Month: December 2022

Gohil, Vishal M. published the artcileNutrient-sensitized screening for drugs that shift energy metabolism from mitochondrial respiration to glycolysis, HPLC of Formula: 2508-72-7, the publication is Nature Biotechnology (2010), 28(3), 249-255, database is CAplus and MEDLINE.

Most cells have the inherent capacity to shift their reliance on glycolysis relative to oxidative metabolism, and studies in model systems have shown that targeting such shifts may be useful in treating or preventing a variety of diseases ranging from cancer to ischemic injury. However, we currently have a limited number of mechanistically distinct classes of drugs that alter the relative activities of these two pathways. We screen for such compounds by scoring the ability of >3500 small mols. to selectively impair growth and viability of human fibroblasts in media containing either galactose or glucose as the sole sugar source. We identify several clin. used drugs never linked to energy metabolism, including the antiemetic meclizine, which attenuates mitochondrial respiration through a mechanism distinct from that of canonical inhibitors. We further show that meclizine pretreatment confers cardioprotection and neuroprotection against ischemia-reperfusion injury in murine models. Nutrient-sensitized screening may provide a useful framework for understanding gene function and drug action within the context of energy metabolism

Nature Biotechnology published new progress about 2508-72-7. 2508-72-7 belongs to imidazoles-derivatives, auxiliary class Inhibitor,Immunology/Inflammation,Histamine Receptor, name is N-Benzyl-N-((4,5-dihydro-1H-imidazol-2-yl)methyl)aniline hydrochloride, and the molecular formula is C17H20ClN3, HPLC of Formula: 2508-72-7.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Ye, Chen-Xi published the artcileStereocontrolled 1,3-nitrogen migration to access chiral α-amino acids, COA of Formula: C9H9ClN2, the publication is Nature Chemistry (2022), 14(5), 566-573, database is CAplus and MEDLINE.

Here a protocol for the economical and practical synthesis of optically active α-amino acids RNHC(R¹)(R²)C(O)OH (R = Ts, Ms, C(O)OMe, (2,2,2-trichloroethoxy)carbonyl; R¹ = H, Me; R² = pent-2-yn-1-yl, 4-methylphenyl, 2H-1,3-benzodioxol-5-yl, etc.) based on an unprecedented stereocontrolled 1,3-nitrogen shift was reported. The method employs abundant and easily accessible carboxylic acids R¹CH(R²)C(O)OH as starting materials, which are first connected to a nitrogenation reagent, followed by a highly regio- and enantioselective ruthenium- or iron-catalyzed C(sp³)-H amination. This straightforward method displays a very broad scope, providing rapid access to optically active α-amino acids with aryl, allyl, propargyl and alkyl side chains, and also permits stereocontrolled late-stage amination of carboxylic-acid-containing drugs and natural products.

Nature Chemistry published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C7H7BrFN, COA of Formula: C9H9ClN2.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Lu, Hui-Yang published the artcileN-heterocyclic carbene-palladium-imine complex catalyzed α-arylation of ketones with aryl and heteroaryl chlorides under air atmosphere, Recommanded Product: 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride, the publication is Tetrahedron Letters (2020), 61(29), 152124, database is CAplus.

A new structure of saturated ring skeleton monoligated NHC-Pd-imine complex was easily synthesized and unambiguously confirmed by X-ray single crystal diffraction. It was found to be an efficient and air-stable catalyst for the α-arylation of ketones. The reaction was operated in air without any neg. effect. Non-activated aryl and heteroaryl chlorides were successfully applied in the reaction with only 0.5 mol% catalyst loadings under air atm. Excellent to good product yields were afforded.

Tetrahedron Letters published new progress about 258278-25-0. 258278-25-0 belongs to imidazoles-derivatives, auxiliary class Achiral NHCs Ligands, name is 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride, and the molecular formula is C27H39ClN2, Recommanded Product: 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Ganguli, Kasturi published the artcileCooperative Mn(I)-complex catalyzed transfer hydrogenation of ketones and imines, Product Details of C9H9ClN2, the publication is Dalton Transactions (2019), 48(21), 7358-7366, database is CAplus and MEDLINE.

The synthesis and reactivity of Mn(I) complexes bearing bifunctional ligands comprising both the amine N-H and benzimidazole fragments I and II (R = H, Me; R¹ = H, Me, phenyl; R² = H, Me) are reported. Among the various ligands, the N-((1H-benzimidazol-2-yl)methyl)aniline ligand containing Mn(I) complex II (R = R² = H; R¹ = Ph) presented higher reactivity in the transfer hydrogenation (TH) of ketones R³C(O)R⁴ (R³ = Ph, thiophen-2-yl, cyclopropyl, etc.; R⁴ = Me, propan-2-yl, tert-Bu, etc.; R³R⁴ = 9H-fluoren-9-yl, 1,2,3,4-tetrahydronaphthalen-1-yl, cyclohexyl) in 2-propanol. Exptl., it was established that both the benzimidazole and amine N-H proton played a vital role in the enhancement of the catalytic activity. Utilizing this system, a wide range of ketones R³C(O)R⁴ and aldehydes R⁵CHO (R⁵ = 4-CH₃C₆H₄, thiophen-2-yl, pentyl, etc.) was reduced efficiently. Notably, the TH of several imines R⁶R⁷C=NR⁸ (R⁶ = 4-OCH₃C₆H₄, thiophen-2-yl, naphthalen-2-yl, etc.; R⁷ = H, Me, Et; R⁸ = C₆H₅, 4-OCH₃C₆H₄, CH₃(CH₂)₃, etc.), as well as chemoselective reduction of unsaturated ketones, was achieved in the presence of this catalyst. DFT calculations were carried out to understand the plausible reaction mechanism which disclosed that the transfer hydrogenation reaction followed a concerted outer-sphere mechanism.

Dalton Transactions published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C9H9ClN2, Product Details of C9H9ClN2.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Rottschaefer, Dennis published the artcileA Modular Access to Divinyldiphosphenes with a Strikingly Small HOMO-LUMO Energy Gap, HPLC of Formula: 258278-25-0, the publication is Chemistry – A European Journal (2019), 25(34), 8127-8134, database is CAplus and MEDLINE.

The olefinic C-H bond functionalization of (NHC)CHPh (NHC = IPr =C{(NAr)CH}₂ 1; SIPr = C{(NAr)CH₂}₂ 2; Ar = 2,6-iPr₂C₆H₃), derived from classical N-heterocyclic carbenes (NHCs), with PCl₃ affords the dichlorovinylphosphines {(NHC)C(Ph)}PCl₂ (NHC = IPr 3, SIPr 4). Two-electron reduction of 3 and 4 with magnesium leads to the formation of the divinyldiphosphenes [{(NHC)C(Ph)}P]₂ (NHC = IPr 5, SIPr 6) as crystalline solids. Unlike literature-known diphosphenes, which are mostly yellow or orange, 5 is a green whereas 6 is a purple solid. Although the P:P bond lengths of 5 (2.062(1)) and 6 (2.055(1) Å) are comparable to those of the known diphosphenes (2.02-2.08 Å), the C-P bond lengths of 5 (1.785(1)) and 6 (1.797(1) Å) are, however, considerably shorter than a Csp2-P single bond length (1.85 Å), indicating a considerable π-conjugation between C:C and P:P moieties. The HOMO-LUMO energy gap for 5 (4.15) and 6 (4.52 eV) is strikingly small and thus the narrowest among the diphosphenes (>4.93 eV) reported as yet. Consequently, 5 readily undergoes P:P bond cleavage at room temperature on treatment with sulfur to form the unique dithiophosphorane {(IPr)C(Ph)}P(S)₂ 7. Interestingly, reaction of 5 with selenium gives the selenadiphosphirane [{(IPr)C(Ph)}P]₂Se 8 with an intact P-P bond.

Chemistry – A European Journal published new progress about 258278-25-0. 258278-25-0 belongs to imidazoles-derivatives, auxiliary class Achiral NHCs Ligands, name is 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride, and the molecular formula is C27H39ClN2, HPLC of Formula: 258278-25-0.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Guo, Tao published the artcileDiscovery and SAR of biaryl piperidine MCH1 receptor antagonists through solid-phase encoded combinatorial synthesis, Application of 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, the publication is Bioorganic & Medicinal Chemistry Letters (2005), 15(16), 3696-3700, database is CAplus and MEDLINE.

An encoded combinatorial library based on aryl- and biarylpiperidine scaffolds was designed and synthesized. Screening of this library resulted in the discovery of high-nanomolar biarylpiperidine-based MCH1 receptor antagonists. Follow-up optimization using a parallel synthesis provided potent, single digit nanomolar antagonists.

Bioorganic & Medicinal Chemistry Letters published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C9H9ClN2, Application of 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Cao, Hong-Tao published the artcileModification of iridium(III) complexes for fabrication of high-performance non-doped organic light-emitting diode, COA of Formula: C19H14N2, the publication is Dyes and Pigments (2015), 8-16, database is CAplus.

Four novel Ir(III) complexes containing 1,2-diphenyl-1H-benzoimidazole as cyclometalated ligands were synthesized and characterized. The complexes displayed strong emissions around 492 nm with high luminescence quantum yields of 70-92% in CH₂Cl₂ solution at 298 K. Doped OLEDs based on the complexes were prepared, which showed a peak current efficiency of 34.5 cd A^-1, power efficiency of 40.1 lm W^-1. Nondoped OLEDs using the complexes as emitters were then fabricated for further study of their electroluminescence properties. One nondoped device possessed outstanding performance with a maximum current efficiency of 19.8 cd A^-1 and power efficiency of 20.4 lm W^-1 while simultaneously displaying low efficiency roll-off at high luminance.

Dyes and Pigments published new progress about 2622-67-5. 2622-67-5 belongs to imidazoles-derivatives, auxiliary class Benzimidazole,Benzene,Benzimidazole, name is 1,2-Diphenyl-1H-benzo[d]imidazole, and the molecular formula is C19H14N2, COA of Formula: C19H14N2.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Cao, Hong-Tao published the artcileEnhanced quantum efficiency of cationic iridium(III) complexes with carbazole moiety as a steric hindrance unit, Safety of 1,2-Diphenyl-1H-benzo[d]imidazole, the publication is Journal of Molecular Structure (2012), 59-64, database is CAplus.

Two cationic iridium(III) complexes with different degrees of steric hindrance, namely, [Ir(L1)₂(bpy)]PF₆ (1) and [Ir(L2)₂(bpy)]PF₆ (2) (where HL1, HL2 and bpy ligands are 1,2-diphenylbenzo[d]imidazole, 9-(4-(2-phenylbenzo[d]imidazol-1-yl)phenyl)-9H-carbazole and 2,2′-bipyridine, resp.), have been designed and synthesized. Photoluminescence measurements show that the photoluminescence quantum yield of complex 2 with the introduction of carbazole moieties as steric hindrance units is up to 36% in the neat film, which is obviously higher than that (27%) of the model complex 1. On basis of the quantum calculations and photophys. data, we conclude that the carbazole moieties effectively reduce the intermol. interaction by enhancing the steric hindrance of the complex, which inhibits the quenching process without altering the nature of the excited-state. In addition, the results of thermogravimetric anal. (TGA) and cyclic voltammetry (CV) measurements reveal that complexes 1 and 2 have potential applications in electroluminescent devices.

Journal of Molecular Structure published new progress about 2622-67-5. 2622-67-5 belongs to imidazoles-derivatives, auxiliary class Benzimidazole,Benzene,Benzimidazole, name is 1,2-Diphenyl-1H-benzo[d]imidazole, and the molecular formula is C19H14N2, Safety of 1,2-Diphenyl-1H-benzo[d]imidazole.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Cao, Hongtao published the artcileAn orange iridium(III) complex with wide-bandwidth in electroluminescence for fabrication of high-quality white organic light-emitting diodes, Computed Properties of 2622-67-5, the publication is Journal of Materials Chemistry C: Materials for Optical and Electronic Devices (2013), 1(44), 7371-7379, database is CAplus.

A novel Ir(III) (pbi)₂Ir(biq) with a strong orange emission at 573 nm was synthesized, which showed a high luminescence quantum yield (PLQY) of 45% in CH₂Cl₂ at 298 K. The quantum chem. calculations together with the photophys. properties indicated that the transition incorporation of ³MLCT (metal-to-ligand charge transfer), ³LLCT (ligand-to-ligand charge transfer) mixed with ³LC (ligand-centered ³π-π^*) characters contributed to the emission of (pbi)₂Ir(biq). Cyclic voltammetry (CV), TGA and DSC were then performed to study its electrochem. and thermal properties for fabrication of electroluminescent devices. (pbi)₂Ir(biq) exhibited wide-bandwidth in electroluminescence (EL) of its orange electroluminescent devices, which made it effectively available to fabricate high-quality two-element white organic LEDs (WOLEDs). The resultant WOLED possessed a high current efficiency (η_c) of 22.1 cd A^-1 and power efficiency (η_p) of 25.5 lm W^-1 with a high color rendering index (CRI) of 80. The WOLED retained a favorable η_p of 10.9 lm W^-1 and η_c of 16 cd A^-1 at a high luminance of 1000 cd m^-2. This WOLED exhibited a qualified R9 of 13 and Duv of -0.0013, and these values together with the high CRI conformed to the required standard for lamp illumination of the ENERGY STAR.

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about 2622-67-5. 2622-67-5 belongs to imidazoles-derivatives, auxiliary class Benzimidazole,Benzene,Benzimidazole, name is 1,2-Diphenyl-1H-benzo[d]imidazole, and the molecular formula is C19H14N2, Computed Properties of 2622-67-5.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Azadfar, Roohollah published the artcileEstimation of Heat Capacity of 143 Pure Ionic Liquids Using Artificial Neural Network, HPLC of Formula: 79917-90-1, the publication is International Journal of Thermophysics (2022), 43(6), 81, database is CAplus.

Based on artificial neural network (ANN), a new model is presented to estimate the heat capacity of pure ionic liquids A database for the heat capacity of ionic liquids created by extracting exptl. data from literature covering the period from 1971 to 2021 is reported. With the presented approach, heat capacity is calculated and evaluated by source data bank for 7059 data points of 143 ionic liquids The accuracies of new ANN model are evaluated by comparing with the most commonly used correlations in the literatures, and the results reveal that the proposed network provides more accurate results than other literature correlations considered in this work. The average absolute percentage deviation from the new model is only 1.14%.

International Journal of Thermophysics published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, HPLC of Formula: 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem