Further alkaloids from strychnos longicaudata and strychnos ngouniensis

Further alkaloids from strychnos longicaudata and strychnos ngouniensis 3′,4′,5′,6′ Tetradehydrolongicaudatine Y, an anhydronium base from Strychnos usambarensis Occurrence of longicaudatine, a new type of bis(indole) base and dinor-C-alkaloid H in Strychnos species Occurrence of longicaudatine, a new type of bis(indole) base and dinor-C-alkaloid H in Strychnos species Structure of ngouniensine: an indole alkaloid of a new type from Strychnos ngouniensis Trinervine, a New Indole Alkaloid from Strychnos trinervis Alkaloids from roots of Strychnos matopensis Nouveaux Alcaloïdes des Racines du Strychnos icaja Strychnochrysine, a New Bisindole Alkaloid from the Roots of<i>Strychnos nux-vomica</i> Strychnochrysine, a New Bisindole Alkaloid from the Roots ofStrychnos nux-vomica