CPC C07D 257/04 (2013.01) [A61P 31/14 (2018.01)] | 4 Claims |
1. A compound of formula I, a pharmaceutically acceptable salt thereof, or a tautomer thereof,
![]() wherein R1, R2, R3, and R4 are each independently selected from the group consisting of hydrogen, methyl, t-butyl, methoxy, difluoromethyl, trifluoromethyl, trifluoromethoxy, nitro, halo, phenyl and heteroarylcyclyl; R5 is hydrogen or halo; R6 is hydrogen, or an alkyl or cycloalkyl having 1 to 4 carbon atoms; and
wherein the compound inhibits coronavirus 3CL protease activity.
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