1-tert-Butyl-6-fluoro-7-[(1R,4R)-4-methyl-5-(2,2,2-trifluoro-acetyl)-2,5-diaza-bicyclo[2.2.1]hept-2-yl]-4-oxo-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid ethyl ester 在
palladium on activated charcoal
盐酸 、
氢气 作用下,
以
甲醇 为溶剂,
以53.6%的产率得到1-tert-Butyl-6-fluoro-7-((1R,4R)-4-methyl-2,5-diaza-bicyclo[2.2.1]hept-2-yl)-4-oxo-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid ethyl ester; hydrochloride