PROCEDE POUR LA PREPARATION DE DERIVES DE PYRAZOLO [4,3-D] PYRIMIDINE-7-ONE-3-PYRIDYLSULFONYLE, ET INTERMEDIAIRES UTILISES

PROCEDE POUR LA PREPARATION DE DERIVES DE PYRAZOLO [4,3-D] PYRIMIDINE-7-ONE-3-PYRIDYLSULFONYLE, ET INTERMEDIAIRES UTILISES

A process is provided for the preparation of compounds of formula (I) herein comprising reacting a compound of formula (II), (III) or (IV) in the presence of OR and a hydroxide trapping agent or in the case of compounds of formula (IV) reacting in the presence of an auxiliary base and a hydroxide tr...

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Bibliographische Detailangaben
Hauptverfasser: KEITH MICHAEL DEVRIES, ALBERT SHAW WOOD, JOANNA TERESA NEGRI, PHILIP CHARLES LEVETT
Format: Patent
Sprache:fre
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
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Beschreibung
Zusammenfassung:A process is provided for the preparation of compounds of formula (I) herein comprising reacting a compound of formula (II), (III) or (IV) in the presence of OR and a hydroxide trapping agent or in the case of compounds of formula (IV) reacting in the presence of an auxiliary base and a hydroxide trapping agent (i.e. OR is substituted by the auxiliary base), wherein X is a leaving group and R to R are as defined above.