Leriglitazone (Hydroxypioglitazone) hydrochloride, a metabolite of pioglitazone. Leriglitazone (Hydroxypioglitazone) hydrochloride PioOH is a PPARγ agonist, stabilizes the PPARγ activation function-2 (AF-2) co-activator binding surface and enhances co-activator binding, affording slightly better transcriptional efficacy. Leriglitazone (Hydroxypioglitazone) hydrochloride binds to the PPARγ C-terminal ligand-binding domain (LBD) with a Ki of 1.2 μM，Leriglitazone induces transcriptional efficacy of the PPARγ (LBD) with an EC50 of 680 nM[1].
[1]. Mosure SA,et al. Structural Basis of Altered Potency and Efficacy Displayed by a Major in Vivo Metabolite of the Antidiabetic PPARγ Drug Pioglitazone. J Med Chem. 2019 Feb 28;62(4):2008-2023.