Download MendeleyCarbamate and N -Pyrimidine Mitigate Amide Hydrolysis: Structure-Based Drug Design of Tetrahydroquinoline IDO1 Inhibitors.
Li, D., Deng, Y., Achab, A., Bharathan, I., Hopkins, B.A., Yu, W., Zhang, H., Sanyal, S., Pu, Q., Zhou, H., Liu, K., Lim, J., Fradera, X., Lesburg, C.A., Lammens, A., Martinot, T.A., Cohen, R.D., Doty, A.C., Ferguson, H., Nickbarg, E.B., 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, J.R., Knemeyer, I., Otte, K.M., Vincent, S., Sciammetta, N., Pasternak, A., Bennett, D.J., Han, Y.(2021) ACS Med Chem Lett 12: 389-396
- PubMed: 33738066
- DOI: https://doi.org/10.1021/acsmedchemlett.0c00525
- Primary Citation of Related Structures:
6WPE - PubMed Abstract:
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.
Organizational Affiliation:
Departments of Discovery Chemistry, Pharmacokinetics, Pharmacodynamics, and Drug Metabolism, Computational and Structural Chemistry, Discovery Process Chemistry, Discovery Pharmaceutical Science, and Quantitative Biosciences, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, Massachusetts 02115, United States.
