Table 3 Virus Yield Reduction Data for Compound 7 Against Three Variants of SARS-CoV-2 in Caco-2 Cells

From: Potent and selective covalent inhibition of the papain-like protease from SARS-CoV-2

Strain

Compound

EC90a (μM)

CC50b (μM)

SI90c

USA-WA1/2020

7

0.26

>10

>38

 

EIDD-1931

0.12

94

780

Delta (B1.617.2)

7

>10

>10

0

 

EIDD-1931

4.9

>100

>20

Omicron (B1.1.529)

7

2.4

>10

>4.2

 

EIDD-1931

2.9

>100

>34

  1. The RNA-dependent RNA polymerase inhibitor EIDD-1931 was used as a positive control.
  2. aEC90 = 90% effective concentration.
  3. bCC50 = 50% cytotoxic concentration.
  4. cSI90 = CC50/EC90.