Month: November 2022

On February 4, 2010, Mikamiyama, Hidenori; Ni, Chiyou; Shao, Bin; Tafesse, Laykea published a patent.Application In Synthesis of Ethyl 2-(4-(trifluoromethoxy)phenyl)acetate The title of the patent was Preparation of tetrahydropyridine and dihydropyrrole compounds as calcium channel blockers for treatment of pain and other disorders. And the patent contained the following:

The invention relates to tetrahydropyridinyl and dihydropyrrolyl compounds of formula I (wherein X = CO, CH2, or is part of a bridge; R9 = H or is part of a bridge; Hy = a 6- or 5-membered heteroaromatic ring, or a 5-membered heterocyclic ring; Z = SO2-aryl; SO2-cycloalkenyl, CH2-aryl, etc.; R1 = CN, OH-alkyl, CO2H, etc.; R2 = alkyl, alkenyl, alkynyl, etc.; m = 0-3; n = 0-1) and pharmaceutically acceptable salts, prodrugs, or solvates thereof. The invention is also directed to the use of compounds of formula I to treat a disorder responsive to the blockade of calcium channels, and particularly N-type calcium channels. Compounds of the present invention are especially useful for treating pain. Exemplary methods for synthesizing compounds of the invention were described, e.g., II was prepared by a multi-step synthesis involving the preparation of intermediate N-cyclopropyl-6-(1,2,3,6-tetrahydropyridin-4-yl)picolinamide and subsequent reaction with 4-trifluoromethoxybenzaldehyde to give II. Compounds of the invention were tested as N-type calcium channel (NTCC) blockers, and II demonstrated an IC50 value of 0.03 μM. II was also tested in the calcium mobilization assay for L-type calcium channel (LTCC) blocking activity and it showed an LTCC IC50 value of >20 μM in that assay. The experimental process involved the reaction of Ethyl 2-(4-(trifluoromethoxy)phenyl)acetate(cas: 1206550-93-7).Application In Synthesis of Ethyl 2-(4-(trifluoromethoxy)phenyl)acetate

The Article related to tetrahydropyridine dihydropyrrole compound preparation pain calcium channel disorder treatment, Heterocyclic Compounds (One Hetero Atom): Pyridines and other aspects.Application In Synthesis of Ethyl 2-(4-(trifluoromethoxy)phenyl)acetate

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

On March 24, 2016, Semeraro, Teresa; Tarsi, Luca; Micheli, Fabrizio; Luker, Tim; Cremonesi, Susanna published a patent.Category: esters-buliding-blocks The title of the patent was Preparation of 2-[bis(4-fluorophenyl)methyl]-2,7-diazaspiro[4.5]decan-10-one derivatives useful as inhibitors of human dopamine active transporter (DAT) protein. And the patent contained the following:

The invention relates to compounds of formula I, and in particular 2-[bis(4-fluorophenyl)methyl]-2,7-diazaspiro[4.5]decan-10-one derivatives and related compounds, method for their preparation and their use as inhibitors of human dopamine active transporter (DAT) protein for the treatment of sexual dysfunction, affective disorders, anxiety, depression, attention deficit hyperactivity disorder (ADHD), obesity, etc. Compounds of formula I, wherein Q is C=NOH, NH, Ncycloalkyl, etc.; X is CO, NH, Nalkyl, etc.; Y is O, SO0-2, Nalkyl, etc.; Z is O, S and CR11R12; A is (CHR5R6)0-2; B is (CR1R2)0-2; M is (R9R10)0-2; R1 and R2 are independently H, OH, F, alkyl, etc., or R1R2 together form =O; R3, R4, R7 and R8 are independently H, OH, alkoxy and alkyl, or R3 and R4, R7 and R8 may both be O, wherein said O atoms are linked by an alkylene group to form a straight chain or branched alkylenedioxy group; R5 and R6 are independently H and alkyl, or R5 and R6 from =O; R13 is substituted phenyl; R14 is (un)substituted phenyl; R9, R10, R11 and R12 are independently H and alkyl, are claimed. Example compound II was prepared by a multistep procedure (procedure given). All the invention compounds were evaluated for their affinity to the human transporters DAT, NET, SERT and hERG. From the assay, it was determined that example compound II exhibited pIC50 value of 6.89, 5.42, 4.65 and 5.7 towards human transporters DAT, NET, SERT and hERG resp. The experimental process involved the reaction of tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate(cas: 1198284-94-4).Category: esters-buliding-blocks

The Article related to bisfluorophenylmethyldiazaspirodecanone preparation human dopamine active transporter inhibitor, Heterocyclic Compounds (One Hetero Atom): Pyridines and other aspects.Category: esters-buliding-blocks

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

On April 30, 2020, Sar, Pintu; Roy, Saswati Ghosh; De, Priyadarsi; Ghosh, Sipra published an article.SDS of cas: 2358-84-1 The title of the article was Synthesis of Glutamic Acid Derived Organogels and their Applications in Dye Removal from Aqueous Medium. And the article contained the following:

To develop glutamic acid derived crosslinked polymeric organogels for dye adsorption from aqueous media, di-Me 2-(methacrylamido)pentanedioate (Glu-MAC) is polymerized using diethylene glycol dimethacrylate as crosslinker via the reversible addition-fragmentation chain transfer (RAFT) technique to synthesize crosslinked polymeric organogels with pendant glutamate moieties. The mech. properties of organogels are examined by rheol. study. The organogels exhibit higher value of storage modulus (G’) than the loss modulus (G”) within the linearity limits of deformation, and strong dependence of G’ values on the extent of crosslinking in the gel matrix. Field emission SEM shows porous structure of the gel matrix, therefore, organogels are able to exhibit swelling behaviors in organic solvents such as dichloromethane, N,N-dimethylformamide, THF, acetone, and methanol. Dye adsorption properties of these organogels are investigated using different aqueous dye solutions, such as crystal violet (CV), malachite green (MG), rhodamine-B, and uranine. The gels show high dye adsorption capacities (≥97%) toward cationic dyes like CV and MG. The experimental process involved the reaction of Oxybis(ethane-2,1-diyl) bis(2-methylacrylate)(cas: 2358-84-1).SDS of cas: 2358-84-1

The Article related to glutamic acid derived organogel adsorbent dye removal raft polymerization, swelling rheol property, Plastics Fabrication and Uses: Plastic Product Uses and other aspects.SDS of cas: 2358-84-1

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

On May 1, 2013, Zhang, Junjie; Wang, Huanxia; Ma, Yun; Wang, Youming; Zhou, Zhenghong; Tang, Chuchi published an article.Application In Synthesis of (R)-Methyl 3-hydroxybutanoate The title of the article was CaF2 catalyzed SN2 type chlorodehydroxylation of chiral secondary alcohols with thionyl chloride: a practical and convenient approach for the preparation of optically active chloroalkanes. And the article contained the following:

A CaF2 catalyzed chlorodehydroxylation of chiral secondary alcs. with thionyl chloride has been developed. The chlorination reaction is effective for a wide range of alcs., generating the corresponding chloroalkanes in good yield with high optical purity with inversion of the original configuration of the alc. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Application In Synthesis of (R)-Methyl 3-hydroxybutanoate

The Article related to chloroalkane chiral preparation, calcium fluoride catalyst chlorodehydroxylation chiral secondary alc thionyl chloride, Aliphatic Compounds: Halides and Halonium Compounds and other aspects.Application In Synthesis of (R)-Methyl 3-hydroxybutanoate

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

On May 20, 2022, Gaertner, Cornelius V.; Schneider, Christoph published an article.Reference of Methyl 2-cyclopentanonecarboxylate The title of the article was Enantioselective Annulation of α,β-Unsaturated N-Acyliminium Ions with β-Keto Ester Enolates via Cooperative Palladium and Bronsted Acid Catalysis. And the article contained the following:

Authors herein report a cooperative palladium- and Bronsted acid-catalyzed strategy toward the first enantioselective annulation of in situ generated α,β-unsaturated N-acyliminium ions with chiral metal enolates. Novel polycyclic oxoisoindoles featuring three contiguous stereogenic centers have been obtained with typically good yields, outstanding enantiocontrol, and moderate to good diastereoselectivity. The utility of the process was further demonstrated by their conversion to synthetically valuable scaffolds. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Reference of Methyl 2-cyclopentanonecarboxylate

The Article related to polycyclic oxoisoindole preparation enantioselective diastereoselective, hydroxy styrylisoindolinone keto ester enolate annulation, Heterocyclic Compounds (One Hetero Atom): Pyridines and other aspects.Reference of Methyl 2-cyclopentanonecarboxylate

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

On January 15, 2020, Larsen, Matthew A.; Hennessy, Elisabeth T.; Deem, Madeleine C.; Lam, Yu-hong; Sauri, Josep; Sather, Aaron C. published an article.Electric Literature of 517-23-7 The title of the article was A Modular and Diastereoselective 5 + 1 Cyclization Approach to N-(Hetero)Aryl Piperidines. And the article contained the following:

A new general de novo synthesis of pharmaceutically important N-(hetero)aryl piperidines is reported. This protocol uses a robustly diastereoselective reductive amination/aza-Michael reaction sequence to achieve rapid construction of complex polysubstituted ring systems starting from widely available heterocyclic amine nucleophiles and carbonyl electrophiles. Notably, the diastereoselectivity of this process is enhanced by the presence of water, and DFT calculations support a stereochem. model involving a facially selective protonation of a water-coordinated enol intermediate. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Electric Literature of 517-23-7

The Article related to heteroarylpiperidine diastereoselective preparation, aminoheteroarene ketoacrylate diastereoselective reductive amination aza michael reaction, Heterocyclic Compounds (One Hetero Atom): Pyridines and other aspects.Electric Literature of 517-23-7

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

On May 17, 2021, Kurka, Dustin Werner; Niehues, Maximilian; Kudruk, Sergej; Gerke, Volker; Ravoo, Bart Jan published an article.Related Products of 6038-19-3 The title of the article was Polythiolactone-Decorated Silica Particles: A Versatile Approach for Surface Functionalization, Catalysis and Encapsulation. And the article contained the following:

The surface chem. of colloidal silica has tremendous effects on its properties and applications. Commonly the design of silica particles is based on their de novo synthesis followed by surface functionalization leading to tailormade properties for a specific purpose. Here, the design of robust “precursor” polymer-decorated silica nano- and microparticles is demonstrated, which allows for easy post-modification by polymer embedded thiolactone chem. To obtain this organic-inorganic hybrid material, silica particles (SiO2P) were functionalized via surface-initiated atom transfer radical polymerization (SI-ATRP) with poly(2-hydroxyethyl acrylate) (PHEA)-poly(thiolactone acrylamide (PThlAm) co-polymer brushes. Exploiting the versatility of thiolactone post-modification, a system was developed that could be used in three exemplary applications: 1) the straightforward mol. post-functionalization to tune the surface polarity, and therefore the dispersibility in various solvents; 2) the immobilization of metal nanoparticles into the polymer brushes via the in situ formation of free thiols that preserved catalytic activity in a model reaction; 3) the formation of redox-responsive, permeable polymer capsules by crosslinking the thiolactone moieties with cystamine dihydrochloride (CDH) followed by dissolution of the silica core. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).Related Products of 6038-19-3

The Article related to polythiolactone silica particle surface functionalization catalysis encapsulation, nanoparticles, polymer brushes, silica, surface functionalization, thiolactones, Plastics Fabrication and Uses: Plastic Product Uses and other aspects.Related Products of 6038-19-3

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

On February 5, 2020, Fan, Wuhou; Jin, Yong; Shi, Liangjie; Du, Weining; Zhou, Rong; Lai, Shuanquan; Shen, Yichao; Li, Yupeng published an article.Related Products of 517-23-7 The title of the article was Achieving fast self-healing and reprocessing of supertough water-dispersed “living” supramolecular polymers containing dynamic ditelluride bonds under visible light. And the article contained the following:

It is very challenging to achieve polymers that are mech. robust and fast self-healable at ambient conditions, which are highly desirable for smart materials of the next-generation. Herein, combining dynamic ditelluride bonds and 2-ureido-4[1H]-pyrimidinone (UPy) moieties in the main chains, a novel type of visible-light-induced self-healing water-dispersed supramol. polymers (DTe-WSPs) with outstanding healing properties were developed. The prepared DTe-WSPs emulsions showed excellent emulsion stability, and highly transparent DTe-WSPs films obtained from these emulsions exhibited much improved mech. properties and fast recoverability after the incorporation of UPy groups, owing to the phys. cross-links formed by quadruple hydrogen-bonded UPy moieties. Supertoughness (105.2 MJ m-3) and fast self-healability under visible light (healing efficiency of 85.6% within 10 min) could be achieved simultaneously with the adjustment of the ditelluride content and the UPy content, and the toughness of our polymers is higher than those of the reported ambient temperature self-healable polymers. The visible-light-induced ditelluride metathesis is a predominant factor in the healing process of DTe-WSPs, and the ditelluride metathesis triggered by photothermy and hydrogen bonding could also afford the ultimate healing result. Meanwhile, DTe-WSPs can be reprocessed using visible light, providing a facile way to process polymers at mild conditions. To our surprise, the “living” DTe-WSPs exhibited the ability to initiate the polymerization of vinyl monomers under visible light, which is first reported for water-dispersed self-healing polymers. We considered the elaborated design philosophy, based on the readily available, clean, safe, and easily manipulated visible light, which can not only provide inspiration for preparing fast ambient temperature self-healing and reprocessing polymer materials with robust mech. properties but also develop a new macroinitiator to initiate the ambient temperature polymerization of vinyl monomers. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Related Products of 517-23-7

The Article related to telluride ureidopyrimidinone supramol polymer light self healing, photoinitiated polymerization, reprocessing, self-healing, supramolecular polymer, visible light, Plastics Fabrication and Uses: Plastic Product Uses and other aspects.Related Products of 517-23-7

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

On April 30, 2020, Kupriyanova, O. V.; Milyukov, V. A.; Shevyrin, V. A.; Sadykova, R. G.; Mustafin, R. I. published an article.Recommanded Product: 118-55-8 The title of the article was Development and Validation of a Gas Chromatographic Method for Quantitative Determination of the Active Ingredient in Phenyl Salicylate Drug Substance. And the article contained the following:

Anew method for quant. determination of the active ingredient in Ph salicylate drug substance using gas chromatog. with flame-ionization detection (GC-FID) was developed and validated. The experiments used an HP-5 quartz capillary column with a grafted stationary phase of diphenyl- (5%) and dimethylpolysiloxane (95%) (Agilent Technologies, USA). The conditions for the chromatog. separation and the chromatog. system suitability parameters were determined The Ph salicylate content in the drug substance was determined by the internal standard method. The method was validated for specificity, linearity, precision, and stability (robustness) and was found to meet the main acceptance criteria. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).Recommanded Product: 118-55-8

The Article related to phenyl salicylate determination gas chromatog, Pharmaceutical Analysis: Synthetic Organic Compounds and other aspects.Recommanded Product: 118-55-8

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

Jenke, Dennis; Liu, Norman published an article in 2016, the title of the article was Chromatographic considerations in the standardization of liquid chromatographic methods used for extractables screening.Formula: C33H54O6 And the article contains the following content:

Organic extractables and leachables (E&L) from drug product packaging, manufacturing components, and delivery devices are of concern as they could impact product quality and/or user safety. Proper E&L assessment involves chromatog. profiling of a drug product or extraction solvent, including liquid chromatog. with UV absorption and mass spectrometric detection (LC/UV/MS), to uncover these substances and establish their identities and concentrations Relative retention time (RRT) could be used as one parameter for identifying E&L and relative response factors (RRFs) could be used for quantifying extractables if (a) RRT and RRFs were consistent across various LC/UV/MS methods and instrument systems used for profiling and (b) a database existed for RRT and RRFs. This manuscript addresses (a) by examining the variation in RRT and RRF for model extractables across variations to a specified LC/UV/MS method. Creating and populating a database of relative retention and response data (b) is beyond the manuscript’s scope. Studies which examined small, and more controlled, variations to the method and larger, and less controlled, variations were performed. These assessments support the conclusions that if the operational parameters of the LC/UV/MS are specified and if only relatively minor deviations from these parameters are allowed, then RRTs are sufficiently reproducible that they are an effective means of securing tentative extractable’s identities and UV RRFs are sufficiently reproducible that they provide accurate extractable’s concentrations MS RRFs are less reproducible and only estimate concentration The experimental process involved the reaction of Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate(cas: 3319-31-1).Formula: C33H54O6

The Article related to organic extractable screening liquid chromatog, Pharmaceutical Analysis: Synthetic Organic Compounds and other aspects.Formula: C33H54O6

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