(S)-2-((tert-butoxycarbonyl)amino)-3-(4-(1,6-dimethyl-2-oxo-4-(trifluoromethyl)-1,2-dihydropyridin-3-yl)phenyl)propanoic acid methyl ester 、
盐酸 在
乙醚 作用下,
以
1,4-二氧六环 、
乙醚 为溶剂,
反应 4.0h,
以315 mg (92% yield) of 4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanine methyl ester hydrochloride salt was obtained as an amorphous white solid的产率得到4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanine methyl ester hydrochloride salt