title: Antibacterial activity of some 3-(arylideneamino)-2-phenylquinazoline-4(3H)-ones: synthesis and preliminary QSAR studies.
abstract: Synthesis of ten 3-(arylideneamino)-2-phenylquinazoline-4(3H)-ones is reported. All the compounds contained a common phenyl group at the 2-position, while the substituents on the arylideneamino group were varied. The compounds were investigated for their antimicrobial activity against both Gram-positive (Staphylococcus aureus 6571 and Bacillus subtilis) and Gram-negative bacteria (Escherichia coli K12 and Shigella dysenteriae 6) using a turbidometric assay method. It was found that the incorporation of the 3-arylideneamino substituent enhanced the anti-bacterial activity of the quinazolone system. The preliminary QSAR studies were done using some computer derived property descriptors, calculated values of partition coefficients as well as usual Hammett's sigma constants and the substituent's molar refractivity.
authors.affiliation: Department of Chemistry, North Bengal University, Raja Rammohunpur, Siliguri, 734013, WB, India. ashisnanda@hotmail.com
authors.forename: Ashis Kumar
authors.initials: AK
authors.lastname: Nanda
authors.forename: Subarna
authors.initials: S
authors.lastname: Ganguli
authors.forename: Ranadhir
authors.initials: R
authors.lastname: Chakraborty
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D001412:Bacillus subtilis / Q000187:drug effects; D004926:Escherichia coli / Q000187:drug effects; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D021281:Quantitative Structure-Activity Relationship; D011799:Quinazolines / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D012762:Shigella dysenteriae / Q000187:drug effects; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: C516488:2-phenylquinazoline; D000900:Anti-Bacterial Agents; D011799:Quinazolines