57076-91-2Relevant articles and documents
Unraveling relation between nonlinear absorption and structure of push pull ornamented anthracenyl chalcone derivatives
Chari, Rama,Jayabalan, J.,Saha, Amrita,Singh, Asha
, (2020/06/27)
Using green chemical method a series of fifteen systematically substituted 3-(9-substituted anthracen-10-yl)-1-(4-phenyl substituted)prop-2-en-1-one derivatives having high nonlinear absorption coefficient have been synthesized. The nonlinear absorption properties of these compounds were studied using nanosecond pulses at 532 nm wavelength. All 15 derivatives are found to show high nonlinear absorption in the range of 35–640 cm/GW. Among these the derivatives with –NO2 as one of the substitution group show higher nonlinear absorption. The origin of high nonlinear absorption with low linear absorption in the compounds has been attributed to two-step two-photon absorption process. We have shown that the energy bands of these compounds are distributed such that for excitation at 532 nm they have strong nonlinear absorption. These properties of the reported compounds make them a potential candidate for biological imaging and other applications which are based on nonlinear absorption.
Evaluation of sulphonamide derivatives acting as inhibitors of human carbonic anhydrase isoforms I, II and Mycobacterium tuberculosis β-class enzyme Rv3273
Wani, Tanvi V.,Bua, Silvia,Khude, Pravin S.,Chowdhary, Abdul H.,Supuran, Claudiu T.,Toraskar, Mrunmayee P.
, p. 962 - 971 (2018/05/29)
A series of novel sulphonamide derivatives was obtained from sulphanilamide which was N4-alkylated with ethyl bromoacetate followed by reaction with hydrazine hydrate. The hydrazide obtained was further reacted with various aromatic aldehydes. The novel sulphonamides were characterised by infrared, mass spectrometry, 1H- and 13C-NMR and purity was determined by high-performance liquid chromatography (HPLC). Human (h) carbonic anhydrase (CA, EC 4.2.1.1) isoforms hCA I and II and Mycobacterium tuberculosis β-CA encoded by the gene Rv3273 (mtCA 3) inhibition activity was investigated with the synthesised compounds which showed promising inhibition. The KIs were in the range of 54.6 nM–1.8 μM against hCA I, in the range of 32.1 nM–5.5 μM against hCA II and of 127 nM–2.12 μM against mtCA 3.
Synthesis and biological activity of some new pyrazoline and pyrimidine derivatives
Hassan, Seham Y.
experimental part, p. 1286 - 1298 (2012/03/26)
New series of pyrazoline 3-aryl-4,5-dihydro-1H-pyrazole-1-carbaldehydes (4-6), (aryl-4,5-dihydro-1H-pyrazol-1-yl)ethanones (9-11) and 3-aryl-4,5-dihydro-1H-pyrazoles (24 and 25) were synthesized by reacting chalcones (1-3) with hydrazine hydrate in either formic acid, acetic acid or ethanol, respectively. Also, new 6-arylpyrimidin-2-amine derivatives (32-34) were synthesized from the same chalcones. The structures of the newly synthesized compounds were established on the basis of IR, 1H NMR, 13C NMR, mass spectral data and elemental analyses. The compounds were evaluated for their antibacterial and antifungal activities. Three heterocycles showed relevant activity against C. albicans and some compounds also showed activity against E. coli.
