2. Academic Validation
  3. Imidazolone as an Amide Bioisostere in the Development of β-1,3- N-Acetylglucosaminyltransferase 2 (B3GNT2) Inhibitors

Imidazolone as an Amide Bioisostere in the Development of β-1,3- N-Acetylglucosaminyltransferase 2 (B3GNT2) Inhibitors

  • J Med Chem. 2023 Dec 14;66(23):16120-16140. doi: 10.1021/acs.jmedchem.3c01517.
Jeffrey J Jackson 1,  Aaron C Siegmund 1,  Wen-Ju Bai 1,  Anthony B Reed 1,  Adam B Birkholz 2,  Iain D G Campuzano 2,  Amandine Créquer-Grandhomme 3,  Ruozhen Hu 3,  Rucha V Modak 3,  Athena Sudom 1,  Noelle Javier 4,  Christiana Sanders 5,  Mei-Chu Lo 4,  Fang Xie 6,  Victor J Cee 1,  Paolo Manzanillo 3,  John G Allen 1
Affiliations

Affiliations

  • 1 Small Molecule Therapeutic Discovery, Amgen Research, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, United States.
  • 2 Center for Research Acceleration by Digital Innovation, Amgen Research, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, United States.
  • 3 Inflammation, Amgen Research, Amgen Inc., 750 Gateway Blvd, Ste 100, South San Francisco, California 94080, United States.
  • 4 Lead Discovery & Characterization, Amgen Research, Amgen Inc., 750 Gateway Blvd, Ste 100, South San Francisco, California 94080, United States.
  • 5 Lead Discovery & Characterization, Amgen Research, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, United States.
  • 6 Pharmacokinetics & Drug Metabolism, Amgen Research, Amgen Inc., 750 Gateway Blvd, Ste 100, South San Francisco, California 94080, United States.
PMID: 37988652 DOI: 10.1021/acs.jmedchem.3c01517
Abstract

B3GNT2 is responsible for elongation of cell surface long-chain polylactosamine, which influences the regulation of the immune response, making it an attractive target for immunomodulation. In the development of amide containing B3GNT2 inhibitors guided by structure-based drug design, imidazolones were found to successfully serve as amide bioisosteres. This novel imidazolone isosteric strategy alleviated torsional strain of the amide bond on binding to B3GNT2 and improved potency, isoform selectivity, as well as certain physicochemical and pharmacokinetic properties. Herein, we present the synthesis, SAR, X-ray cocrystal structures, and in vivo PK properties of imidazol-4-ones in the context of B3GNT2 inhibition.

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