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Publication Abstract from PubMed

A series of tetrahydronaphthyridine derivatives as novel RORgammat inverse agonists were designed and synthesized. We reduced the lipophilicity of tetrahydroisoquinoline compound 1 by replacement of the trimethylsilyl group and SBDD-guided scaffold exchange, which successfully afforded compound 7 with a lower log D value and tolerable in vitro activity. Consideration of LLE values in the subsequent optimization of the carboxylate tether led to the discovery of [ cis-3-({(5 R)-5-[(7-fluoro-1,1-dimethyl-2,3-dihydro-1 H-inden-5-yl)carbamoyl]-2-methoxy-7,8-dihydro-1,6-naphthyridin-6(5 H)-yl}carbonyl)cyclobutyl]acetic acid, TAK-828F (10), which showed potent RORgammat inverse agonistic activity, excellent selectivity against other ROR isoforms and nuclear receptors, and a good pharmacokinetic profile. In animal studies, oral administration of compound 10 exhibited robust and dose-dependent inhibition of IL-17A cytokine expression in a mouse IL23-induced gene expression assay. Furthermore, development of clinical symptoms in a mouse experimental autoimmune encephalomyelitis model was significantly reduced. Compound 10 was selected as a clinical compound for the treatment of Th17-driven autoimmune diseases.

Discovery of [ cis-3-({(5 R)-5-[(7-Fluoro-1,1-dimethyl-2,3-dihydro-1 H-inden-5-yl)carbamoyl]-2-methoxy-7,8-dihydro-1,6-naphthyridin-6(5 H)-yl}carbonyl)cyclobutyl]acetic Acid (TAK-828F) as a Potent, Selective, and Orally Available Novel Retinoic Acid Receptor-Related Orphan Receptor gammat Inverse Agonist.,Kono M, Ochida A, Oda T, Imada T, Banno Y, Taya N, Masada S, Kawamoto T, Yonemori K, Nara Y, Fukase Y, Yukawa T, Tokuhara H, Skene R, Sang BC, Hoffman ID, Snell GP, Uga K, Shibata A, Igaki K, Nakamura Y, Nakagawa H, Tsuchimori N, Yamasaki M, Shirai J, Yamamoto S J Med Chem. 2018 Mar 14. doi: 10.1021/acs.jmedchem.8b00061. PMID:29510038^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.