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Your search keyword '"Wythes, Martin"' showing total 2 results
Start Over Author "Wythes, Martin" Topic drug design
2 results on '"Wythes, Martin"'

1. Optimization of Orally Bioavailable Enhancer of Zeste Homolog 2 (EZH2) Inhibitors Using Ligand and Property-Based Design Strategies: Identification of Development Candidate (R)-5,8-Dichloro-7-(methoxy(oxetan-3-yl)methyl)-2-((4-methoxy-6-methyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-3,4-dihydroisoquinolin-1(2H)-one (PF-06821497).

Author

Kung PP, Bingham P, Brooun A, Collins M, Deng YL, Dinh D, Fan C, Gajiwala KS, Grantner R, Gukasyan HJ, Hu W, Huang B, Kania R, Kephart SE, Krivacic C, Kumpf RA, Khamphavong P, Kraus M, Liu W, Maegley KA, Nguyen L, Ren S, Richter D, Rollins RA, Sach N, Sharma S, Sherrill J, Spangler J, Stewart AE, Sutton S, Uryu S, Verhelle D, Wang H, Wang S, Wythes M, Xin S, Yamazaki S, Zhu H, Zhu J, Zehnder L, and Edwards M

Subjects
Administration, Oral, Biological Availability, Cell Line, Tumor, Humans, Isoquinolines administration & dosage, Isoquinolines chemistry, Models, Molecular, Molecular Conformation, Drug Design, Enhancer of Zeste Homolog 2 Protein antagonists & inhibitors, Isoquinolines pharmacokinetics, Isoquinolines pharmacology
Abstract

A new series of lactam-derived EZH2 inhibitors was designed via ligand-based and physicochemical-property-based strategies to address metabolic stability and thermodynamic solubility issues associated with previous lead compound 1. The new inhibitors incorporated an sp 3 hybridized carbon atom at the 7-position of the lactam moiety present in lead compound 1 as a replacement for a dimethylisoxazole group. This transformation enabled optimization of the physicochemical properties and potency compared to compound 1. Analysis of relationships between calculated log D (clogD) values and in vitro metabolic stability and permeability parameters identified a clogD range that afforded an increased probability of achieving favorable ADME data in a single molecule. Compound 23a exhibited the best overlap of potency and pharmaceutical properties as well as robust tumor growth inhibition in vivo and was therefore advanced as a development candidate (PF-06821497). A crystal structure of 23a in complex with the three-protein PRC2 complex enabled understanding of the key structural features required for optimal binding.

Published
2018
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2. Design and Synthesis of Pyridone-Containing 3,4-Dihydroisoquinoline-1(2H)-ones as a Novel Class of Enhancer of Zeste Homolog 2 (EZH2) Inhibitors.

Author

Kung PP, Rui E, Bergqvist S, Bingham P, Braganza J, Collins M, Cui M, Diehl W, Dinh D, Fan C, Fantin VR, Gukasyan HJ, Hu W, Huang B, Kephart S, Krivacic C, Kumpf RA, Li G, Maegley KA, McAlpine I, Nguyen L, Ninkovic S, Ornelas M, Ryskin M, Scales S, Sutton S, Tatlock J, Verhelle D, Wang F, Wells P, Wythes M, Yamazaki S, Yip B, Yu X, Zehnder L, Zhang WG, Rollins RA, and Edwards M

Subjects
Animals, Antineoplastic Agents therapeutic use, Cell Line, Tumor, Cyclization, Enhancer of Zeste Homolog 2 Protein metabolism, Female, Humans, Isoquinolines chemistry, Isoquinolines pharmacology, Isoquinolines therapeutic use, Lactams chemistry, Lactams pharmacology, Mice, Mice, SCID, Models, Molecular, Neoplasms drug therapy, Neoplasms metabolism, Pyridones therapeutic use, Antineoplastic Agents chemistry, Antineoplastic Agents pharmacology, Drug Design, Enhancer of Zeste Homolog 2 Protein antagonists & inhibitors, Pyridones chemistry, Pyridones pharmacology
Abstract

A new enhancer of zeste homolog 2 (EZH2) inhibitor series comprising a substituted phenyl ring joined to a dimethylpyridone moiety via an amide linkage has been designed. A preferential amide torsion that improved the binding properties of the compounds was identified for this series via computational analysis. Cyclization of the amide linker resulted in a six-membered lactam analogue, compound 18. This transformation significantly improved the ligand efficiency/potency of the cyclized compound relative to its acyclic analogue. Additional optimization of the lactam-containing EZH2 inhibitors focused on lipophilic efficiency (LipE) improvement, which provided compound 31. Compound 31 displayed improved LipE and on-target potency in both biochemical and cellular readouts relative to compound 18. Inhibitor 31 also displayed robust in vivo antitumor growth activity and dose-dependent de-repression of EZH2 target genes.

Published
2016
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