C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 487/04 (2006.01) C07D 463/00 (2006.01)
Patent
CA 2213812
The invention is directed to a crystalline anhydrate solvate of loracarbef, and also is directed to a process for preparing a crystalline monohydrate form of the compound of formula (I) which comprises drying a crystalline isopropanolate form of the compound of formula (I) at a temperature of from about 50 ~C to about 100 ~C to provide a crystalline anhydrate form of the compound of formula (I); and exposing the crystalline anhydrate form of the compound of formula (I) to a relative humidity of from about 90 to about 100 %.
L'invention a pour objet un solvate d'anhydrate cristallin de loracarbef et concerne également un procédé de préparation d'une forme monohydratée cristalline du composé répondant à la formule (I). Ce procédé consiste à sécher une forme cristalline d'isopropanolate du composé de la formule (I) à une température comprise entre 50 et 100 ·C environ pour obtenir une forme anhydratée cristalline du composé de la formule (I). Ensuite, le procédé consiste à exposer la forme anhydratée cristalline du composé de la formule (I) à une humidité relative de 90 à 100 %.
Henning William Carl
Stout Theodore R.
Eli Lilly And Company
Gowling Lafleur Henderson Llp
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