Tag: M.W=200-250

Johnson, Erik P. published the artcilePreparation of α-hydroxy-β-Fmoc amino acids from N-Boc amino acids, Safety of (R)-tert-Butyl (3-methyl-1-oxobutan-2-yl)carbamate, the publication is Synthesis (2011), 4023-4026, database is CAplus.

A general method for the conversion of N-Boc (Boc = tert-butoxycarbonyl) amino acids into their homologated α-hydroxy-β-Fmoc (Fmoc = 9-fluorenylmethoxycarbonyl) amino acids is described. The protocol involved preparation of the amino aldehyde by reduction of the corresponding Weinreb amides, hydrocyanation, and hydrolysis of the nitrile group, followed by reprotection of the amino acid as the Fmoc derivative

Synthesis published new progress about 106391-88-2. 106391-88-2 belongs to esters-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Amide,Aldehyde, name is (R)-tert-Butyl (3-methyl-1-oxobutan-2-yl)carbamate, and the molecular formula is C10H19NO3, Safety of (R)-tert-Butyl (3-methyl-1-oxobutan-2-yl)carbamate.

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

Hung, C. C. published the artcileComparison of bioassay methods for attractiveness of sex pheromone components to carambola fruit borer, Eucosma notanthes Meyrick, Application In Synthesis of 16974-11-1, the publication is Zhiwu Baohu Xuehui Huikan (1999), 41(3), 165-177, database is CAplus.

The attractiveness of different formulation lures to the carambolla fruit borer, Eucosma notanthes Meyrick was conducted with two bioassay methods, i.e., turntable and wind tunnel, in laboratory The results were also compared with those done in field test. The attractive period of sex pheromone lures to males was 2 to 4 h after light on, and peak attraction was 3 h after light on in the field. The attractive period was found 2-5 h after light on, and reactive rate was between 48 to 49.6% by wind tunnel test. The results of attractiveness of Z7DDA, Z8DDA, and Z9DDA to males were similar to those observed in the field. Only lures of Z8DDA exhibited bioactivity to males. The results of attractiveness of different dosages of Z8DDA to males in turntable test were similar to those of field test. The best attractiveness was obtained using 1 mg by turntable and field test, while lures below 10 μg exhibited attraction to males by wind tunnel. The results of attractiveness of different blend ratios of Z8DDA and E8DDA to males were same by using turntable (1 mg), wind tunnel (10 μg), and field test (1 mg). The blend ratios of Z8DDA and E8DDA at 100/0 or 99.5/0.5 showed more attractive to males then others. The lures containing more than 0.5% E8DDA lowered their attractiveness. Attractiveness of different blend ratios of Z8DDA and Z8DDOL were different by turntable, wind tunnel, and field test. Blend ratios testing with field test, turntable, and wind tunnel were best at Z8DDA/Z8DDOL=100/100, 100/0, and 100/5, resp.

Zhiwu Baohu Xuehui Huikan published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Application In Synthesis of 16974-11-1.

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

Hung, C. C. published the artcileIsolation, identification and field tests of the sex pheromone of the carambola fruit borer, Eucosma notanthes, Safety of (Z)-Dodec-9-en-1-yl acetate, the publication is Journal of Chemical Ecology (2001), 27(9), 1855-1866, database is CAplus and MEDLINE.

Two components, (Z)-8-dodecenyl acetate (Z8-12:Ac) and (Z)-8-dodecenol (Z8-12:OH), were isolated from sex pheromone glands of the carambola fruit borer, Eucosma notanthes, and were identified by GC, and GC-MS, chem. derivatization, and comparison of retention times. The ratio of the alc. to acetate in the sex pheromone extracts was 2.7. However, synthetic mixtures (1 mg) in ratios ranging from 0.5 to 1.5 were more effective than other blends in trapping male moths in field tests.

Journal of Chemical Ecology published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Safety of (Z)-Dodec-9-en-1-yl acetate.

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

Zhang, Siyu published the artcileLipase-catalyzed one-step regioselective synthesis of 1,2-dioctanoylgalloylglycerol in a solvent-free system: Optimization of reaction conditions and structural elucidation, HPLC of Formula: 121-79-9, the publication is Food Chemistry (2022), 132302, database is CAplus and MEDLINE.

A multi-functional galloylated structured lipid, 1,2-dioctanoylgalloylglycerol (DOGG), was synthesized enzymically via a regioselective transesterification of Pr gallate and trioctanoate using an immobilized food-grade Candida antarctica lipase B (Lipozyme 435) as the biocatalyst under solvent-free condition. The variables that affect the reaction, including reaction temperature, substrate ratio, reaction time, and enzyme load, were evaluated and optimized using Taguchi method and response surface methodol. Both methods predicted the same optimal reaction condition, resulting in a 68.8 ± 1.3% DOGG yield with reaction selectivity of 82.9 ± 0.6% at 90 °C, 25/1 trioctanoate/PG (mol/mol), 72 h reaction, and 25% enzyme load relative to the total substrate weight The structure of the reaction product was elucidated using NMR spectroscopy and ESI-HRMS, confirming the regioselectivity of the reaction. Enzyme retained 50% of its activity after 5 cycles of reuse. It is feasible to synthesize DOGG as a potential antioxidant and nutraceutical using Lipozyme 435.

Food Chemistry published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C13H16O2, HPLC of Formula: 121-79-9.

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

Zhang, Siyu published the artcileSolvent-free enzymatic synthesis of 1,2-dipalmitoylgalloylglycerol: Characterization and optimization of reaction condition, Category: esters-buliding-blocks, the publication is Food Chemistry (2021), 128604, database is CAplus and MEDLINE.

A novel diacylglycerol-based galloyl structured lipid, 1,2-dipalmitoylgalloylglycerol (DPGG), was synthesized using the enzymic transesterification of Pr gallate (PG) and tripalmitin under solvent-free condition. An immobilized and com. available food-grade Candida antarctica lipase B, Lipozyme 435, was used as the biocatalyst. The reaction variables that affect the yield of DPGG were optimized using a 33 full factorial design. At 70°C, DPGG was obtained at a yield of 33.0 ± 2.0% with PG conversion at 44.8 ± 1.8% when the following condition was used: 25 substrate molar ratio of tripalmitin to PG, 120 h reaction time, and 25% enzyme load relative to the total substrate weight The structure of reaction product was elucidated using Fourier-transform IR spectroscopy (FT-IR), electrospray ionization high-resolution accurate-mass tandem mass spectrometry (ESI-HRAM-MS/MS), and 1D and 2D NMR spectroscopy (NMR). The effects of different lipases and galloyl donors/acceptors on the transesterification were also investigated.

Food Chemistry published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C13H16O2, Category: esters-buliding-blocks.

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

Bijla, Laila published the artcileProximate Composition, Antioxidant Activity, Mineral and Lipid Profiling of Spent Coffee Grounds Collected in Morocco Reveal a Great Potential of Valorization, Product Details of C10H12O5, the publication is Waste and Biomass Valorization, database is CAplus.

Spent coffee grounds (SCGs) are a great pollution hazard towards the environment. However, SCGs may offer important opportunities of valorization. Here, we aimed at assessing SCGs valorization potential through physicochem. characterization. Proximate composition and SCG oil physicochem. traits were determined using official anal. methods. Mineral profiling was performed using inductively coupled plasma optical emission spectrometry. Total phenolic (TPC) and flavonoid content (TFC) along with antioxidant activity were also determined Proximate composition varied greatly among samples: Oil content (8.58 ± 0.01-18.55 ± 0.01%), protein content (13.87 ± 1.12-16.12 ± 1.30%), ash content (2.16 ± 0.01-3.61 ± 0.01%), and carbohydrates content (61.76 ± 1.21-70.37 ± 1.21%). Major elements were K (8323.23 ± 974.00), Ca (6181.18 ± 500.67), and Mg (2526.51 ± 204.64 mg kg-1). SCGs oil was rich in linoleic acid (43.20 ± 2.19%), palmitic acid (31.78 ± 2.02%), and oleic acid (12.68 ± 1.15%). Likewise, β-sitosterol was the most abundant sterol (44.70 ± 0.01%). SCGs contained important TFC (up to 32.18 ± 0.41 mg QE g-1) and TPC (up to 57.48 ± 0.10 mg GAE g-1) with great antioxidant activity as revealed by ABTS (up to 2.22 ± 0.01 mmol TE g-1), DPPH (up to 92.12 ± 0.22%) and FRAP (up to 93.94 ± 6.19 mg TE g-1) as well as DPPH IC50 (up to 53.73 ± 1.03 μg mL-1). SCGs, given their investigated physicochem. properties, present promising valorization opportunities for environment, food industry, pharmaceutical fields and agricultural sector.

Waste and Biomass Valorization published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, Product Details of C10H12O5.

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

Mohammed, Mona A. published the artcilePharmacological and metabolomic profiles of Musa acuminata wastes as a new potential source of anti-ulcerative colitis agents, SDS of cas: 121-79-9, the publication is Scientific Reports (2022), 12(1), 10595, database is CAplus and MEDLINE.

Musa acuminata (MA) is a popular fruit peels in the world. Non-food parts of the plant have been investigated for their antioxidant and anti-ulcerative colitis activity. Metabolomic approaches were found to be informative as a screening tool. It discovered different metabolites depending on statistical anal. The antioxidant activity content was measured by colorimetric method. Seventy six investigated metabolites were observed The identities of some of these markers were confirmed based on their MS² fragmentation and NMR spectroscopy. These include: cinnamic acid and its dimer 2-hydroxy-4-(4-methoxyphenyl)-1H-phenalen-1-one beside; gallic acid and flavonoids; quercetin, quercetin-3-O-β-D-glucoside, luteolin-7-O-β-D-glucopyranoside. GC/MS anal. of MA peels essential oil led to identification of 37 compounds The leaves, pseudostem and fruit peels extracts were tested for their safety and their anti-ulcerative colitis efficacy in rats. Rats were classified into: normal, pos., prednisolone reference group, MA extracts pretreated groups (250-500 mg/kg) for 2 wk followed by induction of ulcerative colitis by per-rectal infusion of 8% acetic acid. Macroscopic and microscopic examinations were done. Inflammatory markers (ANCA, CRP and Ilβ6) were measured in sera. The butanol extracts showed good antioxidant and anti-inflammatory activities as they ameliorated macroscopic and microscopic signs of ulcerative colitis and lowered the inflammatory markers compared to untreated group. MA wastes can be a potential source of bioactive metabolites for industrial use and future employment as promising anti-ulcerative colitis food supplements.

Scientific Reports published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, SDS of cas: 121-79-9.

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

Liu, Jui-Hsiang published the artcilePreparation and characterization of chiral polyacrylates end-capped with bornyl groups in the side chains, Category: esters-buliding-blocks, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2004), 42(5), 1075-1092, database is CAplus.

Chiral polyacrylates with bornyl end-capped side chains with four kinds of mesogenic moieties (azobenzene, biphenyl, benzoyloxy biphenyl, and Ph benzoate) were prepared The phase properties of the polymers were investigated with X-ray diffraction, differential scanning calorimetry, and polarizing optical microscopy. The thermogravimetric characteristics, the glass-transition temperatures and weight-average mol. weights, of the homopolymers were evaluated. The optical properties of the synthesized polymers in diluted solutions and in the thin-film state were also evaluated. The optical behavior of the composite films upon photoirradiation was investigated through the change in the transmittance of the probe light triggered by UV (365-nm) irradiation UV irradiation and heat treatment caused a reversible intensity change of the probe light at λ = 400 nm. The shrinkage of the photoisomerization of the composite films was also investigated with at. force microscopy. A spot contraction appeared on the surface when it was irradiated with a laser light spot. The contraction was recovered by heat treatment at 80° for 10 min.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C15H14O3, Category: esters-buliding-blocks.

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

Song, Renyuan published the artcileMolecularly imprinted solid-phase extraction of glutathione from urine samples, SDS of cas: 3052-61-7, the publication is Materials Science & Engineering, C: Materials for Biological Applications (2014), 69-75, database is CAplus and MEDLINE.

Molecularly imprinted polymer (MIP) particles for glutathione were synthesized through iniferter-controlled living radical precipitation polymerization (IRPP) under UV radiation at ambient temperature Static adsorption, solid-phase extraction, and high-performance liquid chromatog. were carried out to evaluate the adsorption properties and selective recognition characteristics of the polymers for glutathione and its structural analogs. The obtained IRPP-MIP particles exhibited a regularly spherical shape, rapid binding kinetics, high imprinting factor, and high selectivity compared with the MIP particles prepared using traditional free-radical precipitation polymerization The selective separation and enrichment of glutathione from the mixture of glycyl-glycine and glutathione disulfide could be achieved on the IRPP-MIP cartridge. The recoveries of glutathione, glycyl-glycine, and glutathione disulfide were 95.6% ± 3.65%, 29.5% ± 1.26%, and 49.9% ± 1.71%, resp. The detection limit (S/N = 3) of glutathione was 0.5 mg·L^– 1. The relative standard deviations (RSDs) for 10 replicate detections of 50 mg·L^– 1 of glutathione were 5.76%, and the linear range of the calibration curve was 0.5 mg·L^– 1 to 200 mg·L^– 1 under optimized conditions. The proposed approach was successfully applied to determine glutathione in spiked human urine samples with recoveries of 90.24% to 96.20% and RSDs of 0.48% to 5.67%.

Materials Science & Engineering, C: Materials for Biological Applications published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C17H14O5, SDS of cas: 3052-61-7.

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

Byers, J. R. published the artcileIdentification of sex pheromones of Leucania anteoclara Sm. and Leucania commoides Gn. (Lepidoptera: Noctuidae: Hadeninae), Related Products of esters-buliding-blocks, the publication is Journal of Chemical Ecology (1997), 23(2), 473-485, database is CAplus.

The sex pheromone components of two species of Leucania that occur sympatrically in western Canada were identified in abdomen-tip extracts from calling female moths. (Z)-11-hexadecenyl acetate was the main component and (Z)-9-tetradecenyl acetate the second component in both species. The third component necessary for specific attractancy was (Z)-11-hexadecenyl aldehyde for L. anteoclara and (Z)-11-hexadecenyl alc. for L. commoides. The third component for each species was an attractant inhibitor when added as a fourth component to the attractant blend for the reciprocal species. The most effective synthetic blend for the attraction of males in the field was Z9-14:Ac/Z11-16:Ac/Z11-16:Ald in a ratio of 1:10:4 for L. anteoclara and Z9-14:Ac/Z11-16:Ac/Z11-16:OH in a ratio of 5:4:1 for L. commoides.

Journal of Chemical Ecology published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Related Products of esters-buliding-blocks.

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