- Method for synthesizing moxifloxacin and derivatives thereof
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The invention provides a method for synthesizing moxifloxacin and derivatives thereof. Aminopyrrolidone derivatives are constructed to further obtain (S,S)-2,8-diazo-bicyclo[4.3.0]nonane so as to synthesize the moxifloxacin and the derivatives thereof. The method has the beneficial effects that raw materials are wide in source and low in price; chiral resolution is not needed in a preparation process; the yield and purity are relatively high; the process cost is further reduced; obvious economic value is achieved.
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- Quinolonecarboxylic acids
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The invention relates to novel derivatives of quinolonecarboxylic acid and naphthyridonecarboxylic acid which are linked to a β-lactam antibiotic, to their salts, to processes for their preparation and to antibacterial agents containing these derivatives.
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- 7-(1-PYRROLIDINYL)-3-QUINOLONE-AND-NAPHTHYRIDONECARBOXYLIC ACID DERIVATIVES AS ANTIBACTERIAL AGENTS AND FEED ADDITIVES
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7-(1-Pyrrolidinyl)-3-quinolone- and -naphthyridonecarboxylic acid derivatives as antibacterial agents and feed additives, of the formula in which X1 is halogen, X2 is hydrogen, halogen, amino or other radical, R1 is alkyl, cycloalkyl, optionally substituted phenyl or other radical, R2 is hydrogen, alkyl or a dioxolylmethyl radical, R 3 i s A is N, CH, C-halogen, or the like, or forms a bridge with R1, and addition products thereof
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