Oxidative Transformations of Indole Alkaloids. II. The Preparation of Oxindoles from cis-DE-Yohimbinoid Alkaloids. The Partial Synthesis of Carapanaubine

<b>Oxidative Transformations of Indole Alkaloids. II. The Preparation of Oxindoles from <b>cis</b>-DE-Yohimbinoid Alkaloids. The Partial Synthesis of Carapanaubine</b> The product of reserpine autoxidation ALSTONIA ALKALOIDS. I. DEGRADATION OF ALSTONINE TO β-CARBOLINE BASES AND THE REDUCTION OF TETRAHYDROALSTONINE WITH SODIUM AND BUTYL ALCOHOL Synthesis of 1-Hydroxyyohimbine and Its Novel Skeletal Rearrangement Reaction into Oxindole Derivatives Structure des caboxines: Alcaloïdes oxindoliques du Cabucala fasciculata Neisoposinine: A New Oxindole Alkaloid from Neisoperma oppositifolia [Apocynaceae] Six new indole alkaloids from Gelsemium sempervirens Ait. f. Perhydroisoquinoline Synthesis: C(20)-Substituted Analogs of Yohimbine-Type Alkaloids Rauwolfia Alkaloids. XVII. 3-Epi-α-yohimbine Six new indole alkaloids from Gelsemium sempervirens Ait. f.