甲烷磺酸 、
7-[3-(t-butoxycarbonylamino-methyl)-4-methoxyimino-3-methyl-pyrrolidin-1-yl]-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid 在
三氟乙酸 作用下,
以
异丙醇 为溶剂,
反应 3.5h,
以51%的产率得到(R)-7-(3-aminomethyl-4-methoxyimino-3-methyl-pyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid methanesulfonate