166973-67-7Relevant academic research and scientific papers
A Sitafloxacine intermediate, Sitafloxacine preparation method and Sitafloxacine pharmaceutical composition
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Paragraph 0051-0052, (2017/01/19)
The invention discloses a sitafloxacin intermediate, a preparation method of sitafloxacin and a sitafloxacin pharmaceutical composition. The preparation method can be used for solving the problems of low yield, troublesome aftertreatment, poor safety and higher cost in the existing sitafloxacin preparation. The preparation method disclosed by the invention is simple in process, easily available in raw materials, lower in cost, the solvent after reaction is easy to treat, high yield and quite suitable for large-scale industrial production. The sitafloxacin pharmaceutical composition obtained by virtue of the preparation method provided by the invention can be used for further improving the product dissolution effect, improving the in-vivo bioavailability of the sitafloxacin and enhancing the exertion of medical effect.
Derivatives of 1-(2-fluorocyclopropyl)-quinolonecarboxylic acid and 1-(2-fluorocyclopropyl)-naphthridonecarboxylic acid
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, (2008/06/13)
The invention relates to novel derivatives of 1-(2-fluorocyclopropyl)-quinolonecarboxylic acid and 1-(2-fluorocyclopropyl)-naphthyridonecarboxylic acid which are substituted in the 7 position by a 2,3,4,5,6,7-hexahydro-1H-pyrrolo[3,4-c]pyridin-2-yl or 1,2,3,4,5,6-hexahydropyrrolo[3,4-c]pyrrol-2-yl residue, to their salts, to a process for their preparation and to antibacterial agents containing these derivatives.
