title: N7-Substituted 7-aminoactinomycin D analogues. Synthesis and biological properties.
abstract: A series of N7-substituted 7-aminoactinomycin D analogues with alkyl, aralkyl, and heteroaralkyl substituents was synthesized and their biological properties were studied. All of these analogues proved to be 22- to 28-fold less toxic than actinomycin D when tested against human lymphoblastic leukemia cells (CCRF-CEM) in vitro. Against the P388 mouse leukemia in vivo, most of the analogues had activity comparable to actinomycin D and one was significantly more active. The results show that substitutions of this kind do not interfere with the antitumor activity of actinomycin D and may be useful for the design of modified actinomycin D analogues with greater selectivity.
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D003609:Dactinomycin / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000627:therapeutic use; D006801:Humans; D007942:Leukemia, Experimental / Q000188:drug therapy; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D051379:Mice; D009904:Optical Rotation; D013053:Spectrophotometry
chemical_list: D003609:Dactinomycin