Patent ID: 7977361

Claim:
A compound consisting of formula I: or a pharmaceutically acceptable salt thereof, optionally in the form of a single stereoisomer or mixtures of stereoisomers thereof, wherein: X is a (C 1 -C 10 )alkylenyl, wherein at least one of the (C 1 -C 10 )alkylenyl carbon atoms is optionally replaced by —CO—, —CONR′—, —NR′CO—, —NR′—, —O—, —S—, a (C 3 -C 8 )cycloalkyl or a (C 3 -C 8 )heterocycloalkyl ring, wherein at least one of the atoms of the (C 3 -C 8 )cycloalkyl or a (C 3 -C 8 )heterocycloalkyl ring is unsubstituted or substituted with 1, 2, 3 or 4 X 1 , or a combination thereof; each X 1 is independently selected from the group consisting of hydroxyl, thiol, amino, alkyl, alkoxy, thioalkyl and halo; Y is a triazolyl of the formula: Z is a (C 1 -C 10 )alkylenyl group wherein at least one of the atoms of the (C 1 -C 10 )alkylenyl group is optionally replaced by —CO—, —CONR″, —NR″CO—, —NR″—, —O— and —S—, and wherein at least one of the atoms of the (C 1 -C 10 )alkylenyl group is unsubstituted or substituted with 1, 2, 3 or 4 X 1 ; A is a radioactive isotope; and R′ and R″ are each independently H or are each independently selected from the group consisting of (C 1 -C 6 )alkyl, —CO(C 1 -C 3 )alkyl, —CONH(C 1 -C 3 )alkyl and —CO 2 (C 1 -C 3 )alkyl.