title: Studies on quinones. Part 44: Novel angucyclinone N-heterocyclic analogues endowed with antitumoral activity.
abstract: In the search for new potentially anticancer drugs, series of angucyclinone aza-analogues containing pyridine and pyridopyridazine rings have been designed and synthesized by a highly efficient sequence involving a one-pot step for the synthesis of tricyclic quinone intermediate and highly regiocontrolled cycloaddition reactions with polarized 1,3-dienes. The new N-heterocyclic angular quinones were evaluated in vitro on normal human fibroblasts and on a panel of four distinct human cancer cell lines. All tested compounds showed high to moderate antitumor activity. Among the compounds, those with one and two pyridine moieties fused to the quinone system have shown the best effect. Structure-activity relationships established the main structural requirement for the activity of the new potential anticancer drugs.
authors.affiliation: Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 306, Santiago, Chile. jvalderr@uc.cl
authors.forename: Jaime A
authors.initials: JA
authors.lastname: Valderrama
authors.forename: Pamela
authors.initials: P
authors.lastname: Colonelli
authors.forename: David
authors.initials: D
authors.lastname: Vásquez
authors.forename: M Florencia
authors.initials: MF
authors.lastname: González
authors.forename: Jaime A
authors.initials: JA
authors.lastname: Rodríguez
authors.forename: Cristina
authors.initials: C
authors.lastname: Theoduloz
mesh_terms: D000880:Anthraquinones / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D015195:Drug Design; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D020128:Inhibitory Concentration 50; D014407:Tumor Cells, Cultured
chemical_list: D000880:Anthraquinones; D000970:Antineoplastic Agents; C510997:angucyclinone