split-type synthesis of various tripeptides and pentapeptides was conducted using a fluorous-Fmoc protection strategy. Fluorous-Fmoc reagents were effectively used as both the protecting group for the amino function and the encoding tag for the amino acid structure. Several of the synthetic peptides prepared showed high activities in an ACE inhibitory assay. A liquid-phase split-type synthesis of various
Porcine epidemic diarrhea virus (PEDV) causes high mortality in pigs. PEDV main protease (M-pro) plays an essential role in viral replication. We solved the structure of PEDV complexed with peptidomimetic inhibitor N3 carrying a Michael acceptor warhead, revealing atomic level interactions. We further designed a series of 17 inhibitors with altered side groups. Inhibitors M2 and M17 demonstrated enhanced specificity against PEDV M-pro. These compounds have potential as future therapeutics to combat PEDV infection.