title: Synthesis, identification and antiplatelet evaluation of 2-morpholino substituted benzoxazines.
abstract: A number of 2-morpholino substituted benzoxazines have been prepared in order to test their effectiveness against ADP and collagen induced platelet aggregation. The reaction of 2-thio-1,3-benzoxazines with morpholine has been generalised to enable the use of substituted benzoxazines. Two separate methods were used to prepare 7-O-2-morpholino substituted benzoxazines from 7-hydroxy-2-morpholino benzoxazines. Antiplatelet testing was carried out on 15 of the title compounds. 7-(2-Chloroethoxy)-8-methyl-2-morpholin-4-yl-4H-1,3-benzoxazin-4-one 15d and 7-[2-(4-methylpiperazin-1-yl)ethoxy]-8-methyl-2-morpholin-4-yl-4H-1,3-benzoxazin-4-one 16d showed potent activity against ADP and collagen induced platelet aggregation. The structures of the newly prepared compounds were confirmed by microanalysis as well as the analysis of IR, (1)H and (13)C NMR.
authors.affiliation: School of Pharmacy and Applied Science, La Trobe University, P.O. Box 199 Bendigo 3552, Australia. j.al-rawi@latrobe.edu.au
authors.forename: Kaylene M
authors.initials: KM
authors.lastname: Pritchard
authors.forename: Jasim
authors.initials: J
authors.lastname: Al-Rawi
authors.forename: Christopher
authors.initials: C
authors.lastname: Bradley
mesh_terms: D048588:Benzoxazines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D004353:Drug Evaluation, Preclinical; D009682:Magnetic Resonance Spectroscopy; D009025:Morpholines / Q000737:chemistry*; D010975:Platelet Aggregation Inhibitors / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D013055:Spectrophotometry, Infrared
chemical_list: D048588:Benzoxazines; D009025:Morpholines; D010975:Platelet Aggregation Inhibitors