نتایج جستجو برای: 134 thiadiazole
تعداد نتایج: 14006 فیلتر نتایج به سال:
In this study, a series of novel compounds based on 5-(5-nitrothiophene-2-yl)-1,3,4-thiadiazole possessing (het)aryl thio pendant at C-2 position of thiadiazole ring is developed and evaluated as antileishmanial agents using MTT colorimetric assay. 10 New compounds containing aryl and hetero aryl derivatives, started from thiophene-2-carbaldehyde in five steps, were synthesized in good to excel...
In the title compound, C(4)H(6)N(2)OS(2), the dihedral angle between the five-membered heterocyclic ring and the plane of the eth-oxy group is 4.9 (2)°. The 1,3,4-thiadiazole-2-thione unit is planar, with an r.m.s. deviation of 0.011 Å from the corresponding squares plane defined by the seven constituent atoms. In the crystal, pairs of N-H⋯S hydrogen bonds link the mol-ecules into inversion dim...
Selective detection of cyanide anions is realized via electrofluorochromism of a benzothiadiazole-containing conjugated copolymer because oxidative fluorescence quenching induced by positive potentials can be significantly weakened by interaction between nucleophilic cyanide and electron-deficient benzothiadiazole.
Several new fluorinated quinazolinone derivatives were prepared and evaluated for in vitro anti-inflammatory activity. The molecular modelling study was performed for compounds 4, 8, 9, 10 and 13. The tested compounds showed strong interactions at the COX-2 binding sites. Compounds 8, 13, 9, and 10 containing triazole, thiadiazole, and oxadiazole rings showed the highest in vitro anti-inflammat...
A new series of cyclooxygenase-2 inhibitors with 2-amino-5-sulfanyl-1,3,4-thiadiazole as the central scaffold unit has been synthesized. The newly synthesized compounds were characterized by analytical and spectral methods. Compounds were screened for cyclooxygenase inhibitory activity by the colorimetric COX (ovine) inhibitor screening assay, anti-inflammatory activity by the carrageenean indu...
Two new thiazole and thiadiazole alkaloids, penicilliumthiamine A and B (2 and 3), were isolated from the culture broth of Penicillium oxalicum, a fungus found in Acrida cinerea. Their structures were elucidated mainly by spectroscopic analysis, total synthesis and X-ray crystallographic analysis. Biological evaluations indicated that compound 1, 3a and 3 exhibit potent cytotoxicity against dif...
1,2,3-Thiadiazole, 1,2,3-selenadiazole, and semicarbazones that are prepared from ketones promising moieties for lead compound development. New 1,2,3-thiadiazole (2c-4c) 1,2,3-selenadiazole derivatives (2d–4d) were the corresponding (2b-4b). The (2b-4b) (2a-4a). Characterization of synthesized compounds was performed using infrared spectra (IR), proton nuclear magnetic resonance (1H-NMR) spectr...
A new 1,8-naphthalimide based planar small molecular acceptor and two benzothiadiazole based wide band gap (WBG) polymer donors P1 and P2 were synthesized for nonfullerene organic photovoltaic cells (OPVs). Devices based on fluorinated polymer P2 achieved a highly improved PCE of 3.71% with an open circuit voltage (V(oc)) of 1.07 V, which is beyond the currently known levels for nonfullerene OP...
Eight novel compounds were prepared by reaction of 5-(bromo- propoxyphenyl)-10,15,20-triphenylporphyrin with oxazole thiols, 1,3,4-oxadiazole thiols and 1,3,4-thiadiazole thiols, and their structures confirmed by UV-vis, IR, 1H-NMR, MS and elemental analysis. The assessment of indirectly measured 1O(2) production rates against 5,10,15,20-tetraphenyl porphyrin (H(2)TPP) were described and the re...
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