10‘-Hydroxyusambarensine, a New Antimalarial Bisindole Alkaloid from the Roots of Strychnos usambarensis

10‘-Hydroxyusambarensine, a New Antimalarial Bisindole Alkaloid from the Roots of <i>Strychnos </i><i>u</i><i>sambarensis</i> 10‘-Hydroxyusambarensine, a New Antimalarial Bisindole Alkaloid from the Roots of <i>Strychnos </i><i>u</i><i>sambarensis</i> 17-O-Acetyl,10-hydroxycorynantheol, a Selective Antiplasmodial Alkaloid Isolated fromStrychnos usambarensisLeaves 10-Hydroxy-Nb-methyl-corynantheol, a new quaternary alkaloid from the stem bark of Strychnos usambarensis Qualitative and quantitative evaluation of bisindole usambarane alkaloids inStrychnos usambarensis roots by high performance liquid chromatography-diode-array 3′,4′,5′,6′ Tetradehydrolongicaudatine Y, an anhydronium base from Strychnos usambarensis CONTRIBUTION A L'ETUDE DES ALCALOIDES DU<i>STRYCHNOS USAMBARENSIS</i>¹ Antiplasmodial Activity of Alkaloids from Various <i>Strychnos</i> Species Antiplasmodial Activity of Alkaloids from Various <i>Strychnos</i> Species Strychnobaillonine, an Unsymmetrical Bisindole Alkaloid with an Unprecedented Skeleton from<i>Strychnos icaja</i>Roots