Category: alcohols-buliding-blocks

Manetti, Fabrizio published the artcileParallel Solution-Phase and Microwave-Assisted Synthesis of New S-DABO Derivatives Endowed with Subnanomolar Anti-HIV-1 Activity, Name: (4-Butoxyphenyl)methanol, the main research area is arylthiopyrimidinone preparation HIV 1 transcriptase inhibitor.

A simple and efficient methodol. for the parallel solution-phase synthesis has been set up to obtain a series of thiouracils, in turn selectively S-benzylated under microwave irradiation to give new S-DABOs. Biol. screening led to the identification of compounds with nanomolar activity toward both the highly purified recombinant human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) enzyme (wild-type and mutants) and wild-type (wt) and mutant HIV-1 strains. In particular, I was found to be the most potent S-DABO reported so far (ID50 = 26 nM toward the isolated wt enzyme) with subnanomolar activity toward both the wt and the pluriresistant virus (IRLL98) HIV-1 strain (EC50 < 0.14 nM and EC50 = 0.22 nM, resp.). Mol. modeling calculations were also performed to investigate the binding mode of such compounds onto the non-nucleoside reverse transcriptase inhibitor binding site and to rationalize the relationships between their chem. structure and activity values toward wt RT. Journal of Medicinal Chemistry published new progress about Homo sapiens. 6214-45-5 belongs to class alcohols-buliding-blocks, name is (4-Butoxyphenyl)methanol, and the molecular formula is C11H16O2, Name: (4-Butoxyphenyl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Guijie published the artcileStructural Characterization and Immunostimulatory Activity of Heteropolysaccharides from Fuzhuan Brick Tea, Synthetic Route of 59-23-4, the main research area is immunostimulatory heteropolysaccharide Fuzhuan brick tea; Fuzhuan brick tea; immunostimulatory activity; polysaccharides; structural characterization.

Fuzhuan brick tea (FBT), one of the unique dark teas, has various health-promoting functions. In the present study, one polysaccharide fraction, namely FBTPS-2-1, was extracted and purified from FBT, and its structure and potential immunostimulatory activity were investigated. The results showed that FBTPS-2-1,one of typical heteropolysaccharides, was mainly composed of Gal, Ara, and Glc with little molar content of Man, Rha, GalA, and GlcA in molar ratio of 46.59:22.13:13.57:8.20:6.02:2.12:1.38 and mol. weight of 748 kDa. The backbone of FBTPS-2-1 contained â†?)-β-D-Galp-(1â†?)-β-D-Galp-(1â†? â†?)-β-D-Galp-(1â†?)-α-D-Glcp-(1â†? â†?)-α-D-Glcp-(1â†?)-α-D-Glcp-(1â†? â†?)-α-D-Glcp-(1â†?)-β-D-Galp-(1â†? â†?)-β-D-Galp-(1â†?)-β-D-Galp-(1â†? â†?,6)-β-D-Galp-(1â†?)-β-D-Galp-(1â†?and â†?,6)-β-D-Galp-(1â†?,6)-β-D-Galp-(1â†? The linkages of branches in FBTPS-2-1 were mainly composed of α-L-Araf-(1â†?,6)-β-D-Galp-(1â†? â†?)-α-L-Araf-(1â†?,6)-β-D-Galp-(1â†? â†?)-β-D-Galp-(1â†?,6)-β-D-Galp-(1â†? α-L-Araf-(1â†?,5)-α-L-Araf-(1â†? â†?,5)-α-L-Araf-(1â†?)-α-L-Araf-(1â†? α-D-Galp-(1â†?,5)-α-L-Araf-(1â†?and â†?)-α-L-Araf-(1â†?)-β-D-Galp-(1â†? Furthermore, FBTPS-2-1 could increase the phagocytosis of macrophages and promote the secretion of NO and a variety of inflammatory cytokines, including TNF-α, IL-1β, and IL-6, indicating noticeable immune enhancement activity. Thus, FBTPS-2-1 could serve as a potentially functional food to improve human health by modulating the host immunoreaction.

Journal of Agricultural and Food Chemistry published new progress about Homo sapiens. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Synthetic Route of 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Pesesse, R. published the artcileMultimodal chemometric approach for the analysis of human exhaled breath in lung cancer patients by TD-GC × GC-TOFMS, Category: alcohols-buliding-blocks, the main research area is multimodal chemometrics human exhaled breath lung cancer GC TOFMS; Breath analysis; Comprehensive two-dimensional gas chromatography (GC × GC); Lung cancer; Statistics; Thermal desorption (TD); Time-of-flight mass spectrometry (TOFMS); Volatile organic compounds (VOCs).

Lung cancer is the deadliest cancer in developed countries. To reduce its mortality rate, it is important to enhance the authors’ capability to detect it at earlier stages by developing early diagnostic methods. In that context, the anal. of exhaled breath is an interesting approach because of the simplicity of the medical act and its non-invasiveness. Thermal desorption comprehensive two-dimensional gas chromatog. time of flight mass spectrometry (TD-GC × GC-TOFMS) has been used to characterize and compare the volatile content of human breath of lung cancer patients and healthy volunteers. On the sampling side, the contaminations induced by the bags membrane and further environmental migration of VOCs during and after the sampling have also been studied. Over a realistic period of 6 h, the concentration of contaminants inside the bag can increase from 2 to 3 folds based on simulated breath samples. On the data processing side, Fisher ratio (FR) and random forest (RF) approaches were applied and compared in regards to their ability to reduce the data dimensionality and to extract the significant information. Both approaches allow to efficiently smooth the background signal and extract significant features (27 for FR and 17 for RF). Principal component anal. (PCA) was used to evaluate the clustering capacity of the different models. For both approaches, a separation along PC-1 was obtained with a variance score around 35%. The combined model provides a partial separation with a PC-1 score of 52%. This proof-of-concept study further confirms the potential of breath anal. for cancer detection but also underlines the importance of quality control over the full anal. procedure, including the processing of the data.

Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences published new progress about Homo sapiens. 124-76-5 belongs to class alcohols-buliding-blocks, name is rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, and the molecular formula is C10H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Haag, Franziska published the artcileKey Food Furanones Furaneol and Sotolone Specifically Activate Distinct Odorant Receptors, Recommanded Product: 3-(Methylthio)propan-1-ol, the main research area is furanone furaneol sotolone food odorant receptor; GPCRs; HDMF; high-impact aroma compound; high-throughput screening; narrowly tuned.

Furanones formed during the Maillard reaction often are natural aroma-determining compounds found in numerous foods. Prominent economically relevant representatives are the structural homologues Furaneol and sotolone, which are important natural flavoring compounds because of their distinct caramel- and seasoning-like odor qualities. These, however, cannot be predicted by the odorants’ mol. shape, rather their receptors’ activation parameters help to decipher the encoding of odor quality. Here, the distinct odor qualities of Furaneol and sotolone suggested an activation of at least two out of our ca. 400 different odorant receptor types, which are the mol. biosensors of our chem. sense of olfaction. While an odorant receptor has been identified for sotolone, a receptor specific for Furaneol has been elusive. Using a bidirectional screening approach employing 616 receptor variants and 187 key food odorants in a HEK-293 cell-based luminescence assay, we newly identified OR5M3 as a receptor specifically activated by Furaneol and homofuraneol.

Journal of Agricultural and Food Chemistry published new progress about Homo sapiens. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Recommanded Product: 3-(Methylthio)propan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jiao, Lili published the artcileStudy on structure characterization of pectin from the steamed ginseng and the inhibition activity of lipid accumulation in oleic acid-induced HepG2 cells, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is pectin steamed ginseng oleic acid lipid accumulation; HepG2 cell; Lipid accumulation; Pectin; Steamed ginseng.

Two acid polysaccharides were obtained from steamed ginseng (GPS-1 and GPS-2) through water extraction, ion-exchange chromatog. and gel chromatog. The structural features and ability of the polysaccharides to inhibit lipid accumulation in oleic acid-induced HepG2 cells were studied. GPS-1 consisted of type I arabinogalactans (AG-I), arabinogalactans-II (AG-II) and rhamnogalacturonan I (RG-I) domains. GPS-2 was a pectin-like polysaccharide consisting mainly of the homogalacturonan (HG) domain and a small amount of AG domain. Both GPS-1 and GPS-2 had branches attaching on O-3 of (16)-GalA or O-4 of (1 2)-Rha and terminated by either Ara or Gal. An in vitro experiment revealed that GPS-1 treatment at 50-400 g/mL could dose-dependently decrease intracellular lipid accumulation and cholesterol (TC) and triglycerides (TG) levels. GPS-1 exerted a more serious hypolipidemic effect than GPS-2 did. Moreover, GPS-1 considerably increased the phosphorylation of AMP-activated protein kinase (AMPK) and affected the expression of AMPK downstream targets, including the inhibition of the protein expression of sterol regulatory element-binding protein 1c (SREBP-1c) and activation of Acetyl-CoA carboxylase (ACC). Results suggest that GPS-1 could inhibit lipid accumulation via the AMPK the signalling pathway.

International Journal of Biological Macromolecules published new progress about Homo sapiens. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lura, Ard published the artcileNew orodispersible mini-tablets for paediatric use – A comparison of isomalt with a mannitol based co-processed excipient, Synthetic Route of 64519-82-0, the main research area is minitablet isomalt mannitol excipient pediatrics; Functionalized excipients; Isomalt; Ludiflash®; Orodispersible mini-tablet; Paediatrics; Stability.

The development of orodispersible mini-tablets (ODMTs) for paediatric use has gained importance within recent years as European authorities set up regulations for developing suitable and palatable dosage forms for paediatric patients. Polyols like mannitol and isomalt are frequently used in the manufacture of tablets where sensory properties have to be taken into account. In literature, ODTMs based on a commercialized co-processed excipient based on mannitol (Ludiflash) have been already described. Isomalt is known for its pleasant sensory properties and therefore appears to be a good candidate for ODMTs. The feasibility of the direct compression grade of isomalt for the manufacture of ODMTs was assessed and compared to Ludiflash. Hydrochlorothiazide and enalapril maleate were chosen as model drugs and compressed to 2 mm mini-tablets. ODMTs could be obtained fulfilling the criteria of Ph.Eur. with disintegration times of 180 s or even the FDA limit of 30 s. Dissolution studies and mass variation were fulfilled for all mini-tablets. Acceptance values (AV) �15 were achieved for formulations based on both isomalt and Ludiflash. Stability data showed the change of disintegration time and tensile strength as a function of storing time, condition and excipient. Both excipients showed their potential for ODMTs for paediatric use.

International Journal of Pharmaceutics (Amsterdam, Netherlands) published new progress about Homo sapiens. 64519-82-0 belongs to class alcohols-buliding-blocks, name is (3R,4R,5R)-6-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexane-1,2,3,4,5-pentaol, and the molecular formula is C12H24O11, Synthetic Route of 64519-82-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jayawardena, Thilina U. published the artcileIsolation and purification of fucoidan fraction in Turbinaria ornata from the Maldives; Inflammation inhibitory potential under LPS stimulated conditions in in-vitro and in-vivo models, Related Products of alcohols-buliding-blocks, the main research area is Turbinaria fucoidan inflammation sulfated polysaccharides; Anti inflammation; Brown algae; Fucoidan; Nitric oxide; RAW 264.7; Turbinaria ornata.

Fucoidan, referred to as fucose containing sulfated polysaccharides (FCSP), is a polymer from brown algae cell wall that is reported to exhibit potential anti-inflammatory activity. In the present study, the fucoidans are extracted from Turbinaria ornata (TO) from the Maldives. The method involves enzyme assisted extraction and is modified in order to improve the effectiveness and purity of final product. Purified fucoidan fraction was identified as F10, and its chem. properties were verified via FTIR, 1H NMR and monosaccharide anal. Selected inflammatory mediators were studied to evaluate the anti-inflammatory potential using RAW 264.7 macrophages. F10 successfully inhibited NO production (IC50 = 30.83 ± 1.02 μg mL-1). F10 dose-dependently down-regulated iNOS, COX-2, and pro-inflammatory cytokines including PGE2 levels. The in vivo experiments were assisted by zebrafish embryo model. This exhibited reduction in ROS, NO expression levels. To our knowledge, this is the first report to illustrate potential anti-inflammatory activity of FCSPs extracted from the brown algae T. ornata. Concisely, the results suggest that fucoidan purified from T. ornata increases the macrophage cellular and zebrafish embryo resistance against LPS-induced inflammation. Based on the observations, the fucoidans are promising candidates to be used in the pharmaceutical and cosmeceutical sectors.

International Journal of Biological Macromolecules published new progress about Inflammation. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Banerjee, Pallavi published the artcileCoarse-Grained Molecular Model for the Glycosylphosphatidylinositol Anchor with and without Protein, Safety of n-Octanol, the main research area is model glycosylphosphatidylinositol anchor protein.

