Category: esters-buliding-blocks

A high-resolution Orbitrap Mass spectral library for trace volatile compounds in fruit wines was written by Liu, Yaran;Li, Na;Li, Xiaoyao;Qian, Wenchao;Liu, Jiani;Su, Qingyu;Chen, Yixin;Zhang, Bolin;Zhu, Baoqing;Cheng, Jinxin. And the article was included in Scientific Data in 2022.Electric Literature of C10H18O2 This article mentions the following:

The overall aroma is an important factor of the sensory quality of fruit wines, which attributed to hundreds of volatile compounds However, the qual. determination of trace volatile compounds is considered to be very challenging work. GC-Orbitrap-MS with high resolution and high sensitivity provided more possibilities for the determination of volatile compounds, but without the high-resolution mass spectral library. For accuracy of qual. determination in fruit wines by GC-Orbitrap-MS, a high-resolution mass spectral library, including 76 volatile compounds, was developed in this study. Not only the HRMS spectrum but also the exact ion fragment, relative abundance, retention indexes (RI), CAS number, chem. structure diagram, aroma description and aroma threshold (ortho-nasally) were provided and were shown in a database website (Food Flavor Laboratory, http://foodflavorlab.cn/). HRMS library was used to successfully identify the volatile compounds mentioned above in 16 fruit wines (5 blueberry wines, 6 goji berry wines and 5 hawthorn wines). The library was developed as an important basis for further understanding of trace volatile compounds in fruit wines. In the experiment, the researchers used many compounds, for example, 5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9Electric Literature of C10H18O2).

5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Electric Literature of C10H18O2

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

Design, Synthesis, and Anticancer Activity of a Selenium-Containing Galectin-3 and Galectin-9N Inhibitor was written by Di Gaetano, Sonia;Pirone, Luciano;Galdadas, Ioannis;Traboni, Serena;Iadonisi, Alfonso;Pedone, Emilia;Saviano, Michele;Gervasio, Francesco Luigi;Capasso, Domenica. And the article was included in International Journal of Molecular Sciences in 2022.HPLC of Formula: 4163-60-4 This article mentions the following:

Galectins are soluble β-D-galactoside-binding proteins whose implication in cancer progression and disease outcome makes them prominent targets for therapeutic intervention. In this frame, the development of small inhibitors that block selectively the activity of galectins represents an important strategy for cancer therapy which is, however, still relatively underdeveloped. To this end, we designed here a rationally and efficiently novel diglycosylated compound, characterized by a selenoglycoside bond and the presence of a lipophilic benzyl group at both saccharide residues. The relatively high binding affinity of the new compound to the carbohydrate recognition domain of two galectins, galectin 3 and galectin 9, its good antiproliferative and anti-migration activity towards melanoma cells, as well as its anti-angiogenesis properties, pave the way for its further development as an anticancer agent. In the experiment, the researchers used many compounds, for example, (2S,3R,4S,5S,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 4163-60-4HPLC of Formula: 4163-60-4).

(2S,3R,4S,5S,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 4163-60-4) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.HPLC of Formula: 4163-60-4

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

Spatial action of mosquito repellents was written by Schreck, Carl E.;Gilbert, Irwin H.;Weidhaas, D. E.;Posey, Kenneth H.. And the article was included in Journal of Economic Entomology in 1970.Name: Benzyl 2-hydroxy-2-methylpropanoate This article mentions the following:

The spatial action for selected repellents to Aedes aegypti (mosquito) was studied in an olfactometer. Of 44 compounds evaluated, all but 1 significantly reduced the approach of mosquitoes to within 15 in. of treated hands; 16 caused outstanding reduction of approach. In the experiment, the researchers used many compounds, for example, Benzyl 2-hydroxy-2-methylpropanoate (cas: 19444-23-6Name: Benzyl 2-hydroxy-2-methylpropanoate).

Benzyl 2-hydroxy-2-methylpropanoate (cas: 19444-23-6) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Name: Benzyl 2-hydroxy-2-methylpropanoate

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

The design, synthesis and biological evaluation of conformationally restricted 4-substituted-2,6-dimethylfuro[2,3-d]pyrimidines as multi-targeted receptor tyrosine kinase and microtubule inhibitors as potential antitumor agents was written by Zhang, Xin;Raghavan, Sudhir;Ihnat, Michael;Hamel, Ernest;Zammiello, Cynthia;Bastian, Anja;Mooberry, Susan L.;Gangjee, Aleem. And the article was included in Bioorganic & Medicinal Chemistry in 2015.Formula: C10H14O4 This article mentions the following:

A series of eleven conformationally restricted, 4-substituted 2,6-dimethylfuro[2,3-d]pyrimidines was designed to explore the bioactive conformation required for dual inhibition of microtubule assembly and receptor tyrosine kinases (RTKs), and their biol. activities are reported. All three rotatable single bonds in the lead compound were sequentially restricted to address the role of each in SAR for microtubule and RTK inhibitory effects. Several compounds showed microtubule depolymerizing activity comparable to or better than the lead compound, some with nanomolar EC₅₀ values. One compound had no effect on microtubules, others showed potent RTK inhibition with nanomolar IC₅₀s. These compounds confirm that the bioactive conformation for RTK inhibition is different from that for tubulin inhibition. A tetrahydroquinoline analog showed the most potent dual tubulin inhibitors (i.e., tubulin polymerization inhibitors, microtubule-disrupting agents) and RTK inhibitory activities [i.e., low nanomolar inhibition of epidermal growth factor receptors (EGFR), vascular endothelial growth factor receptor 2 (VEGFR2) and platelet derived growth factor receptor β (PDGFR-β)]. The tetrahydroquinoline analog has highly potent activity against many NCI cancer cell lines, including several chemo-resistant cell lines, and could serve as a lead for further preclin. studies. The synthesis of the target compounds was achieved by a reaction of 4-chloro-2,6-dimethylfuro[2,3-d]pyrimidine with amine derivatives, such as benzenamine derivatives, benzofuranamine derivatives, tetrahydroquinoline derivatives, indole derivatives In the experiment, the researchers used many compounds, for example, Diethyl 2-(prop-2-yn-1-yl)malonate (cas: 17920-23-9Formula: C10H14O4).

Diethyl 2-(prop-2-yn-1-yl)malonate (cas: 17920-23-9) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Formula: C10H14O4

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

Methylation of mono- and dicarboxylic acids with dimethyl carbonate catalyzed with binder-free zeolite NaY was written by Khusnutdinov, R. I.;Shchadneva, N. A.;Mayakova, Yu. Yu.;Konovalova, Yu. S.;Khazipova, A. N.;Kutepov, B. I.. And the article was included in Russian Journal of Organic Chemistry in 2017.Recommanded Product: 106-79-6 This article mentions the following:

Me mono- and dicarboxylates were synthesized by treating the corresponding acids with di-Me carbonate in the presence of a heterogenic catalyst, crystalline aluminosilicate whose mech. strong granules were built of 90-95% of crystal aggregates of zeolite Y with modulus of about 5.0 in the Na-form. Optimum catalyst and reagent ratio and the reaction conditions were found for the preparation of Me esters of mono- and dicarboxylic acids in high yields. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Recommanded Product: 106-79-6).

Dimethyl decanedioate (cas: 106-79-6) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Recommanded Product: 106-79-6

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Analogs of capsaicin with agonist activity as novel analgesic agents; structure-activity studies. 3. The hydrophobic side-chain “C-region” was written by Walpole, Christopher S. J.;Wrigglesworth, Roger;Bevan, Stuart;Campbell, Elizabeth A.;Dray, Andy;James, Iain F.;Masdin, Kay J.;Perkins, Martin N.;Winter, Janet. And the article was included in Journal of Medicinal Chemistry in 1993.Safety of 12-Methoxy-12-oxododecanoic acid This article mentions the following:

Structural variants of the hydrophobic side chain (C region) of the capsaicin mol. have been incorporated into a series of vanillylamides and vanillylthioureas. These compounds have been tested in an in vitro assay for agonism (⁴⁵Ca²⁺ influx into dorsal root ganglia neurons), previously shown to be predictive of analgesic activity. The results of this study have established the requirement for a hydrophobic substituent of limited size (molar refractivity, MR, <55) in order to obtain high potency. Combination of the information about the C-region of the capsaicin mol. with studies of the other parts of the mol. provides a rational basis for the design of compounds of increased potency. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0Safety of 12-Methoxy-12-oxododecanoic acid).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Safety of 12-Methoxy-12-oxododecanoic acid

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

Phytochemical profiling of Coryphantha macromeris (cactaceae) growing in greenhouse conditions using ultra-high-performance liquid chromatography-tandem mass spectrometry was written by Cabanas-Garcia, Emmanuel;Areche, Carlos;Jauregui-Rincon, Juan;Cruz-Sosa, Francisco;Balch, Eugenio Perez-Molphe. And the article was included in Molecules in 2019.SDS of cas: 106-79-6 This article mentions the following:

Chromatog. separationcombined with mass spectrometry is a powerful tool for the characterization of plant metabolites because of its high sensitivity and selectivity. In this work, the phytochem.profile of aerial and radicular parts of Coryphantha macromeris (Engelm.) Britton & Rose growing under greenhouse conditions was qual.investigated for the first time by means of modern ultra-high-performance liquid chromatog. tandem mass spectrometry (UHPLC-PDA-HESI-Orbitrap-MS/MS). The UHPLC-PDA-HESI-Orbitrap-MS/MS anal. indicated a high complexity in phenolic metabolites. In our investigation, 69 compounds were detected and 60 of them were identified. Among detected compounds, several phenolic acids, phenolic glycosides, and organic acids were found. Within this diversity, 26 metabolites were exclusively detected in the aerial part, and 19 in the roots. Twenty-four metabolites occurred in both plant parts. According to the relative abundance of peaks in the chromatogram, ferulic and piscidic acids and their derivatives may correspond to one of the main phenolic compounds of C.macromeris. Our results contribute to the phytochem.knowledge regarding C.macromeris and its potential applications in the pharmaceutical and cosmetic industries. Besides, some metabolites and their fragmentation patterns are reported here for the first time for cacti species. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6SDS of cas: 106-79-6).

Dimethyl decanedioate (cas: 106-79-6) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. SDS of cas: 106-79-6

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

Selective monomethyl esterification of dicarboxylic acids by use of monocarboxylate chemisorption on alumina was written by Ogawa, Haruo;Chihara, Teiji;Taya, Kazuo. And the article was included in Journal of the American Chemical Society in 1985.HPLC of Formula: 3903-40-0 This article mentions the following:

The application of alumina as a solid support affords a new procedure for selective monoesterification of dicarboxylic acids. Thus, terephthalic acid (I), isophthalic acid, cis– and trans-1,4-cyclohexanedicarboxylic acids, and aliphatic dicarboxylic acids give the corresponding monomethyl esters quant. with diazomethane. Selective monomethyl esterification of phthalic acid is not successful on alumina, probably as a consequence of the close proximity of the two carboxyl groups and the forced orientation of the second group when one is adsorbed. Me₂SO₄ and p-MeC₆H₄N:NNHMe were also effective for the selective monomethyl esterification of I by this procedure. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0HPLC of Formula: 3903-40-0).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.HPLC of Formula: 3903-40-0

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

Influence of acrylonitrile butadiene elastomer as polymeric co-agent for crosslinking poly(vinyl chloride) by gamma radiation was written by Gupta, Neeraj K.;Gupta, Shivani;Tedesse, Aschalew. And the article was included in Journal of Polymer Research in 2022.Name: 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) This article mentions the following:

Plasticized filled poly(vinyl chloride) (PVC) blends incorporating acrylonitrile-butadiene rubber (NBR) as an elastomeric crosslinking co-agent were subjected to gamma radiation by a Co₆₀ source for total doses 25 to 100 kGy. Changes in total insoluble contents, physicomech. properties (before and after thermal aging), morphol., spectroscopy, and dynamic mech. behavior as a function of NBR loading and total dose were investigated. An increase in total insoluble contents with both NBR loading and total dose indicates that within the parameters of the study, the blends underwent crosslinking as the predominant effect with an increase of hardness. Unaged mech. properties (tensile strength, Young’s modulus, and elongation at break) of the blends were significantly modified. These same properties, after aging at 90°C, 168 h are again modified due to further crosslinking reactions above the glass transition temperatures The obtained results indicate that there exists a loading range for NBR for which an optimal combination of room temperature and aged mech. properties may be obtained. Abrasion resistance of the blends improves due to the formation of chem. bonded networks. The mechanism of the crosslinking reaction was elucidated by Fourier transform IR spectroscopy. Electron scanning microscopy shows single-phase blend morphologies for all blends and reveals a reduction in matrix ductility on crosslinking. Dynamic mech. anal. conducted to study the change in loss tangent, storage modulus, and loss modulus at 100 kGy total dose shows an increase in these parameters and that the modification of physicomech. properties are due to both crosslinking as well as enhanced interaction between PVC and NBR. In the experiment, the researchers used many compounds, for example, 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8Name: 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate)).

2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Name: 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate)

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

Inhibition of human leukocyte elastase (HLE) by N-substituted peptidyl trifluoromethyl ketones was written by Skiles, Jerry W.;Fuchs, Victor;Miao, Clara;Sorcek, Ronald;Grozinger, Karl G.;Mauldin, Scott C.;Vitous, Jana;Mui, Philip W.;Jacober, Stephen. And the article was included in Journal of Medicinal Chemistry in 1992.Category: esters-buliding-blocks This article mentions the following:

A series of tripeptides possessing trifluoromethyl or aryl kinase residues at P₁ were prepared and evaluated both in vitro and in vivo as potential inhibitors of human leukocyte elastase (HLE). Tripeptides containing nonnaturally occurring N-substituted glycine residues at the P₂-position have been demonstrated to be potent in vitro inhibitors of HLE, with IC₅₀ values in the submicromolar range. Sterically demanding substituents on the P₂-nitrogen have no detrimental effect on in vitro potency. The inhibition process presumably acts via hemiketal formation with the active site Ser¹⁹⁵ of HLE, and is facilitated by the strongly electron withdrawing trifluoromethyl functionality. Deletion of the amino acid at the P³-subsite region affords inactive compounds Valine is the preferred residue at the P₁-position, whereas the corresponding glycine, alanine, α,α-dimethylglycine, or phenylalanine analogs are all inactive. The compounds described herein all confer a high degree of in vitro specificity when tested against representing cysteine, aspartyl, metallo, and other serine proteases. One of the most potent in vitro inhibitors is tripeptide trifluoromethyl ketone I (IC₅₀ = 0.084 μM). I was also tested in hamsters in an elastase-induced pulmonary hemorrhage (EPH) model. In this model, intratracheal (it) administration of I, 5 min prior to HLE challenge, effectively inhibited hemorrhage in a dose-dependent manner with an ED₅₀ of 4.8 μg. The administration of 20 μg (i.t.) of I 24, 48 and 72 h prior to HLE challenge exhibits significant inhibition against hemorrhage at all time points (97%, 64% and 49%, resp.). In a 21-day chronic model of emphysema in hamsters, 200 μg of HLE administered i.t. caused an elastase-induced emphysema in the lungs which can be quantitated histol. utilizing image anal. In this assay, I significantly inhibited pulmonary lesions associated with septal destruction and increased alveolar spaces, when dosed at 20 μg i.t. 5 min prior to challenge with HLE. In the experiment, the researchers used many compounds, for example, (S)-tert-Butyl (1-(methoxy(methyl)amino)-1-oxo-3-phenylpropan-2-yl)carbamate (cas: 87694-53-9Category: esters-buliding-blocks).

(S)-tert-Butyl (1-(methoxy(methyl)amino)-1-oxo-3-phenylpropan-2-yl)carbamate (cas: 87694-53-9) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Category: esters-buliding-blocks

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