Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
Table 3.
SARS-CoV 3CLpro inhibitory activities (Ki) of 27a–d.
| Entry no. | Inhibitors | Ki (μM) |
|---|---|---|
| 27a |  |
0.66 |
| 27b |  |
37.0 |
| 27c |  |
52.0 |
| 27d |  |
2.50 |