Solid-Phase Synthesis of Diverse Macrocycles by Regiospecific 2-Pyridone Formation: Scope and Applications.

This study introduces a novel solid-phase macrocyclization method generating 2-pyridone rings. This method relies on the intramolecular condensation between secondary and tertiary dimethoxy-propionic amide units. This selective reaction leads to the formation of a single well-defined regioisomer. The method demonstrates remarkable efficiency in producing diverse peptidic and nonpeptidic bioactive targets, paving the way for the development of innovative macrocycle libraries featuring the 2-pyridone unit.