2-amino-pyridine intermediates for beta3-Adrenergic receptor agonists

摘要

The instant invention relates to intermediates of Formula II, <CHEM> wherein R<1>, R<2> and R<3> are as defined in the specification, and to processes for preparing such intermediates. This invention also relates to processes for preparing compounds of Formula III, <CHEM> and enantiomers thereof, wherein R<2>, R<3> and R<4> are as defined in the specification. Compounds of Formula II and Formula III are intermediates in the preparation of a potent beta 3 adrenergic receptor agonist. The instant invention also relates to processes for preparing the beta 3 adrenergic receptor agonist using the compounds of Formula II and Formula III.