| abstract |
A compound of Formula (I), a stereoisomer thereof, a radioisotope thereof, or a pharmaceutically acceptable salt thereof **(See formula)** wherein Ar is a heteroaryl which may be optionally substituted with 1, 2, or 3 substituents where each substituent is independently C1-C6 alkyl, C1-C6 haloalkyl, C1-C6 alkoxy, C1-C6 haloalkoxy, -OH, -COOH, amino, nitro, C2-C3 alkanoyl group, C1-C3 mono or dialkylamino, or halogen; n is 1 or 2; m is 1 or 2; R1 is H or halogen; R2 is H, C1-C3 alkoxy, or halogen; R3 is H, halogen or C1-C3 alkoxy; R4 is H, -OH, or halogen; R5 is H, -OH, or halogen; and is a single bond or a double bond, with conditions a) and b) a) when R1 is H then at least one of R2 and R3 is not H; and b) when one or both of R2 and R3 is H then R1 is not H. |