Month: December 2022

Tamargo, Alba published the artcileSimulated gastrointestinal digestion of cranberry polyphenols under dynamic conditions and its impact on antiadhesive activity against uropathogenic bacteria, Category: alcohols-buliding-blocks, the publication is Food Chemistry (2022), 130871, database is CAplus and MEDLINE.

This study is the first dynamic simulation of gastrointestinal digestion of cranberry polyphenols [1 g cranberry extract per day (206.2 mg polyphenols) for 18 days]. Samples from the simulated ascending, transverse, and descending colon of the dynamic gastrointestinal simulator simgi were analyzed. Results showed that 67% of the total cranberry polyphenols were recovered after simulated gastrointestinal digestion. Specifically, benzoic acids, hydroxycinnamic acids, phenylpropionic acids, phenylacetic acids, and simple phenols were identified. Cranberry feeding modified colonic microbiota composition of Enterococcaceae population significantly. However, increments in microbial-derived short-chain fatty acids, particularly in butyric acid, were observed Finally, the simgi effluent during cranberry feeding showed significant antiadhesive activity against uropathogenic Escherichia coli (13.7 ± 1.59 % of inhibition). Understanding the role that gut microbiota plays in cranberry metabolism could help to elucidate its interaction with the human body and explain cranberry protective effects against urinary tract infections.

Food Chemistry published new progress about 621-37-4. 621-37-4 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Phenol,Natural product, name is 3-Hydroxyphenylacetic acid, and the molecular formula is C24H12, Category: alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

McPherson, Alexander published the artcileSearching for silver bullets: An alternative strategy for crystallizing macromolecules, Synthetic Route of 85618-21-9, the publication is Journal of Structural Biology (2006), 156(3), 387-406, database is CAplus and MEDLINE.

Based on a hypothesis that various small mols. might establish stabilizing, intermol., non covalent crosslinks in protein crystals and thereby promote lattice formation, the authors carried out three sep. experiments The authors assessed the impact of 200 chems. on the propensity of 81 different proteins and viruses to crystallize. The experiments were comprised of 18 240 vapor diffusion trials. A salient feature of the experiments was that, aside from the inclusion of the reagent mixes, only two fundamental crystallization conditions were used, 30% PEG 3350, and 50% Tacsimate at pH 7. Overall, 65 proteins (85%) were crystallized Most significant was that 35 of the 65 (54%) crystallized only in the presence of one or more reagent mixes, but not in control samples lacking any additives. Among the most promising types of reagent mixes were those composed of polyvalent, charged groups, such as di and tri carboxylic acids, diamino compounds, mols. bearing one or more sulfonyl or phosphate groups, and a broad range of common biochems., coenzymes, biol. effectors, and ligands. The authors propose that an alternate approach to crystallizing proteins might be developed, which employs a limited set of fundamental crystallization conditions combined with a broad screen of potentially useful small mol. additives.

Journal of Structural Biology published new progress about 85618-21-9. 85618-21-9 belongs to alcohols-buliding-blocks, auxiliary class Tetrahydropyran,Chiral,sulfides,Alcohol, name is (2R,3S,4S,5R,6S)-2-(Hydroxymethyl)-6-(octylthio)tetrahydro-2H-pyran-3,4,5-triol, and the molecular formula is C14H28O5S, Synthetic Route of 85618-21-9.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Yildirim, Ilknur published the artcileEnd-functionalized polylactides using a calcium-based precatalyst: Synthesis and insights by mass spectrometry, Name: ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2016), 54(3), 437-448, database is CAplus.

A simple and convenient method for the synthesis of end functionalized polylactides (PLAs) under mild conditions by ring opening polymerization (ROP) in the absence of potentially toxic catalysts is described. Various alcs. were used as initiators in combination with Ca[N(SiMe₃)₂]₂(THF)₂ as the precatalyst in THF at room temperature Tailored end functionalities were obtained in a controlled fashion. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-ToF-MS) and electrospray ionization quadrupole time of flight mass spectrometry (ESI-Q-ToF-MS) anal. were performed to investigate the end groups. The results confirmed that the end group fidelity was maintained in the isolated PLAs. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 20880-92-6. 20880-92-6 belongs to alcohols-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Chiral,Alcohol, name is ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, and the molecular formula is C24H20Ge, Name: ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Shafaei, Armaghan published the artcileSimultaneous quantitative analysis of polyphenolic compounds in human plasma by liquid chromatography tandem mass spectrometry, Recommanded Product: 1-Hydroxy-2-naphthoic acid, the publication is Journal of Separation Science (2019), 42(18), 2909-2921, database is CAplus and MEDLINE.

A diet rich in polyphenolic compounds has recognized health benefits, and as such is routinely monitored as part of dietary intervention studies. A method for the simultaneous determination of 36 phenolic compounds, including phenolic acids and flavonoids, using liquid chromatog. and tandem mass spectrometry is described here. The target analytes were quantified based on their specific mass spectral fragments using a selected reaction monitoring approach. A C18 column with embedded aromatic functionality ensured separation of all phenolic compounds studied which included several pairs of isomers. Sample preparation involved the use of β-glucuronidase to release the phenolic compounds from their conjugated forms. The intra-day and inter-day precision and accuracy was less than 7% for all phenolic compounds studied. Recoveries, where plasma was spiked with three different concentrations of the analytes, ranged from 95-115%. The limits of detection and quantification were 0.23-3.89 and 1.15-7.79 nM, resp. The method was successfully applied to real samples and the range reported for each phenolic compound, with the exception of hydroferulic acid, nordihydroguaiaretic acid, methylgallate, and m-coumaric acid, was at least an order of magnitude higher than the limit of quantification for the method.

Journal of Separation Science published new progress about 86-48-6. 86-48-6 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment,Natural product, name is 1-Hydroxy-2-naphthoic acid, and the molecular formula is C16H20N2, Recommanded Product: 1-Hydroxy-2-naphthoic acid.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Uddin, Jashim Md. published the artcileDesign, Synthesis, and Structure-Activity Relationship Studies of Fluorescent Inhibitors of Cycloxygenase-2 as Targeted Optical Imaging Agents, Computed Properties of 14703-69-6, the publication is Bioconjugate Chemistry (2013), 24(4), 712-723, database is CAplus and MEDLINE.

Cyclooxygenase-2 (COX-2) is an attractive target for mol. imaging because it is an inducible enzyme that is expressed in response to inflammatory and proliferative stimuli. Recently, the authors reported that conjugation of indomethacin with carboxy-X-rhodamine dyes results in the formation of effective, targeted, optical imaging agents able to detect COX-2 in inflammatory tissues and premalignant and malignant tumors. The present paper summarizes the details of the structure-activity relationship (SAR) studies performed for lead optimization of these dyes. A wide range of fluorescent conjugates were designed and synthesized, and each of them was tested for the ability to selectively inhibit COX-2 as the purified protein and in human cancer cells. The SAR study revealed that indomethacin conjugates are the best COX-2-targeted agents compared to the other carboxylic acid-containing nonsteroidal anti-inflammatory drugs (NSAIDs) or COX-2-selective inhibitors (COXIBs). An n-butyldiamide linker is optimal for tethering bulky fluorescent functionalities onto the NSAID or COXIB cores. The activity of conjugates also depends on the size, shape, and electronic properties of the organic fluorophores. These reagents are taken up by COX-2-expressing cells in culture, and the uptake is blocked by pretreatment with a COX inhibitor. In in vivo settings, these reagents become highly enriched in COX-2-expressing tumors compared to surrounding normal tissue, and they accumulate selectively in COX-2-expressing tumors as compared with COX-2-neg. tumors grown in mice. Thus, COX-2-targeted fluorescent inhibitors are useful for preclin. and clin. detection of lesions containing elevated levels of COX-2.

