Push-pull benzothiazole derivatives as probes for detecting -amyloid plaques in Alzheimer's brains.


We synthesized push-pull benzothiazole derivatives and evaluated their potential as -amyloid imaging probes. In binding experiments in vitro, the benzothiazoles showed excellent affinity for synthetic A(1-42) aggregates. -Amyloid plaques in the mouse and human brain were clearly visualized with the benzothiazoles, reflecting the results in vitro. These compounds may be a useful scaffold for the development of novel PET/SPECT and fluorescent tracers for detecting -amyloid in Alzheimer's brains.