Tag: 300-400

Synthesis of four benzyl protected carbohydrates was written by Yin, Shan;Liu, Jiao;Wang, Haimei;Ni, Guanghui;Qin, Dingmei;Li, Li. And the article was included in Huaxue Shijie in 2021.Recommanded Product: 604-69-3 The following contents are mentioned in the article:

Four benzyl-protected carbohydrates (3 a-3 d) were obtained by the reactions towards five steps of acetylation, Et thiolation, deacetylation, benzylation and hydrolysis, using D-galactose, D-mannose, D-xylose and D-lactose as starting materials. The total yields of four target compounds were 27.2%, 23.1%, 15.7% and 35.4%, resp. The structures were characterized by ¹H NMR, ¹³C NMR and MS. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Recommanded Product: 604-69-3).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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.Recommanded Product: 604-69-3

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

Visible Light Enables Aerobic Iodine Catalyzed Glycosylation was written by Krumb, Matthias;Lucas, Tobias;Opatz, Till. And the article was included in European Journal of Organic Chemistry in 2019.Quality Control of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate The following contents are mentioned in the article:

A versatile protocol for light induced catalytic activation of thioglycosides using iodine as an inexpensive and readily available photocatalyst was developed. Oxygen serves as a green and cost-efficient terminal oxidant and irradiation is performed with a common household LED-bulb. The scope of this glycosylation protocol was investigated in the synthesis of O-glycosides with yields up to 95 %. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Quality Control of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Quality Control of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate

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

Synthesis of trisaccharide repeating unit of fucosylated chondroitin sulfate was written by He, Haiqing;Chen, Dong;Li, Xiaomei;Li, Chengji;Zhao, Jin-Hua;Qin, Hong-Bo. And the article was included in Organic & Biomolecular Chemistry in 2019.HPLC of Formula: 604-69-3 The following contents are mentioned in the article:

We described the chem. synthesis of a sulfated trisaccharide repeating unit of fucosylated chondroitin sulfate (FCS), which has significant anticoagulant activity. Well-functionalized monosaccharides were readily prepared, and highly efficient glycosylation using a common activator (NIS/TfOH) were also presented. The synthesized trisaccharide could be used to extend oligosaccharide sequences. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3HPLC of Formula: 604-69-3).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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. 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.HPLC of Formula: 604-69-3

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

Structure-activity relationships in antiinflammatory drugs and predictability was written by Mager, Peter P.;Metzner, J.;Paintz, M.;Wenzel, U.. And the article was included in Scientia Pharmaceutica in 1980.Formula: C17H15NO5 The following contents are mentioned in the article:

The antiinflammatory activity of salicylic acid and pyrazolone derivatives was regressed against Hammett’s electronic constant, Hansch’s lipophilic substitution constant, and Mager’s relative surface tension. There is a sufficient recognition (comparison between exptl. obtained and theor. calculated values) and predictability (comparison between forecasts and exptl. proof after synthesis). This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Formula: C17H15NO5).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) 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. Formula: C17H15NO5

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

Highly β-Selective Glycosylation Reactions for the Synthesis of ω-Functionalized Alkyl β-Maltoside as a Co-crystallizing Detergent was written by Hossain, M. A.;Siddiki, S. M. A. Hakim;Elias, M.;Rahman, M. M.;Jamil, M. A. R.. And the article was included in Russian Journal of Organic Chemistry.COA of Formula: C16H22O11 The following contents are mentioned in the article:

Abstract: Methods have been reported for the preparation of ω-functionalized alkyl maltoside and glycoside detergents via a simple and inexpensive synthetic route. The key step was stannic chloride-mediated glycosylation of long-chain alcs. or thiols with maltose octaacetate at 0 or -10°C, resp., within a very short time (isolated yield 17-44%), which provided more than 98% β-selectivity. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3COA of Formula: C16H22O11).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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, including apples, durians, pears, bananas, pineapples, and strawberries. 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.COA of Formula: C16H22O11

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

Synthesis and in vitro antisickling activity of some non-aromatic esters was written by Tshilanda, Dorothee D.;Ngbolua, Koto-te-Nyiwa;Tshibangu, Damien S. T.;Malumba, Augustin M.;Mpiana, Pius T.. And the article was included in American Chemical Science Journal in 2016.Category: esters-buliding-blocks The following contents are mentioned in the article:

Organic acids and their derivatives like Bu stearate have recently shown antisickling activity. Some none aromatic esters were synthesized and tested for their antisickling activity using Emmel test. On 21 esters tested only three showed no antisickling activity. Bu palmitate, Pr palmitate, Bu stearate, Pr stearate and Me nonadecanoate showed interesting antisickling activity with a normalization rate higher than 70%. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Category: esters-buliding-blocks).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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. Category: esters-buliding-blocks

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

Essential oil of some seasonal flowering plants grown in Saudi Arabia was written by Al-Mazroa, S. A.;Al-Wahaibi, L. H.;Mousa, A. A.;Al-Khathlan, H. Z.. And the article was included in Arabian Journal of Chemistry in 2015.Formula: C20H40O2 The following contents are mentioned in the article:

The constituents of the essential oils of Rumex vesicarius, Erucaria hispanica, Schimpera arabica, Savignya parviflora, Horwoodia dicksoniae, Sisymbrium irio, Plantago amplexicaulis, Plantago boissieri, Arnebia linearifolia, Foeniculum vulgare, Trigonella hamosa, Lotus halophilus, Reseda muricata, Cenchrus ciliaris is reported. These oils were analyzed by GC/MS and most of them are being studied for the first time. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Formula: C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) 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. 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: C20H40O2

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

Triflic acid-mediated synthesis of thioglycosides was written by Escopy, Samira;Singh, Yashapal;Demchenko, Alexei V.. And the article was included in Organic & Biomolecular Chemistry in 2019.Formula: C16H22O11 The following contents are mentioned in the article:

An efficient synthesis of thioglycosides from per-acetates in the presence of triflic acid is described. The developed protocol features high reaction rates and product yields. Some reactive sugar series give high efficiency in the presence of sub-stoichiometric trifluoromethanesulfonic acid (TfOH) in contrast to other known protocols that require multiple equivalent of Lewis acids to reach high conversion rates. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Formula: C16H22O11).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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, including apples, durians, pears, bananas, pineapples, and strawberries. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Formula: C16H22O11

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

Improved synthesis of benorilate was written by Chen, Xubing;Chen, Guangyong;Shi, Guirong;Liu, Guangming. And the article was included in Dali Xueyuan Xuebao in 2009.SDS of cas: 5003-48-5 The following contents are mentioned in the article:

Objective: To optimize the synthetic method of benorilate. Methods: When acetylsalicyl chloride was synthesized, DMF was added as catalyst, and benorilate was obtained in the presence of tetra-Bu ammonium bromide phase transfer catalyst. Results: Benorilate was synthesized with an overall yield of 90.8%. Conclusion: This synthetic route had a mild reaction condition and improved yield, and was easily controlled. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5SDS of cas: 5003-48-5).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) 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. 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.SDS of cas: 5003-48-5

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

Structure-activity relationships in salicylic and benzoic acid derivatives was written by Mager, P. P.;Wenzel, U.. And the article was included in Zentralblatt fuer Pharmazie, Pharmakotherapie und Laboratoriumsdiagnostik in 1979.Synthetic Route of C17H15NO5 The following contents are mentioned in the article:

Structure activity relationships of benzoic- and salicylic acid derivatives on antiinflammatory and antirheumatic activities, membrane permeability, protein binding, etc., by using multivariable anal. in combination with variant bioassay are described. The study demonstrated the significance of a variable spectrum of activities. The multidimensional correlation indicates that the information obtained in this case is not only additive but multiplicative. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Synthetic Route of C17H15NO5).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) 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. 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.Synthetic Route of C17H15NO5

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