Tag: M.W=150-200

Verma, Krishan K. published the artcileScreening of Some Novel 4, 5 Disubstituted 1, 2, 4-Triazole-3-thiones for Anticonvulsant Activity, SDS of cas: 104-01-8, the main research area is triazole thione anticonvulsant drug screening; GABA-AT; MES; Triazol-3-thiones; anticonvulsant activity; docking; scPTZ..

In the present study, we synthesized fifteen 4, 5-disubstituted 1, 2, 4-triazol- 3-thione derivatives and evaluated for anticonvulsant activity with neurotoxicity determination The synthesized compounds were characterized using FTIR, 1H-NMR and MS. The mol. docking study was also performed to study the interactions of compounds with LYS329 residue of gamma amino butyric acid aminotransferase (GABA-AT) using Autodock 4.2 software. The anticonvulsant activity was assessed by maximal electroshock (MES) test and s.c. pentylenetetrazol (scPTZ) tests. The neurotoxicity was assessed by rotarod ataxia test. In MES test, compounds 5a, 8a and 9a were found active at 100 mg/kg and five compounds were found active at 300 mg/kg dose after 1 h of administration. After 4 h of drug administration, only two compounds 8a and 9a exhibited protection at 100 mg/kg. In scPTZ test, three compounds 2a, 6a and 8a were found active at 100 mg/kg and 7a was active at 300 mg/kg after 1 h of test drug administration. Most of the compounds were found active in MES test with 8a and 9a being the most active among all. In docking study, 2a was found to be best compound based on the binding energy of -6.5 kcal/mol and estimated inhibition constant of 17.2μM. Majority of synthesized compounds were found active in MES test, whereas only few were found to possess anti scPTZ activity. Among all compounds, only 14a caused motor coordination impairment in rotarod ataxia test at 300 mg/kg 1 h duration.

Central Nervous System Agents in Medicinal Chemistry published new progress about Anticonvulsants. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, SDS of cas: 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Z. published the artcileBacterial communities and volatile compounds in Doubanjiang, a Chinese traditional red pepper paste, Application of 5-Methyl-2-phenylhex-2-enal, the main research area is bacteria doubanjiang volatile compound; Doubanjiang; Pseudomonas; core bacterial community; partial least squares regression; volatile compounds.

Aim : To identify core bacterial communities and volatile compounds and to investigate their relationships in Doubanjiang, a Chinese traditional red pepper paste. Methods and Results : Two main culture-independent methods, polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and MiSeq sequencing technique, were used to investigate bacterial composition Headspace solid-phase microextraction combined with gas chromatog.-mass spectrometry (HS-SPME-GC-MS) was used to isolate and identify volatile organic compounds Partial least squares (PLS) regression and correlation coefficients analyses were used for elucidating the relationship between core bacterial community and volatile compounds Conclusions : Lactic acid bacteria (LAB) and Enterobacteriaceae family were identified primarily by the PCR-DGGE fingerprinting. Furthermore, the core microbiome (>1% average relative abundance) were indentified by Miseq sequencing technique, which mainly assigned to Proteobacteria, Cyanobacteria and Firmicutes phyla. For volatile profile, a total of 29 volatile compounds were identified by HP-SPME-GC-MS, mainly alcs., esters, aldehydes, ketones and phenols. PLS regression and Pearson’s correlation coefficients analyses revealed highly covariable relationships between volatile compounds and bacterial taxa. Notably, Pseudomonas most highly significantly associated with 3-Me butanal, 2-Me butanal, benzeneacetaldehyde and 2-acetylpyrrole (P < 0·001), and significantly correlated with 5-methylfurfural and 5-methyl-2-phenyl-2-hexenal (P < 0·01). Significance and Impact of the Study : Core bacterial communities were identified and the relationship between bacterial taxa and flavor compounds was revealed, these results could be beneficial for improving the quality of Doubanjiang. Journal of Applied Microbiology published new progress about Bacillus cereus. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Application of 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mitkov, Javor published the artcileSynthesis, in silico prediction of sites of metabolism and in-vitro hepatotoxicity evaluation of new series N′-substituted 3-(1,3,7-trimethyl-xanthin-8-ylthio) propanehydrazides, Recommanded Product: 2,3-Dimethoxybenzaldehyde, the main research area is trimethyl xanthinylthio propanehydrazide metabolism invitro hepatotoxicity evaluation.

New series of 3-(1,3,7-trimethyl-xanthin-8-ylthio)propanehydrazide derivatives were designed and synthesized. The targed compounds were obtained in yields of 54 to 100% and their structures were elucidated by FTIR,1H NMR,13C NMR, MS and microanalyses. The tested compounds were subjected to in silico prediction of sites of metabolism (SOMs). The predictions show thatthe main metabolic changes will be primarily related to oxidation of the sulfur atom in the side chain, carried out under the action of CYP2C19, as well as O-demethylation of compounds containing methoxy groups. The N-demethylation of the xanthine fragment was determined to be regulated by CYP1A2, CYP2C9, CYP2D6 and CYP3A4. Theperformed in vitro studies confirmed for two of the tested compounds to be low hepatotoxic, due to the presented prooxidant effects at subcellular level (isolated rat liver microsomes). These results highlight these mols. as promising hydrazide-hydrazone structures for the design of compounds with low hepatotoxicity.

Pharmacia (Sofia, Bulgaria) published new progress about Bioavailability. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Recommanded Product: 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Cai, Luyun published the artcileChange regularity of the characteristics of Maillard reaction products derived from xylose and Chinese shrimp waste hydrolysates, Synthetic Route of 21834-92-4, the main research area is Fenneropenaeus waste hydrolyzate xylose Maillard reaction product sensory property.

Chinese shrimp waste hydrolyzates (CSWHs) with or without xylose were heated with increasing time (0-180 min) at 115 °C, pH 8.0, to explored characteristics of Maillard reaction and the rules for the formation of flavor in hydrolyzates. The results suggested that CSWHs could be modified by Maillard reaction and exhibited stronger pleasant flavor than thermal degradation at proper heating time. During Maillard reaction, significant changes in Maillard reaction products (MRPs) were found, such as the accumulation of intermediate/browning/fluorescent products, the presentation of tempting reddish-brown, compared to Thermal degradation products (TDPs). Meanwhile, a series of volatile compounds and amino acids were found in MRPs, and combined with sensory evaluation, the MRPs exhibited strong meaty and seafood aroma as well as umami and mouthfulness taste. Therefore, Chinese shrimp waste could potentially be used to produce flavoring essence with strong enticing flavor and color.

LWT–Food Science and Technology published new progress about Browning (food). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Synthetic Route of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Yun published the artcileMachine learning bioactive compound solubilities in supercritical carbon dioxide, COA of Formula: C9H10O3, the main research area is machine learning bioactive compound solubility supercritical carbon dioxide.

The supercritical carbon dioxide (s.c.-CO2) is one of promising solvents for supercritical fluid extraction The solubility of bioactive compounds in the s.c.-CO2 is an important factor in designing the extraction process. Obtaining solubility data by experiments requires a large amount of resource and manpower. A model is highly sought if it is simple and can apply to a wide selection of solutes. We develop the Gaussian process regression model to study the relationship among the solute mol. weight, solute m.p., temperature, pressure, s.c.-CO2 d., and solubilities of 30 bioactive compounds in more than 1,000 scenarios. The model manifests a high degree of accuracy and stability, contributing to fast low-cost estimations of solubilities of a variety of bioactive compounds

Chemical Physics published new progress about Bioactive agents. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, COA of Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Delcaillau, Tristan published the artcilePalladium-Catalyzed Carbothiolation of Alkenes and Alkynes for the Synthesis of Heterocycles, Synthetic Route of 104-01-8, the main research area is oxindole thiomethyl preparation; amide alkenyl alkynyl chemoselective intramol carbothiolation palladium catalyst.

The intramol. carbothiolation of unsaturated hydrocarbons, e.g., I (R1 = Me, Et, i-Pr, cyclopentyl, Ph, etc.; R2 = Me, NCCH2, PhCH2, AcOCH2CH2, etc.; R3 = Me, 4-MeOC6H4, 2-naphthyl, 3-pyridyl, etc.), using a palladium-NHC catalyst (NHC = N-heterocyclic carbene) and giving access to a variety of heterocycles, e.g., II, is described. Herein, a single catalyst system enables both initial activation of a C(sp2)-S bond through oxidative addition and formation of a C(sp3)-S bond through a terminal reductive elimination, unlocking a completely atom-economical transfer across alkenes. The reaction tolerates a variety of different functional groups, exhibits excellent chemoselectivity in the presence of competing thioether moieties, and can be applied to various alkenes and alkynes. Furthermore, product derivatization was demonstrated to access a broad variety of sulfur-containing compounds

ACS Catalysis published new progress about Chemoselectivity. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Synthetic Route of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

da Silva, Ana C. published the artcileRhodium-catalyzed hydroformylation of allylbenzenes and propenylbenzenes: effect of phosphine and diphosphine ligands on chemo- and regioselectivity, Synthetic Route of 1205-17-0, the main research area is hydroformylation allylbenzene propenylbenzene rhodium phosphine diphosphine; regioselectivity hydroformylation allylbenzene propenylbenzene rhodium ligand effect; chemoselectivity hydroformylation allylbenzene propenylbenzene rhodium ligand effect.

Various allylbenzenes and propenylbenzenes have been hydroformylated with 97-99% chemoselectivity using bis[(μ-acetate)(1,5-cyclooctadiene)rhodium(I)] as catalyst precursor. Regioselectivity of the hydroformylation can be controlled by the nature of phosphorus auxiliary ligands. The Rh-NAPHOS [2,2′-bis[(diphenylphosphino)methyl]-1,1′-binaphthyl] system promotes the hydroformylation of allylbenzenes into linear aldehydes in near 95% selectivity and propenylbenzenes into branched aldehydes with a formyl group in the α-position to the Ph ring in near 90% selectivity, while the Rh-dppp [1,3-bis(diphenylphosphino)propane] system gives branched aldehydes with a formyl group in the β-position in near 70% selectivity starting from allylbenzenes. The regioselectivity of Rh-diphosphine systems correlates with a ligand bite angle. Both the rate and regioselectivity of the hydroformylation are largely influenced by the basicity of monophosphine auxiliary ligands; however, no correlation between their steric characteristics and the regioselectivity has been observed

Journal of Molecular Catalysis A: Chemical published new progress about Chemoselectivity. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Synthetic Route of 1205-17-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lee, Changgook published the artcileImproving the extraction of headspace volatile compounds: development of a headspace multi-temperature solid-phase micro-extraction-single shot-gas chromatography/mass spectrometry (mT-HSSPME-ss-GC/MS) method and application to characterization of ground coffee aroma, Recommanded Product: 5-Methyl-2-phenylhex-2-enal, the main research area is volatile compound HSSPME GCMS ground coffee aroma.

A multi-temperature headspace solid-phase micro-extraction-single shot-gas chromatog./mass spectrometry (mT-HSSPME-ss-GC/MS) method has been developed for headspace anal. Three SPME fibers (50/30 μm DVB/CAR/PDMS) were used simultaneously for the extraction of volatile components from the headspace of a sample in three sample chambers at three different temperatures A cryo-focusing technique was adopted to avoid peak broadening and to maximize resolution during the sequential thermal desorption of the SPME fibers prior to a ‘single-shot’ chromatog. run. The method was developed and validated on a model ethanolic flavor mixture, containing 81 components. Comparison of mT-HSSPME-ss-GC/MS (10 min incubation time, then 30 min extraction time at 22, 50, and 70 °C extraction temperatures) with conventional SPME-GC/MS at a fixed temperature of 22, 50, or 70 °C showed that the former gave a headspace GC profile of the flavor mixture that was much closer to that of the syringe (direct) injection profile. None of the conventional headspace SPME extraction profiles were a good match to the syringe injection profile. The same technique applied to the headspace of coffee grounds gave a plentiful headspace volatile component profile compared to that of a single SPME anal. at a fixed single extraction temperature (22, 50, and 70 °C). The average percent recovery (defined for each component as 100 × mT-SPME (22 °C + 50 °C + 70 °C) TIC peak intensity divided by the arithmetic sum of individual temperature SPME (22 °C, 50 °C, 70 °C) TIC peak intensities) was 89.8% and 132 components were detected by mT-SPME-ss-GC/MS in the headspace of coffee grounds.

Analytical Methods published new progress about Coffee beverages. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Recommanded Product: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Yuyu published the artcilePreparation and aroma analysis of Chinese traditional fermented flour paste, Safety of 5-Methyl-2-phenylhex-2-enal, the main research area is aroma compound Chinese traditional fermented flour paste.

Volatile compounds in Chinese fermented flour paste were extracted using simultaneous distillation and extraction (SDE) and analyzed using gas chromatog.-mass spectrometry (GC-MS) with DB-5 and DB-WAX capillary columns. A total of 84 volatile compounds were identified, including 8 aldehydes, 19 esters, 14 acids, 17 hydrocarbons, 7 heterocycles, and 19 other trace compounds The major volatiles included furfural, 5-methyl-2-phenyl-2-hexenal, 4-ethylguaiacol, 2-phenylacetaldehyde, Et hexadecanoate, isovaleraldehyde, palmitic acid, and 5-methylfurfural. Aroma compounds were investigated using gas chromatog.-olfactometry (GC-O) and aroma extract dilution anal. (AEDA). A total of 27 olfactory regions were exposed and 18 aroma extracts were located. Altogether, 6 aroma compounds identified using GC-O showed higher flavor dilution factors (FD≥32), including isovaleraldehyde, furfural, pentanoic acid, 2-acetylfuran, 1-octen-3-ol, and 2-phenylacetaldehyde. Compared with soybean sauce, fermented flour paste has more esters and aldehydes, which contribute to the desired fruity, caramel, sweet, and roasted odors.

Food Science and Biotechnology published new progress about Flours and Meals. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Safety of 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhong, Dayou published the artcileIron-Catalyzed Intramolecular C-H Amidation of N-Benzoyloxyureas, SDS of cas: 104-01-8, the main research area is arylimidazolidinone preparation; dihydro benzoimidazolon preparation; nitrogen benzoyloxyurea intramol carbon hydroen amidation catalyst iron.

A redox-neutral Fe-catalyzed intramol. C-H amidation of N-benzoyloxyureas was described. This methodol. employed a simple iron complex in situ generated from Fe(OTf)2 and bipyridine as the catalyst and N-benzoyloxyureas as the nitrene precursors without using exogenous oxidants. An array of cyclic ureas I [R1 = Me, n-hexane, Bn, etc.; R2 = Me, Ph, 2-naphthyl, etc.; R3 = H, Me] were synthesized via aliphatic C(sp3)-H amidation in excellent yields. In addition, this catalytic system was also amenable to aryl C(sp2)-H nitrene insertion to provide benzimidazolones II [R1 = Me; R4 = H, MeO, t-Bu, C(O)OMe] in moderate yields.

Chinese Journal of Chemistry published new progress about Amidation (C-H). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, SDS of cas: 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem