title: Synthesis and antitumor activities of 5-methyl-1- and 2-[[2-dimethylaminoethyl]amino]-aza-thiopyranoindazoles.
abstract: The synthesis of 1- and 2-substituted aza-benzothiopyranoindazoles has been accomplished. The comparisons of the in vitro antitumor activities of the 2-substituted analogues with the benzothiopyranoindazole chemotypes indicate that the positioning of the nitrogen atom at C-9 (9-aza analogue 4d) leads to a substrate with potent antitumor activity. The 1-substituted aza-benzothiopyranoindazoles, in comparison with the corresponding 2-substituted analogues, exhibit a much lower potency.
authors.affiliation: Department of Chemistry, University of Vermont, Burlington 05405, USA. pkrapcho@zoo.uvm.edu
authors.forename: A P
authors.initials: AP
authors.lastname: Krapcho
authors.forename: S N
authors.initials: SN
authors.lastname: Haydar
authors.forename: S
authors.initials: S
authors.lastname: Truong-Chiott
authors.forename: M P
authors.initials: MP
authors.lastname: Hacker
authors.forename: E
authors.initials: E
authors.lastname: Menta
authors.forename: G
authors.initials: G
authors.lastname: Beggiolin
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D007191:Indazoles / Q000138:chemical synthesis* / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D013329:Structure-Activity Relationship; D014407:Tumor Cells, Cultured
chemical_list: D000970:Antineoplastic Agents; D007191:Indazoles