title: Synthesis and antiproliferative activity of triazenoindazoles and triazenopyrazoles: a comparative study.
abstract: Several triazenoindazoles and triazenopyrazoles were prepared transforming the appropriate aminoindazoles and aminopyrazoles in the corresponding diazonium salts which were reacted with dimethylamine, diethylamine and pyrrolidine. All the triazenes were tested for their antiproliferative activity against K562, HL60, L1210 and MCF7 cell lines. The biological data showed that the benzocondensation plays a positive role on the antiproliferative activity. The (1)H-NMR spectra showed that the rotational barrier around the N(2)-N(3) bond in the triazene group can be influenced both by the position of this group in the indazole nucleus and by the substitution pattern in the benzene moiety.
authors.affiliation: Dipartimento di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, via Archirafi 32, 90123 Palermo, Italy. gdaidone@unipa.it
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Daidone
authors.forename: Demetrio
authors.initials: D
authors.lastname: Raffa
authors.forename: Benedetta
authors.initials: B
authors.lastname: Maggio
authors.forename: Maria
authors.initials: M
authors.lastname: Valeria Raimondi
authors.forename: Fabiana
authors.initials: F
authors.lastname: Plescia
authors.forename: Domenico
authors.initials: D
authors.lastname: Schillaci
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D002455:Cell Division / Q000187:drug effects; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D007191:Indazoles / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D020128:Inhibitory Concentration 50; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D011720:Pyrazoles / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D013329:Structure-Activity Relationship; D014226:Triazenes / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D014407:Tumor Cells, Cultured
chemical_list: D000970:Antineoplastic Agents; D007191:Indazoles; D011720:Pyrazoles; D014226:Triazenes