ethyl 5-(2-oxo-2-(2,3,4-trihydroxyphenyl)ethyl)furan-2-carboxylate

MMG-11 is a potent and selective human TLR2 antagonist with low cytotoxicity. MMG-11 inhibits both TLR2/1 and TLR2/6 signaling with IC50s of 1.7 μM for Pam3CSK4-induced hTLR2/1 and 5.7 μM for Pam2CSK4-induced hTLR2/6 responses[1]. MMG-11 neither shows cellular toxicity nor interference with signaling induced by other TLR agonists, IL-1β or TNF. MMG-11 (0.01-100 μM) shows no cytotoxic effects up to 100 μM in peripheral blood mononuclear cells (PBMCs)[1].

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[1]. Grabowski M, et al. Identification of a pyrogallol derivative as a potent and selective human TLR2 antagonist by structure-based virtual screening. Biochem Pharmacol. 2018 Aug;154:148-160.