Anti-Viral Compounds

A compound of Formula VII″, or a pharmaceutically acceptable salt thereof

• wherein,
• X is selected from the group consisting of O and C═CH2;
• R1 and R2 are independently selected from the group consisting of F, Cl, Br, CH3, CHF2 and CCH,
• R3, R4 and R5 are independently selected from the group consisting of H, D, F, N3, OCH3, CN, OH, 1H-tetrazol-5-yl, 2H-tetrazol-2-yl, 1H-tetrazol-1-yl, 1H-imidazol-1-yl, 1H-imidazol-2-yl and 1H-imidazol-5-yl;
• and
• P1 is selected from a group consisting of: