Slow Self-Activation Enhances The Potency of Viridin Prodrugs
作者:Joseph Blois、Hushan Yuan、Adam Smith、Michael E. Pacold、Ralph Weissleder、Lewis C. Cantley、Lee Josephson
DOI:10.1021/jm800374f
日期:2008.8.1
When the viridin wortmannin (Wm) is modified by reaction with certain nucleophiles at the C20 position, the compounds obtained exhibit an improved antiproliferative activity even though a covalent reaction between C20 and a lysine in the active site of PI3 kinase is essential to Wm's ability to inhibit this enzyme. Here we show that this improved potency results from an intramolecular attack by the