Day: December 6, 2022

Kobayashi, Hirokazu published the artcileMolecular Orientation and Dynamics of a Derivative of 2,2,6,6-Tetramethyl-1-Piperidinyloxyl Radical with a Large Substituent Group Dispersed in 1D-Nanochannels of 2,4,6-Tris(4-Chlorophenoxy)-1,3,5-Triazine Crystal, Product Details of C9H17NO, the publication is Applied Magnetic Resonance (2020), 51(8), 711-724, database is CAplus.

The mol. orientation and dynamics were examined for 4-acetamido-2,2,6,6-tetramethyl-1-piperidinyloxyl (4-acetamido-TEMPO) radicals, which have a larger substituent group than many other TEMPO radicals, dispersed in the one-dimensional (1D) nanochannel of 2,4,6-tris(4-chlorophenoxy)-1,3,5-triazine (CLPOT) with 4-substituted-2,2,6,6-tetramethylpiperidine (R-TEMP; R=OH or H). When TEMPOH (R=OH) was used as a spacer for dispersion in the CLPOT nanochannels, the mol. orientation of 4-acetamido-TEMPO in the CLPOT nanochannels was similar to that of other previously reported 4-substituted-TEMPO (4-X-TEMPO; X=OH, =O or OCH₃) radicals. However, the activation energy for the rotational diffusion of 4-acetamido-TEMPO in the CLPOT nanochannels, estimated to be 11 kJ mol^-1, was larger than that of other 4-X-TEMPO mols. (6-8 kJ mol^-1). These results indicate that the mol. dynamics of 4-X-TEMPO in the CLPOT nanochannels can be controlled by the selection of a larger substituent X at the 4-position in 4-X-TEMPO (in this study, X=NHCOCH₃), and also suggest an important concept for the design of new organic magnets.

Applied Magnetic Resonance published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C9H17NO, Product Details of C9H17NO.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Asif, Kanwal published the artcileSolid phase syntheses of peptoid like arylureido compounds and sequencing of isobars without molecular encoding, Computed Properties of 39546-32-2, the publication is Organic & Biomolecular Chemistry (2019), 17(17), 4204-4207, database is CAplus and MEDLINE.

Arylureido-backbone containing peptoid-like trimers were prepared using the one-bead-one-compound approach. Isobaric mols. were synthesized from isocyanate precursors that contain alkyl halide handles at the ortho and para-positions in the Ph ring. After chain extension with a primary amine, the piperazine-capped mols. were sequenced using tandem mass spectrometry and successfully identified based on their fragmentation pattern without a need for internal mol. encoding.

Organic & Biomolecular Chemistry published new progress about 39546-32-2. 39546-32-2 belongs to piperidines, auxiliary class Piperidine,Amine,Amide, name is Piperidine-4-carboxamide, and the molecular formula is C6H12N2O, Computed Properties of 39546-32-2.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Bindschadler, Pascal published the artcileSynthesis of a potential 10E4 tetrasaccharide antigen involved in scrapie pathogenesis, COA of Formula: C11H15NOS, the publication is Helvetica Chimica Acta (2006), 89(11), 2591-2610, database is CAplus.

To test the hypothesis that tetrasaccharide 3 is involved in scrapie pathogenesis, tetrasaccharide derivative 32 functionalized with an amine linker at the reducing end was synthesized. A (2+2) glycosylation approach was chosen to furnish the target compound in fully protected form. To investigate its biol. role, tetrasaccharide 32 was further functionalized to the corresponding thiol 33 using Traut’s reagent. During the course of the synthesis, the N,N-diacetyl protecting group proved surprisingly labile to radical and acidic conditions.

Helvetica Chimica Acta published new progress about 4972-31-0. 4972-31-0 belongs to piperidines, auxiliary class Piperidine,Benzene, name is 1-(Phenylsulfinyl)piperidine, and the molecular formula is C11H15NOS, COA of Formula: C11H15NOS.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Rohland, Philip published the artcileStructural alterations on the TEMPO scaffold and their impact on the performance as active materials for redox flow batteries, SDS of cas: 826-36-8, the publication is Materials Advances (2022), 3(10), 4278-4288, database is CAplus.

Trimethylammonium-2,2,6,6-tetramethylpiperidine-1-oxyl chloride (TMA-TEMPO) has been intensively studied for its usage in aqueous organic redox flow batteries. Straightforward synthesis, reliable electrochem., fast kinetics and high cycling stability are the advantages of this active material. Nevertheless, it has been shown that elevated temperatures and high states of charge accelerate the decomposition of this material. Hence, a comparative study was performed with five new and one known TEMPO derivatives, to elucidate the structure-stability relationship of the TEMPO scaffold and to investigate the influence on the battery performance. The results show that the introduction of linkers between the solubility-promoting group and the piperidyl core or enhanced shielding of the radical has a great impact on the stability during cycling.

Materials Advances published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C9H17NO, SDS of cas: 826-36-8.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Wu, Qiong published the artcileCo-culture of Bacillus amyloliquefaciens ACCC11060 and Trichoderma asperellum GDFS1009 enhanced pathogen-inhibition and amino acid yield, Application In Synthesis of 39546-32-2, the publication is Microbial Cell Factories (2018), 155, database is CAplus and MEDLINE.

Bacillus spp. are a genus of biocontrol bacteria widely used for antibiosis, while Trichoderma spp. are biocontrol fungi that are abundantly explored. In this study, a liquid co-cultivation of these two organisms was tried firstly. Through liquid chromatog.-mass spectrometry/mass spectrometry (LC-MS/MS), it was discovered that with an inoculation in the ratio of 1.9:1, the antimicrobial effect of the co-cultured fermentation liquor of Bacillus amyloliquefaciens ACCC11060 and Trichoderma asperellum GDFS1009 was found to be significantly higher than that of pure-cultivation. A raise in the synthesis of antimicrobial substances contributed to this significant increase. Addnl., a co-culture with the inoculation of the two organisms in the ratio of 1:1 was found to enhance the production of specific amino acids. This technique could be further explored for either a large scale production of amino acids or could serve as a theor. base for the generation of certain rare amino acids. This work clearly demonstrated that co-cultivation of B. amyloliquefaciens ACCC11060 and T. asperellum GDFS1009 could produce more specific biocontrol substances and amino acids.

Microbial Cell Factories published new progress about 39546-32-2. 39546-32-2 belongs to piperidines, auxiliary class Piperidine,Amine,Amide, name is Piperidine-4-carboxamide, and the molecular formula is C17H18N2O6, Application In Synthesis of 39546-32-2.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

D’Amato, Erica M. published the artcileSelective Aromatic C-H Hydroxylation Enabled by η⁶-Coordination to Iridium(III), Formula: C11H21BF4N2O2, the publication is Organometallics (2015), 34(18), 4626-4631, database is CAplus and MEDLINE.

Authors report here an aromatic C-H hydroxylation protocol in which the arene is activated through η⁶-coordination to an iridium(III) complex. η⁶-Coordination of the arene increases its electrophilicity and allows for high positional selectivity of hydroxylation at the site of least electron d. Through investigation of intermediate η⁵-cyclohexadienyl adducts and arene exchange reactions, it was evaluated that incorporation of arene π-activation into a catalytic cycle for C-H functionalization.

Organometallics published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C11H21BF4N2O2, Formula: C11H21BF4N2O2.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Imberdis, Thibaut published the artcileCell models of lipid-rich α-synuclein aggregation validate known modifiers of α-synuclein biology and identify stearoyl-CoA desaturase, Safety of 4-(2-Chlorophenoxy)-N-(3-(methylcarbamoyl)phenyl)piperidine-1-carboxamide, the publication is Proceedings of the National Academy of Sciences of the United States of America (2019), 116(41), 20760-20769, database is CAplus and MEDLINE.

Microscopy of Lewy bodies in Parkinson’s disease (PD) suggests they are not solely filamentous deposits of α-synuclein (αS) but also contain vesicles and other membranous material. We previously reported the existence of native αS tetramers/multimers and described engineered mutations of the αS KTKEGV repeat motifs that abrogate the multimers. The resultant excess monomers accumulate in lipid membrane-rich inclusions associated with neurotoxicity exceeding that of natural familial PD mutants, such as E46K. Here, we use the αS “3K” (E35K+E46K+E61K) engineered mutation to probe the mechanisms of reported small-mol. modifiers of αS biochem. and then identify compounds via a medium-throughput automated screen. αS 3K, which forms round, vesicle-rich inclusions in cultured neurons and causes a PD-like, L-DOPA-responsive motor phenotype in transgenic mice, was fused to YFP, and fluorescent inclusions were quantified. Live-cell microscopy revealed the highly dynamic nature of the αS inclusions: for example, their rapid clearance by certain known modulators of αS toxicity, including tacrolimus (FK506), isradipine, nilotinib, nortriptyline, and trifluoperazine. Our automated 3K cellular screen identified inhibitors of stearoyl-CoA desaturase (SCD) that robustly prevent the αS inclusions, reduce αS 3K neurotoxicity, and prevent abnormal phosphorylation and insolubility of αS E46K. SCD inhibition restores the E46K αS multimer:monomer ratio in human neurons, and it actually increases this ratio for overexpressed wild-type αS. In accord, conditioning 3K cells in saturated fatty acids rescued, whereas unsaturated fatty acids worsened, the αS phenotypes. Our cellular screen allows probing the mechanisms of synucleinopathy and refining drug candidates, including SCD inhibitors and other lipid modulators.

Proceedings of the National Academy of Sciences of the United States of America published new progress about 1032229-33-6. 1032229-33-6 belongs to piperidines, auxiliary class Metabolic Enzyme,SCD, name is 4-(2-Chlorophenoxy)-N-(3-(methylcarbamoyl)phenyl)piperidine-1-carboxamide, and the molecular formula is C20H22ClN3O3, Safety of 4-(2-Chlorophenoxy)-N-(3-(methylcarbamoyl)phenyl)piperidine-1-carboxamide.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Milo, Anat published the artcileA data-intensive approach to mechanistic elucidation applied to chiral anion catalysis, Recommanded Product: 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, the publication is Science (Washington, DC, United States) (2015), 347(6223), 737-743, database is CAplus and MEDLINE.

Knowledge of chem. reaction mechanisms can facilitate catalyst optimization, but extracting that knowledge from a complex system is often challenging. Here, the authors present a data-intensive method for deriving and then predictively applying a mechanistic model of an enantioselective organic reaction. As a validating case study, the authors selected an intramol. dehydrogenative C-N coupling reaction, catalyzed by chiral phosphoric acid derivatives, in which catalyst-substrate association involves weak, noncovalent interactions. Little was previously understood regarding the structural origin of enantioselectivity in this system. Catalyst and substrate substituent effects were probed by systematic phys. organic trend anal. Plausible interactions between the substrate and catalyst that govern enantioselectivity were identified and supported exptl., indicating that such an approach can afford an efficient means of leveraging mechanistic insight so as to optimize catalyst design.

Science (Washington, DC, United States) published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C11H21BF4N2O2, Recommanded Product: 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Yousif, M. N. M. published the artcileSynthesis and Anticancer Activity of New Substituted Piperidinones Linked to Pyrimidine, Thiazole, and Triazole Glycoside Derivatives, Computed Properties of 826-36-8, the publication is Russian Journal of General Chemistry (2019), 89(8), 1673-1682, database is CAplus.

New piperidinone incorporating pyrimidine, triazine, diazipine, oxatriazine, and thiazole derivatives have been synthesized starting with tetramethylpipridin-4-one. Structures of the newly synthesized compounds are characterized on the basis of spectroscopic and anal. data. The anticancer activity of the prepared compounds has been studied in vitro against HCT-116 and MCF-7 human cancer cells using the MTT assay. A number of compounds demonstrates potent activity towards both cell lines with IC₅₀ values comparable with doxorubicin.

Russian Journal of General Chemistry published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C17H37NO3, Computed Properties of 826-36-8.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Salome, Christophe published the artcileBenzofuran derivatives as a novel class of inhibitors of mTOR signaling, Recommanded Product: Piperidine-4-carboxamide, the publication is European Journal of Medicinal Chemistry (2014), 41-49, database is CAplus and MEDLINE.

High-throughput screening (HTS) hit (I) was previously identified as an inhibitor of the Akt/mTOR (Akt/mammalian target of rapamycin) signaling, which is a major target in oncol. The cytotoxicity of I was determined on a panel of human cancer cells lines with an IC₅₀ comprised between 30 and 140 μM. Subsequent structure-activity relation (SAR) studies led us to the identification of compounds that displayed an enhanced cytotoxicity. We demonstrated also that these mols. directly bind to mTOR complex 1 (mTORC1) and inhibit its kinase activity.

European Journal of Medicinal Chemistry published new progress about 39546-32-2. 39546-32-2 belongs to piperidines, auxiliary class Piperidine,Amine,Amide, name is Piperidine-4-carboxamide, and the molecular formula is C6H12N2O, Recommanded Product: Piperidine-4-carboxamide.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem