(R)-(3-bromo-2-methyl-propyl)-carbamic acid tert-butyl ester 、
8-fluoro-3-methyl-2-(tetrahydro-pyran-2-yl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-4-one 在
caesium carbonate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 18.17h,
以59%的产率得到(R)-{3-[8-fluoro-3-methyl-4-oxo-2-(tetrahydro-pyran-2-yl)-2,4-dihydro-pyrazolo[4,3-c]quinolin-5-yl]-2-methyl-propyl}-carbamic acid tert-butyl ester