Tag: 100-200

On September 20, 2007, Alcaraz, Lilian; Lister, Andrew; Pairaudeau, Garry published a patent.Product Details of 142327-44-4 The title of the patent was Preparation of aminohydroxyethylbenzothiazolones as β2 adrenoreceptor agonists. And the patent contained the following:

Title compounds ArCH(OH)CH2NHC(R1)(R2)TAXYWCR51R52NR3R4 [I Ar = 4-hydroxy-2-oxo-3H-1,3-benzothiazol-7-yl; T = a bond, CR33R34, CR35R36CR37R38, CR39R40CR41R42CR43R44; W = a bond, CR45R46, CR47R48CR49R50; A = a bond, (un)substituted (hetero)aryl; X = a bond; Y = a bond, (un)substituted (hetero)aryl; but A and Y not both a bond; R3, R4 = independently H, (un)substituted alkyl, heterocyclyl, cycloalkyl; or R3NR4 = (un)substituted 4-12 membered monocyclyl or bicyclyl; R33-R50 = independently H, alkyl; and their pharmaceutically acceptable salts], (e.g., II•2TFA), were prepared as β2 adrenoreceptor agonists. Thus, a multi-step synthesis from Et 2-(3-methylphenyl)acetate was given for benzothiazolone salt II•2TFA. Selected I were tested for adrenergic β2 mediated cAMP production Certain benzothiazolones I were at least 10-fold more potent at the β2 receptor compared to the α1, β1, or dopamine (D2) as demonstrated by selectivity assays. I, and their pharmaceutical compositions, are useful for the treatment of diseases such as ARDS, pulmonary emphysema, bronchitis, bronchiectasis, COPD, asthma and rhinitis. The experimental process involved the reaction of Methyl 2-(3-formylphenyl)acetate(cas: 142327-44-4).Product Details of 142327-44-4

The Article related to aminohydroxyethylbenzothiazolone preparation beta2 adrenoreceptor agonist respiratory disease, benzothiazolone hydroxy aminohydroxyethyl preparation beta2 adrenoreceptor agonist and other aspects.Product Details of 142327-44-4

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On April 1, 2019, Wang, Shuai; Li, Zhong-Rui; Suo, Feng-Zhi; Yuan, Xiao-Han; Yu, Bin; Liu, Hong-Min published an article.Recommanded Product: 10472-24-9 The title of the article was Synthesis, structure-activity relationship studies and biological characterization of new [1,2,4]triazolo[1,5-a]pyrimidine-based LSD1/KDM1A inhibitors. And the article contained the following:

The design, synthesis and biochem. characterization of [1,2,4]triazolo[1,5-a]pyrimidine derivatives I [R1 = H, [(2-bromophenyl)methyl]sulfanyl, prop-2-en-1-ylsulfanyl, [(1H-1,3-benzodiazol-2-ylmethyl)sulfanyl], etc.; R2 = H, Me, (CH2)4CH3; R3 = Me, Et, C6H5; R2, R3 = -(CH2)3-; R4 = H, C6H5, [4-(4-methylpiperazin-1-yl)phenyl], etc.] as new LSD1 inhibitors have been reported. Of these compounds, compound I [R1 = (1H-1,3-benzodiazol-2-ylsulfanyl)methyl; R2 = H; R3 = Me; R4 = [4-(4-methylpiperazin-1-yl)phenyl]] (II) inhibited LSD1 in a reversible manner (IC50 = 1.72 μM) and showed selectivity to LSD1 over MAO-A/B. Besides, compound II displayed FAD-competitive binding to LSD1. Interestingly, compound II did not inhibit horseradish peroxidase (HRP) and quench H2O2, thus excluding the possibility that LSD1 inhibition by compound II was due to the HRP inhibition and consumption of H2O2. In LSD1 overexpressed A549 cells, compound II concentration-dependently induced accumulation of H3K4me1/me2 and H3K9me2 and showed cellular target engagement to LSD1. Addnl., compound II significantly inhibited migration of A549 cells in a concentration-dependent manner, further western blot anal. showed that compound II increased expression levels of epithelial cell markers E-Cadherin and Claudin-1, down-regulated mesenchymal cell marker N-Cadherin and the upstream transcription factors Snail and Slug. Docking studies were also performed to rationalize the potency of compound II toward LSD1. To conclude, the [1,2,4]triazolo[1,5-a]pyrimidine I could serve as a promising scaffold for the development of new LSD1 inhibitors. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Recommanded Product: 10472-24-9

The Article related to triazolopyrimidine preparation sar lsd1 kdm1a inhibitor anticancer activity, antiproliferative activity, lsd1 inhibitors, migration inhibition, [1,2,4]triazolo[1,5-a]pyrimidines and other aspects.Recommanded Product: 10472-24-9

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On July 26, 2012, Parai, Maloy Kumar; Huggins, David J.; Cao, Hong; Nalam, Madhavi N. L.; Ali, Akbar; Schiffer, Celia A.; Tidor, Bruce; Rana, Tariq M. published an article.Recommanded Product: (R)-Methyl 3-hydroxybutanoate The title of the article was Design, Synthesis, and Biological and Structural Evaluations of Novel HIV-1 Protease Inhibitors To Combat Drug Resistance. And the article contained the following:

A series of new HIV-1 protease inhibitors (PIs) were designed using a general strategy that combines computational structure-based design with substrate-envelope constraints. The PIs incorporate various alc.-derived P2 carbamates with acyclic and cyclic heteroat. functionalities into the (R)-hydroxyethylamine isostere. Most of the new PIs show potent binding affinities against wild-type HIV-1 protease and three multidrug resistant (MDR) variants. In particular, inhibitors containing the 2,2-dichloroacetamide, pyrrolidinone, imidazolidinone, and oxazolidinone moieties at P2 are the most potent with Ki values in the picomolar range. Several new PIs exhibit nanomolar antiviral potencies against patient-derived wild-type viruses from HIV-1 clades A, B, and C and two MDR variants. Crystal structure analyses of four potent inhibitors revealed that carbonyl groups of the new P2 moieties promote extensive hydrogen bond interactions with the invariant Asp29 residue of the protease. These structure-activity relationship findings can be utilized to design new PIs with enhanced enzyme inhibitory and antiviral potencies. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Recommanded Product: (R)-Methyl 3-hydroxybutanoate

The Article related to computational structure based design hiv 1 protease inhibitor, crystal structure hiv 1 protease inhibitor complex, carbamate hiv 1 protease inhibitor combat multidrug resistance and other aspects.Recommanded Product: (R)-Methyl 3-hydroxybutanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On November 15, 2021, Said, Mona F.; Georgey, Hanan H.; Mohammed, Eman R. published an article.Synthetic Route of 517-23-7 The title of the article was Synthesis and computational studies of novel fused pyrimidinones as a promising scaffold with analgesic, anti-inflammatory and COX inhibitory potential. And the article contained the following:

Addressing the global need for the development of safe and potent NSAIDs, new series of oxadiazolo and thiadiazolo fused pyrmidinones were synthesized and initially tested for their analgesic activity. All tested compounds showed promising analgesic activity compared with the reference standard indomethacin. Moreover, anti-inflammatory activity evaluation, ulcerogenic liability, and in vitro COX-1, COX-2 enzyme inhibition assays were also performed for the most active derivatives The methoxyphenyl piperazinyl derivative I showed analgesic activity surpassing indomethacin with protection of 100%, and 83%; resp. Also I showed good anti-inflammatory activity with relatively lower ulcer index compared with other tested compounds, and potent COX-1 and COX-2 inhibitory activity with IC50 = 0.140, 0.007μm, resp., and with a selectivity index of 20.00 which was better than the reference standards and the other tested congeners. Addnl., three compounds revealed moderate selectivity (SI = 3.53, 3.70 and 5.87, resp.). Moreover, in silico physicochem. parameters revealed that the new fused pyrimidinones demonstrated promising pharmacokinetic properties. Furthermore, computational studies in form of 2D-quant. structure-activity relationship (2D-QSAR) and 3D-pharmacophore confirmed the potential analgesic properties of the new target compounds The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Synthetic Route of 517-23-7

The Article related to fused pyrimidinone preparation antiinflammatory physicochem analgesic pharmacophore pharmacokinetic, analgesic, anti-inflammatory, fused pyrimidinones, pharmacophore, qsar study and other aspects.Synthetic Route of 517-23-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On April 30, 2022, Chandra, Sonam; Qureshi, Saba; Chopra, Deepti; Shukla, Saumya; Patel, Sunil Kumar; Singh, Jyoti; Ray, Ratan Singh published an article.Electric Literature of 85-91-6 The title of the article was UVR-induced phototoxicity mechanism of methyl N-methylanthranilate in human keratinocyte cell line. And the article contained the following:

Fragrances are used in almost every cosmetic product. International Fragrance Association (IFRA) is the regulatory body that controls the use of fragrances in cosmetic products. Methyl-N-methylanthranilate (DMA) is a naturally derived fragrance, commonly used in cosmetic products such as fine perfumes, skin care products, etc. But there is a lack of detailed study in terms of its phototoxic and photogenotoxicity mechanisms under UVA/sunlight exposure. In this study, we have shown that DMA photodegrades in 4 h under UVA (1.5 mW/cm2) and sunlight. DMA (0.0001%-0.0025%) significantly reduced the cell viability as demonstrated by NRU and MTT assays in a dose-dependent manner under UVA (5.4 J/cm2) and sunlight (1 h) exposure in the HaCaT cell line. It generated excessive intracellular ROS (superoxide anion radical via type-I photodynamic reaction), resulting in lysosomal destabilization and mitochondrial membrane depolarization. Photo-activated DMA caused DNA fragmentation as observed by olive tail moment. DNA double-strand breaks was demonstrated by phosphorylation of H2AX-histone protein and formation of photo-micronuclei in skin keratinocytes. Addnl., photo-activated DMA upregulated the oxidative stress marker gene hemeoxygenase-1 and apoptotic marker genes (cytochrome-C, caspase-3, caspase-9). Activated caspase-cascade pathway established that photo-activated DMA can potentially trigger apoptosis in the human skin cells. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Electric Literature of 85-91-6

The Article related to skin keratinocyte phototoxicity methyl n methylanthranilate uv a sunlight, fragrance, methyl-n-methylanthranilate, photogenotoxicity, phototoxicity, type-i photodynamic reaction and other aspects.Electric Literature of 85-91-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On April 13, 2022, Xu, Yan-Li; Wang, Yu-Xia; Wen, Gen-Fa; Da, Chao-Shan published an article.Synthetic Route of 517-23-7 The title of the article was Organocatalytic enantioselective electrophilic amination of benzoyl butyrolactones. And the article contained the following:

Organocatalytic electrophilic amination of benzoyl butyrolactones with azodicarboxylates was demonstrated to highly efficiently prepare quaternary carbon stereocenter-bearing α-amino-γ-butyrolactones I [R = Me, Ph, OBn, etc.], key framework in numerous bioactive compounds The squaramide catalyst II realized the highest yield (99%) and enantioselectivity (93%). The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Synthetic Route of 517-23-7

The Article related to squaramide catalyst preparation, alpha amino gamma butyrolactone enantioselective preparation, benzoyl butyrolactone azodicarboxylate squaramide catalyst electrophilic amination and other aspects.Synthetic Route of 517-23-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On January 31, 2018, Frank, Daniel; Espeel, Pieter; Badi, Nezha; Du Prez, Filip published an article.Electric Literature of 6038-19-3 The title of the article was Structurally diverse polymers from norbornene and thiolactone containing building blocks. And the article contained the following:

Ste xA wide set of norbornene-derived polymers with a diversity in backbone and side chain structures has been prepared based on norbornene building blocks that also include a thiolactone group. For this purpose, two thiolactone monomers with differently substituted norbornene moieties were synthesized and their reactivity compared using three different polymerization strategies. First, their potential for amine-thiol-ene polymerization was evaluated using different amines, solvents and initiator concentrations in order to screen their influence on the mol. weight and glass transition temperature Free radical (co-)polymerization and ring-opening metathesis polymerization were also applied and the obtained polymers were submitted to post-polymerization modification. The results showed that only the monomer 5-norbornenemethyl thiolactone carbamate results in polymer formation under the tested conditions. The obtained compounds were characterized by SEC, TGA, DSC and NMR. Not 26062942. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).Electric Literature of 6038-19-3

The Article related to norbornene thiolactone ring opening amidation polymer synthesis, amine thiol ene addition norbornene thiolactone polymer synthesis, radical polymerization norbornene thiolactone and other aspects.Electric Literature of 6038-19-3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On November 30, 2017, Radulovic, Niko S.; Miltojevic, Ana B.; Stojanovic, Nikola M.; Randjelovic, Pavle J. published an article.Name: Methyl N-Methylanthranilate The title of the article was Distinct urinary metabolite profiles of two pharmacologically active n-methylanthranilates: three approaches to xenobiotic metabolite identification. And the article contained the following:

Two volatile alkaloids, iso-Pr N-methylanthranilate (IMA) and Me N-methylanthranilate (MMA), present in the human diet and cosmetic products, were recently demonstrated to possess important pharmacol. activities. While MMA is considered to be phototoxic, there is scarce data on the toxicity of IMA. Herein, we analyzed urinary metabolites of IMA and MMA in rats (200 mg kg-1, i.p., 7 days) by combining three different approaches: 1) preparative chromatog., 2) synthesis, and 3) SPR. The preparative approach, Sephadex LH-20 chromatog. of the extract of urine samples of IMA treated animals, in conjunction with NMR, enabled the identification of 16 different anthranilate derivatives, among which products of aromatic core hydroxylation (iso-Pr 5-hydroxy-N-methylanthranilate, iso-Pr 5-hydroxyantranilate, iso-Pr 3-hydroxyantranilate) were the major ones. The first application of the synthetic/combinatorial approach led to a successful identification of MMA metabolites, where 2-(methylamino)benzamide and N-methylanthranilic acid were the principal ones, among 14 others. Generally, MMA and IMA undergo analogous biotransformation pathways; however, MMA predominantly underwent chem. conversions of the ester group, i.e. transformation into derivatives of anthranilamide and anthranilic acid, while the major metabolic pathway of IMA was hydroxylation of the aromatic core. Addnl., pathohistol. examinations revealed no signs of liver toxicity, or other signs of toxicity. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Name: Methyl N-Methylanthranilate

The Article related to urinary metabolite isopropyl methyl n methylanthranilate, isopropyl n-methylanthranilate, metabolite identification, methyl n-methylanthranilate, rat, urinary metabolites, xenobiotic and other aspects.Name: Methyl N-Methylanthranilate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On October 31, 2020, Zhang, Penghan; Carlin, Silvia; Lotti, Cesare; Mattivi, Fulvio; Vrhovsek, Urska published an article.Application In Synthesis of Methyl N-Methylanthranilate The title of the article was On sample preparation methods for fermented beverage VOCs profiling by GCxGC-TOFMS. And the article contained the following:

Aromas and tastes have crucial influences on the quality of fermented beverages. The determination of aromatic compounds requires global non-targeted profiling of the volatile organic compounds (VOCs) in the beverages. However, exptl. VOC profiling result depends on the chosen VOC collection method. This study aims to observe the impact of using different sample preparation techniques [dynamic headspace (DHS), vortex-assisted liquid-liquid microextraction (VALLME), multiple stir bar sorptive extraction (mSBSE), solid phase extraction (SPE), and solid phase micro-extraction (SPME)] to figure out the most suitable sample preparation protocol for profiling the VOCs from fermented beverages. Five common sample preparation methods were studied with beer, cider, red wine, and white wine samples. After the sample preparation, collected VOCs were analyzed by two-dimensional gas chromatog. coupled with time of flight mass spectrometry (GCxGC-TOFMS). GCxGC oven parameters can be optimized with the Box-Behnken surface response model and response measure on peak dispersion. Due to the unavoidable column and detector saturation during metabolomic anal., errors may happen during mass spectrum construction. Profiling results obtained with different sample preparation methods show considerable variance. Common findings occupy a small fraction of total annotated VOCs. For known fermentative aromas, best coverage can be reached by using SPME together with SPE for beer, and VALLME for wine and cider. GCxGC-TOFMS is a promising tool for non-targeted profiling on VOCs from fermented beverages. However, a proper data processing protocol is lacking for metabolomic anal. Each sample preparation method has a specific profiling spectrum on VOC profiling. The coverage of the VOC metabolome can be improved by combining complementary methods. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Application In Synthesis of Methyl N-Methylanthranilate

The Article related to fermented beverage sample preparation voc profiling gcxgc tofms, fermented beverages, sample preparation methods, two dimensional gas chromatography–mass spectrometry, voc profiling and other aspects.Application In Synthesis of Methyl N-Methylanthranilate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On July 31, 2022, Kamel, Al Khansaa A.; Hozayen, Walaa; El-kawi, Samraa H. Abd; Hashem, Khalid S. published an article.Computed Properties of 85-91-6 The title of the article was Galaxaura elongata Extract (GE) Modulates Vanadyl Sulfate-Induced Renal Damage via Regulating TGF-β/Smads and Nrf2/NF-κB Pathways. And the article contained the following:

Nephrotoxicity becomes a provoked problem as the kidneys are the target of many chemotherapies. For this reason, we aimed to study the protective effect of Galaxaura elongata extract (GE) against the vanadyl sulfate (Van) induced nephrotoxicity in rats. Forty Wistar albino rats (male) were divided into four groups (n = 10) as follows: control group: rats received 0.5% CM-cellulose (CMC). Galaxa group: rats received GE at a dose (100 mg/kg orally) daily for 6 wk. Van group: rats injected with Van at a dose (50 mg/kg i.p.) once weekly for 6 successive weeks. Galaxa+Van group: rats received GE at a dose (100 mg/kg orally) daily for 6 wk concurrently with Van at a dose (50 mg/kg i.p.) for 6 wk. Our results showed that Van significantly raised urea and creatinine serum levels as compared to the control group as well as disordered renal oxidative/antioxidant redox. Administration of GE with Van alleviated the adverse impact of Van over the kidney tissues. Furthermore, GE administration in Galaxa+ Van group downregulates angiotensin-converting enzyme (ACE1) mRNA expression, angiotensin II (Ang II) concentration, transforming growth factor β (TGF-β) mRNA expression and protein concentration and Nuclear factor κB (NF-κB) mRNA expression as compared to Van group. Also, GE administration caused a noticeable upregulation of Nrf2 and heme oxygenase-1 (HO-1) expressions with a consequent decrease of DNA fragmentation % compared to Van group. The results of the current study show that simultaneous treatment with GE can alleviate nephrotoxicity caused by Van in diabetic rats. The GE treatment of the Van treated animals restored altered renal oxidative/antioxidant redox values towards normal and lessened fibrosis. These results are consistent with these efects being caused by interactions with the TGF-B/Smads and Nrf2/NF-κB signaling pathways. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Computed Properties of 85-91-6

The Article related to galaxaura elongata vanadyl sulfate tgfbeta smad nrf renal damage, ace1, ang ii, galaxaura elongata extract, ho-1, nf-κb, nephro toxicity, nrf2, smad3, smad7, tgf-β, vanadyl sulfate and other aspects.Computed Properties of 85-91-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics