(6,7-Substituted-8-alkoxy-1-cyclopropyl-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid-O3,O4)bis(acyloxy-O)borates and the salts thereof, and methods for their manufacture.

摘要

A novel compound of (6,7-substituted-8-alkoxy-1-cyclopropyl-1,4-dihydro-4-oxo-3-quinolinec arboxylic acid-O<3>,O<4>) bis (acyloxy-O) borate, the salt thereof and the hydrate thereof represented by a general formula (I) <CHEM> which is the important intermediate for preparing a novel quinolonecarboxylic acid of useful medicament.