Danuphylline, a novel pentacyclic indole from Kopsia

Danuphylline, a novel pentacyclic indole from Kopsia Indole and monoterpene alkaloids from the leaves of Kopsia dasyrachis Kopsine and Danuphylline Alkaloids from Kopsia. Biomimetic Partial Synthesis of Danuphylline B Three New Indole Alkaloids from the Leaves of <i>Kopsia officinalis</i> Three New Indole Alkaloids from the Leaves of Kopsia officinalis Kopsifolines A–F: a New Structural Class of Monoterpenoid Indole Alkaloids from Kopsia Kopsifolines A, B, and C, indole alkaloids with a novel hexacyclic carbon skeleton from Kopsia Four heptacyclic indoles from Kopsia teoi Indole Alkaloids from the Aerial Parts of Kopsia fruticosa New Indole Alkaloids from Kopsia. Alkaloid Variation in Kopsia singapurensis