Friday, May 28, 2021

Identification of a Covalent Importin-5 Inhibitor, Goyazensolide, from a Collective Synthesis of Furanoheliangolides

Weilong Liu, Rémi Patouret, Sofia Barluenga, Michael Plank, Robbie Loewith, and Nicolas Winssinger

ACS Central Science 2021
DOI: 10.1021/acscentsci.1c00056

Sesquiterpenes are a rich source of covalent inhibitors with a long history in traditional medicine and include several important therapeutics and tool compounds. Herein, we report the total synthesis of 16 sesquiterpene lactones via a build/couple/pair strategy, including goyasensolide. Using an alkyne-tagged cellular probe and proteomics analysis, we discovered that goyazensolide selectively targets the oncoprotein importin-5 (IPO5) for covalent engagement. We further demonstrate that goyazensolide inhibits the translocation of RASAL-2, a cargo of IPO5, into the nucleus and perturbs the binding between IPO5 and two specific viral nuclear localization sequences.

Discovery and Characterization of a Novel Series of Chloropyrimidines as Covalent Inhibitors of the Kinase MSK1

Adrian Hall, Jan Abendroth, Madison J. Bolejack, Tom Ceska, Sylvie Dell’Aiera, Victoria Ellis, David Fox, Cyril François, Muigai M. Muruthi,...