PROCESS FOR SELECTIVE PREPARATION OF 7-[(7-(S)-AMINO-5- AZASPIRO [2,4]HEPTAN-5-YL) -8-CHLORO-6-FLUORO-1- [(IR,2S)-2-FLUOROCYCLOPROPYL)-4-OXO-1,4-DEHYDROAMINOLINE- 3-CARBOXYLIC ACID 3/2 HYDRATE, ANHYDROUS 7-[(7-(S)-AMINO- 5-AZASPIRO [2,4]HEPTAN-5-YL)-8-CHLORO-6-FLUORO-1-(1R,2S)- 2-FLUOROCYCLOPROPYL-4-OXO-1,4-DIHYDROQUINOLINE-3- CARBOXYLIC ACID AND PHARMACEUTICAL COMPOSITION HAVING ANTIBACTERIAL ACTIVITY Russian patent published in 1999 - IPC

Abstract RU 2126402 C1

FIELD: pharmaceutical industry. SUBSTANCE: claimed process for preparing any of forms: anhydrous 7-[(7-(S)amino-5-azaspiro(2,4) heptan-5-yl)-8- chloro-6-fluoro-1-[(1R, 2S)-2-fluorocyclopropyl)-4-oxo- 1,4-dihydroquinoline-3-carboxylic acid 1/2 hydrate, 1 hydrate and 3/2 hydrate comprises treating compound in aqueous solvent or water, or recrystallizing compound from aqueous solvent or water. The present invention also describes said anhydrous acid based composition having antibacterial activity. Anhydrous acid also shows antimicrobial activity. EFFECT: improved properties of the pharmaceutical composition. 7 cl, 4 dwg, 7 ex, 1 tbl

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RU 2 126 402 C1

Authors

Iuiti Kimura

Katsukhiro Kavakami

Norimasa Mikata

Kejdzi Utijama

Tazuo Uemura

Juzuke Jukimoto

Dates

1999-02-20Published

1994-09-09Filed