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Updated: Aug 29, 2025

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Discovery of MDV6058 (PF-06952229), a selective and potent TGFβR1 inhibitor: Design, synthesis and optimization
Brahmam Pujala1, Sreekanth A Ramachandran1, Mukesh Sonawane1
1Integral BioSciences Pvt. Ltd., C-64, Hosiery Complex Phase II Extension, Noida, Uttar Pradesh 201306, India.
Abstract:
Compound 1 is a potent TGF-β receptor type-1 (TGFβR1 or ALK5) inhibitor but is metabolically unstable. A solvent-exposed part of this molecule was used to analogue and modulate cell activity, liver microsome stability and mouse pharmacokinetics. The evolution of SAR that led to the selection of 2 (MDV6058 / PF-06952229) as a preclinical lead compound is described.
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