Patent ID: 8778943

Claim:
A compound selected from the group consisting of: (4aR,13 aS)—N-[(2,4-Difluorophenyl)methyl]-10-hydroxy-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1′,2′:3,4]imidazo[1,2-d]pyrazine-8-carboxamide; (4aS,13 aR)—N-[(2,4-Difluorophenyl)methyl]-10-hydroxy-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1′,2′:3,4]imidazo[1,2-c]pyrazine-8-carboxamide; and (4aS,13 aR)—N-[(4-Fluorophenyl)methyl]-10-hydroxy-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1′,2′:3,4]imidazo[1,2-d]pyrazine-8-carboxamide; enantiomers thereof diastereomers thereof mixtures of enantiomers thereof mixtures of diastereomers thereof mixtures of enantiomers and diastereomers thereof and pharmaceutically acceptable salts thereof.