C=CC(=O)N(c1ccc(C(C)(C)C)cc1)[C@H](C(=O)NCCc1cccc(F)c1)c1cccnc1
CC#CC(=O)N(c1ccc(C(C)(C)C)cc1)[C@H](C(=O)NCCc1cccc(F)c1)c1cccnc1
Racemic Ugi products, either with furanoyl or acryloyl attachment are nearly equipotent in the fluorescence assay (LON-WEI-2e27a2e5-1, LON-WEI-adc59df6-47). After id'ing the better enantiomer (MAT-POS-f2460aef-1), it would be interesting to see how potent electrophlic versions are. Given the high reactivity of the cat. MPro cysteine, I included a butynamide warhead too.