William J. Hoekstra, Ph.D.
Director, Medicinal Chemistry


Advancing Drug Development with Precision and Innovation.

Dr. Hoekstra has worked in pharmaceutical research & development as a medicinal chemist and intellectual property coordinator for more than 30 years. Prior to Piton, he served as Senior Vice President of Medicinal Chemistry at Viamet Pharmaceuticals Inc., where he co-invented the Phase 3 antifungal oteseconazole and the Phase 2B anticancer agent seviteronel. Dr. Hoekstra also held the position of Associate Director in Discovery Medicinal Chemistry at GlaxoSmithKline where he coordinated the introduction of a group of nuclear receptor modulator programs into the portfolio. Earlier in his career, he directed the discovery and lead optimization of several clinical new chemical entities such as the Phase 2B antithrombotic elarofiban in Johnson & Johnson's Department of Drug Discovery. Dr. Hoekstra has co-authored over 100 publications, holds 75 issued U.S. patents and has presented several invited lectures. He received his B.S. in Chemistry from Hope College and subsequently earned his Ph.D. in Organic Chemistry from Emory University.