Lead optimizationZorko, Tilen (Avtor) Kogovšek, Jan (Avtor) Ciber, Luka (Avtor) Ostojić, Ivana (Avtor) Maraš, Nenad (Avtor) Novinec, Marko (Avtor) Štefane, Bogdan (Avtor) SIRT6sirtuin activatorsgrisefulvinforvisirvatagingSIRT6, a crucial regulator of aging and cellular homeostasis, represents a promising target for small-molecule activation. In this study, we investigate griseofulvin and its derivatives as novel SIRT6 activators, focusing on the recently developed compound forvisirvat, which has progressed to Phase 2 clinical study. Biochemical evaluation revealed that griseofulvin itself possesses strong SIRT6-activating properties, achieving up to 10-fold activity at 100 μM. Modification of the griseofulvin scaffold generally led to reduced activity, prompting a focus on the oxadiazole moiety of forvisirvat. This strategy produced several analogues with higher potency, the most active at 100 μM being para-1,3,4-oxadiazolephenyl analog 21, which achieved 30-fold SIRT6 activation. Compounds bearing para-substituted phenyl rings exhibited excellent retention of activity at lower concentrations, with para-tolyl derivative 24 being the most potent at 10 μM. Retention of activity at pharmacologically relevant concentrations underscores their potential as potent SIRT6 activators and provides a rationale for continued development as drug candidates.20262026-03-16 13:05:35Članek v reviji180760UDK: 547.7:577.24ISSN pri članku: 1948-5875DOI: 10.1021/acsmedchemlett.5c00690COBISS_ID: 270595331sl