Progress toward the syntheses of (+)-GB 13, (+)-himgaline, and himandridine. New insights into intramolecular imine/Enamine aldol cyclizations

Article abstract of DOI:10.1021/ja3001776

A full account of our total synthesis of the galbulimima alkaloids GB 13 and himgaline is provided. Using a strategy adapted from the proposed biosynthesis of the GB alkaloid family, a linear precursor underwent successive intramolecular Diels-Alder, Mich