Glycosylphosphatidylinositol (GPI) anchors are a unique class of complex glycolipids that anchor a great variety of proteins to the extracellular leaflet of plasma membranes of eukaryotic cells. These anchors can exist either with or without an attached protein called GPI-anchored protein (GPI-AP) both in vitro and in vivo. Although GPIs are known to participate in a broad range of cellular functions, it is to a large extent unknown how these are related to GPI structure and composition Their conformational flexibility and microheterogeneity make it difficult to study them exptl. Simplified atomistic models are amenable to all-atom computer simulations in small lipid bilayer patches but not suitable for studying their partitioning and trafficking in complex and heterogeneous membranes. Here, the authors present a coarse-grained model of the GPI anchor constructed with a modified version of the MARTINI force field that is suited for modeling carbohydrates, proteins, and lipids in an aqueous environment using MARTINI’s polarizable water. The nonbonded interactions for sugars were reparametrized by calculating their partitioning free energies between polar and apolar phases. In addition, sugar-sugar interactions were optimized by adjusting the second virial coefficients of osmotic pressures for solutions of glucose, sucrose, and trehalose to match with exptl. data. With respect to the conformational dynamics of GPI-anchored green fluorescent protein, the accessible time scales are now at least an order of magnitude larger than for the all-atom system. This is particularly important for fine-tuning the mutual interactions of lipids, carbohydrates, and amino acids when comparing to exptl. results. The authors discuss the prospective use of the coarse-grained GPI model for studying protein-sorting and trafficking in membrane models.

Journal of Chemical Theory and Computation published new progress about Conformation. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Safety of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Huang, Daniel published the artcileGeometry meta-optimization, Application of 3-Pentanol, the main research area is hydrocarbon simulation modeling machine learning.

Recent work has demonstrated the promise of using machine-learned surrogates, in particular, Gaussian process (GP) surrogates, in reducing the number of electronic structure calculations (ESCs) needed to perform surrogate model based (SMB) geometry optimization. In this paper, we study geometry meta-optimization with GP surrogates where a SMB optimizer addnl. learns from its past “”experience”” performing geometry optimization. To validate this idea, we start with the simplest setting where a geometry meta-optimizer learns from previous optimizations of the same mol. with different initial-guess geometries. We give empirical evidence that geometry meta-optimization with GP surrogates is effective and requires less tuning compared to SMB optimization with GP surrogates on the ANI-1 dataset of off-equilibrium initial structures of small organic mols. Unlike SMB optimization where a surrogate should be immediately useful for optimizing a given geometry, a surrogate in geometry meta-optimization has more flexibility because it can distribute its ESC savings across a set of geometries. Indeed, we find that GP surrogates that preserve rotational invariance provide increased marginal ESC savings across geometries. As a more stringent test, we also apply geometry meta-optimization to conformational search on a hand-constructed dataset of hydrocarbons and alcs. We observe that while SMB optimization and geometry meta-optimization do save on ESCs, they also tend to miss higher energy conformers compared to standard geometry optimization. We believe that further research into characterizing the divergence between GP surrogates and potential energy surfaces is critical not only for advancing geometry meta-optimization but also for exploring the potential of machine-learned surrogates in geometry optimization in general. (c) 2022 American Institute of Physics.

Journal of Chemical Physics published new progress about Conformation. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Application of 3-Pentanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Guo, Rui published the artcilePectic polysaccharides from purple passion fruit peel: A comprehensive study in macromolecular and conformational characterizations, Quality Control of 59-23-4, the main research area is pectic polysaccharide purple passion fruit peel conformation; Conformational behavior; Macromolecular dimension; Passiflora edulis Sims f. edulis; Pectic polysaccharides; Purple passion fruit peel; Ultrasonic-aided ammonium oxalate extraction.

A polysaccharide (PFPP) from purple passion fruit peel was optimally extracted, with the highest yield (10.05%, weight/weight) obtained under 35°C extraction temperature, 240 W ultrasonic power, 65:1 mL/g liquid-to-solid ratio, 0.6% (w/v) ammonium oxalate, 30 min extraction time and pH 2.0. According to composition analyses, pectic PFPP and its fractions (PFPP-10, -15 and -20) were revealed as linear homogalacturonans interrupted by rhamnogalacturonan I in different lengths and extensities, where low esterification degrees (35.35-39.66%) were indicated via FT-IR. Furthermore, based on macromol. models, comprehensive analyses on macromol. and conformational characterizations of PFPP fractions were conducted quant. through, e.g., shape factor (1.42-1.79), Mark-Houwink-Sakurada exponent (0.55-0.74), conformational power-law exponent (0.52-0.58), fractal dimension (1.72-1.94) and persistence length (6.73-13.47 nm). Therefore, different semi-flexible coil conformations were proposed schematically, where lower mol.-weight PFPP fractions were less flexible. This could provide a mol. basis for precise re-utilizations of PFPP in food and pharmaceutical industries.

Carbohydrate Polymers published new progress about Conformation. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Quality Control of 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts