It comprises a process for the preparation of levofloxacin based on a cyclisation reaction of a compound of formula (IV), which has the alcohol group protected, followed by a deprotection reaction and the conversion of the compound obtained to levofloxacin by a process comprising a hydrolysis reaction and a second cyclisation reaction. It also comprises new intermediates compounds.
该过程包括基于化合物的环化反应制备
左氧氟沙星的过程,该化合物的分子式为(IV),其中醇基被保护,随后进行去保护反应并将得到的化合物转化为
左氧氟沙星的过程,包括
水解反应和第二次环化反应。还包括新的中间体化合物。