title: Synthesis, cytotoxicity, QSAR, and intercalation study of new diindenopyridine derivatives.
abstract: Seven new derivatives of diindenopyridine were synthesized by Hantsch pyridine synthesis. Their biological activity to inhibit cell proliferation was assessed by MTT assay on seven cell lines. 11-(4-Fluoro-phenyl)-diindeno[1,2-b;2',1'-e]pyridine-10,12-dione and 11-(2-nitro-phenyl)-diindeno[1,2-b;2',1'-e]pyridine-10,12-dione were active on K-562 cell line with IC50 values of 79.66 and 78.2 microM, respectively. Effect of structural parameters on the cytotoxicity was evaluated by quantitative structure activity relationship (QSAR) analysis and a linear relationship was found between the -logIC15 of these compounds and their surface area and molar refractivity. To model the DNA-intercalator complex, force field molecular mechanic calculation was employed and the binding energy of the reaction between the intercalating agent and each reasonable double base pairs of DNA was calculated. It was found that these molecules could intercalate into the DNA. Also, it was observed that 11-(2-nitro-phenyl)-diindeno[1,2-b;2',1'-e]pyridine-10,12-dione, which showed the highest activity in K-562 cell line, produced the most negative binding energy with a moderate selectivity toward A-G/T-C double base pairs.
authors.affiliation: Medicinal and Natural Products Chemistry Research Centre, Shiraz University of Medical Sciences, PO Box 71345-1149 Shiraz, Iran. mirir@sums.ac.ir
authors.forename: Ramin
authors.initials: R
authors.lastname: Miri
authors.forename: Katayoun
authors.initials: K
authors.lastname: Javidnia
authors.forename: Bahram
authors.initials: B
authors.lastname: Hemmateenejad
authors.forename: Ali
authors.initials: A
authors.lastname: Azarpira
authors.forename: Zahra
authors.initials: Z
authors.lastname: Amirghofran
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D001681:Biological Assay; D045744:Cell Line, Tumor; D015195:Drug Design; D006131:Growth Inhibitors / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D006801:Humans; D007192:Indenes / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D007364:Intercalating Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D008968:Molecular Conformation; D015394:Molecular Structure; D011725:Pyridines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D021281:Quantitative Structure-Activity Relationship
chemical_list: D000970:Antineoplastic Agents; D006131:Growth Inhibitors; D007192:Indenes; D007364:Intercalating Agents; D011725:Pyridines