Method of forming hydromorphinone compositions

A method for the preparation of a ketone from a narcotic alkaloid having an allyl alcohol moiety is disclosed. The method includes mixing the narcotic alkaloid with an acid in the presence of a catalyst wherein the method is carried out in the substantial absence of hydrogen gas. Also disclosed is a...

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Bibliographic Details
Main Authors GAULT, ROBERT, SANDISON, MARK, D, HARCLERODE, WILLIAM, H
Format Patent
LanguageEnglish
French
German
Published 26.10.2011
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Summary:A method for the preparation of a ketone from a narcotic alkaloid having an allyl alcohol moiety is disclosed. The method includes mixing the narcotic alkaloid with an acid in the presence of a catalyst wherein the method is carried out in the substantial absence of hydrogen gas. Also disclosed is a method of forming a pharmaceutical composition comprising a hydromorphone salt, 8-hydroxy hydromorphone and dihydromorphone by heating an aqueous mixture of said salt, 8-hydroxy hydromorphone and dihydromorphone for a time sufficient to reduce the concentration of 8-hydroxy hydromorphone to less than about 1.0%. The methods are useful for preparing hydromorphone or hydrocodone compositions having novel impurity profiles.
Bibliography:Application Number: EP20100171268