(rac)-3-[(2-chloro-5-nitro-pyrimidin-4-yl)-cyclopentyl-amino]-2-methyl-propanoic acid methyl ester 、
氢气 在
钯 氢气 、
二氯甲烷 作用下,
以
乙酸乙酯 为溶剂,
以gave 35.2 g of (rac)-3-[(5-amino-2-chloro-pyrimidin-4-yl)-cyclopentyl-amino]-2-methyl-propanoic acid methyl ester (V-1), which的产率得到(rac)-3-[(5-amino-2-chloro-pyrimidin-4-yl)-cyclopentyl-amino]-2-methyl-propanoic acid methyl ester