Tag: 100-200

Structure-affinity relationship of the binding of phenolic acids and their derivatives to bovine serum albumin was written by Yuan, Sujing;Zhang, Yunyue;Liu, Jiaxin;Zhao, Yu;Tan, Libo;Liu, Jingwen;Wang, Qingyu;Zhang, Hao. And the article was included in Food Chemistry in 2019.SDS of cas: 81245-24-1 This article mentions the following:

Phenolic acids perform biol. effects which are largely influenced by their binding to serum albumin. Therefore, investigating structure-affinity relationship of binding between phenolic acids and serum albumin is important. In this study, 114 phenolic acids and their derivatives, sharing the benzoic acid core with different substituents groups, were selected to investigate structure-affinity relationships with bovine serum albumin. The binding constants were obtained through fluorescence quenching, and a comprehensive math. model with inner-filter effect correction was applied. The results showed that the hydroxy group at the 2-position led to stronger binding affinity, while it had a neg. influence at the 4-position. Substituting hydroxy groups with methoxy groups at 4-position and with Me groups at 3-position both strengthened the binding affinity, resp. Hydrogen bonding was one of the key binding forces for this binding interaction. Our findings provide a fundamental insight on the binding mechanism of phenolic acids to bovine serum albumin. In the experiment, the researchers used many compounds, for example, Methyl 2-methoxy-4-methylbenzoate (cas: 81245-24-1SDS of cas: 81245-24-1).

Methyl 2-methoxy-4-methylbenzoate (cas: 81245-24-1) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.SDS of cas: 81245-24-1

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

The discovery and structure-activity relationships leading to CE-156811, a difluorophenyl cyclopropyl fluoroether: A novel potent antibacterial analog derived from hygromycin A was written by Le, Phuong T.;Brickner, Steven J.;Wade, Sarah K.;Brighty, Katherine;Monahan, Rhonda;Stone, Gregory G.;Girard, Dennis;Finegan, Steve;Duignan, Joan;Schafer, John;Maloney, Meghan;Zaniewski, Richard P.;Connolly, Ann G.;Liras, Jennifer;Bordner, Jon;Samardjiev, Ivan. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2011.Application of 98231-07-3 This article mentions the following:

SAR studies and optimization of various modified Hygromycin A fluoroalkyl ethers, which led to the discovery of the highly potent 4′-(2-cyclopropyl-2-fluoroethyl ether) antibacterial CE-156811 (1) derived from truncation of the ribose ring and difluorination of the Ph found in Hygromycin A, are discussed. In the experiment, the researchers used many compounds, for example, Methyl 3,3-dimethoxycyclobutanecarboxylate (cas: 98231-07-3Application of 98231-07-3).

Methyl 3,3-dimethoxycyclobutanecarboxylate (cas: 98231-07-3) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Application of 98231-07-3

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

Transition-Metal-Free Regiospecific Aroylation of Nitroarenes Using Ethyl Arylacetates at Room Temperature was written by Kumar, Promod;Sharma, Anup Kumar;Guntreddi, Tirumaleswararao;Singh, Rahul;Singh, Krishna Nand. And the article was included in Organic Letters in 2018.SDS of cas: 587-88-2 This article mentions the following:

A novel regiospecific C(sp³)-C(sp²) coupling between Et arylacetates and nitroarenes was developed to deliver biaryl ketones in excellent yields. The protocol is metal-free, mild, and compatible with a number of functional groups on both of the reacting partners. In the experiment, the researchers used many compounds, for example, Ethyl 2-(4-fluorophenyl)acetate (cas: 587-88-2SDS of cas: 587-88-2).

Ethyl 2-(4-fluorophenyl)acetate (cas: 587-88-2) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esters contain a carbonyl center, which gives rise to 120鎺?C閳ユ弲閳ユ彊 and O閳ユ弲閳ユ彊 angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C閳ユ彊閳ユ弲 bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. SDS of cas: 587-88-2

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

Effect of short and long term irrigation with treated wastewater on chemical composition and herbicidal activity of Eucalyptus camaldulensis Dehn. essential oils was written by Maaloul, Aya;Verdeguer Sancho, Mercedes;Oddo, Martina;Saadaoui, Ezzeddine;Jebri, Monia;Michalet, Serge;Dijoux-Franca, Mariegenevieve;Mars, Mohamed;Romdhane, Mehrez. And the article was included in Notulae Botanicae Horti Agrobotanici Cluj-Napoca in 2019.Category: esters-buliding-blocks This article mentions the following:

