title: Aryl Extensions of Thienopyrimidinones as Fibroblast Growth Factor Receptor 1 Kinase Inhibitors.
abstract: Optimization of thienopyrimidinone derivatives as FGFR1 kinase inhibitors is being pursued. The present results confirm predictions of computational modeling that an aryl subtituent can be introduced at the 2-position in strucure 3. The substituent is anticipated to project deeper into the binding site and provide opportunities for enhanced activity and selectivity. The most potent analog reported here, 13, has a 4-hydroxyphenyl substituent and yields an IC(50) of 6 μM for inhibition of phosphorylation by FGFR1 kinase. It was also found that the western anisole-containing substituent in 3 can be replaced by a propionic acid group with no loss in potency and with potentially significant gains in pharmacologically relevant properties.
authors.affiliation: Department of Chemistry, Yale University, New Haven, Connecticut 06520.
authors.forename: Anil R
authors.initials: AR
authors.lastname: Ekkati
authors.forename: Valsan
authors.initials: V
authors.lastname: Madiyan
authors.forename: Krishna P
authors.initials: KP
authors.lastname: Ravindranathan
authors.forename: Jae
authors.initials: J
authors.lastname: H Bae
authors.forename: Joseph
authors.initials: J
authors.lastname: Schlessinger
authors.forename: William L
authors.initials: WL
authors.lastname: Jorgensen