Abstract:
:Retinoic acid receptor related orphan receptor γt (RORγt), has been identified as the master regulator of TH17-cell function and development, making it an attractive target for the treatment of autoimmune diseases by a small-molecule approach. Herein, we describe our investigations on a series of 4-aryl-thienyl acetamides, which were guided by insights from X-ray cocrystal structures. Efforts in targeting the cofactor-recruitment site from the 4-aryl group on the thiophene led to a series of potent binders with nanomolar activity in a primary human-TH17-cell assay. The observation of a DMSO molecule binding in a subpocket outside the LBD inspired the introduction of an acetamide into the benzylic position of these compounds. Hereby, a hydrogen-bond interaction of the introduced acetamide oxygen with the backbone amide of Glu379 was established. This greatly enhanced the cellular activity of previously weakly cell-active compounds. The best compounds combined potent inhibition of IL-17 release with favorable PK in rodents, with compound 32 representing a promising starting point for future investigations.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Narjes F,Xue Y,von Berg S,Malmberg J,Llinas A,Olsson RI,Jirholt J,Grindebacke H,Leffler A,Hossain N,Lepistö M,Thunberg L,Leek H,Aagaard A,McPheat J,Hansson EL,Bäck E,Tångefjord S,Chen R,Xiong Y,Hongbin G,Hanssondoi
10.1021/acs.jmedchem.8b00783subject
Has Abstractpub_date
2018-09-13 00:00:00pages
7796-7813issue
17eissn
0022-2623issn
1520-4804journal_volume
61pub_type
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