Treated wastewater (TWW) appears to be an opportunity for irrigation. However, it could represent a stress factor for plants, and influence their metabolism, changing their secondary metabolites and, consequently, their biol. properties. Eucalyptus camaldulensis essential oil (EO) had been reported to possess phytotoxic activity. The main objective of this work was to compare the chem. composition and herbicidal activity of E. camaldulensis EO obtained from leaves of young plants and old trees irrigated with well water (WW) and TWW. Germination tests were performed in vitro against Amaranthus hybridus, Chenopodium album, Echinochloa crus-galli and Lolium perenne. The EOs composition was analyzed by gas chromatog. and gas chromatog./mass spectrometry. A high percentage of oxygenated monoterpenes, with 1,8-cineole as main compound, was found in the EOs from leaves of young plants irrigated with both types of water. The EO from leaves of old trees irrigated with WW contained a main fraction of monoterpene hydrocarbons (45.17%) with pcymene as principal compound The highest herbicidal potential was shown by the EO from young plants irrigated with TWW. It completely inhibited A. hybridus and L. perenne germination, and nearly blocked the others at all concentrations assayed. It also showed strong phytotoxic activity on seedling length. The results suggest the possible use of TWW to irrigate Eucalyptus crops as it enhances the EOs herbicidal potential that could be used as natural herbicides. In the experiment, the researchers used many compounds, for example, Isopentyl 3-methylbutanoate (cas: 659-70-1Category: esters-buliding-blocks).

Isopentyl 3-methylbutanoate (cas: 659-70-1) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Category: esters-buliding-blocks

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

Synthesis of 1,2,4-triazole-linked urea/thiourea conjugates as cytotoxic and apoptosis inducing agents was written by Tokala, Ramya;Bale, Swarna;Janrao, Ingle Pavan;Vennela, Aluri;Kumar, Niggula Praveen;Senwar, Kishna Ram;Godugu, Chandraiah;Shankaraiah, Nagula. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2018.Formula: C8H4N2O This article mentions the following:

A new series of 1,2,4-triazole-linked urea and thiourea conjugates have been synthesized and evaluated for their in vitro cytotoxicity against selected human cancer cell lines namely, breast (MCF-7, MDA-MB-231), lung (A549) prostate (DU145) and one mouse melanoma (B16-F10) cell line and compared with reference drug. The compound I showed significant cytotoxicity on MCF-7 breast cancer cell line with a IC₅₀ value of 7.22 鍗?0.47 娓璏 among all the tested compounds Notably, induction of apoptosis by compound I on MCF-7 cells was evaluated using different staining techniques such as acridine orange/ethidium bromide (AO/EB), annexin V-FITC/PI, and DAPI. Further, clonogenic assay indicates the inhibition of colony formation on MCF-7 cells by compound I. Moreover, the flow-cytometric anal. also revealed that compound I caused the arrest of cells at G0/G1 phase of cell cycle. In addition, the compounds when tested on normal human cells (L-132) were found to be safer with low cytotoxicity profile. In the experiment, the researchers used many compounds, for example, 3-Cyanophenylisocyanate (cas: 16413-26-6Formula: C8H4N2O).

3-Cyanophenylisocyanate (cas: 16413-26-6) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Formula: C8H4N2O

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

Asymmetric reduction of 2-chloro-3-oxo-ester into enantiomerically high pure diltiazem precursor by a Candida ketoreductase was written by Chen, Cheng;Xuan, Yang;Chen, Qi;Ni, Guo-Wei;Pan, Jiang;Xu, Jian-He. And the article was included in Molecular Catalysis in 2021.Related Products of 15399-05-0 This article mentions the following:

