7-(2-azidomethyl-4-fluoro-benzyl)-4-benzoyloxy-1-methyl-2-oxo-1,2-dihydro-[1,5]naphthyridine-3-carboxylic acid ethyl ester 、
乙酸酐 在
palladium 10% on activated carbon
氢气 作用下,
以
1,4-二氧六环 为溶剂,
反应 1.5h,
以53%的产率得到7-[2-(acetylamino-methyl)-4-fluoro-benzyl]-4-benzoyloxy-1-methyl-2-oxo-1,2-dihydro-[1,5]naphthyridine-3-carboxylic acid ethyl ester