Category: alcohols-buliding-blocks

Feng, Yuqin published the artcileRecent advances in Agaricus bisporus polysaccharides: Extraction, purification, physicochemical characterization and bioactivities, Category: alcohols-buliding-blocks, the main research area is review Agaricus polysaccharide galactose extraction physicochem property food composition.

Agaricus bisporus (A. bisporus), known as a cultivated mushroom or button mushroom, is a very important edible and medicinal basidiomycete fungus. The numerous health benefits of A. bisporus may be related to their polysaccharides, which have significant dietary value and bioactivity, including immunity stimulation and high antioxidant, anticancer, hepatoprotection, anti-inflammation and anti-obesity functions. In general, the extraction method of A. bisporus polysaccharides (ABPs) is relatively simple, and the yield from enzyme-assisted extraction is the highest among various extraction methods. The monosaccharide composition anal. revealed that ABPs mainly consist of glucose, galactose, fucose and xylose, which each have a backbone composed of (1→6)- and (1→4)-linked α-glucan or alternating (1→4)- and (1→6)-linked β-glucan. The biol. activity of ABPs may vary significantly depending on their source, composition, structural properties, and purity, and it is highly correlated with mol. weight (MW) and the monosaccharide components. Therefore, this review aims to introduce the extraction methods, chem. structure, and biol. activity of ABPs which may provide a theor. basis for the further development and utilization of polysaccharides and have important reference value for the future study of the relationship between structural features and biol. activities.

Process Biochemistry (Oxford, United Kingdom) published new progress about Agaricus bisporus. 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, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Guo published the artcileExtraction, structural characterization, and immunobiological activity of ABP Ia polysaccharide from Agaricus bisporus, Quality Control of 59-23-4, the main research area is Agaricus polysaccharide rhamnose arabinose splenocyte proliferation immunoregulatory activity; Agaricus bisporus polysaccharides; Extraction and structure; Immunobiological activity.

The extraction, purification, immunobiol. activities, and structure of Agaricus bisporus polysaccharides (ABP) were investigated. Especially we purified and identified the polysaccharides with the highest in vitro immunobiol. activity. The extraction conditions of ABP were optimized using single factor and orthogonal experiment ABP Ia was screened after double purification with DEAE-52 and Sephadex G-200 and showed the best immunoregulatory activity. UV spectra anal. and high-performance gel permeation chromatog. results indicated that the ABP Ia fraction did not contain any proteins or nucleotides and was a homogeneous polysaccharide with a relative mol. weight of 784 kDa. Gas chromatog. mass spectroscopy results showed that ABP Ia was a heteropolysaccharide consisting of ribose, rhamnose, arabinose, xylose, mannose, glucose, and galactose at a molar ratio of 2.08:4.61:2.45:22.25:36.45:89.22:1.55. FT-IR and periodic acid oxidation anal. indicated that ABP Ia was an α-pyran polysaccharide composed of 1 → 2 and 1 → 4 glycosidic bonds, as well as a possible 1 → 3 glycosidic bond. Furthermore, at. force microscopy revealed that ABP Ia polysaccharide chains twisted to form a rod-like architecture and, at a 5% concentration, aggregated into a tight structure similar to the shape of a stone forest. These findings identify ABP Ia as a potential functional food ingredient or pharmaceutical for immunoregulation.

International Journal of Biological Macromolecules published new progress about Agaricus bisporus. 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

Alboofetileh, Mehdi published the artcileEffect of different non-conventional extraction methods on the antibacterial and antiviral activity of fucoidans extracted from Nizamuddinia zanardinii, Related Products of alcohols-buliding-blocks, the main research area is Nizamuddinia antibacterial antiviral fucoidan non conventional extraction method; Antibacterial activity; Antiviral activity; Extraction methods; Fucoidans; Nizamuddinia zanardinii; Non-conventional techniques.

In the current study, fucoidans from brown alga Nizamuddinia zanardinii were isolated with conventional and non-conventional extraction procedures to evaluate the effects of recently introduced technologies on biochem. characteristics and saccharide composition of the extracts, along with their antibacterial, antiviral and cytotoxic properties. The results demonstrated that subcritical water extraction showed the highest fucoidans yield (13.15%), while the lowest yield was obtained using ultrasound extraction method (3.6%). The polysaccharide chains consisted of fucose, galactose, glucose, mannose and xylose, whose molar percentages differed according to the extraction method used. The weight mean average mol. weight of fucoidans varied between 444 and 1184 kDa. The FT-IR spectroscopy confirmed the presence of sulfate esters by bending vibration of C-O-S and stretching vibration of S=O peaks at 818 and 1250 cm-1, resp. Antibacterial assays showed that microwave- and subcritical water-extracted fucoidans inhibited the growth of E.coli and that enzyme-ultrasound, ultrasound-microwave and subcritical water extracted fucoidans exhibited inhibitory effects against P. aeruginosa at 2 mg/mL. Antiviral studies revealed that all the extracted fucoidans exerted strong antiviral activity against HSV-2 infection, with EC50 values in the 0.027-0.123 μg/mL range; indeed the viscozyme-extracted macromols. displayed the best selectivity index.

International Journal of Biological Macromolecules published new progress about Agarum clathratum. 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

Gorecki, Lukas published the artcilePhenothiazine-Tacrine Heterodimers: Pursuing Multitarget Directed Approach in Alzheimer’s Disease, COA of Formula: C4H11NO2, the main research area is phenothiazine tacrine heterodimer preparation Alzheimer’s cholinesterase inhibitor; Alzheimer’s disease; acetylcholinesterase; butyrylcholinesterase; multitarget directed ligands; phenothiazine; tacrine.

Since 2002, no clin. candidate against Alzheimer’s disease has reached the market; hence, an effective therapy is urgently needed. We followed the so-called “”multitarget directed ligand”” approach and designed 36 novel tacrine-phenothiazine heterodimers which were in vitro evaluated for their anticholinesterase properties. The assessment of the structure-activity relationships of such derivatives highlighted compound 1dC as a potent and selective acetylcholinesterase inhibitor with IC50 = 8 nM and 1aA as a potent butyrylcholinesterase inhibitor with IC50 = 15 nM. Selected hybrids, namely, 1aC, 1bC, 1cC, 1dC, and 2dC, showed a significant inhibitory activity toward τ(306-336) peptide aggregation with percent inhibition ranging from 50.5 to 62.1%. Likewise, 1dC and 2dC exerted a remarkable ability to inhibit self-induced Aβ1-42 aggregation. Notwithstanding, in vitro studies displayed cytotoxicity toward HepG2 cells and cerebellar granule neurons; no pathophysiol. abnormality was observed when 1dC was administered to mice at 14 mg/kg (i.p.). 1dC was also able to permeate to the CNS as shown by in vitro and in vivo models. The maximum brain concentration was close to the IC50 value for acetylcholinesterase inhibition with a relatively slow elimination half-time. 1dC showed an acceptable safety and good pharmacokinetic properties and a multifunctional biol. profile.

ACS Chemical Neuroscience published new progress about Alzheimer disease. 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, COA of Formula: C4H11NO2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Uliassi, Elisa published the artcileA Focused Library of Psychotropic Analogues with Neuroprotective and Neuroregenerative Potential, Recommanded Product: 2,2-Dimethoxyethanamine, the main research area is phenothiazin synthesis psychotropic neuroprotectant blood brain barrier neurodegenerative disease; Neurodegenerative diseases; neural regeneration; neuroprotection; phenothiazines; phenotypic screening; psychotropic agents.

Overcoming the lack of effective treatments and the continuous clin. trial failures in neurodegenerative drug discovery might require a shift from the prevailing paradigm targeting pathogenesis to the one targeting simultaneously neuroprotection and neuroregeneration. In the studies reported herein, we sought to identify small mols. that might exert neuroprotective and neuroregenerative potential as tools against neurodegenerative diseases. In doing so, we started from the reported neuroprotective/neuroregenerative mechanisms of psychotropic drugs featuring a tricyclic alkylamine scaffold. Thus, we designed a focused-chem. library of 36 entries aimed at exploring the structural requirements for efficient neuroprotective/neuroregenerative cellular activity, without the manifestation of toxicity. To this aim, we developed a synthetic protocol, which overcame the limited applicability of previously reported procedures. Next, we evaluated the synthesized compounds through a phenotypic screening pipeline, based on primary neuronal systems. Phenothiazine 2Bc showed improved neuroregenerative and neuroprotective properties with respect to reference drug desipramine (2Aa). Importantly, we have also shown that 2Bc outperformed currently available drugs in cell models of Alzheimer’s and Parkinson’s diseases and attenuates microglial activation by reducing iNOS expression.

