10.1016/S0960-894X(03)00253-1
The research focuses on the design and synthesis of phosphotyrosine mimetics, which are of significant interest as potential therapeutic agents and research tools for selectively inhibiting protein tyrosine phosphatases (PTPases). These enzymes play a crucial role in regulating tyrosine phosphorylation and cellular function, and their inhibition could have therapeutic potential for diseases such as diabetes, cancer, and osteoporosis. The study involved the synthesis of phenylalanine derivatives, designed to mimic phosphorylated tyrosine or to act as irreversible active site inhibitors of PTPases. Key chemicals used in the synthesis process included Fmoc-l-Tyr-(3-NO2)-OH, CDI, MeOH, SnCl2, phosgene, TsCl, pyridine, SO2Cl2, and various other reagents and solvents. The synthesized compounds were then incorporated into a combinatorial library and screened for their ability to inhibit four phosphatases, showing moderate potency and selectivity, with the type 2d phosphotyrosine mimetic exhibiting the best activity. However, further analysis of enzymatic inhibition was not possible due to the termination of operations at Molecumetics.