1-Cyclohexyl-4-[3-(5-methoxy-1, 2, 3, 4-tetrahydronaphthalen-1-yl) propyl] piperazine 1 (PB28) represents an excellent lead candidate for therapeutic and/or diagnostic applications in oncology. However, because its utility is limited by its relatively high degree of lipophilicity, novel analogues of 1 with reduced lipophilic character were designed by substituting methylene groups with more polar functional groups in the propylene linker and at the ...