Results 121 to 130 of about 601 (168)
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Acta Crystallographica Section C Crystal Structure Communications, 1995
The molecular packing arrangement in C 13 H 9 NO is characterized by two major interaction types. The first comprises N−H...O hydrogen bonds between glide-related molecules, with an N...O distance of 2.782 (3) A, such that each molecule is hydrogen bonded to two adjacent molecules. The second consists of π−π interactions between molecules stacked along
G. D. Potts, W. Jones
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The molecular packing arrangement in C 13 H 9 NO is characterized by two major interaction types. The first comprises N−H...O hydrogen bonds between glide-related molecules, with an N...O distance of 2.782 (3) A, such that each molecule is hydrogen bonded to two adjacent molecules. The second consists of π−π interactions between molecules stacked along
G. D. Potts, W. Jones
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The biogenesis of acridone alkaloids
Journal of the Chemical Society D: Chemical Communications, 1970The similarity in substitution pattern between xanthones and acridone alkaloids and the analogous cyclisation reactions observed for 2-hydroxy- and 2-amino-benzophenones suggest that related biogenetic pathways may be involved.
I. H. Bowen, P. Gupta, J. R. Lewis
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2017
There have been substantial developments in the chemistry and biology of the acridone alkaloids in the 16years since the topic was last reviewed in this series of monographs (2000). The present survey covers the literature from mid-1999 to 2016. A brief overview of the biosynthesis of acridone alkaloids is followed by details of the occurrence and ...
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There have been substantial developments in the chemistry and biology of the acridone alkaloids in the 16years since the topic was last reviewed in this series of monographs (2000). The present survey covers the literature from mid-1999 to 2016. A brief overview of the biosynthesis of acridone alkaloids is followed by details of the occurrence and ...
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Vibrational properties of the free and adsorbed acridone
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2004Theoretical density functional theory (DFT) calculation, ab initio and experimental vibrational characterization of acridone were performed. The computed vibrational modes agree well with the experimental values of the related crystal structure. Surface enhanced Raman scattering (SERS) of acridone in silver colloids with different surface potential ...
S, Cîntã Pînzaru, C, Morari
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Quinoline, quinazoline, and acridone alkaloids
Natural Product Reports, 1984The most interesting new alkaloids are the acridones that contain tropone rings, which have been isolated from Citrus species. Emphasis this year is again on synthesis, with highlights including the first use of copper acetylides in the synthesis of furoquinolones, the synthesis of the (1,l -dimethylallyl)quinolinone buchapine, and developments in the ...
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Australian Journal of Chemistry, 1967
The mass spectra of 34 acridones have been determined and interpreted with the aid of both high-resolution measurements and deuterium labelling studies. The spectra contain pronounced molecular ions and are free of skeletal rearrangement fragments. The fragmentation patterns are dependent on the nature and position of substituents, and therefore mass ...
JH Bowie +3 more
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The mass spectra of 34 acridones have been determined and interpreted with the aid of both high-resolution measurements and deuterium labelling studies. The spectra contain pronounced molecular ions and are free of skeletal rearrangement fragments. The fragmentation patterns are dependent on the nature and position of substituents, and therefore mass ...
JH Bowie +3 more
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Journal of Medicinal Chemistry, 1992
Glyfoline (4, 1,6-dihydroxy-10-methyl-2,3,4,5-tetramethoxyacridin-9-one) and its congeners were synthesized for evaluation of their cytotoxicity. A detailed structure-activity relationships (SAR) of these acridone derivatives were also studied. To study the SAR of glyfoline analogues, substituent(s) at C-1 and C-6 and at the heterocyclic nitrogen of ...
T L, Su +4 more
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Glyfoline (4, 1,6-dihydroxy-10-methyl-2,3,4,5-tetramethoxyacridin-9-one) and its congeners were synthesized for evaluation of their cytotoxicity. A detailed structure-activity relationships (SAR) of these acridone derivatives were also studied. To study the SAR of glyfoline analogues, substituent(s) at C-1 and C-6 and at the heterocyclic nitrogen of ...
T L, Su +4 more
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Acridone Heterocycles as Fluorescent Sensors for Anions
HETEROCYCLES, 2006AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
M. Teresa Blazquez +8 more
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Reactions in the Acridone‐Fields.
Helvetica Chimica Acta, 1976Abstract1‐Chlor‐ und 1,7‐Dichlor‐4‐nitro‐acridon wurden mit einigen Phenolen und Bisphenolen zu Farbstoffen umgesetzt, die Polyvinylchlorid grünlichgelb färben. Im Xenotest 800 Std. belichtet, zeigten die einfachen Acridone IX bis XIII eine ungewöhnlich hohe Lichtechtheit; sie sind aber migrationsunecht.
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Equilibrium NH acidities of acridan, phenanthridone, 9-acridone, and substituted 9-acridones
Chemistry of Heterocyclic Compounds, 1982The equilibrium NH acidities of acridan, phenanthridone, 9-acridone, and 2-substituted 9-acridones (substituents: Me2N, MeO, F, Br, I, and NO2) were measured by transmetallation in dimethyl sulfoxide (DMSO). The role of conjugation and the aromatic character of the heterocyclic ring in stabilization of the anions is discussed.
N. N. Voinovskaya +6 more
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