Abstract: This invention relates to a stereochemically pure uracyl spirooxetane nucleoside phosphoramidate useful in the treatment of patients infected with the hepatitis C virus (HCV).

Abstract: This invention relates to a stereochemically pure uracyl spirooxetane nucleoside phosphoramidate which inhibits the hepatitis C virus (HCV).

Abstract: Compounds of the formula I: including any possible stereoisomers thereof, wherein: R4 is a monophosphate, diphosphate or triphosphate ester; or R4 is R7 is optionally substituted phenyl, optionally substituted naphthyl, or optionally substituted indolyl; R8 and R8? are hydrogen, C1-C6alkyl, benzyl, or phenyl; or R8 and R8? form C3-C7cycloalkyl; R9 is C1-C10alkyl, C3-C7cycloalkyl, phenyl or phenyl-C1-C6alkyl, wherein the phenyl moiety in phenyl or phenyl-C1-C6alkyl is optionally substituted; or a pharmaceutically acceptable salt or solvate thereof; pharmaceutical formulations and the use of compounds I as HCV inhibitors.

Abstract: Compounds of the formula I: including any possible stereoisomers thereof, wherein: R4 is a monophosphate, diphosphate or triphosphate ester; or R4 is R7 is optionally substituted phenyl, optionally substituted naphthyl, or optionally substituted indolyl; R8 and R8? are hydrogen, C1-C6alkyl, benzyl, or phenyl; or R8 and R8? form C3-C7cycloalkyl; R9 is C1-C10alkyl, C3-C7cycloalkyl, phenyl or phenyl-C1-C6alkyl, wherein the phenyl moiety in phenyl or phenyl-C1-C6alkyl is optionally substituted; or a pharmaceutically acceptable salt or solvate thereof; pharmaceutical formulations and the use of compounds I as HCV inhibitors.

Abstract: Compounds of the formula I: including any possible stereoisomers thereof, wherein: R4 is a monophosphate, diphosphate or triphosphate ester; or R4 is R7 is optionally substituted phenyl, optionally substituted naphthyl, or optionally substituted indolyl; R8 and R8? are hydrogen, C1-C6alkyl, benzyl, or phenyl; or R8 and R8? form C3-C7cycloalkyl; R9 is C1-C10alkyl, C3-C7cycloalkyl, phenyl or phenyl-C1-C6alkyl, wherein the phenyl moiety in phenyl or phenyl-C1-C6alkyl is optionally substituted; or a pharmaceutically acceptable salt or solvate thereof; pharmaceutical formulations and the use of compounds I as HCV inhibitors.

Abstract: Compounds of formula I: wherein: R2 is hydrogen or C1-C4alkyl; R3 and R4 are hydrogen, —C(?O)R5, or —C(?O)CHR6—NH2; or R3 is hydrogen and R4 is a monophosphate-, diphosphate-, or triphosphate ester; or R3 is hydrogen, —C(?O)CHR5, or —C(?O)CHR6—NH2 and R4 is each R5 is hydrogen, C1-C6alkyl, or C3-C7cycloalkyl; R6 is hydrogen or C1-C6alkyl; R7 is optionally substituted phenyl; naphthyl; or indolyl; R8 and R8? are hydrogen, C1-C6alkyl, benzyl; or R8 and R8? combined form C3-C7cycloalkyl; R9 is C1-C6alkyl, benzyl, or optionally substituted phenyl; provided that R2, R3 and R4 are not all hydrogen; or a pharmaceutically acceptable salt or solvate thereof; pharmaceutical formulations with the compounds I; the use of compounds I, including the compounds of formula I wherein R2, R3 and R4 are all hydrogen, as HCV inhibitors.

Abstract: Compounds of the formula I: including any possible stereoisomers thereof, wherein: R1 is hydrogen or halo; R4 is a monophosphate, diphosphate or triphosphate ester; or R4 is a group of formula R7 is optionally substituted phenyl; naphthyl; indolyl or N—C1-C6alkyloxycarbonyl-indolyl; R8 is hydrogen, C1-C6alkyl, benzyl; R8? is hydrogen, C1-C6alkyl, benzyl; or R8 and R8? together with the carbon atom to which they are attached form C3-C7cycloalkyl; R9 is C1-C10alkyl, benzyl, or optionally substituted phenyl; or a pharmaceutically acceptable salt or solvate thereof. pharmaceutical formulations and the use of compounds I as HCV inhibitors.