Total synthesis of indole and dihydroindole alkaloids. II. Partial synthesis of some nine-membered ring intermediates from catharanthine

Total synthesis of indole and dihydroindole alkaloids. II. Partial synthesis of some nine-membered ring intermediates from catharanthine The iboga enigma: the chemistry and neuropharmacology of iboga alkaloids and related analogs A General Iridium-Catalyzed Reductive Dienamine Synthesis Allows a Five-Step Synthesis of Catharanthine via the Elusive Dehydrosecodine Catharanthus Alkaloids XXVI: Isolation of Cathanneine, a New Alkaloid from Catharanthus lanceus Indole alkaloids from Ervatamia orientalis. I. Isolation of alkaloids and structural identification of two dimers Five New Iboga Alkaloids from Tabernaemontana corymbosa Voatinggine and Tabertinggine, Pentacyclic Indole Alkaloids Derived from an Iboga Precursor via a Common Cleavamine-Type Intermediate Five New Iboga Alkaloids from <i>Tabernaemontana corymbosa</i> Indole alkaloids from Ervatamia orientalis. I. Isolation of alkaloids and structural identification of two dimers The Alkaloids of Tabernanthe iboga. Part VIII¹