NOVEL PROCESS FOR THE PREPARATION OF (2R)-2-DEOXY-2-FLUORO-2-METHYL-D-ERYTHRO-PENTONO-GAMMA-LACTONE AND (2S)-2-DEOXY-2-FLUORO-2-METHYL-D-ERYTHRO-PENTONO-GAMMA-LACTONE
NOVEL PROCESS FOR THE PREPARATION OF (2R)-2-DEOXY-2-FLUORO-2-METHYL-D-ERYTHRO-PENTONO-GAMMA-LACTONE AND (2S)-2-DEOXY-2-FLUORO-2-METHYL-D-ERYTHRO-PENTONO-GAMMA-LACTONE
[EN] ALTERNATE PROCESS FOR PREPARING 3,5-DI-OMICRON-ACYL-2-FLUORO-2-C-METHYL-D-RIBONO-GAMMA-LACTONE<br/>[FR] NOUVEAU PROCÉDÉ SERVANT À PRÉPARER DE LA 3,5-DI-OMICRON-ACYL-2-FLUORO-2-C-MÉTHYL-D-RIBONO-GAMMA-LACTONE
申请人:HOFFMANN LA ROCHE
公开号:WO2008090046A1
公开(公告)日:2008-07-31
[EN] The present invention provides a novel process for the preparation of lactone daerivatives of the formula (1) which are key intermediates in the preparation of 1-(2-deoxy-2-fluoro-2-C-methyl- b -D-ribofuranosyl)cytosine (2) a compound that possesses potent and selective anti-hepatitis C virus activity (PCT Publication WO 2005/003147). [FR] La présente invention concerne un nouveau procédé pour la préparation de dérivés lactone de formule (1) lesquels sont des intermédiaires clés dans la préparation de 1-(2-déoxy-2-fluoro-2-C-méthyl-bêta-D-ribofuranosyl)cytosine (2), un composé qui possède une puissante et sélective activité contre le virus de l'hépatite C (publication PCT WO 2005/003147).
NOVEL PROCESS FOR THE PREPARATION OF (2R)-2-DEOXY-2-FLUORO-2-METHYL-D-ERYTHRO-PENTONO-GAMMA-LACTONE AND (2S)-2-DEOXY-2-FLUORO-2-METHYL-D-ERYTHRO-PENTONO-GAMMA-LACTONE
申请人:Cedilote Miall
公开号:US20080177079A1
公开(公告)日:2008-07-24
The present invention provides novel methods for preparing compounds (2R)-2-deoxy-2-fluoro-2-methyl-D-erythro-pentono-γ-lactone (11) and (2S)-2-deoxy-2-fluoro-2-methyl-D-erythro-pentono-γ-lactone (12), which are intermediates for preparing a key intermediate 3,5-di-O-acyl-2-fluoro-2-C-methyl-D-ribono-γ-lactone (B), for the preparation of 1-(2-deoxy-2-fluoro-2-C-methyl-β-D-ribofuranosyl)cytosine (A), which is a potent and selective anti-hepatitis C virus agent.