N-((1R,2R)-2-((S)-1-(4-Cyanophenyl)piperidin-3-ylamino)cyclohexyl)-2-(1-methyl-1H-indol-3-yl)acetamide 、
4-methoxybenzyloxycarbonyl chloride 以to give 28 mg (44%) of light brown solid的产率得到4-Methoxybenzyl (1R,2R)-2-((S)-1-(4-cyanophenyl)piperidin-3-ylamino)cyclohexylcarbamate