Process for preparing atazanavir bisulfate and novel forms

A process is provided which employs reactive controlled crystallization to produce drug substance having desirable crystal properties which process involves providing reactants A and B in liquid or solution form and adding reactant B to reactant A using a cubic or incremental addition technique to c...

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Bibliographic Details
Main Authors LOTZ, BRUCE T, GOUGOUTAS, JACK Z, KIM, SOOJIN, MALLEY, MARY F, SRIVASTAVA, SUSHIL K, DAVIDOVICH, MARTHA
Format Patent
LanguageChinese
English
Published 21.07.2014
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Summary:A process is provided which employs reactive controlled crystallization to produce drug substance having desirable crystal properties which process involves providing reactants A and B in liquid or solution form and adding reactant B to reactant A using a cubic or incremental addition technique to control extent of reaction and thus crystallization kinetics, including supersaturation and nucleation, to produce crystals of drug substance which are generally larger, better quality and with few fines and narrow particle size distribution than normally obtainable employing prior art crystallization techniques. In addition, crystals of drug substance produced by the above process is also provided.
Bibliography:Application Number: TW200594114255