Triclisia gilletii (DeWild.) Staner is a woody climber indigenous to Ghana and other parts of West Africa. Extracts of the plant have been used medicinally and as an arrow poison. Chromatography of an extract of the leaves afforded the new bisbenzylisoquinoline dibenzo-p-dioxin alkaloids gilletine and isogilletine-N-oxide as well as two other bisbenzylisoquinoline alkaloids, obamegine and stebisimine. © 1981, American Chemical Society. All rights reserved.