نتایج جستجو برای: benzoxazinone

تعداد نتایج: 53  

Journal: :Analytical chemistry 2003
Lea Bonnington Ethel Eljarrat Miriam Guillamón Peter Eichhorn Andreu Taberner Damià Barceló

A new method for the quantification of benzoxazinone derivatives in extracts of wheat foliage and root samples using liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS-MS) is described. Using this method, the characterization, separation, and quantitative detection of a mixture of six naturally occurring 1,4-benzoxazin-3(4H)-one derivatives, including the hydroxam...

Journal: :the iranian journal of pharmaceutical research 0
ghadamali khodarahmi department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences, isfahan university of medical sciences, isfahan, iran. isfahan pharmaceutical sciences research center, isfahan, iran. elham jafari department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences, isfahan university of medical sciences, isfahan, iran. gholamhossein hakimelahi department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences, isfahan university of medical sciences, isfahan, iran. institute of chemistry, academia sinica, nankang, taipei, taiwan. daryoush abedi department of microbiology, faculty of pharmacy and pharmaceutical sciences, isfahan university of medical sciences, isfahan, iran. marzieh rahmani department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences, isfahan university of medical sciences, isfahan, iran. farshid hassanzadeh department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences, isfahan university of medical sciences, isfahan, iran. isfahan pharmaceutical sciences research center, isfahan, iran.

wide range of quinazolinone biological properties including: antibacterial, anticancer, and anti-inflammatory activities encouraged us to synthesis some fused quinazolinone derivatives. anthranilic acid was condensed with chloro acylchloride followed by dehydration to form the benzoxazinone intermediate; subsequent addition of an amine provided the fused quinazolinones. deoxyvasicinone which wa...

Journal: :Journal of the American Chemical Society 2006
Hiroto Yoshida Hiroyuki Fukushima Joji Ohshita Atsutaka Kunai

A zwitterion, generated from an aryne and an imine, has been demonstrated to serve as an excellent molecular scaffold for capturing CO2, which results in the straightforward formation of diverse benzoxazinones.

2011
Maher A. El-Hashash Khalid M. Darwish Sameh A. Rizk Fakhry A. El-Bassiouny

The behavior of 2-ethoxy-(4H)-3,1-benzoxazin-4-one (1) towards nitrogen nucleophiles, e.g. ethanolamine, aromatic amines (namely: p-toluidine, p-anisidine, p-hydroxyaniline, o-hydroxyaniline, o-bromoaniline, o-phenylenediamine, p-phenylenediamine, o-tolidinediamine) p-aminobenzoic acid, glucosamine hydrochloride, 2-aminonicotinic acid, 1-naphthalenesulfonic acid hydrazide, n-decanoic acid hydra...

Journal: :Egyptian Journal of Chemistry 2021

A convenient synthesis for 1,3,4-thiadiazolyl quinazolinone derivatives is described via facile cyclization of anthranilic acid with succinic anhydride and upon reaction glycine afforded 3-glycinyl derivative (2), which then treated thiosemicarbazide produced (3). Also, the key intermediate isothiocyanatobenzoazinone (13) synthesized checked triazolyl-(14), oxooxazolidinyl-(15) triazinanyl-(16a...

Ahmed S.A. Youssef Fatma A. El-Mariaha Heba E. Hashema Magdy M. Hemdanb

Utilization of benzoxazinone for synthesis quinazolinone derivatives with 3-heterocycle side chain. treatment of benzoxazinon 1 with cyano acetohydrazide or thionocarbohydrazide gave the quinazolinone derivatives 2 or 12. quinazolinone 2 has been utilized as synthon for new  pyridinone, oxazet, thiazole, thiazolidinone and quinazolinone derivatives. Thiosemicarbazide and thiosemicarbazone deriv...

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