A Dual Inhibitor of DYRK1A and GSK3β for Β‐cell Proliferation: Aminopyrazine Derivative GNF4877

Loss of beta-cell mass and function can lead to insufficient insulin levels and ultimately to hyperglycemia and diabetes mellitus. The mainstream treatment approach involves regulation of insulin levels; however, approaches intended to increase beta-cell mass are less developed. Promoting beta-cell proliferation with low-molecular-weight inhibitors of dual-specificity tyrosine-regulated kinase 1A (DYRK1A) offers the potential to treat diabetes with oral therapies by restoring beta-cell mass, insulin content and glycemic control. GNF4877, a potent dual inhibitor of DYRK1A and glycogen synthase kinase 3 beta (GSK3 beta) was previously reported to induce primary human beta-cell proliferationin vitroandin vivo. Herein, we describe the lead optimization that lead to the identification of GNF4877 from an aminopyrazine hit identified in a phenotypic high-throughput screening campaign measuring beta-cell proliferation.