title: Synthesis and cytotoxic activity of (E)-1-(2-nitrovinyl) and 1-[N-(tert-butylformiminyl)]-substituted 1,4-dihydropyridines and 2-pyridones.
abstract: 1-(2-Nitrovinyl) derivatives of nuclear substituted 1,4-dihydropyridines (7a-c), and 1-(N-tert-butyl-formiminyl) derivatives of 1,4-dihydropyridines (9a-c) or 2-pyridones (11a-c) were synthesized for evaluation as cytotoxic agents (see Table I for structures). The in vitro cytotoxic activities, determined in the L1210 assay, indicated that the 4-substituent on a 1,4-dihydropyridine ring system was a determinant of activity in both the 1-(2-nitrovinyl) (7) and 1-(N-tert-butylformiminyl) (9) series, the relative activity order being n-Bu > Ph > Me. In the 1-(N-tert-butylformiminyl) series, the 1,4-dihydropyridine derivatives (9) were generally more cytotoxic than the 2-pyridone derivatives (11). The most active compound was 1-(N-tert-butylformiminyl)-3-(4,4-dimethyloxazolin-2-yl)-4-n -butyl-1,4- dihydropyridine (9b), but it was 2-3 log units less active than the reference standard melphalan.
authors.affiliation: Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Canada.
authors.forename: C
authors.initials: C
authors.lastname: Im
authors.forename: E E
authors.initials: EE
authors.lastname: Knaus
authors.forename: R P
authors.initials: RP
authors.lastname: Thuynsma
authors.forename: T M
authors.initials: TM
authors.lastname: Allen
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D004095:Dihydropyridines / Q000138:chemical synthesis* / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D007939:Leukemia L1210 / Q000188:drug therapy; D051379:Mice; D011728:Pyridones / Q000138:chemical synthesis* / Q000494:pharmacology; D013329:Structure-Activity Relationship
chemical_list: D000970:Antineoplastic Agents; D004095:Dihydropyridines; D011728:Pyridones