title: Synthesis and anti-tumor activities of a novel series of tricyclic 1-anilino-5H-pyridazino[4,5-b]indoles.
abstract: A novel series of 1-anilino-5H-pyridazino[4,5-b]indoles was designed and synthesized in order to find novel potent anti-tumor compounds. Their structures were confirmed by MS, (1)H-NMR, and elemental analysis. All compounds were screened for their cytotoxic activity against two human cancer cell lines (Bel-7420, HT-1080). The compounds 8, 9, and 17 showed 50% growth inhibitory activity in low micromolar concentration (IC(50 )= 7.7 approximately 12.8 microM). Among them, compound 17 displayed the most potent anti-tumor activity with IC(50) values of 8.2 microM and 7.9 microM against Bel-7402 and HT-1080, respectively.
authors.affiliation: School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, P.R. China.
authors.forename: Rong Dong
authors.initials: RD
authors.lastname: Li
authors.forename: Xin
authors.initials: X
authors.lastname: Zhai
authors.forename: Yan Fang
authors.initials: YF
authors.lastname: Zhao
authors.forename: Shuang
authors.initials: S
authors.lastname: Yu
authors.forename: Ping
authors.initials: P
authors.lastname: Gong
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D045744:Cell Line, Tumor; D006801:Humans; D007211:Indoles / Q000138:chemical synthesis* / Q000494:pharmacology; D011724:Pyridazines / Q000138:chemical synthesis*; D013329:Structure-Activity Relationship
chemical_list: D000970:Antineoplastic Agents; D007211:Indoles; D011724:Pyridazines