Design and Evaluation of Bispidine-Based SARS-CoV-2 Main Protease Inhibitors

Dmitriy Shcherbakov, Dmitriy Baev, Mikhail Kalinin, Alexander Dalinger, Varvara Chirkova, Svetlana Belenkaya, Aleksei Khvostov, Dmitry Krut'Ko, Aleksei Medved'Ko, Ekaterina Volosnikova, Elena Sharlaeva, Daniil Shanshin, Tatyana Tolstikova, Olga Yarovaya, Rinat Maksyutov, Nariman Salakhutdinov, Sergey Vatsadze

Research output: Contribution to journalArticlepeer-review

Abstract

For the first time, derivatives of 3,7-diazabicyclo[3.3.1]nonane (bispidine) were proposed as potential inhibitors of the SARS-CoV-2 main viral protease (3-chymotrypsin-like, 3CLpro). Based on the created pharmacophore model of the active site of the protease, a group of compounds were modeled and tested for activity against 3CLpro. The 3CLpro activity was measured using the fluorogenic substrate Dabcyl-VNSTLQSGLRK(FAM)MA; the efficiency of the proposed approach was confirmed by comparison with literature data for ebselen and disulfiram. The results of the experiments performed with bispidine compounds showed that 14 compounds exhibited activity in the concentration range 1-10 μM, and 3 samples exhibited submicromolar activity. The structure-activity relationship studies showed that the molecules containing a carbonyl group in the ninth position of the bicycle exhibited the maximum activity. Based on the experimental and theoretical results obtained, further directions for the development of this topic were proposed.

Original languageEnglish
JournalACS Medicinal Chemistry Letters
Early online date29 Sep 2021
DOIs
Publication statusE-pub ahead of print - 29 Sep 2021

Keywords

  • 3,7-diazabicyclo[3.3.1]nonane
  • bispidinone
  • inhibition
  • molecular docking
  • SARS-CoV-2 main viral protease

OECD FOS+WOS

  • 1.04.EE CHEMISTRY, ORGANIC
  • 3.02 CLINICAL MEDICINE
  • 1.06.CQ BIOCHEMISTRY & MOLECULAR BIOLOGY

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