title: 5-substituted 2-bromoindolo[3,2-b]quinoxalines. A class of potential antitumor agents with cdc25 phosphatase inhibitory properties.
abstract: Several derivatives of 5-substituted 2-bromoindolo[3,2-b]quinoxaline were synthesized and characterized. The synthesized compounds were evaluated for their antitumor activity using the National Cancer Institute-in vitro-disease oriented antitumor screen and two biochemical mechanism-based screens (cdc2 kinase and cdc25 phosphatase). Compound 19 showed broad spectrum antitumor activity with full panel (MG-MID) GI50. TGI, and LC50 of 14.2, 31.6- and 66.2 microM, respectively. In addition it inhibited cdc2 kinase and cdc25 phosphatase with IC50's of 70 and 25 microM, respectively. Thus, compound 19 represents a model for compounds with potential antitumor activity and cdc25 phosphatase inhibitory properties.
authors.affiliation: Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.
authors.forename: A H
authors.initials: AH
authors.lastname: Abadi
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008297:Male; D010744:Phosphoric Monoester Hydrolases / Q000037:antagonists & inhibitors*; D011810:Quinoxalines / Q000138:chemical synthesis* / Q000737:chemistry / Q000627:therapeutic use*; D013329:Structure-Activity Relationship; D014407:Tumor Cells, Cultured / Q000187:drug effects*
chemical_list: D000970:Antineoplastic Agents; D011810:Quinoxalines; D010744:Phosphoric Monoester Hydrolases