Tag: 200-300

On May 21, 2021, Perali, Ramu Sridhar; Boddu, Umamaheswara Rao; Sankar, Drisya Chittadi published an article.COA of Formula: C12H16O7 The title of the article was [1,2]- vs [2,3]-Wittig Rearrangement in Carbohydrate Derived Alkenyl Systems. And the article contained the following:

A simple and efficient strategy for the regio- and stereoselective synthesis of carbon-branched sugar derivatives is described. The successful implementation of Wittig rearrangement on substrates derived by Ferrier rearrangement of various glycals and 3-O-alkenyl glycals is studied extensively. A highly selective [1,2]- or [2,3]-Wittig rearrangement is revealed that provides a novel class of stereo-defined 3-C-branched glycals and C-glycosides, which are otherwise difficult to obtain. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).COA of Formula: C12H16O7

The Article related to crystal structure glycoside preparation, wittig alkenyl stereoselective ferrier rearrangement glycal glycoside preparation, Carbohydrates: Glycosides and other aspects.COA of Formula: C12H16O7

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

Ghouilem, Juba; Franco, Remi; Retailleau, Pascal; Alami, Mouad; Gandon, Vincent; Messaoudi, Samir published an article in 2020, the title of the article was Regio- and diastereoselective Pd-catalyzed synthesis of C2-aryl glycosides.Computed Properties of 2873-29-2 And the article contains the following content:

An efficient regio- and diastereoselective arylation method of readily available 2,3-glycals with various aryl iodides has been established. Using the Pd(OAc)2/AsPh3 pre-catalytic system, this protocol proved to be general to prepare a variety of substituted C2-aryl glycosides in good yields with complete diastereoselectivity. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).Computed Properties of 2873-29-2

The Article related to crystal structure, transition state regioselective stereoselective arylation catalyst glycal preparation glycoside, Carbohydrates: Glycosides and other aspects.Computed Properties of 2873-29-2

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

Dias, Catarina; Matos, Ana M.; Blasquez-Sanchez, Maria T.; Calado, Patricia; Martins, Alice; Daetwyler, Philipp; Ernst, Beat; Macedo, M. Paula; Colabufo, Nicola; Rauter, Amelia P. published an article in 2019, the title of the article was 2-Deoxyglycosylation towards more effective and bioavailable neuroprotective molecules inspired by nature.Name: (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate And the article contains the following content:

The neuroprotective role of natural polyphenols is well established but phenolics poor water solubility affects their bioavailability and bioactivity. Aiming to overcome this issue, we were encouraged to investigate the 2-deoxyglycosylation of natural or nature inspired neuroprotective mols., using glycals as easily accessed glycosyl donors. This robust methodol. allowed the generation of a set of new resveratrol and caffeic acid ester glycosides, envisioning more effective and bioavailable compounds Resveratrol 2-deoxyglycosides were more effective at protecting the neuronal cells from peroxide-induced cytotoxicity than resveratrol itself, while the caffeic acid ester glycoside also showed extraordinary neuroprotection activity. Coefficient partition measurements demonstrated the moderate lipophilicity of resveratrol glycosides, which Log D values are typical of a central nervous system (CNS) drug and ideal for blood-brain barrier (BBB) penetration. Passive permeation assessed by the parallel artificial membrane permeability assay (PAMPA) revealed that 2,6-dideoxy-L-arabino-hexopyranosides were more effective than 2-deoxy-D-arabino-hexopyranosides. The lack of toxicity of the neuroprotective glycosides and their promising physicochem. properties revealed the usefulness of sugar coupling towards the modulation of natural product properties and bioactivity. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).Name: (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate

The Article related to resveratrol caffeic acid arabinohexopyranoside preparation bioavailability neuroprotective antitumor activity, Carbohydrates: Glycosides and other aspects.Name: (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate

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

Esteves, Henrique A.; Darbem, Mariana P.; Pimenta, Daniel C.; Stefani, Helio A. published an article in 2019, the title of the article was Carbonylative Negishi-Type Coupling of 2-Iodoglycals with Alkyl and Aryl Halides.SDS of cas: 2873-29-2 And the article contains the following content:

C-Glycosides are valuable organic compounds in the field of medicinal chem. due to their ubiquity inside living systems and pronounced biol. activity. Herein, we describe an approach to alkyl-ketones bearing glycal units, e.g. I, via the Pd-catalyzed carbonylative coupling of 2-iodoglycals and alkyl and aryl halides. Examples bearing a variety of functional groups are presented as well as a mechanistic proposal for this transformation. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).SDS of cas: 2873-29-2

The Article related to carbonylative, glycoside preparation negishi coupling iodoglycal halide alkylketone glycosylation catalyst, Carbohydrates: Glycosides and other aspects.SDS of cas: 2873-29-2

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

On December 29, 2020, Shinozuka, Tsuyoshi published an article.HPLC of Formula: 2873-29-2 The title of the article was Synthesis of Benzyl 2-Deoxy-C-Glycosides. And the article contained the following:

A synthetic method for benzyl 2-deoxy-C-glycosides has been developed. Palladium-catalyzed benzyl C-glycosylation of TIPS-protected 1-tributylstannyl glycals with a variety of benzyl bromides provided protected benzyl C-glycals. In this reaction, the use of PdCl2(dppe) promoted a clean reaction, whereas the reaction was accelerated by the addition of Na2CO3. The subsequent transformations provided a novel class of benzyl 2-deoxy-C-glycosides. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).HPLC of Formula: 2873-29-2

The Article related to deoxyglycoside glycoside preparation palladium catalyzed benzyl stereoselective glycosylation glycal, Carbohydrates: Glycosides and other aspects.HPLC of Formula: 2873-29-2

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

On March 19, 2020, Chen, Peiran; Guo, Saisai; Zuo, Junfeng; Chu, Ruiji; He, Xu; Zhu, Guijiang published an article.Name: (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate The title of the article was Synthesis of 3-S- and 3-Se-glycals by using R-S-S-R and R-Se-Se-R as the nucleophile precursors promoted by Hf(OTf)4 and the temperature-dependent formation of the above-mentioned 3-S- and 3-Se products. And the article contained the following:

By using Hf(OTf)4 as the catalyst, under certain conditions, reaction of tri-O-acetyl-D-glucal and ((2R,3S)-3-acetoxy-2,3-dihydrofuran-2-yl)methyl acetate with alkyl(aryl) bi-sulfide/alkyl(aryl) bi-selenide as nucleophile precursor leads to temperature-dependent formation of C-1-S/Se and C-3-S/Se product. A temperature-dependent profile of the yield of these two products is given. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).Name: (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate

The Article related to ferrier rearrangement sulfuration selenylation catalyst hafnium triflate thioglycosylation, Carbohydrates: Glycosides and other aspects.Name: (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate

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

On March 19, 2021, Tremblay, Thomas; St-Gelais, Jacob; Houde, Maxime; Giguere, Denis published an article.SDS of cas: 2873-29-2 The title of the article was Polyfluoroglycoside Synthesis via Simple Alkylation of an Anomeric Hydroxyl Group: Access to Fluoroetoposide Analogues. And the article contained the following:

In this work, we have developed a new approach for the synthesis of fluoroglycoside analogs. This strategy used a simple alkylation protocol and allowed the installation of a simple aglyconic alkane with the β configuration. Moreover, the glycosylation of fluorinated glucoside analogs with 4′-demethylepipodophyllotoxin furnished novel fluoroetoposide analogs. In these cases, the α anomers were formed as major products with an S configuration at the C-4 of the aglycon. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).SDS of cas: 2873-29-2

The Article related to polyfluoroglycoside fluoroetoposide analog preparation anomeric hydroxyl group alkylation, Carbohydrates: Glycosides and other aspects.SDS of cas: 2873-29-2

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

Koseki, Yoshitaka; Watanabe, Toshihiro; Kamishima, Takaaki; Kwon, Eunsang; Kasai, Hitoshi published an article in 2019, the title of the article was Formation of Five-Membered Carbocycles from d-Glucose: A Concise Synthesis of 4-Hydroxy-2-(hydroxymethyl)cyclopentenone.Recommanded Product: (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate And the article contains the following content:

A concise synthesis of 4-hydroxy-2-(hydroxymethyl)cyclopentenone (I) has been accomplished from D-glucose by a three-step sequence that features a catalyst-free hydrothermal reaction of D-glucal, which is readily obtained from D-glucose. Optimization of the reaction conditions for synthesizing I was performed by changing the temperature and reaction time. The treatment of D-glucal under the optimal conditions, i.e., at 120 °C for 24 h, provided I in the highest isolated yield of 61%. I would become a versatile intermediate for the synthesis of various fine chems. having a cyclopentenone structure from cellulosic biomass. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).Recommanded Product: (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate

The Article related to hydroxy hydroxymethyl cyclopentenone synthesis catalyst free hydrothermal glucose, Carbohydrates: Glycosides and other aspects.Recommanded Product: (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate

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

On February 1, 2019, Sakamoto, Kana; Nagai, Masaki; Ebe, Yusuke; Yorimitsu, Hideki; Nishimura, Takahiro published an article.Related Products of 2873-29-2 The title of the article was Iridium-Catalyzed Direct Hydroarylation of Glycals via C-H Activation: Ligand-Controlled Stereoselective Synthesis of α- and β-C-Glycosyl Arenes. And the article contained the following:

Diastereoselective direct hydroarylation of glycals with aromatic compounds was realized by use of an iridium/binap catalyst, giving the corresponding C-glycosyl compounds in high yields. The use of binap with the different absolute configuration enabled the stereoselective synthesis of α- or β-C-glycosyl arenes irresp. of the chirality of the glycals. The method showing the high functional group tolerance provides an atom-economical access to C-glycosyl arenes by way of C-H bond activation. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).Related Products of 2873-29-2

The Article related to c aryl glycoside stereoselective hydroarylation iridium catalyzed glycosyl arene, Carbohydrates: Glycosides and other aspects.Related Products of 2873-29-2

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On October 31, 2020, Tewari, Sakshi; Sharma, Shilpi published an article.Product Details of 118-55-8 The title of the article was Rhizobial-metabolite based biocontrol of fusarium wilt in pigeon pea. And the article contained the following:

The application of rhizobial cells for improving pigeon pea fitness has been practiced for ages. As cell-based approaches have limitations, the focus is on the usage of cell-free formulations. In the present study exopolysaccharide (EPS) producing, plant health promoting Bradyrhizobium sp. IC-4059 was monitored for its biocontrol potential against Fusarium udum. Strain IC-4059, its EPS, and supernatant antagonized F.udum by 52.6%, 20.5%, and 48.1%, resp. in comparison to control. Diverse formulations prepared using EPS, supernatant, and cells of strain IC-4059 were: EPS based, supernatant based, IC-4059 liquid culture (rhizobia based), dual combination (IC-4059 cells + supernatant; IC-4059 cells + EPS; EPS + supernatant), and triple combination (IC-4059 cells + supernatant + EPS). The potency of these bioformulations was observed under in planta tubes followed by in vivo pot study, both in F.udum infested and non-infested sets taking pigeon pea cultivar UPAS-120 as a model crop. The study highlighted that seeds receiving triple combination exhibited significantly higher plant growth attributes, nodule enhancing, and disease suppressing activity in comparison to individual application of Bradyrhizobium. Antifungal compounds were analyzed by a metabolomic approach using UPLC-MS. Thus, the study disseminates the tripartite role of triple formulation as a plant growth stimulator, nodule enhancer, and disease suppressor, both under in vitro and in vivo conditions in the presence of phytopathogen F. udum. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).Product Details of 118-55-8

The Article related to exopolysaccharide bradyrhizobium biocontrol fusarium wilt cajanus, biocontrol, bradyrhizobium, exopolysaccharides, fusarium, nodulation, phytopathogen, Plant Biochemistry: Pathology and other aspects.Product Details of 118-55-8

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