title: Antitumor in vitro evaluation of certain derivatives of pyrido-1,2-thiazines.
abstract: We report an antitumor in vitro evaluation of a small series of 3-phenyl(methyl)pyrazolo[4, 3-c] pyrido [3,2-e]-1,2-thiazines 4 and the related 3-benzoyl (acetyl)-4-hydroxypyrido [3,2-e]-1,2-thiazines 5 bearing a 3-(4-arylpiperazin-1-yl) propyl group at the nitrogen atom of the thiazine ring. Five of the seven pyridothiazines 5 tested and one compound from the series 4 (five compounds) exhibited in cell experiments a significant antitumor activity against several types of human tumor cells [GI50 values 3-54 mM/L]. The action of the most active compound 5f against some leukemia and melanoma cell lines was observed at sub mM/L doses at the GI50 level.
authors.affiliation: Department of Chemistry of Drugs, Wrocław Medical University, 1 Tamka Str., 50-137 Wrocław, Poland. malinka@bf.uni.wroc.pl
authors.forename: Wiesław
authors.initials: W
authors.lastname: Malinka
authors.forename: Mirela
authors.initials: M
authors.lastname: Kaczmarz
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Redzicka
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D045744:Cell Line, Tumor; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D011725:Pyridines / Q000138:chemical synthesis* / Q000494:pharmacology*; D013843:Thiazines / Q000138:chemical synthesis* / Q000494:pharmacology*
chemical_list: D000970:Antineoplastic Agents; D011725:Pyridines; D013843:Thiazines