Bioconjugate Chemistry published new progress about 14703-69-6. 14703-69-6 belongs to alcohols-buliding-blocks, auxiliary class Amine,Benzene,Phenol, name is 3-(Methylamino)phenol, and the molecular formula is C4H5NS2, Computed Properties of 14703-69-6.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Barr, Rita published the artcileCatechols stimulate ferricyanide reduction in chloroplast photosystem II, Related Products of alcohols-buliding-blocks, the publication is Biochimica et Biophysica Acta, Bioenergetics (1979), 546(1), 77-83, database is CAplus and MEDLINE.

In isolated chloroplasts from Spinacia oleracea, where electron transport to photosystem I was blocked by the plastoquinone antagonist, dibromothymoquinone, lipophilic catechols in concentrations of 50-150 μM stimulated ferricyanide reduction in photosystem II and associated O evolution. Nonpermeating catechols, such as Tiron, were unable to stimulate this reaction. Those quinones, such as 2,5-dimethylbenzoquinone, which act as class III electron acceptors, did not stimulate ferricyanide reduction in photosystem II or associated O evolution when electron transport to photosystem I was blocked by dibromoquinone. Stimulation of ferricyanide reduction was not observed in Tris-treated chloroplasts, implying that electron donation to photosystem II by catechols is not responsible for the stimulation. Various mechanisms for this stimulation in class II chloroplasts are discussed.

Biochimica et Biophysica Acta, Bioenergetics published new progress about 1139-46-4. 1139-46-4 belongs to alcohols-buliding-blocks, auxiliary class Benzene,Phenol, name is 4-(2,4,4-Trimethylpentan-2-yl)benzene-1,2-diol, and the molecular formula is C14H22O2, Related Products of alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Morales-Rabanales, Quetzali Nicte published the artcileAntifungal properties of hybrid films containing the essential oil of Schinus molle: Protective effect against postharvest rot of tomato, COA of Formula: C10H18O, the publication is Food Control (2022), 108766, database is CAplus.

The control of postharvest diseases in tomatoes using hybrid films represents an efficient and inexpensive alternative to avoid economic losses. This work reports on the design, characterization, and in situ application of hybrid films containing chitosan combined with the leaf essential oil of Schinus molle (SmEO) as antifungal agents. These materials were tested in situ on Lycopersicon esculentum cv. uva showing symptoms of soft rot caused by Fusarium oxysporum. According to our anal. conditions, SmEO contained β-phellandrene (15.7%), α-phellandrene (12.1%), elemol (9.1%), apiole (6.4%) and camphene (6.2%) as the most abundant volatiles. Four distinct hybrid films were prepared from 1% chitosan combined with different amounts of SmEO (0.05, 0.1, 0.3 and 0.7% w/v) to generate four hybrid films named FSm1, FSm2, FSm3 and FSm4. The spectroscopic properties (FT-IR), texture and thickness (SEM), and optical properties (transmittance) of these films revealed that FSm3 and FSm4 had the best physicochem. and in situ antifungal properties to avoid conidial germination and mycelial proliferation of F. oxysporum. The fruits treated with films and essential oil showed a statistically significant delay (>50%) in mycelial growth compared with the control groups (p < 0.05) and a substantial decrease in conidial viability over 6 days (<2%). According to our results, FSm3 and FSm4 significantly avoided the in situ growth of F. oxysporum in tomatoes. Interestingly, all of the films significantly improved fruit firmness in comparison with untreated tomatoes (p < 0.05). The properties of the films reported in this work may improve the shelf life of Lycopersicon esculentum cv. uva.

Food Control published new progress about 106-25-2. 106-25-2 belongs to alcohols-buliding-blocks, auxiliary class Natural product, name is cis-3,7-Dimethyl-2,6-Octadien-1-Ol, and the molecular formula is C10H18O, COA of Formula: C10H18O.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Chae, Hee-Don published the artcileSAR optimization studies on modified salicylamides as a potential treatment for acute myeloid leukemia through inhibition of the CREB pathway, Computed Properties of 328-90-5, the publication is Bioorganic & Medicinal Chemistry Letters (2019), 29(16), 2307-2315, database is CAplus and MEDLINE.

Disruption of cyclic adenosine monophosphate response element binding protein (CREB) provides a potential new strategy to address acute leukemia, a disease associated with poor prognosis, and for which conventional treatment options often carry a significant risk of morbidity and mortality. We describe the structure-activity relationships (SAR) for a series of XX-650-23 derived from naphthol AS-E phosphate that disrupts binding and activation of CREB by the CREB-binding protein (CBP). Through the development of this series, we identified several salicylamides that are potent inhibitors of acute leukemia cell viability through inhibition of CREB-CBP interaction. Among them, a biphenyl salicylamide, compound 71, was identified as a potent inhibitor of CREB-CBP interaction with improved physicochem. properties relative to previously described derivatives of naphthol AS-E phosphate.

Bioorganic & Medicinal Chemistry Letters published new progress about 328-90-5. 328-90-5 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Carboxylic acid,Benzene,Phenol, name is 2-Hydroxy-4-(trifluoromethyl)benzoic acid, and the molecular formula is C8H5F3O3, Computed Properties of 328-90-5.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Fraga, Layanne Nascimento published the artcileBlood pressure and body fat % reduction is mainly related to flavanone phase II conjugates and minor extension by phenolic acid after long-term intake of orange juice, Formula: C8H8O3, the publication is Food & Function (2021), 12(22), 11278-11289, database is CAplus and MEDLINE.

Hesperidin and narirutin are the major flavanones present in orange juice, and they are associated with a reduction in risk of cardiometabolic disease. However, there is heterogeneity in their biol. responses, which is partly due to the large interindividual variation in these flavonoids bioavailability. We investigated the relation between interindividual variability in the excretion of phase II conjugates and gut-derived phenolic acids, and cardiometabolic biomarkers response. Seventy-four subjects, both men and women, were included in a single-arm study. Over the 60 days, volunteers consumed 500 mL of orange juice daily. All measurements and blood collections were performed before and after the intervention period. Moreover, 24 h urine collection was performed after first consumption. Individuals were stratified according to the excretion of phase II conjugates and, for the first time, according to phenolic acids in high, medium, and low excretors. Furthermore, for the first time, the ratio between phenolic acids and flavanones-phase II conjugates has shown groups with different metabolization patterns. Groups with a low or intermediate ratio, corresponding to a higher amount of phase II conjugates excreted, showed a significant reduction in body fat % and blood pressure. This finding suggests that these improvements could be associated in a major way to flavanones-phase II conjugates, as well as to phenolic acids and stratification of volunteers according to metabolite excretions could be a good strategy to better understand the effects of orange juice on metabolism and health.

Food & Function published new progress about 621-37-4. 621-37-4 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Phenol,Natural product, name is 3-Hydroxyphenylacetic acid, and the molecular formula is C8H8O3, Formula: C8H8O3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Simond, Mickael published the artcileExcess Molar Enthalpies of Water + Primary Alkanolamines with a Common N-C-C-O Skeleton, Name: 2-Aminobutan-1-ol, the publication is Journal of Chemical & Engineering Data (2021), 66(11), 4206-4214, database is CAplus.

The excess molar enthalpies of binary mixtures of 2-amino-ethan-1-ol (MEA) and 1-aminopropane-2-ol (MIPA), 2-amino-butan-1-ol (ABU), and 2-amino-2-methyl-propan-1-ol (AMP) with water were measured vs. temperatures from 318.15 to 393.15 K and at a pressure of 0.5 MPa. The Redlich-Kister equation was used to fit the exptl. data and to estimate the molar enthalpies of alkanolamine and water at infinite dilution The effect of the substitution of alkyl groups on the carbon of the hydroxyl function is discussed on the basis of mol. simulation results published on alkanolamines earlier.

Journal of Chemical & Engineering Data published new progress about 96-20-8. 96-20-8 belongs to alcohols-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Alcohol, name is 2-Aminobutan-1-ol, and the molecular formula is C14H14N2O2, Name: 2-Aminobutan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts