FTIR spectroscopic studies has been carried out on pure toluene (TOL), propionitrile (PN) and their equimolar binary solution at room temperature. DFT calculations (using B3LYP functional with the Grimme's dispersion correction D3 and ωB97XD with the D2 version of Grimme's dispersion)...
The vapor-liquid equilibrium (VLE) of toluene-ionic liquid (IL) from short- to long-chain imidazolium-based ILs (i.e., [C4MIM]+, [C8MIM]+, [C10MIM]+, and [C12MIM]+) with various anions (i.e., [BF4]−, [PF6]−, and [Tf2N]−) was first measured under wide concentration and temperature ranges. These t...
Density Functional Theory (DFT) has been employed to investigate the self association of butyronitrile and the heterointeractions in the 1:2 (toluene: butyronitrile) and 1:1 complexes of toluene with butyronitrile. For this investigation the B3LYP functional with Grimme's dispersion correct...
FTIR spectroscopic studies has been carried out on the equimolar binary solution of toluene with acetonitrile which predicts the existence of molecular interactions. DFT calculations reveal that B3LYP functional with Grimme's dispersion correction D3 level is more suitable than the ωB97XD ...
A three-component condensation of 4-iminothiazolidin-2-ones or 4-iminoimidazolidin-2-ones with aldehydes and 5-aminopyrazole affords the corresponding 1,7-dihydro-6H-pyrazolo[3,4-b][1,3]thiazolo[5,4-e]pyridin-6-one or 5,7-dihydroimidazo[4,5-b]pyrazolo- [4,3-e]pyridin-6(1H)-one derivatives.
In this study, novel α-truxillic and β-truxinic acid-based, bio-derived diesters have been developed as internal donors for preparing Ziegler-Natta (ZN) catalysts. Impacts of these bio-derived diesters were investigated on the chemical composition, the morphology, the mode of adsorption, and t...
Dimers of phenylpropanoid acids play an important role in cross-linking of polysaccharide chains present in the cell wall. These compounds are responsible not only for mechanical properties of cell walls, but also for plant tolerance to both biotic and abiotic stresses. Due to conjugated double ...
Tetramethylpyrazine (TMP) has been studied in depth and is widely used in the treatment of many kinds of diseases in China. However, whether it has neuroprotective effects on cerebral ischemia remains unclear. An ischemia/reperfusion (I/R) injury animal model was established via middle cerebral ...
Multiple sclerosis (MS) is a disabling inflammatory and demyelinating disorder of the central nervous system. Tetramethylpyrazine (TMP) has been demonstrated to ameliorate cerebral ischemic injury and spinal cord injury by inhibiting inflammatory cell activation and pro-inflammatory cytokine pro...
The aim of our study was to investigate the effects of a new synthetic compound (E) -1- (E) -1- (2- hydroxy -5- chlorophenyl) -3- (3, 5, 6- three methyl pyrazine -2- based) -2- propylene -1 ketone, Z-11, a tetramethylpyrazine analogue, on cerebral ischemia reperfusion injury and the underlying m...
Tetramethylpyrazine is a bioactive compound found in Chinese black vinegar. This work is to investigate the potential effects of tetramethylpyrazine on intracellular cholesterol modulation in HepG2 cells. The results demonstrated that tetramethylpyrazine can induce intracellular cholesterol effl...
2,3,5,6-Tetramethylpyrazine (TMP) is an important health functional composition in vinegars, but there are controversial viewpoints about its formation mechanism and scarce relevant records on TMP content enhancement in vinegar products. In this study, a simple and accurate solvent extraction co...
Tetramethylpyrazine (TMPZ), a Chinese herb effectively used for cardiovascular disorders. The present study reports in vitro interaction studies of TMPZ with human serum albumin (HSA) using various spectroscopic, isothermal titration calorimetric (ITC), molecular modelling studies. The associati...
The concentration of tetramethylpyrazine (TMP) in vinegar is an active indicator of vinegar quality. Dispersive liquid–liquid microextraction (DLLME) was first applied to vinegar as a clean-up pre-treatment for the rapid (5 min) determination of TMP by high-pressure liquid chromatography with u...
Fuqu is an important starter culture used for Chinese liquor brewing. And distillers’ grains (DGS) are the main by-product of the Chinese liquor industry. Tetramethylpyrazine (TTMP) is an important functional substance and key characteristic aroma component in Chinese liquor. A strain with high...
The proton magnetic resonance spectrum of 2,5-dichloro p-xylene oriented in a nematic phase was recorded using the Fourier transform technique. Complete analysis of the spectrum was possible using subspectral decomposition. Furthermore, a simple iterative method convenient for larger multispin s...
A convenient synthetic method for the synthesis of substituted cyclohex-2-en-1-ones by the direct alkylation of phenols has been developed. Furthermore, enantiomerically enriched 2,6-dimethyl-6-(3-methylbut-2-enyl)-cyclohexa-2,4-dienone was prepared by the deprotonation of 2,6-dimethylphenol wit...
A series of bis-thiazolium diesters has been prepared. All were substantially less potent than atracurium and all showed appreciable vagal blockade at neuromuscular blocking doses. N-Benzyl quaternary substituents shortened the duration of neuromuscular blockade significantly. Neuromuscular bloc...
To develop agents for radionuclide imaging Aβ plaques in vivo, we prepared three fluorine-substituted analogs of arylbenzothiazole class; compound 2 has a high affinity for Aβ (Ki = 5.5 nM) and the specific binding to Aβ in fluorescent staining. In preparation for the synthesis of these arylb...
The FT-IR (4000–400 cm−1) and FT-Raman (4000–100 cm−1) spectral measurements of 2-amino-6-fluorobenzothiazole (2A6FBT) and complete assignments of the observed spectra have been proposed. Ab initio and DFT calculations have been performed and the structural parameters of the compound are deter...
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