6wpe

Publication Abstract from PubMed

Indoleamine-2,3-dioxygenase-1 (IDO1) has emerged as an attractive target for cancer immunotherapy. An automated ligand identification system screen afforded the tetrahydroquinoline class of novel IDO1 inhibitors. Potency and pharmacokinetic (PK) were key issues with this class of compounds. Structure-based drug design and strategic incorporation of polarity enabled the rapid improvement on potency, solubility, and oxidative metabolic stability. Metabolite identification studies revealed that amide hydrolysis in the D-pocket was the key clearance mechanism for this class. Strategic survey of amide isosteres revealed that carbamates and N-pyrimidines, which maintained exquisite potencies, mitigated the amide hydrolysis issue and led to an improved rat PK profile. The lead compound 28 is a potent IDO1 inhibitor, with clean off-target profiles and the potential for quaque die dosing in humans.

Carbamate and N-Pyrimidine Mitigate Amide Hydrolysis: Structure-Based Drug Design of Tetrahydroquinoline IDO1 Inhibitors.,Li D, Deng Y, Achab A, Bharathan I, Hopkins BA, Yu W, Zhang H, Sanyal S, Pu Q, Zhou H, Liu K, Lim J, Fradera X, Lesburg CA, Lammens A, Martinot TA, Cohen RD, Doty AC, Ferguson H, Nickbarg EB, Cheng M, Spacciapoli P, Geda P, Song X, Smotrov N, Abeywickrema P, Andrews C, Chamberlin C, Mabrouk O, Curran P, Richards M, Saradjian P, Miller JR, Knemeyer I, Otte KM, Vincent S, Sciammetta N, Pasternak A, Bennett DJ, Han Y ACS Med Chem Lett. 2021 Feb 26;12(3):389-396. doi:, 10.1021/acsmedchemlett.0c00525. eCollection 2021 Mar 11. PMID:33738066^[2]

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