ACS Chemical Neuroscience published new progress about Alzheimer disease. 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, Recommanded Product: 2,2-Dimethoxyethanamine.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cheng, Zhi-Qiang published the artcileMolecular-docking-guided design and synthesis of new IAA-tacrine hybrids as multifunctional AChE/BChE inhibitors, Product Details of C4H11NO2, the main research area is indoleacetic acid tacrine synthesis antiAlzheimer pharmacokinetics acetylcholinesterase butyrylcholinesterase; Alzheimer’s disease; Dual AChE/BChE inhibitor; IAA-tacrine hybrids; Molecular docking; Neural network electrical activity.

A series of new indole-3-acetic acid (IAA)-tacrine hybrids as dual acetylcholinesterase (AChE)/butyrylcholinesterase (BChE) inhibitors were designed and prepared based on the mol. docking mode of AChE with an IAA derivative (1a), a moderate AChE inhibitor identified by screening our compound library for anti-Alzheimer’s disease (AD) drug leads. The enzyme assay results revealed that some hybrids, e.g. 5d and 5e, displayed potent dual in vitro inhibitory activities against AChE/BChE with IC50 values in low nanomolar range. Mol. modeling studies in tandem with kinetic anal. suggest that these hybrids target both catalytic active site and peripheral anionic site of cholinesterase (ChE). Mol. dynamic simulations and Mol. Mechanics/Poisson-Boltzmann Surface Area (MM-PBSA) calculations indicate that 5e has more potent binding affinity than hit 1a, which may explain the stronger inhibitory effect of 5e on AChE. Furthermore, their predicted pharmacokinetic properties and in vitro influences on mouse brain neural network elec. activity were discussed. Taken together, compound 5e can be highlighted as a lead compound worthy of further optimization for designing new anti-AD drugs.

Bioorganic Chemistry published new progress about Alzheimer disease. 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, Product Details of C4H11NO2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Tosatti, Jessica Abdo Goncalves published the artcileEffects of Resveratrol Supplementation on the Cognitive Function of Patients with Alzheimer’s Disease: A Systematic Review of Randomized Controlled Trials, Related Products of alcohols-buliding-blocks, the main research area is review resveratrol neuroprotective agent Alzheimers disease.

Alzheimers disease (AD) comprises 60-70% of diagnosed dementia cases, and is characterized by the deposition of β-amyloid peptide and the formation of neurofibrillary tangles of tau protein. Resveratrol is a neuroprotective agent acting in the prevention of redox impairment in addition to exerting anti-apoptotic actions on brain cells. An ability to reduce neuronal damage in patients with AD has been suggested by preclin. studies. Objectives: The aim of this systematic review was to investigate the evidence in the published literature from studies that evaluated the effects of supplementation with resveratrol, alone or in a solution with glucose and malate (RGM), on the functional and cognitive performance of patients with AD, as assessed by validated instruments. A systematic literature search was performed in MEDLINE, CENTRAL, Embase, CINAHL, Web of Science, and Scopus databases including articles published up to August 2021. Randomized, placebo-controlled, clin. trials that reported cognitive and functional performance, as measured by the Alzheimer’s Disease Assessment Scale-Cognitive Subscale (ADAS-cog), Cooperative Study of Alzheimers Disease-Activities of Daily Living (ADCS-ADL), or the Mini Mental State Examination (MMSE), in AD patients treated with resveratrol, alone or as RGM, were included. After 1855 studies were identified, 24 RCTs underwent full-text review, with 20 studies excluded because they did not meet the inclusion criteria. Thus, four RCTs were included in the qual. analyses. The findings demonstrate that there are still few studies in humans, but they showed that this polyphenol acts in the delay of cognitive impairment in patients with AD, when administered alone or in combination with glucose and malate. Supplementation with resveratrol seems to influence the progressive cognitive and functional decline in AD patients, when compared with a placebo group.

Drugs & Aging published new progress about Alzheimer disease. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Li, Wenwen published the artcileHonokiol Restores Microglial Phagocytosis by Reversing Metabolic Reprogramming, Category: alcohols-buliding-blocks, the main research area is honokiol restores microglial phagocytosis metabolic reprogramming; Honokiol; metabolic reprogramming; microglial phagocytosis; mitochondria.

