NOVEL AND PRACTICAL PROCESS FOR EXCLUSIVELY PRODUCING (S)-9-FLUORO-3-METHYL-10-(4-METHYL-1-PIPERAZINYL)-7-OXO-2,3-DIHYDRO-7H-PYRIDO-[1,2,3,DE][1,4]BENZOXAZINE-6-CARBOXYLIC ACID HEMIHYDRATE
A novel and practical process for selectively producing a pyridobenzoxazine carboxylic acid hemihydrate (e.g., (S)-9-fluoro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-2,3-dihydro-7H-pyrido-[1,2,3-de][1,4]benzoxazine-6-carboxylic acid hemihydrate) in high yield via crystallization from an organic sol...
Saved in:
Main Authors | , , , , , , |
---|---|
Format | Patent |
Language | English |
Published |
04.02.2010
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | A novel and practical process for selectively producing a pyridobenzoxazine carboxylic acid hemihydrate (e.g., (S)-9-fluoro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-2,3-dihydro-7H-pyrido-[1,2,3-de][1,4]benzoxazine-6-carboxylic acid hemihydrate) in high yield via crystallization from an organic solvent or a mixed organic solvent system containing a calculated amount of water released from sodium sulfate decahydrate under gradually heating. |
---|---|
Bibliography: | Application Number: US20080253553 |