abstract |
Formula I: Or a pharmaceutically acceptable salt, tautomer, or stereoisomer thereof, wherein R 1 , R 2 , R 3 , R 4 , R 5 , X 1 , X 2 , X 3 and X 4 are as defined herein and provide a compound comprising at least one F, Cl, Br, I, or 123 I moiety. Also provided are the use of such compounds for cancer imaging, including prostate cancer, and methods of treatment for subjects in need thereof, as well as methods and intermediates for making such compounds. The |