Few (Z)-alpha-N-benzoylamino-beta-(fluorophenyl)-acrylic acids and their esters were prepared by known procedures and hydrogenated to the corresponding optically active alpha-benzoyl-beta-(fluorophenyl)-alanine derivatives with optical yields up to 90% using the rhodium complexes of "PROPRAPHOS" and O,N-bis(diphenylphosphino)-2-exo-hydroxy, 3-endo-methylamino-norbornane as chiral catalysts. The method proved to be apt for upscaling the preparation. Deacylation of the obtained amino acids gave the hydrochlorides of the fluorinated phenylalanines in very pure state.
[EN] INHIBITORS OF HCV NS5B POLYMERASE<br/>[FR] INHIBITEURS DE LA POLYMERASE NS5B DU VHC
申请人:UPJOHN CO
公开号:WO2004002977A1
公开(公告)日:2004-01-08
The present invention porivdes compounds of Formula I, compositons and methods that are useful for treating viral infections and associated diseases, particularly HCV infections and associated diseases.
The present invention provides compounds of Formula I, compositions and methods that are useful for treating viral infections and associated diseases, particularly HCV infections and associated diseases.
Few (Z)-alpha-N-benzoylamino-beta-(fluorophenyl)-acrylic acids and their esters were prepared by known procedures and hydrogenated to the corresponding optically active alpha-benzoyl-beta-(fluorophenyl)-alanine derivatives with optical yields up to 90% using the rhodium complexes of "PROPRAPHOS" and O,N-bis(diphenylphosphino)-2-exo-hydroxy, 3-endo-methylamino-norbornane as chiral catalysts. The method proved to be apt for upscaling the preparation. Deacylation of the obtained amino acids gave the hydrochlorides of the fluorinated phenylalanines in very pure state.