Category: 103-26-4

Zhang, Qingyu published the artcileAmphiphilic indoles as efficient phase-transfer green catalysts for bromination in water, COA of Formula: C10H10O2, the publication is ChemSusChem (2022), 15(12), e202200574, database is CAplus and MEDLINE.

Brominated compounds are important, but they are usually prepared in organic solvents. Here, efficient amphiphilic indole-based phase-transfer organocatalysts were developed for environmentally benign bromination reactions in water. As test reactions, hydroxybromination of olefins and aromatic bromination could be conducted in a greener and more sustainable manner compared with methods using organic solvents, producing the corresponding bromides in good yields. Some pure products could be obtained without column chromatog.

ChemSusChem published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C12H16N2O2, COA of Formula: C10H10O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Xiao, Yu published the artcileMetabolite profiling, antioxidant and α-glucosidase inhibitory activities of buckwheat processed by solid-state fermentation with Eurotium cristatum YL-1, Name: Methyl 3-phenyl-2-propenoate, the publication is Food Research International (2021), 110262, database is CAplus and MEDLINE.

Buckwheat was processed by solid-state fermentation (SSF) with the probiotic fungal strain Eurotium cristatum YL-1. The effects of SSF on the phytochem. content, as well as the antioxidant and α-glucosidase inhibitory activities, on buckwheat were revealed. Metabolite differences between non-fermented buckwheat (BW) and E. cristatum fermented buckwheat (FBW) were investigated by LC-MS/MS-based untargeted metabolomics. Results showed that 103 and 68 metabolites remarkably differed between BW and FBW in pos. and neg. ionization modes, resp. Most phenolic compounds and alkaloids were significantly up-regulated during SSF. Hydrolytic enzymes (i.e., β-glucosidase, α-amylase, protease, and cellulase) were produced by the filamentous fungus E. cristatum during SSF. In vitro spectrophotometric assays demonstrated that the total phenolics content, ferric reducing antioxidant power, reducing power, scavenging activities of DPPH radical and ABTS·+, and α-glucosidase inhibitory activity of buckwheat were considerably enhanced after processing by SSF with E. cristatum. Addnl., solvents with different polarities significantly influenced the antioxidant and α-glucosidase inhibitory activities of buckwheat extracts Our study indicated that processing by SSF with E. cristatum can greatly improve the phytochem. components of buckwheat and consequently contribute to its antioxidant and α-glucosidase inhibitory activities. SSF with E. cristatum is an innovative method for enhancing the health-promoting components and bioactivities of buckwheat.

Food Research International published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C12H17BO4S, Name: Methyl 3-phenyl-2-propenoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Li, Xiaonan published the artcileCloning and expression of Lactobacillus brevis β-glucosidase and its effect on the aroma of strawberry wine, Computed Properties of 103-26-4, the publication is Journal of Food Processing and Preservation (2022), 46(3), e16368, database is CAplus.

The aim of this study was to evaluate the effect of β-glucosidase (Lb0241) derived from Lactobacillus brevis on the aroma of strawberry wine. The recombinant Lb0241 was cloned and expressed in Escherichia coli BL21 (DE3). The effect of temperature, pH, and additives on the activity of Lb0241 and its substrate specificity and kinetic parameters were analyzed. Furthermore, the effects of Lb0241 on the aroma properties of strawberry wine were evaluated by SPME-GC-MS and sensory evaluation. Lb0241 showed remarkable specificity for β-glucoside and displayed the highest activity at pH 5.0 and 30°C, with a relative activity of 55% in 12% ethanol. Ni2+ and K+ could increase the activity of Lb0241, but Fe2+, urea, 2-hydroxy-1-ethanethiol, and sodium dodecyl sulfate showed the opposite effect. Lb0241 could increase the aroma-active volatiles of esters, terpenoids, and phenols, and decrease alcs. and volatile acids. Overall, Lb0241 showed promising prospects in terms of aroma release in strawberry wine. Practical applications : A notable part of non-volatile glycosidic precursors present in fruit wine constitutes a reserve of potential aroma-active mols. Thus, the hydrolysis of aromatic precursors could significantly enhance the aroma of fruit wine. Our results showed that the new β-glucosidase Lb0241, which was derived from Lactobacillus brevis T61, exhibited strong acid and ethanol resistance. Moreover, Lb0241 could effectively hydrolyze aromatic precursors and enhance the level of aroma compounds in strawberry wine. Therefore, Lb0241 has potential application prospects and economic value to improve the flavor of fruit wine.

Journal of Food Processing and Preservation published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C10H10O2, Computed Properties of 103-26-4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Hua, Yujiao published the artcileDifference of Chemical Compositions in Fu Zheng Fang with Different Dosage Forms Based on HPLC-Q-Exactive Orbitrap/MS Combined with Multivariate Statistical Analysis, Formula: C10H10O2, the publication is Current Pharmaceutical Analysis (2021), 17(6), 710-722, database is CAplus.

Fu Zheng Fang (FZF) is an important Chinese medicine prescription for tumor treatment in hospitals, which has two different types, traditional Chinese medicine (TCM) decoction pieces and TCM formula granules. Objective: This study aimed to determine the effective composition of the drug FZF. In this research, FZF decoction pieces and FZF formula granules were collected and their composition, determined by HPLC-Q-Exactive Orbitrap/MS, and multivariate statistical anal., was applied to distinguish differential metabolite patterns between two groups. A clear cut difference in the composition of the two groups was observed 124 differential chem. compositions could be identified in the pos. mode, while 59 differential chem. compositions could be identified in the neg. mode. The differential chem. compositions were mainly concentrated in flavonoids, organic acids, fatty acids, amino acid compounds, and presenting different change rules, mainly involved in two metabolic pathways; the flavonoid biosynthesis, and flavone and flavonol biosynthesis. Conclusion: This study provides basic information that may be of use in the formulation of the drug in different dosages and in the examination of their efficacy.

Current Pharmaceutical Analysis published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C10H10O2, Formula: C10H10O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Guo, Daoyi published the artcileDe Novo Biosynthesis of Methyl Cinnamate in Engineered Escherichia coli, Application of Methyl 3-phenyl-2-propenoate, the publication is Journal of Agricultural and Food Chemistry (2022), 70(25), 7736-7741, database is CAplus and MEDLINE.

Me cinnamate with a fruity balsamic odor is an important fragrance ingredient in perfumes and cosmetics. Chem. processes are currently the only means of producing Me cinnamate. But consumers prefer natural flavors. Therefore, it is necessary to design and develop microbial cell factories for the production of Me cinnamate. In this study, we established for the first time a biosynthetic pathway in engineered Escherichia coli for production of Me cinnamate from glucose. We further increased the Me cinnamate production to 302 mg/L by increasing the availability of the metabolic precursors. Finally, the titer was increased to 458 mg/L in a two-phase culture system.

Journal of Agricultural and Food Chemistry published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C10H10O2, Application of Methyl 3-phenyl-2-propenoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Liang, Yutong published the artcileAging of Volatile Organic Compounds in October 2017 Northern California Wildfire Plumes, Recommanded Product: Methyl 3-phenyl-2-propenoate, the publication is Environmental Science & Technology, database is CAplus and MEDLINE.

In the western United States, the number and severity of large wildfires have been growing for decades. Biomass burning (BB) is a major source of volatile organic compounds (VOCs) to the atm. both globally and regionally. Following emission, BB VOCs are oxidized while being transported downwind, producing ozone, secondary organic aerosols, and secondary hazardous VOCs. In this research, we measured VOCs using proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS) in an urban area 55-65 km downwind of the Oct. 2017 Northern California wildfires. Nonaromatic oxygenated compounds were the dominant component of BB VOCs measured. In the smoke plumes, the VOCs account for 70-75% of the total observed organic carbon, with the remainder being particulate matter (with a diameter of <2.5 μm, PM_2.5). We show that the correlation of VOCs with furan (primary BB VOC) and maleic anhydride (secondary BB VOC) can indicate the origin of the VOCs. This was further confirmed by the diurnal variations of the VOCs and their concentration-weighted trajectories. Oxidation during transport consumed highly reactive compounds including benzenoids, furanoids, and terpenoids and produced more oxygenated VOCs. Furthermore, wildfire VOCs altered the ozone formation regime and raised the O₃ levels in the San Francisco Bay Area.

Environmental Science & Technology published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C10H10O2, Recommanded Product: Methyl 3-phenyl-2-propenoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Wang, Xinchao published the artcileNative carboxyl group-assisted C-H acetoxylation of hydrocinnamic and phenylacetic acids, Recommanded Product: Methyl 3-phenyl-2-propenoate, the publication is Chemical Communications (Cambridge, United Kingdom) (2022), 58(32), 4993-4996, database is CAplus and MEDLINE.

A method of native carboxyl-assisted, Pd(II)-catalyzed ortho-C-H acetoxylation of both hydrocinnamic and phenylacetic acids 2-R-3-R¹-4-R²C₆H₂CH(R³)CH₂C(O)OH (R = H, Me, Cl, OCF₃, etc.; R¹ = Me, Br, CF₃, etc.; R² = Me, F, COOMe, etc.; R³ = H, Me, Et)/2-R⁴-3-R⁵-4-R⁶-5-R⁷C₆HC(R⁸)(R⁹)C(O)OH (R⁴ = H, Me, I, etc.; R⁵ = H, OMe, CF₃, etc.; R⁶ = F, OMe, COOMe, etc.; R⁷ = R⁸ = R⁸ = H, Me) that can be found in many biol. active mols. as the key moieties was reported. Based on the broad scope and the application potential showcased with drug mols., such as (ibuprofen, ketoprofen, and flurbiprofen) it is anticipated that this C-H acetoxylation reaction will find attractive applicability in future synthetic endeavors.

Chemical Communications (Cambridge, United Kingdom) published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C20H40O2, Recommanded Product: Methyl 3-phenyl-2-propenoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chen, Huan published the artcileBurn Intensity Drives the Alteration of Phenolic Lignin to (Poly) Aromatic Hydrocarbons as Revealed by Pyrolysis Gas Chromatography-Mass Spectrometry (Py-GC/MS), Quality Control of 103-26-4, the publication is Environmental Science & Technology, database is CAplus and MEDLINE.

High-intensity wildfires alter the chem. composition of organic matter, which is expected to be distinctly different from low-intensity prescribed fires. Herein, we used pyrolysis gas chromatog./mass spectrometry (Py-GC/MS), in conjunction with solid-state ¹³C NMR and Fourier transform IR (FT-IR) spectroscopy, to assess chem. alterations from three wildfires and a long-term frequent prescribed fire site. Our results showed that black ash formed under moderate intensity burns contained less aromatic (ArH), polyaromatic hydrocarbon (PAH), and nitrogen-containing compounds (Ntg) but more lignin (LgC) and phenol compounds (PhC), compared to white ash formed under high intensity burns. Both ¹³C NMR and FT-IR confirmed a higher relative percentage of carboxyl carbon in white ash, indicating the potential for higher water solubility and more mobile carbon, relative to black ash. Compared to wildfires, ash from low-intensity prescribed fire contained less ArH, PAH, and Ntg and more LgC and PhC. Controlled laboratory burning trials indicated that organic matter alteration was sensitive to the burn temperature, but not related to the fuel type (pine vs. fir) nor oxygen absence/presence at high burn temperatures This study concludes that higher burn temperatures resulted in higher (poly)aromatic carbon/nitrogen and lower lignin/phenol compounds

Environmental Science & Technology published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C10H10O2, Quality Control of 103-26-4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Huang, Yaling published the artcileVariation of Volatile Compounds and Corresponding Aroma Profiles in Chinese Steamed Bread by Various Yeast Species Fermented at Different Times, Safety of Methyl 3-phenyl-2-propenoate, the publication is Journal of Agricultural and Food Chemistry (2022), 70(12), 3795-3806, database is CAplus and MEDLINE.

To control the fermentation process of yeast-Chinese steamed bread (CSB), the volatile compounds and odor profiles of yeast-CSBs during fermentation were comprehensively investigated by sensory evaluation, gas chromatog.-mass spectrometry, gas chromatog.-olfactometry (GC-O), and odor activity value (OAV). Eight sensory attributes were established, and quant. descriptive anal. results showed that CF1303-CSB had intense sweet and sweet aftertaste attributes, CF1318-CSB was characterized by milky, wheaty, and yeasty attributes, while CL10138-CSB presented distinct sour, winy, and floury attributes. A total of 41 key aroma-active compounds were detected, and phenylethyl alc. was the most potent aroma compound with a flavor dilution (FD) of 1024. CF1303-CSB, CF1318-CSB, and CL10138-CSB contained 24, 22, and 21 key aroma compounds, resp., based on the OAV. These key aroma compounds can be used as the potential markers to monitor the yeast-CSBs during the fermentation process. Five compounds, including β-myrcene, 2-phenoxyethanol, Me cinnamate, guaiacol, and o-cresol, were first identified in CSB. These results provide theor. basis for processing and quality control of yeast-CSBs.

Journal of Agricultural and Food Chemistry published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C10H10O2, Safety of Methyl 3-phenyl-2-propenoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Vielhaber, Thomas published the artcileManganese-catalyzed homogeneous hydrogenation of ketones and conjugate reduction of α,β-unsaturated carboxylic acid derivatives: A chemoselective, robust, and phosphine-free in situ-protocol, Synthetic Route of 103-26-4, the publication is Applied Catalysis, A: General (2021), 118280, database is CAplus.

A user-friendly and glove-box-free catalytic protocol for the manganese-catalyzed hydrogenation of ketones RC(O)R¹ (R = Ph, 2-chlorophenyl, pyridin-3-yl, etc.; R¹ = Me, Et, Ph, etc.; RR¹ = -(CH₂)₅-, -(CH₂)₄-), 3-methylcyclohexan-1-one, isophorone and 1-indanone and conjugated C=C-bonds of esters and nitriles R²C(R³)=C(R⁴)R⁵ (R² = Ph, 4-bromophenyl, 3-cyanophenyl, etc.; R³ = H, Ph; R⁴ = methoxycarbonyl, (prop-2-en-1-yloxy)carbonyl, Ph, etc.; R⁵ = H, ethoxycarbonyl, CN) was communicated. The resp. catalyst is readily assembled in situ from the privileged [Mn(CO)₅Br] precursor and cheap 2-picolylamine. The catalytic transformations were performed in the presence of t-BuOK whereby the corresponding hydrogenation products were obtained in good to excellent yields. The described system offers a brisk and atom-efficient access to both secondary alcs. (RCH(OH)R¹, cyclohexanol, 3,5,5-trimethylcyclohex-2-en-1-ol and 1-indanol) and saturated esters R²(R³)CHCH(R⁴)R⁵ avoiding the use of oxygen-sensitive and expensive phosphine-based ligands.

Applied Catalysis, A: General published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C6H10O3, Synthetic Route of 103-26-4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics