The present invention is directed to compounds of Formulas (I, IIa and IIb):
The invention also relates to pharmaceutical compositions comprising compounds of Formulas (I, IIa and IIb). Methods of making and using the compounds of Formulas (I, IIa and IIb) are also within the scope of the invention.
The present invention is directed to compounds of Formulas (I, IIa and IIb):
The invention also relates to pharmaceutical compositions comprising compounds of Formulas (I, IIa and IIb). Methods of making and using the compounds of Formulas (I, IIa and IIb) are also within the scope of the invention.
Kineticvs. thermodynamiccontrol and steric hindrance are factors that determine the regioselectivity of the Pd(O)-catalyzed allylation of ambident heterocycles of the 3-hydroxyisoxazole, 5-isoxazolone and 5-pyrazolone series.