Route Exploration and Synthesis of The Reported Pyridone-Based PDI Inhibitor STK076545

Authors

Eric Greve, Marquette University
Sergey Lindeman, Marquette UniversityFollow
Christina Scartelli, Harvard Medical School
Lin Lin, Harvard Medical School
Robert Flaumenhaft, Harvard Medical School
Chris Dockendorff, Marquette UniversityFollow

Document Type

Article

Language

eng

Publication Date

2020

Publisher

Royal Society of Chemistry

Source Publication

Organic & Biomolecular Chemistry

Source ISSN

1477-0520

Abstract

The enzyme protein disulfide isomerase (PDI) is essential for the correct folding of proteins and the activation of certain cell surface receptors, and is a promising target for the treatment of cancer and thrombotic conditions. A previous high-throughput screen identified the commercial compound STK076545 as a promising PDI inhibitor. To confirm its activity and support further biological studies, a resynthesis was pursued of the reported β-keto-amide with an N-alkylated pyridone at the α-position. Numerous conventional approaches were complicated by undesired fragmentations or rearrangements. However, a successful 5-step synthetic route was achieved using an aldol reaction with an α-pyridone allyl ester as a key step. An X-ray crystal structure of the final compound confirmed that the reported structure of STK076545 was achieved, however its lack of PDI activity and inconsistent spectral data suggest that the commercial structure was misassigned.

Comments

Accepted version. Organic & Biomolecular Chemistry, Vol. 18, No. 34 (2020): 6665-6681. DOI. © 2020 Royal Society of Chemistry. Used with permission.

Recommended Citation

Greve, Eric; Lindeman, Sergey; Scartelli, Christina; Lin, Lin; Flaumenhaft, Robert; and Dockendorff, Chris, "Route Exploration and Synthesis of The Reported Pyridone-Based PDI Inhibitor STK076545" (2020). Chemistry Faculty Research and Publications. 1009.
https://epublications.marquette.edu/chem_fac/1009