title: Physicochemical and biological characterization of novel macrocycles derived from o-phthalaldehyde.
abstract: A series of novel macrocyclic compounds were synthesized by the condensation of o-phthalaldehyde with aromatic amino alcohols followed by treatment with 1,2-dibromoethane or 1,3-dibromopropane in non-template method. The structural features of the isolated macrocycles have been determined from the microanalytical, IR, (1)H, (13)C NMR and mass spectral studies. Antimicrobial activities of these macrocyclic compounds were tested against the gram-positive (Bacillus subtilis, Staphylococcus aureus) and gram-negative (Escherichia coli, Klebsiella pneumoniae) bacteria and found to exhibit potential antibacterial activity. The macrocycles were also tested in vitro to evaluate their activity against fungi, namely, Aspergillus flavus (A. flavus) and Fusarium species.
authors.affiliation: Department of Chemistry, National Dong Hwa University, Hualien, Taiwan.
authors.forename: P Muralidhar
authors.initials: PM
authors.lastname: Reddy
authors.forename: Yen-Peng
authors.initials: YP
authors.lastname: Ho
authors.forename: Kanne
authors.initials: K
authors.lastname: Shanker
authors.forename: Rondla
authors.initials: R
authors.lastname: Rohini
authors.forename: Vadde
authors.initials: V
authors.lastname: Ravinder
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D000935:Antifungal Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D001231:Aspergillus flavus / Q000187:drug effects; D001412:Bacillus subtilis / Q000187:drug effects; D002627:Chemistry, Physical; D015195:Drug Design; D004926:Escherichia coli / Q000187:drug effects; D005670:Fusarium / Q000187:drug effects; D007711:Klebsiella pneumoniae / Q000187:drug effects; D047028:Macrocyclic Compounds / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D013211:Staphylococcus aureus / Q000187:drug effects; D013237:Stereoisomerism; D009764:o-Phthalaldehyde / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D047028:Macrocyclic Compounds; D009764:o-Phthalaldehyde