A novel series of fused pyrimidine derivatives were designed, synthesized and evaluated as GPR119 agonists. Among them, cyclohexene fused compounds (tetrahydroquinazolines) showed greater GPR119 agonistic activities than did dihydrocyclopentapyrimidine and tetrahydropyridopyrimidine scaffolds. Analogues (16, 19, 26, 28, 42) bearing endo-N-Boc-nortropane amine and fluoro-substituted aniline exhibited better EC50 values (0.27-1.2 μM) though they appeared to be partial agonists.
Keywords: Dihydrocyclopentapyrimidine; GPR119 agonists; Tetrahydroquinazoline; endo-N-boc-nortropane amine.
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