title: Cytotoxicity of modified indole alkaloids.
abstract: Indole alkaloids of the iboga series were structurally modified by incorporation of a 3,4-dimethoxybenzyl or -benzoyl unit so that they contained the N-O-O triangle required for antileukemic activity according to the triangulation hypothesis. The cytotoxicities of the modified alkaloids in the in vitro P-388 system were not significantly increased over the unmodified alkaloids, suggesting that the triangulation hypothesis does not apply in this series at least.
mesh_terms: D000470:Alkaloids / Q000138:chemical synthesis / Q000494:pharmacology*; D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000138:chemical synthesis; D066298:In Vitro Techniques; D007211:Indoles / Q000138:chemical synthesis / Q000494:pharmacology*; D007941:Leukemia P388 / Q000188:drug therapy; D013329:Structure-Activity Relationship
chemical_list: D000470:Alkaloids; D000972:Antineoplastic Agents, Phytogenic; D007211:Indoles