113388-94-6Relevant articles and documents
Novel benzophenanthrene derivatives typed compound and the organic electroluminescence display device using same
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Paragraph 0099-0101, (2016/10/08)
The present invention refers to novel benzo [...] derivative composition is provided to improve quality of an organic light emitting including, more specifically a device [...] benzothiazole derivatives represented by formula 1 relates to compounds derivatives. Derivative compound [...] benzo of the present invention a low driving voltage and including a first electrode and a second electrode, having excellent pixel layer and luminous efficiency.. [Formula 1]
Substituted dihydronaphthalenes as efflux pump inhibitors of Staphylococcus aureus
Thota, Niranjan,Reddy, Mallepally V.,Kumar, Ashwani,Khan, Inshad A.,Sangwan, Payare L.,Kalia, Nitin P.,Koul, Jawahir L.,Koul, Surrinder
experimental part, p. 3607 - 3616 (2010/09/18)
A new series of 3-(substituted-3,4-dihydronaphthyl)-2-propenoic acid amides has been prepared through convergent synthetic strategies and tested in combination with ciprofloxacin against NorA overexpressing Staphylococcus aureus 1199B as test strain for potentiating of the drug activity. Out of 24 compounds evaluated, 12 compounds potentiated the activity of ciprofloxacin and resulted in 2-16 fold reduction in the MIC (4-0.5 μg/mL) of the drug. The failure of these efflux pump inhibitors (EPIs) to potentiate the activity of ciprofloxacin when tested against NorA knock out S. aureus SA-K1758 established their identity as NorA inhibitors. The structure of all these newly synthesised compounds was confirmed by spectral data. The present communication describes the synthesis, bioevaluation, structure activity relationship and mechanism of action of these EPIs. Design and synthesis of new series of 3-(substituted 3,4-dihydronaphthyl)- propenoic acid amides as efflux pump inhibitors has resulted in the MIC reduction of ciprofloxacin.
Synthesis of phenanthrenes and polycyclic heteroarenes by transition-metal catalyzed cycloisomerization reactions
Mamane, Victor,Hannen, Peter,Fuerstner, Alois
, p. 4556 - 4575 (2007/10/03)
Readily available biphenyl derivatives containing an alkyne unit at one of their ortho-positions are converted into substituted phenanthrenes on exposure to catalytic amounts of either PtCl2, AuCl, AuCl3, GaCl3 or InCl3 in toluene. This 6-endo-dig cyclization likely proceeds through initial π-complexation of the alkyne unit followed by interception of the resulting η2-metal species by the adjacent arene ring. The reaction is inherently modular, allowing for substantial structural variations and for the incorporation of substituents at any site of the phenanthrene product. Moreover, it is readily extended to the heterocyclic series as exemplified by the preparation of benzoindoles, benzocarbazoles, naphthothiophenes, as well as bridgehead nitrogen heterocycles such as pyrrolo[1,2-a]quinolines. Depending on the chosen catalyst, biaryls bearing halo-alkyne units can either be converted into the corresponding 10-halo-phenanthrenes or into the isomeric 9-halo-phenanthrenes; in the latter case, the concomitant 1,2-halide shift is best explained by assuming a metal vinylidene species as the reactive intermediate. The scope of this novel method for the preparation of polycyclic arenes is illustrated by the total synthesis of a series of polyoxygenated phenanthrenes that are close relatives of the anticancer agent combretastatin A-4, as well as by the total synthesis of the aporphine alkaloid O-methyl-dehydroisopiline and its naturally occurring symmetrical dimer.
