7-(2,5-diazabicyclo[2.2.2]oct-2-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid 、
2-溴乙醇 、
三乙胺 在
乙醇 、 1-Ethyl-6-fluoro-7-(5-methyl-2,5-diazabicyclo[2.2.2]oct-2-yl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid hydrochloride 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 18.0h,
以to give 0.61 g of the title product, mp 290° C. dec (a)的产率得到1-Cyclopropyl-6-fluoro-1,4-dihydro-7-[5-(2-hydroxyethyl)-2,5-diazabicyclo(2.2.2)oct-2-yl]-4-oxo-1,8-naphthyridine-3-carboxylic acid, monohydrobromide