396133-38-3Relevant academic research and scientific papers
PROCESSES FOR THE PREPARATION OF 7-SUBSTITUTED 3,3-DIMETHYL-4-AMINO-PIPERIDINO-QUINOLONE CARBOXYLIC ACID DERIVATIVES
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Page/Page column 10, (2008/06/13)
The present invention relates to process for the preparation of racemic and optically pure enantiomers of 1-cyclopropyl-6-fluoro-8-methyl-7-(4-amino-3,3-dimethyl-piperidin-1-yl)-4- oxo-l,4-dihydro-quinolin-3-carboxylic acid and salts thereof. The present invention also provides novel crystalline forms of racemic and optically pure enantiomers of 1-cyclopropyl- 6-fluoro-8-methyl-7-(4-amino-3,3-dimethyl-piperidin-1 -yl)-4-oxo-1,4-dihydro-quinolin-3- carboxylic acid hydrochloride and compositions containing polymorphs. The present invention further provides pure (RS)-(±)-4-amino-3,3-dimethyl-piperidine and pure (R) or (S)-enantiomers of 4-amino-3,3-dimethyl-piperidine compounds.
Generation triple-targeting, chiral, broad-spectrum antimicrobial 7-substituted piperidino-quinolone carboxylic acid derivatives, their preparation, compositions and use as medicaments
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, (2008/06/13)
This invention relates to new generation triple-targeting, chiral, broad-spectrum antimicrobial 7-substituted piperidino-quinolone carboxylic acid derivatives, to their optical isomers, diastereomers or enantiomers, as well as pharmaceutically acceptable salts, hydrates, prodrugs, polymorphs and pseudopolymorphs thereof, to their preparation, to their compositions and to their use.
