The present invention provides thiazole compounds of Formula Iwherein X1, X2, X3, X4, X5, R1, R2, R4, R5, R6, R7, and W, and ring AA, are as defined herein, or a stereoisomer, tautomer, pharmaceutically acceptable salt, prodrugs, or esters or solvate form thereof, wherein all of the variables are as defined herein. These compounds are inhibitors of platelet aggregation and thus can be used as medicaments for treating or preventing thromboembolic disorders.
