title: Synthesis of some new quinoxalines and 1,2,4-triazolo[4,3-a]-quinoxalines for evaluation of in vitro antitumor and antimicrobial activities.
abstract: Two novel series of quinoxalines derived from 3-phenylquinoxalin-2(1H)-one and 2-hydrazino-3-phenylquinoxaline, namely 1-substituted-3-phenylquinoxaline-2(1H)-ones, 2a-c, 3a-d, and 4; 2-(3-oxo-3,3a,4,5,6,7-hexahydroindazol-2-yl)-3-phenylquinoxaline 6; N- cyclopentylidene or benzylidene-N'-(3-phenylquinoxaline-2-yl)hydrazines, 7 and 18; 1-substituted-4-phenyl-1,2,4-triazolo[4,3-a]quinoxalines, 9, 10, 12, 13, 14, and 16 have been synthesized in order to evaluate their antitumor and antimicrobial activities. Preliminary screening at NCI showed that compounds 2b, 2c, 3b, 3c, and 9 exhibited a moderate to strong growth inhibition activity on various tumor panel cell lines between 10(-6) to 10(-5) molar concentrations. Compound 3b was the most active with a broad spectrum of activity. Compound 3c showed selectivity towards CNS-cancer SF-639, leukemia CCRF-CEM, and melanoma SK-MEL-5 (GI(50) = 4.03, 6.46, and 4.17 microM, respectively). On the other hand, the in vitro microbiological data revealed that the prepared compounds showed mild antimicrobial activity.
authors.affiliation: Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt. soadhawash@yahoo.com
authors.forename: Soad A M
authors.initials: SA
authors.lastname: El-Hawash
authors.forename: Nargues S
authors.initials: NS
authors.lastname: Habib
authors.forename: Mervat A
authors.initials: MA
authors.lastname: Kassem
mesh_terms: D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D000970:Antineoplastic Agents / Q000494:pharmacology; D002176:Candida albicans / Q000187:drug effects / Q000254:growth & development; D002439:Cefotaxime / Q000494:pharmacology; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D004126:Dimethylformamide / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D006801:Humans; D008826:Microbial Sensitivity Tests / Q000379:methods; D015394:Molecular Structure; D009761:Nystatin / Q000494:pharmacology; D011810:Quinoxalines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D013211:Staphylococcus aureus / Q000187:drug effects / Q000254:growth & development; D013329:Structure-Activity Relationship; D014230:Triazoles / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology
chemical_list: C469661:1,2,4-triazolo(4,3-a)quinoxaline; D000890:Anti-Infective Agents; D000970:Antineoplastic Agents; D011810:Quinoxalines; D014230:Triazoles; D009761:Nystatin; D004126:Dimethylformamide; D002439:Cefotaxime