Month: October 2022

Li, Shoulei; Zhang, Enge; Feng, Junjun; Li, Xin published the artcile< An enantioselective conjugate addition reaction of 3-substituted benzothiophen-2-ones and 2-phthalimidoacrylates>, Synthetic Route of 112-63-0, the main research area is chiral benzothiophenone preparation; benzothiophenone phthalimidoacrylate enantioselective conjugate addition.

A highly enantioselective conjugate addition reaction of 3-substituted benzothiophen-2-ones to 2-phthalimidoacrylates has been developed using a bifunctional tertiary-amine thiourea catalyst. A number of chiral 3-substituted benzothiophen-2-one compounds I (R1 = Bn, i-Bu, (CH2)2COOMe, etc.; R2 = CH3, C2H5, Bn, etc.) were obtained with excellent yields (up to 99%) and very good stereoselectivities (up to >19 : 1 dr and up to 92% ee). The reaction was proved to be an efficient strategy for the synthesis of enantioenriched α-amino acid derivatives with 1,3-nonadjacent stereogenic centers.

Organic Chemistry Frontiers published new progress about Aromatic esters Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Galenko, Ekaterina E.; Novikov, Mikhail S.; Shakirova, Firuza M.; Shakirova, Julia R.; Kornyakov, Ilya V.; Bodunov, Vladimir A.; Khlebnikov, Alexander F. published the artcile< Isoxazole Strategy for the Synthesis of 2,2'-Bipyridine Ligands: Symmetrical and Unsymmetrical 6,6'-Binicotinates, 2,2'-Bipyridine-5-carboxylates, and Their Metal Complexes>, Category: esters-buliding-blocks, the main research area is sym binicotinate bipyridine carboxylate metal complex preparation; unsym binicotinate bipyridine carboxylate metal complex preparation.

An effective strategy was developed for the synthesis of new 2,2′-bipyridine ligands, sym. and unsym. 6,6′-binicotinates, and 2,2′-bipyridine-5-carboxylates, from 4-propargylisoxazoles. The synthesis of sym. 2,2′-disubstituted 6,6′-binicotinates was achieved using the Eglinton reaction of 5-methoxy-4-(prop-2-yn-1-yl)isoxazoles with Cu(OAc)2, followed by Fe(NTf2)2/Au(NTf2)tBuXPhos-catalyzed isomerization of the so-formed mixture of isoxazole/azirine-substituted biacetylenic intermediates. Unsym. 2,2′-disubstituted 6,6′-binicotinates were prepared via a copper-free Sonogashira coupling of 5-methoxy-4-(prop-2-yn-1-yl)isoxazoles with 6-bromonicotinates to give Me 6-(3-(5-methoxyisoxazol-4-yl)prop-1-ynyl)pyridine-3-carboxylates, followed by a transformation of the propargylisoxazole moiety of the adduct into the pyridine fragment under Fe(II)/Au(I) relay catalysis conditions. 6-(Pyrid-2-yl)nicotinates were synthesized by a Stille-type coupling of 2-(tributylstannyl)pyridine with 6-bromonicotinates. Several cyclopalladated complexes of a new series of 6,6′-binicotinates and 2,2′-bipyridine-5-carboxylates and the homoleptic Cu(I) complex were synthesized in high yields.

Journal of Organic Chemistry published new progress about Crystal structure. 33402-75-4 belongs to class esters-buliding-blocks, and the molecular formula is C8H9NO2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

O’Toole, Sarah E.; Rose, Christopher A.; Gundala, Sivaji; Zeitler, Kirsten; Connon, Stephen J. published the artcile< Highly chemoselective direct crossed aliphatic-aromatic acyloin condensations with triazolium-derived carbene catalysts>, Synthetic Route of 112-63-0, the main research area is hydroxylketone derivative preparation; aliphatic aldehyde aromatic aldehyde acyloin condensation triazolium precatalyst.

It has been shown for the first time that triazolium precatalysts promote (in the presence of base) highly chemoselective crossed acyloin condensation reactions between aliphatic and ortho-substituted aromatic aldehydes. An o-bromine atom can serve as a temporary directing group to ensure high chemoselectivity (regardless of the nature of the other substituents on the aromatic ring) which then can be conveniently removed. The process is of broad scope and is operationally simple as it does not require the preactivation of any of the coupling partners to ensure selectivity. Preliminary data indicate that highly enantioselective variants of the reaction are feasible using chiral precatalysts.

Journal of Organic Chemistry published new progress about Acyloin condensation. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Booth, Paul M.; Fox, Christina M. J.; Ley, Steven V. published the artcile< Regiospecific alkylation of β-keto thio esters and use in the synthesis of acyltetronic acids>, Synthetic Route of 617-55-0, the main research area is carolic acid; carlosic acid; acetothioacetate alkylation; carbonyl acetothioacetate.

Anions of Me3CSCOCH2COMe react with alkyl halides and carbonyl compounds in a regiospecific manner to afford products which are versatile synthetic intermediates as exemplified by short syntheses of the mold metabolites carolic acid (I) and carlosic acid (II).

Tetrahedron Letters published new progress about Alkylation. 617-55-0 belongs to class esters-buliding-blocks, and the molecular formula is C6H10O5, Synthetic Route of 617-55-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ampong, Isaac published the artcile< Metabolic and Metabolomics Insights into Dilated Cardiomyopathy>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is review metabolomics dilated cardiomyopathy population sex difference; Biomarkers; Dilated cardiomyopathy; Metabolites; Metabolomics.

A review. Metabolomics is an emerging and powerful discipline that provides a global information on the phenotype of mammalian systems via the study of endogenous and exogenous metabolites in cells, tissues, and biofluids. These studies aid in the identification of biomarkers to prevent diseases in later life or help to early detect onset of diseases as well as aiding in the elucidation of disease mechanisms. Metabolomics provides a unique opportunity to discover novel biomarkers for DCM. This review demonstrates evidence of metabolite-based biomarkers useful for predicting, diagnosing, and monitoring therapeutic interventions of DCM. Key metabolites identified as potential biomarkers for diagnosing DCM include acylcarnitines, succinic acid, malate, methylhistidine, aspartate, methionine, and phenylalanine. In terms of differentiating DCM from ischemic cardiomyopathy, potential biomarkers including 1-pyrroline-2-carboxylate, norvaline, lysophosphatidylinositol (16:0/0:0), phosphatidylglycerol, fatty acid esters of hydroxy fatty acid, and phosphatidylcholine were identified. Acylcarnitines, isoleucine and linoleic acid, and tryptophan were the main biomarkers to monitor treatment response to DCM. Mapping metabolites to metabolic pathways revealed dysregulation of branch-chain amino acid, glycolysis, tricarboxylic acid cycle, and triacylglycerol and pentose phosphate metabolism, which have the therapeutic potential for DCM. This review shows several limitations including the use of small sample sizes, lack of interpretation of age and sex differences in most studies, and the fact that studies have so far been limited to case-control study designs. Metabolites have close proximity to disease phenotype. With recent advances in metabolomics field, potential biomarkers for DCM have been identified based on studies using different biol. and metabolomics technologies. However, multicenter studies with larger populations that will lead to validation of these identified biomarkers to enable their clin. translation and utilization are still needed. Dilated cardiomyopathy (DCM) is the most common form of heart muscle disease characterized by progressive dilatation and ventricular dysfunction.

Annals of Nutrition & Metabolism published new progress about Acylcarnitines Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Psarra, Vassiliki; Fousteris, Manolis A.; Hennig, Lothar; Bantzi, Marina; Giannis, Athanassios; Nikolaropoulos, Sotiris S. published the artcile< Identification of azepinone fused tetracyclic heterocycles as new chemotypes with protein kinase inhibitory activities>, Recommanded Product: Ethyl 5-formyl-1H-pyrrole-2-carboxylate, the main research area is azepinone fused tetracyclic heterocycle preparation protein kinase inhibitor.

The design and synthesis of small tetracyclic heterocycles which bear two new regioisomeric 2-carboxyethyl-1H-pyrrole-annulated indoloazepinone scaffolds is described. An azepinone motif, which is inherent in the structures of many well studied protein kinase inhibitors, serves as prominent structural feature of the new compounds Concise access to the new regioisomeric tetracyclic derivatives was accomplished through amide coupling of appropriate pyrrole and indole precursors followed by an intramol. Heck coupling reaction of the intermediate amide conjugates. Preliminary evaluation of newly synthesized tetracyclic mols. against a panel of protein kinases indicated their inhibitory activities and revealed promising selectivity profiles. The new compounds displayed no significant antiproliferative activity against MCF-7 cancer cells. Derivative Et 6-oxo-4,5,6,11-tetrahydro-2H-pyrrolo[30,40:5,6]azepino[4,3b]indole-1-carboxylate exhibited selective TAK1 kinase inhibitory activity and figures as a promising chemotype for the discovery of new TAK1 inhibitors.

Tetrahedron published new progress about Heck reaction. 7126-50-3 belongs to class esters-buliding-blocks, and the molecular formula is C8H9NO3, Recommanded Product: Ethyl 5-formyl-1H-pyrrole-2-carboxylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Takiyama, Mikina; Matsumoto, Takashi; Sanechika, Sho; Watanabe, Junko published the artcile< Pharmacokinetic study of traditional Japanese Kampo medicine shimotsuto used to treat gynecological diseases in rats>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is shimotsuto medicine gynecol disease pharmacokinetics; Active ingredients; Blood and circulatory system; Gynecological disease; Pharmacokinetics; Shimotsuto.

Shimotsuto is a traditional Japanese Kampo medicine used to treat gynecol. diseases, such as irregular menstruation, in addition to oversensitivity to cold and chilblains. Part of the pharmacol. actions of shimotsuto is traditionally considered to be exerted by an improvement effect of the blood and the circulatory system. Multiple ingredients (e.g., catalpol and paeoniflorin) contained in shimotsuto have been reported to have pharmacol. activities on the blood and circulatory system, and thus been considered to contribute to the pharmacol. actions of shimotsuto. However, it remains unclear whether the ingredients can be absorbed into the body following oral administration of shimotsuto. The aim in the present study was to specify shimotsuto ingredient absorbed into the systemic circulation in rats. Seven candidate active ingredients (catalpol, paeoniflorin, albiflorin, ligustilide, senkyunolide A, butylphthalide, and ferulic acid) in plasma after oral administration of shimotsuto were quantified by targeted liquid chromatog.-tandem mass spectrometry (LC-MS/MS) anal. This study also performed nontargeted LC-MS/MS anal. of plasma following administration of constituent crude drugs of shimotsuto to find extensively blood-absorbed ingredients of shimotsuto. Among detected peaks in the nontargeted anal., two peaks could be identified as bergapten and 8-debenzoylpaeoniflorin, subsequently their concentrations in shimotsuto-treated rat plasma were quantified. These pharmacokinetic studies indicated that catalpol showed the highest plasma concentration following administration of shimotsuto, followed by 8-debenzoylpaeoniflorin. This study suggests that all nine ingredients are absorbed into the blood following oral administration of shimotsuto and possibly contribute to its pharmacol. action.

Journal of Natural Medicines published new progress about Blood plasma. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ding, Sheng; Zhu, Jinxing; Tian, Saiqi published the artcile< Polyurethane-based retanning agents with antimicrobial properties>, Category: esters-buliding-blocks, the main research area is polyurethane retanning agent antimicrobial property.

Polyurethane-based retanning agents with antimicrobial properties were synthesized by the chem. incorporation of ciprofloxacin (CPFX) units into polyurethane chains. The chem. structures were characterized by Fourier transform IR (FTIR) and gel permeation chromatog. (GPC). Then, the retanning agents were applied in the leather retanning process. Owing to the conjugation of CPFX into polyurethane chains, the mol. weight increases, further leading to the decrease in hydroxyl value and increase in particle size. The shrinkage temperature was improved after retanning. Owing to the filling of retanning agents in the gap of collagen fibers, the average thickness of leather increased by 65.8%. The mech. properties of leather were visibly improved because of the large number of -COOH coordinate with Cr3+ and more hydrogen crosslinking with carboxyl group, amino group, and hydroxyl group of leather collagen. Furthermore, leather retanned by these polyurethane-based retanning agents presented good antimicrobial properties. The antibacterial activity could be conserved above 89% even after rinsing for ten times.

e-Polymers published new progress about Antibacterial agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Kisil, V. M.; Kovtunenko, V. A.; Kucherenko, T. T.; Tyltin, A. K.; Babichev, F. S. published the artcile< Condensed isoquinolines. 7. Synthesis of derivatives of the new heterocyclic system thieno[3',2':5,6]pyrimido[1,2-b]isoquinoline>, HPLC of Formula: 112-63-0, the main research area is cyclocondensation bromomethylbenzeneacetonitrile aminothiophenecarboxylate; benzeneacetonitrile bromomethyl cyclocondensation aminothiophenecarboxylate; thienopyrimidoisoquinolinone preparation tautomerism.

Title compounds I [R = R1 = Me; RR1 = (CH2)4, (CH2)3; R = H, R1 = Et; R = Ph, R1 = H] were prepared by cyclocondensation of 2-(bromomethyl)benzeneacetonitrile with Et 2-amino-3-thiophenecarboxylates. The tautomerism of I was discussed.

Khimiya Geterotsiklicheskikh Soedinenii published new progress about Cyclocondensation reaction. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, HPLC of Formula: 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Yang, Xiao-Guang; Du, Feng-Huan; Li, Jun-Jie; Zhang, Chi published the artcile< Late-Stage Dehydroxyazidation of Alcohols Promoted by Trifunctional Hypervalent Azido-Iodine(III) Reagents>, Computed Properties of 112-63-0, the main research area is alkyl alc azido iodine reagent chemoselective dehydroxyazidation; azidoalkane preparation; alcohol; azide; click reaction; hypervalent iodine; late-stage functionalization.

A practical method for dehydroxyazidation of alcs. via an SN2 pathway involving PPh3 and trifunctional benziodazolone-based hypervalent azido-iodine(III) reagents, which function as an electrophilic center, an azido source and a base was reported. This mild, chemoselective method was used for late-stage azidation of structurally complex alcs., as well as for a new synthetic route to the antiepileptic drug rufinamide. The reaction mechanism was also investigated both exptl. and computationally.

Chemistry – A European Journal published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics