Tag: 100-200

Ivanovich, Ryan A.; Polat, Dilan E.; Beauchemin, Andre M. published an article in 2017, the title of the article was Oxygen-Substituted Isocyanates: Blocked (Masked) Isocyanates Enable Controlled Reactivity.COA of Formula: C9H11NO2 And the article contains the following content:

Oxygen-substituted isocyanates (O-isocyanates) are rare isocyanates with a reported propensity to trimerize, a side-reaction that severely limited their use in synthesis. Herein, the development of blocked (masked) O-isocyanate precursors that form this reactive intermediate in situ provide controlled reactivity, allowing the first examples of cascade reactions involving O-isocyanates. Complex hydroxylamine-derived hydantoins and dihydrouracil compounds can be rapidly assembled from α- and β-amino esters, illustrating the convenience of masked O-isocyanates as hydroxylamine derived building blocks. Evidence for the intermediacy of an O-isocyanate intermediate is provided. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).COA of Formula: C9H11NO2

The Article related to hydantoin preparation, dihydrouracil preparation, amino ester isocyanate cyclization, Heterocyclic Compounds (More Than One Hetero Atom): Imidazoles and other aspects.COA of Formula: C9H11NO2

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

On March 4, 2013, Kaboudin, Babak; Khodamorady, Minoo; Abedi, Yaghoub published an article.Application of 707-07-3 The title of the article was A Practical and Convenient Method for the Synthesis of Some Benzimidazoles. And the article contained the following:

A new method for the synthesis of some benzimidazoles by the reaction of o-phenylenediamines with orthoesters under solvent-free conditions without any additives such as base, acid or catalyst is reported. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).Application of 707-07-3

The Article related to phenylenediamine orthoester heterocyclization solventless, benzimidazole preparation, Heterocyclic Compounds (More Than One Hetero Atom): Imidazoles and other aspects.Application of 707-07-3

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

Siedler, Solvej; Lindner, Steffen N.; Bringer, Stephanie; Wendisch, Volker F.; Bott, Michael published an article in 2013, the title of the article was Reductive whole-cell biotransformation with Corynebacterium glutamicum: improvement of NADPH generation from glucose by a cyclized pentose phosphate pathway using pfkA and gapA deletion mutants.Related Products of 3976-69-0 And the article contains the following content:

In this study, the potential of Corynebacterium glutamicum for reductive whole-cell biotransformation is shown. The NADPH-dependent reduction of the prochiral Me acetoacetate (MAA) to the chiral (R)-Me 3-hydroxybutyrate (MHB) by an alc. dehydrogenase from Lactobacillus brevis (Lbadh) was used as model reaction and glucose served as substrate for the regeneration of NADPH. Since NADPH is mainly formed in the oxidative branch of the pentose phosphate pathway (PPP), C. glutamicum was engineered to redirect carbon flux towards the PPP. Mutants lacking the genes for 6-phosphofructokinase (pfkA) or glyceraldehyde 3-phosphate dehydrogenase (gapA) were constructed and analyzed with respect to growth, enzyme activities, and biotransformation performance. Both mutants showed strong growth defects in glucose minimal medium. For biotransformation of MAA to MHB using glucose as reductant, strains were transformed with an Lbadh expression plasmid. The wild type showed a specific MHB production rate of 3.1 mmolMHB h-1 g and a yield of 2.7 molMHB mol. The ΔpfkA mutant showed a similar MHB production rate, but reached a yield of 4.8 molMHB mol, approaching the maximal value of 6 molNADPH mol expected for a partially cyclized PPP. The specific biotransformation rate of the ΔgapA mutant was decreased by 62 % compared to the other strains, but the yield was increased to 7.9 molMHB mol, which to our knowledge is the highest one reported so far for this mode of NADPH regeneration. As one fourth of the glucose was converted to glycerol, the exptl. yield was close to the theor. maximal yield of 9 molNADPH mol. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Related Products of 3976-69-0

The Article related to corynebacterium nadph generation reductive biotransformation pfka gapa deletion, Fermentation and Bioindustrial Chemistry: Industrial Chemicals and other aspects.Related Products of 3976-69-0

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

On November 13, 2008, Bonnert, Roger Victor; McInally, Thomas; Thom, Stephen published a patent.Product Details of 142327-44-4 The title of the patent was Preparation of imidazoquinolines as TLR7 immunomodulators. And the patent contained the following:

Title compounds I [R1 = (un)substituted alkyl; Z1 = alkylene or cycloalkylene; X1 = NR5, NCOR5, CONR5, NR5CO, SO2NR5, etc.; Y1 = single bond or alkylene; each R2 independently = halo, CN, OH, thiol, alkyl, etc.; R3 = (un)substituted alkyl; each Ra independently = halo, CN, OH, thiol, alkyl, hydroxyalkyl, etc.; R5 = H, 3- to 8-membered saturated heterocyclic ring, (un)substituted alkyl or cycloalkyl; or R5 = alkylene which may be linked to a carbon atom within a alkylene group Z1 so as to form a saturated 4- to 7-membered nitrogen containing ring; with the proviso; m, n, p and q independently = 0-2; A = monocyclic or bicyclic aryl or monocyclic or bicyclic heteroaryl], and their pharmaceutically acceptable salts, are prepared and disclosed as toll-like receptors (TLR7) modulators. Thus, e.g., II was prepared in 8 steps starting from 4-hydroxyquinoline. II exhibited pEC50 value of 6.5 in human TLR7 assay. Having immuno-modulating properties via TLR7, I are useful in the treatment of viral or allergic diseases and cancers, etc. The experimental process involved the reaction of Methyl 2-(3-formylphenyl)acetate(cas: 142327-44-4).Product Details of 142327-44-4

The Article related to imidazoquinoline preparation tlr7 immunomodulator allergy antiviral antitumor, Heterocyclic Compounds (More Than One Hetero Atom): Imidazoles and other aspects.Product Details of 142327-44-4

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

On July 15, 2022, Cai, Liqin; Wang, Weijun; Tong, Jingwen; Fang, Luping; He, Xingfen; Xue, Qi; Li, Yanhua published an article.Recommanded Product: 123-25-1 The title of the article was Changes of bioactive substances in lactic acid bacteria and yeasts fermented kiwifruit extract during the fermentation. And the article contained the following:

Probiotic fermented fruit extract is a new kind of food with potential health care efficacy. In this study, transformation of bioactive substances in Lactic acid bacteria (LAB) and yeast fermented kiwifruit extract were researched. The highest levels of total polyphenol, superoxide dismutase (SOD) were found in Lactobacillus paracasei LG0260 fermented kiwifruit extract with 2.31 ± 0.06 mgGAE/g, 369 ± 12.73 U.mL-1, resp. LAB fermented kiwifruit extract dramatically had a highest vitamin C (VitC) concentration during the fermentation, while yeast and natural fermented samples were decline steadily. Another interesting founding, a highest level of γ-aminobutyric acid (GABA) was found in Saccharomyces cerevisiae J2861 fermented kiwifruit extract with 24.132 ± 1.01μg/mL. Furthermore, the main organic acids in fresh kiwifruit and yeast fermented kiwifruit extract were citric acid and malic acid. However, lactic acid and citric acid were the main organic acids in LAB fermented kiwifruit extract A total of 43 kinds of flavor compounds in fresh kiwifruit and 88 kinds of flavor compounds in fermented kiwifruit extract were identified. Esters and alcs. in fermented kiwifruit system increased by the fermentation of selected bacteria which improved the taste and flavor. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Recommanded Product: 123-25-1

The Article related to lactic acid bacteria yeast kiwifruit extract fermentation bioactive substance, Food and Feed Chemistry: Fruits, Vegetables, Legumes, and Nuts and other aspects.Recommanded Product: 123-25-1

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

On June 28, 2018, Liu, Phillip C.; Volgina, Alla; Wynn, Richard; Zolotarjova, Nina; Wu, Liangxing; Xiao, Kaijiong; Mei, Song; Lu, Liang; Zhu, Wenyu; Ye, Yingda; Wang, Haisheng; Qian, Ding-Quan; Yao, Wenqing published a patent.Computed Properties of 37480-41-4 The title of the patent was Synthesis of tetrahydroimidazo[4,5-c]pyridine derivatives as PD-L1 internalization inducers. And the patent contained the following:

Compositions of tetrahydroimidazo[4,5-c]pyridine derivatives I [Z = 5 to 14-membered heteroaryl, 4 to 14-membered heterocycloalkyl, C6-10 aryl, C3-10 cycloalkyl,m etc., L = bond, NH, O, C(O)NH, C(:NOH)NH, etc., R21, R22 = halo, C1-6 alkyl, CN, R23 = H, C1-6 alkyl, C1-6 haloalkyl, X = (R25)n, R25 = C1-4 alkyl, C1-4 alkoxy, C1-4 haloalkyl, etc., Y = (R26)m, R26 = C1-4 alkyl, CN, halo, OH, CO2H, etc., Z = (R27)p, R27 = H, halo, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, etc., n = 0-3, m = 0-3, p = 1-6, dotted bond = single or double bond to maintain the 5-membered imidazole ring aromaticity] and methods for inducing PD-L1 internalization are disclosed. The methods include reducing the amount of cell surface PD-L1 by contacting a cell expressing PD-L1 with a compound that binds to the cell surface PD-L1 and induces PD-L1 internalization. Compounds that induce PD-L1 internalization can be used to enhance, stimulate and/or increase an immune response and treat a PD-1-related disease or condition. The experimental process involved the reaction of Methyl 1-methyl-4-oxocyclohexanecarboxylate(cas: 37480-41-4).Computed Properties of 37480-41-4

The Article related to imidazopyridine preparation pd l1 internalization antitumor immunomodulator, Heterocyclic Compounds (More Than One Hetero Atom): Imidazoles and other aspects.Computed Properties of 37480-41-4

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

Gerocs, Annamaria; Nagy, Tibor; Nemes-Barnas, Katalin; Majer, Janos; Szoke, Barna Arpad; Kovago, Robert; Magalhaes, Frederico; Gibson, Brian; Szekeres, Andras; Juhasz, Akos; Posta, Katalin; Olasz, Ferenc published an article in 2022, the title of the article was Characterization of Saccharomyces Strains Isolated from “Keknyelu” Grape Must and Their Potential for Wine Production.Computed Properties of 123-25-1 And the article contains the following content:

Novel wine yeast strains have the potential to satisfy customer demand for new sensorial experiences and to ensure that wine producers have strains that can produce wine as efficiently as possible. In this respect, hybrid yeast strains have recently been the subject of intense research, as they are able to combine the favorable characteristics of both parental strains. In this study, two Saccharomyces “Keknyelu” grape juice isolates were identified by species-specific PCR and PCR-RFLP methods and investigated with respect to their wine fermentation potential. Physiol. characterization of the isolated strains was performed and included assessment of ethanol, sulfur dioxide, temperature and glucose (osmotic stress) tolerance, killer-toxin production, glucose fermentation ability at 16°C and 24°C, and laboratory-scale fermentation using sterile “Keknyelu” must. Volatile components of the final product were studied by gas chromatog. (GC) and mass spectrometry (MS). One isolate was identified as a S. cerevisiae × S. kudriavzevii hybrid and the other was S. cerevisiae. Both strains were characterized by high ethanol, sulfur dioxide and glucose tolerance, and the S. cerevisiae strain exhibited the killer phenotype. The hybrid isolate showed good glucose fermentation ability and achieved the lowest residual sugar content in wine. The ester production of the hybrid strain was high compared to the control S. cerevisiae starter strain, and this contributed to the fruity aroma of the wine. Both strains have good oenol. characteristics, but only the hybrid yeast has the potential for use in wine fermentation The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Computed Properties of 123-25-1

The Article related to saccharomyces cerevisiae kudriavzevii keknyelu grape wine fermentation, Food and Feed Chemistry: Fruits, Vegetables, Legumes, and Nuts and other aspects.Computed Properties of 123-25-1

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

On June 19, 2020, Yang, Zeyu; Ye, Wenjie; Xie, Youyu; Liu, Qinghai; Chen, Rong; Wang, Hualei; Wei, Dongzhi published an article.Application of 3976-69-0 The title of the article was Efficient Asymmetric Synthesis of Ethyl (S)-4-Chloro-3-hydroxybutyrate Using Alcohol Dehydrogenase SmADH31 with High Tolerance of Substrate and Product in a Monophasic Aqueous System. And the article contained the following:

Bioredns. catalyzed by alc. dehydrogenases (ADHs) play an important role in the synthesis of chiral alcs. However, the synthesis of Et (S)-4-chloro-3-hydroxybutyrate [(S)-CHBE], an important drug intermediate, has significant challenges concerning high substrate or product inhibition toward ADHs, which complicates its production Herein, we evaluated a novel ADH, SmADH31, obtained from the Stenotrophomonas maltophilia genome, which can tolerate extremely high concentrations (6 M) of both substrate and product. The coexpression of SmADH31 and glucose dehydrogenase from Bacillus subtilis in Escherichia coli meant that as much as 660 g L-1 (4.0 M) Et 4-chloroacetoacetate was completely converted into (S)-CHBE in a monophasic aqueous system with a >99.9% ee value and a high space-time yield (2664 g L-1 d-1). Mol. dynamics simulation shed light on the high activity and stereoselectivity of SmADH31. Moreover, five other optically pure chiral alcs. were synthesized at high concentrations (100-462 g L-1) as a result of the broad substrate spectrum of SmADH31. All these compounds act as important drug intermediates, demonstrating the industrial potential of SmADH31-mediated bioredns. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Application of 3976-69-0

The Article related to stenotrophomonas adh31 alc dehydrogenase stereoselective reduction, Fermentation and Bioindustrial Chemistry: Industrial Chemicals and other aspects.Application of 3976-69-0

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

Wang, Jing; Ma, Yuwen; Sam, Faisal Eudes; Gao, Pingping; Liang, Lihong; Peng, Shuai; Li, Min published an article in 2022, the title of the article was The Impact of Indigenous Non-Saccharomyces Yeasts Inoculated Fermentations on ‘Semillon’ Icewine.Computed Properties of 123-25-1 And the article contains the following content:

The emerging low acidity in icewine grapes is becoming a major problem in producing quality icewine. Using non-Saccharomyces cerevisiae yeasts in fermentation can improve wine’s organoleptic characteristics and aromatic quality. This study evaluated two indigenous non-Saccharomyces cerevisiae yeasts, Lachancea thermotolerans (LT-2) and Torulaspora delbrueckii (TD-3), for their ability to improve the acidity and quality of ‘Semillon’ icewine. Five different inoculation schemes were implemented, including a single inoculation of S. cerevisiae (SC), L. thermotolerans (LT), and T. delbrueckii (TD); the sequential inoculation of L. thermotolerans, followed by S. cerevisiae after 6 days (L-S); and the sequential inoculation of L. thermotolerans, followed by T. delbrueckii after 6 days (L-D). The results showed that, during sequential fermentation (L-S and L-D), the presence of S. cerevisiae or T. delbrueckii slightly restrained the growth of L. thermotolerans. Single or sequential inoculation with L. thermotolerans and T. delbrueckii significantly reduced the amount of volatile acidity and increased the glycerol content. Furthermore, fermentations involving L. thermotolerans produced relevant amounts of lactic acid (2.04-2.2 g/L) without excessive deacidification of the icewines. Addnl., sequential fermentations increased the concentration of terpenes, C13-norisoprenoid compounds, and phenethyl compounds A sensory anal. also revealed that sequentially fermented icewines (L-S and L-D) had more fruity and floral odors and aroma intensity. This study highlights the potential application of L. thermotolerans and T. delbrueckii in sequential fermentation to improve the icewine quality. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Computed Properties of 123-25-1

The Article related to semillon icewine saccharomyces yeast inoculated fermentation, Food and Feed Chemistry: Fruits, Vegetables, Legumes, and Nuts and other aspects.Computed Properties of 123-25-1

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

On August 21, 2020, Man, Ningning; Lou, Zhenbang; Li, Yuming; Yang, Haijun; Zhao, Yufen; Fu, Hua published an article.Reference of Methyl 2-cyclopentanonecarboxylate The title of the article was Organocatalytic Atroposelective Construction of Axially Chiral N-Aryl Benzimidazoles Involving Carbon-Carbon Bond Cleavage. And the article contained the following:

Axially chiral compounds widely occur in natural products, biol. active mols., ligands, and catalysts, and their efficient and enantioselective synthesis is highly desirable. Herein, we report a novel method for the atroposelective construction of axially chiral N-aryl benzimidazoles with chiral phosphoric acid as the organocatalyst via reaction of N1-(aryl)benzene-1,2-diamines with multicarbonyl compounds The present method provided the target products in high yields (up to 89%) with excellent enantioselectivity (up to 98% ee). The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Reference of Methyl 2-cyclopentanonecarboxylate

The Article related to axial chiral aryl benzimidazole atroposelective synthesis, Heterocyclic Compounds (More Than One Hetero Atom): Imidazoles and other aspects.Reference of Methyl 2-cyclopentanonecarboxylate

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