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Novel amide and imidazole compounds as potent hematopoietic prostaglandin D-2 synthase inhibitors
In seeking novel and potent small molecule hematopoietic prostaglandin D-2 synthase (H-PGDS) inhibitors as potential therapies for PGD(2)-mediated diseases and conditions, we explored a series comprising multiple aryl/heteroaryl rings attached in a linear arrangement. Each compound incorporates an amide or imidazole linker between the pyrimidine or pyridine core ring and the tail ring system. We synthesized and screened twenty analogs by fluorescence polarization binding assay, thermal shift assay, glutathione S-transferase inhibition assay, and a cell-based assay measuring suppression of LPS-induced PGD(2) stimulation. Amide analogs show ten-fold greater shift in the thermal shift assay in the presence of glutathione (GSH) versus the same assay run in the absence of GSH. The imidazole analogs did not produce a significant change in thermal shift between the two assay conditions, suggesting a possible stabilization effect of the amide linker in the synthase-GSH-inhibitor complex. Imidazole analog 23, (KMN-010034) demonstrates superior potency across the in vitro assays and good in vitro metabolic stability in both human and guinea pig liver microsomes.
I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 93-60-7 help many people in the next few years. Category: pyridine-derivatives.
Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem