C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 401/04 (2006.01) A61K 31/47 (2006.01)
Patent
CA 2131761
A method for selectively obtaining any one of an anhydrate, a 1/2 hydrate, a 1 hydrate, and a 3/2 hydrate of 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 represented by formula (I) : Image is disclosed, comprising treating the compound in an aqueous solvent or water or recrystallizing the compound from an aqueous solvent or water.
Kawakami Katsuhiro
Kimura Youichi
Mikata Norimasa
Uchiyama Keiji
Uemura Tazuo
Daiichi Pharmaceutical Co. Ltd.
Riches Mckenzie & Herbert Llp
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