Oxo-Derivatives of Kopsine- and Rhazinilam-Type Alkaloids from a North BorneoKopsia

Oxo-Derivatives of Kopsine- and Rhazinilam-Type Alkaloids from a North BorneoKopsia Alkaloids from Kopsia dasyrachis Rhazinal, a Formylrhazinilam Derivative from a Malayan Kopsia Rhazinilam and Quebrachamine Derivatives from Yunnan <i>Kopsia arborea</i> Rhazinilam and Quebrachamine Derivatives from Yunnan <i>Kopsia arborea</i> Indole Alkaloids from Kopsia teoi Kopsirachin, ein ungewöhnliches Alkaloid aus der Apocynaceae <i>Kopsia dasyrachis</i> Ridl. 189. Mitteilung über organische Naturstoffe Leuconoxine, Kopsinitarine, Kopsijasmine, and Kopsinone Derivatives from <i>Kopsia</i> Biologically Active Aspidofractinine, Rhazinilam, Akuammiline, and Vincorine Alkaloids from <i>Kopsia</i> Biologically Active Aspidofractinine, Rhazinilam, Akuammiline, and Vincorine Alkaloids from <i>Kopsia</i>