Abstract:
            This invention provides compounds of Formula I having the structure wherein R and R are each, independently, hydrogen, alkyl of 1-6 carbon atoms, halogen, perfluoroalkyl of 1-6 carbon atoms, cycloalkyl of 3-8 carbon atoms, thienyl, furyl, phenyl or phenyl substituted with trifluoromethyl, chloro, methoxy, or trifluoromethoxy; R and R are each, independently, hydrogen, carboxyl, hydroxyl, hydoxyalkyl of 1-6 carbon atoms, alkoxy of 1-6 carbon atoms, perfluoroalkoxy of 1-6 carbon atoms, alkanoyloxy of 2-7 carbon atoms, perfluoroalkanoyloxy of 2-7 carbon atoms, arylalkoxy of 7-15 carbon atoms, aryloxy of 6-12 carbon atoms, aroyloxy of 6-12 carbon atoms, aryloxycarbonyl of 7-13 carbon atoms, alkoxycarbonyl of 2-7 carbon atoms, perfluoroalkoxycarbonyl of 2-7 carbon atoms, alkyl of 1-6 carbon atoms, perfluoroalkyl of 1-6 carbon atoms, alkylamino of 1-6 carbon atoms, dialkylamino of 1-6 carbon atoms per alkyl group, tetrazolyl, mercapto, nitrile, nitro, amino, âNHSO CF , carbamoyl, carboxyaldehyde, halogen, acylamino, 3-hydroxy-cyclobut-3-ene-4-yl-1,2-dione, pyridyl, isoxazolyl, pyrimidyl or pyrimidyl substituted with mercapto, or tetronic acid; R is hydrogen, alkyl of 1-6 carbon atoms, perfluoroalkyl of 1-6 carbon atoms, naphthalenylmethyl, benzyl or benzyl substituted with halogen, R and R are each, independently, hydrogen, alkyl of 1-6 carbon atoms, or perfluoroalkyl of 1-6 carbon atoms, or R and R may be taken together as a diene unit having the structure âCH CHâCH CHâ; W is S or O, X is âNR CH â, âNR â, or O; R is hydrogen or alkyl; Y is carbonyl, methylene, ethyl, or âNHCH â; Z is phenyl, pyridyl, naphthyl, thienyl, furyl, pyrrolyl, pyrazolyl, isoxazolyl, or isothiazolyl; or a pharmaceutically acceptable salt thereof, which are useful in treating metabolic disorders related to insulin resistance or hyperglycemia.