Discovery of Novel, Potent Inhibitors of Hydroxy Acid Oxidase 1 (HAO1) Using DNA-Encoded Chemical Library Screening.
Lee, E.C.Y., McRiner, A.J., Georgiadis, K.E., Liu, J., Wang, Z., Ferguson, A.D., Levin, B., von Rechenberg, M., Hupp, C.D., Monteiro, M.I., Keefe, A.D., Olszewski, A., Eyermann, C.J., Centrella, P., Liu, Y., Arora, S., Cuozzo, J.W., Zhang, Y., Clark, M.A., Huguet, C., Kohlmann, A.(2021) J Med Chem 64: 6730-6744
- PubMed: 33955740 
- DOI: https://doi.org/10.1021/acs.jmedchem.0c02271
- Primary Citation of Related Structures:  
6W44, 6W45, 6W4C - PubMed Abstract: 
Inhibition of hydroxy acid oxidase 1 (HAO1) is a strategy to mitigate the accumulation of toxic oxalate that results from reduced activity of alanine-glyoxylate aminotransferase (AGXT) in primary hyperoxaluria 1 (PH1) patients. DNA-Encoded Chemical Library (DECL) screening provided two novel chemical series of potent HAO1 inhibitors, represented by compounds 3 - 6 . Compound 5 was further optimized via various structure-activity relationship (SAR) exploration methods to 29 , a compound with improved potency and absorption, distribution, metabolism, and excretion (ADME)/pharmacokinetic (PK) properties. Since carboxylic acid-containing compounds are often poorly permeable and have potential active glucuronide metabolites, we undertook a brief, initial exploration of acid replacements with the aim of identifying non-acid-containing HAO1 inhibitors. Structure-based drug design initiated with Compound 5 led to the identification of a nonacid inhibitor of HAO1, 31 , which has weaker potency and increased permeability.
Organizational Affiliation: 
X-Chem Inc., 100 Beaver Street, Waltham, Massachusetts 02453, United States.