title: Synthesis of halogen derivatives of benzo[h]chromene and benzo[a]anthracene with promising antimicrobial activities.
abstract: The synthesis of novel 7-(4-halophenyl)-8,9-dihydro-7H-12-oxa-9,11-diaza-benzo[a]anthracene derivatives has been reported. The key intermediate 3-amino-9-chloro-1-(4-halophenyl)-1H-benzo[h]chromene-2-carbonitrile (3) was obtained by treating 4-halobenzylidenmalononitriles (1a-c) and ethyl 4-halobenzylidenmalonates (1d-f) with 4-chloro-1-naphthol (2) in ethanolic piperidine solution. Antimicrobial activity was shown for most of the synthesized compounds.
authors.affiliation: Chemistry Department, Faculty of science, Al-Azhar University, Nasr City, Cairo, Egypt.
authors.forename: Mostafa M
authors.initials: MM
authors.lastname: Khafagy
authors.forename: Ashraf H F
authors.initials: AH
authors.lastname: Abd el-Wahab
authors.forename: Fathy A
authors.initials: FA
authors.lastname: Eid
authors.forename: Ahmed M
authors.initials: AM
authors.lastname: el-Agrody
mesh_terms: D000873:Anthracenes / Q000138:chemical synthesis* / Q000494:pharmacology; D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D000935:Antifungal Agents / Q000138:chemical synthesis / Q000494:pharmacology; D001578:Benzopyrans / Q000138:chemical synthesis* / Q000494:pharmacology; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006094:Gram-Positive Bacteria / Q000187:drug effects; D006219:Halogens / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D003904:Mitosporic Fungi / Q000187:drug effects; D013055:Spectrophotometry, Infrared; D013329:Structure-Activity Relationship
chemical_list: D000873:Anthracenes; D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents; D000935:Antifungal Agents; D001578:Benzopyrans; D006219:Halogens