Synthesis of (+)-Vitepyrroloid A and (+)-Vitepyrroloid B by Late-Stage Ni-Catalyzed C(sp2)-C(sp3) Cross-Electrophile Coupling.

A concise and scalable five-step synthesis of vitepyrroloids A and B, two cytotoxic labdane diterpenoid alkaloids from Vitex trifolia, is reported. The presented approach features a Ni-catalyzed cross-electrophile coupling between a (+)-sclareolide-derived alkyl iodide and 3-bromo-2-cyanopyrrole.