Dysfunction of microglia has been increasingly recognized as a causative factor in Alzheimerprimes disease (AD); thus, developing medicines capable of restoring microglial functions is critically important and constitutes a promising therapeutic strategy. Honokiol is a natural neuroprotective compound extracted from Magnolia officinalis, which may play roles in AD therapy. This study aimed to evaluate the role and the underlying mechanisms of honokiol in microglial phagocytosis. MTT and flow cytometry were used to assess the cell viability and apoptosis, resp. Phagocytic capacity, mitochondrial reactive oxygen species production, and membrane potential were evaluated using fluorescence microscopy. Seahorse XF24 extracellular flux analyzer was for cell glycolysis and oxidative phosphorylation detection. Mass spectrometry was applied for metabolites measurement. Quant. real-time polymerase chain reaction and western blotting were performed to detect the mRNA and protein level of PPARgamma and PGC1alpha, resp. Honokiol alleviated Abeta42-induced BV2 neurotoxicity. Honokiol promoted phagocytic efficiency of BV2 cells through reversing a metabolic switch from oxidative phosphorylation to anaerobic glycolysis and enhancing ATP production Meanwhile, honokiol reduced mitochondrial reactive oxygen species production and elevated mitochondrial membrane potential. Moreover, honokiol increased the expression of PPARgamma and PGC1alpha, which might play pos. roles in energy metabolism and microglial phagocytosis. In this study, honokiol was identified as an effect natural product capable of enhancing mitochondrial function thus promoting microglial phagocytic function.

Journal of Alzheimer’s Disease published new progress about Alzheimer disease. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hoang, Van-Hai published the artcileDiscovery of Conformationally Restricted Human Glutaminyl Cyclase Inhibitors as Potent Anti-Alzheimer’s Agents by Structure-Based Design, Formula: C4H11NO2, the main research area is Alzheimer’s disease glutaminyl cyclase SAR conformational analysis.

Alzheimer’s disease (AD) is an incurable, progressive neurodegenerative disease whose pathogenesis cannot be defined by one single element but consists of various factors; thus, there is a call for alternative approaches to tackle the multifaceted aspects of AD. Among the potential alternative targets, we aim to focus on glutaminyl cyclase (QC), which reduces the toxic pyroform of β-amyloid in the brains of AD patients. On the basis of a putative active conformation of the prototype inhibitor 1, a series of N-substituted thiourea, urea, and α-substituted amide derivatives were developed. The structure-activity relationship analyses indicated that conformationally restrained inhibitors demonstrated much improved QC inhibition in vitro compared to nonrestricted analogs, and several selected compounds demonstrated desirable therapeutic activity in an AD mouse model. The conformational anal. of a representative inhibitor indicated that the inhibitor appeared to maintain the Z-E conformation at the active site, as it is critical for its potent activity.

Journal of Medicinal Chemistry published new progress about Alzheimer disease. 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, Formula: C4H11NO2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wangrawa, Dimitri W. published the artcileEssential oils and their binary combinations have synergistic and antagonistic insecticidal properties against Anopheles gambiae s. l. (Diptera: Culicidae), Category: alcohols-buliding-blocks, the main research area is Cymbopogon Lantana Lippia Anopheles essential oil biopesticide synergism.

Botanical biopesticides have potential for use in mosquito control because they exhibit low mammalian toxicity, are readily biodegraded, show target specificity and insecticidal activity. As populations of mosquito species grow more resistant to currently used organic insecticides, a need for new and effective insecticides for vector control becomes more urgent. This study reports the effects of synergistic and antagonistic essential oils (EOs) from Cymbopogon schoenanthus, Lantana camara, Lippia chevalieri and Lippia multiflora and their binary combinations against Anopheles gambiae s. l. larvae and adults. EOs insecticidal properties were tested with third to fourth-instar larvae and, non-blood-fed 3-5-day old field-collected An. gambiae using WHO and CDC bottle bioassays, resp. Many compounds were found in the EOs mixtures All EOs showed larvicidal and adulticidal activities with mortality from 0 to 100% against An. gambiae which were concentration dependent and EOs specific. EO mixture from C. schoenanthus and L. multiflora showed synergistic effect with LC50 of 38 ppm and EOs from L. chevalieri and C. schoenanthus showed antagonistic effect against larvae with LC50 of 100.84 ppm. On the other hand, EOs combinations showed additive effect on all adults. This study describes the potential of using EOs and their synergistic mixtures as potential insecticide(s) as a safer alternative to synthetic insecticides.

Biocatalysis and Agricultural Biotechnology published new progress about Anopheles gambiae. 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