title: Pyrazoline bearing benzimidazoles: search for anticancer agent.
abstract: 2-acetyl benzimidazole was allowed to react with substituted aromatic aldehydes to get desired intermediate chalcones (2a-g), the cyclocondensation of these intermediates with hydrazine hydrate and phenyl hydrazine in two separate reactions yielded pyrazoline derivatives (3a-g &4a-g respectively). Among the synthesize compounds, six compounds were granted NSC code and screened at National Cancer Institute (NCI), USA for anticancer activity at a single high dose (10(-5) M) in full NCI 60 cell panel. Among the selected compounds, (4f) 2-[5-(3,4-dimethoxyphenyl)-1-phenyl-4,5-dihydro-1H-3-pyrazolyl]-1H-benzimidazole (NSC 748326) was found to be the most active candidate of the series and selected for further evaluation at five dose level screening.
authors.affiliation: Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hamdard University, New Delhi-110062, India. yarmsy@rediffmail.com
authors.forename: Mohammad
authors.initials: M
authors.lastname: Shaharyar
authors.forename: M M
authors.initials: MM
authors.lastname: Abdullah
authors.forename: M A
authors.initials: MA
authors.lastname: Bakht
authors.forename: Jaseela
authors.initials: J
authors.lastname: Majeed
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry* / Q000494:pharmacology*; D001562:Benzimidazoles / Q000737:chemistry* / Q000494:pharmacology*; D045744:Cell Line, Tumor; D004305:Dose-Response Relationship, Drug; D055808:Drug Discovery; D006801:Humans; D011720:Pyrazoles / Q000737:chemistry*
chemical_list: D000970:Antineoplastic Agents; D001562:Benzimidazoles; D011720:Pyrazoles; C031280:pyrazole; C031000:benzimidazole