Functional evaluation of an electrophilic focused library to identify a covalent inhibitor against intrinsically disordered circadian clock transcription factors

Bioorg Med Chem Lett. 2023 Dec 10:129588. doi: 10.1016/j.bmcl.2023.129588. Online ahead of print.ABSTRACTIn vitro screening of a focused library of compounds containing an electrophilic warhead identified N-chloroacetyl-bis(trifluoromethyl)aniline derivative 15 as a potent inhibitor of BMAL1-CLOCK heterodimer binding to an E-box DNA fragment. Kinetic analysis of thiol-reactivity demonstrated that iodoacetamide and structurally related 20 are significantly more reactive than or equally reactive as 15, respectively, whereas none inhibited BMAL1-CLOCK interaction with the E-box DNA fragment. These results suggest that 15 binds and reacts with a specific nucleophilic residue. This low-molecular-weight compound may serve as a useful lead for further development of BMAL1-CLOCK inhibitors.PMID:38086467 | DOI:10.1016/j.bmcl.2023.129588

Source: Bioorganic and Medicinal Chemistry Letters - December 12, 2023 Category: Chemistry Authors: Kazuya Yamanaka Yoshihisa Inoue Miki Imanishi Junko Ohkanda Source Type: research