A thorough investigation of the challenging Pd-catalyzed fluorination of five-membered heteroaryl bromides is presented. Crystallographic studies and density functional theory (DFT) calculations suggest that the challenging step of this transformation is C-F reductive elimination of five-membered heteroaryl fluorides from Pd(II) complexes. On the basis of these studies, we have found that various heteroaryl bromides bearing phenyl groups in the ortho position can be effectively fluorinated under catalytic conditions. Highly activated 2-bromoazoles, such as 8-bromocaffeine, are also viable substrates for this reaction.
[EN] INHIBITORS OF CYSTEINE PROTEASES AND METHODS OF USE THEREOF<br/>[FR] INHIBITEURS DE CYSTÉINE PROTÉASES ET LEURS PROCÉDÉS D'UTILISATION
申请人:PARDES BIOSCIENCES INC
公开号:WO2021252644A1
公开(公告)日:2021-12-16
The disclosure provides compounds of formula II with warheads and their use in treating medical diseases or disorders, such as viral infections. Pharmaceutical compositions and methods of making various compounds with warheads are provided. The compounds are contemplated to inhibit proteases, such as the 3C, CL- or 3CL-like protease. Formula II