Tetrazole Compounds Which Selectively Modulate The CB2 Receptor

A compound of the formula (I)

• wherein:
• R1 is C1-10 alkyl, C1-10 alkoxy, C3-10 cycloalkyl, 3-10 membered saturated heterocyclic ring or aryl each optionally independently substituted with 1-3 substituents chosen from C1-4 alkyl, C1-4 alkoxy, C3-10 cycloalkyl, C1-4 alkylsulfonyl, acyl, oxo, cyano, phenyl, hydroxyl and halogen;
• R2 and R3 are C1-4 alkyl or hydrogen with the proviso that both R2 and R3 cannot be hydrogen;
• or R2 and R3 together with the carbon atom to which they are attached form a 3- to 6-membered cycloalkyl or heterocyclic ring;
• R4 is hydrogen or methyl;
• R5 is chosen from C1-10 alkyl, C1-10 alkoxy, C3-10 cycloalkyl, 3-10 membered saturated heterocyclic ring, 5-6 membered heteroaryl ring and aryl each optionally independently substituted with 1-3 substituents chosen from C1-4 alkyl, C1-4 alkoxy, C3-10 cycloalkyl, C1-4 alkylsulfonyl, acyl, oxo, cyano, hydroxyl and halogen;
• n is 0, 1 or 2;
• wherein any carbon atom on the formula (I) or any R substituent listed above is optionally partially or fully halogenated where possible;
• or a pharmaceutically acceptable salt thereof.