t-butyl [(S)-1-((R)-5-methyl-2-oxo-piperidin-1-ylmethyl)-3-oxo-3-(2-phenyl-4-trifluoromethyl-5,8-dihydropyrido[3,4-d]pyrimidin-7(6H)-yl)-propyl]-carbamate 在
盐酸 作用下,
以
1,4-二氧六环 为溶剂,
反应 0.5h,
以84%的产率得到(R)-1-{(S)-2-amino-4-oxo-4-[2-phenyl-4-(trifluoromethyl)-5,8-dihydropyrido[3,4-d]pyrimidin-7(6H)-yl]butyl}-5-methylpiperidin-2-one