作者:F. Javier Villasante、Lourdes Gude、Sara P. Fernández、Olga Alonso、Elena García、Antonio Cosme
DOI:10.1021/op800042a
日期:2008.9.19
An improved process to obtain gatifloxacin (1) through use of boron chelate intermediates has been developed. The methodology involves an initial activation step which accelerates the formation of the first chelate under low-temperature conditions and prevents demethylation of the starting material. To increase the overall yield and to avoid the isolation and manipulation of the resulting intermediates, the process has been designed to be carried out in one pot. As a result, we present here an easy, scaleable and substantially impurity-free process to obtain gatifloxacin (1) in high yield.