Me (2R,3S)-3-(4-methoxyphenyl)glycidate [(2R,3S)-MPGM] is an advanced chiral synthon for the synthesis of the cardiovascular drug diltiazem. It can be easily accessed by cyclizing the reduction products of Me 2-chloro-3-(4-methoxyphenyl)-3-oxo-propanoate. Herein, we report an identified carbonyl reductase (CpKR) from Candida parapsilosis that displayed an excellent stereoselectivity toward the keto substituent at the C₃-position of the 2-chloro-3-oxo-ester. The engineered Escherichia coli cells harboring CpKR gene were directly applied for the asym. reduction of keto ester 1a with a space-time yield of 46 g L^-1 d^-1, which represents the highest productivity in bio-reduction reported so far. The isolated chiral alc. products were then applied to the chem. synthesis of (2R,3S)-MPGM in 99% ee and a total yield of 76% in the two-step chemo-enzymic reactions, which far exceeded the maximum theor. yield (50%) of the existing industrial process based on a lipase-catalyzed resolution of racemic MPGM. This work provides a promising eco-friendly and cost-effective route toward industrial synthesis of pharmaceutically relevant diltiazem. In the experiment, the researchers used many compounds, for example, Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0Related Products of 15399-05-0).

Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Related Products of 15399-05-0

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

Antioxidative, anticancer, and antibacterial activities of a nanoemulsion-based gel containing Myrtus communis L. essential oil was written by Roozitalab, Ghazaal;Yousefpoor, Yaser;Abdollahi, Abbas;Safari, Mojdeh;Rasti, Fatemeh;Osanloo, Mahmoud. And the article was included in Chemical Papers in 2022.Quality Control of (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate This article mentions the following:

Myrtus communis L. is a common medicinal plant with a wide range of biol. properties. In this study, an attempt was made to improve its essential oil’s antioxidant, anticancer, and antibacterial activities by preparing a nanogel dosage form. Alpha-pinene (29.7%), 1,8-cineole (25.8%), linalool (9.1%), linalool acetate (5.9%), and geranyl acetate (3.4%) were identified as five major compounds in the essential oil using GC-MS anal. Optimum nanoemulsion with a droplet size of 179 鍗?7 nm and a narrow droplet size distribution (SPAN 0.96) was gelified by the addition of CM-cellulose (3 w/v %). The rheometry anal. at shear rates of 0.1-100 1/s showed the viscosity was fully fitted with the Carreau-Yasuda model. The nanogel with IC50 132.6娓璯/mL was 4 folds more potent than the bulk essential oil (IC50: 580.8娓璯/mL) against A-375 melanoma cells. Besides, after treatment of Escherichia coli and Staphylococcus aureus with 1000娓璯/mL of the nanogel and the bulk essential oil, their growths were observed at 37.5 and 59.1% as well as 21.4 and 40.6%. Besides, antioxidant activity was investigated using DPPH assay; the nanogel was significantly more potent (P < 0.001) than that of bulk essential oil at all examined concentrations (62.6-1000娓璯/mL). Furthermore, polyethylene oxide-gelatin electrospun nanofibers (diameter of 359 鍗?36 nm) with no effects on the cancer cell and the bacterial growth were proposed as lesion dressing after-treatment with the nanogel. Therefore, the stained nanofiber with the nanogel could be considered a natural potent anticancer and antibacterial agent in vivo study. In the experiment, the researchers used many compounds, for example, (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3Quality Control of (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate).

(E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Quality Control of (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate

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

High Affinity Central Benzodiazepine Receptor Ligands: Synthesis and Biological Evaluation of a Series of Phenyltriazolobenzotriazindione Derivatives was written by Primofiore, Giampaolo;Da Settimo, Federico;Taliani, Sabrina;Salerno, Silvia;Novellino, Ettore;Greco, Giovanni;Cosimelli, Barbara;Besnard, Francois;Costa, Barbara;Montali, Marina;Martini, Claudia. And the article was included in Journal of Medicinal Chemistry in 2005.Application In Synthesis of Ethyl 2-(4-fluorophenyl)acetate This article mentions the following:

A series of 2-phenyl[1,2,3]triazolo[1,2-a][1,2,4]benzotriazin-1,5(6H)-diones (PTBTs), were prepared and tested at the central benzodiazepine receptor (BzR). The skeleton of these compounds was designed by formally combining the N-C:O moieties of the known BzR ligands, triazoloquinoxalines and triazinobenzimidazoles (ATBIs). Most of the PTBTs displayed submicromolar/nanomolar potency at the BzR. The 9-chloro derivatives were generally found to be more potent than their 9-unsubstituted counterparts. Compound (I) turned out to be the most potent of the PTBTs (K_i 2.8 nM). A subset of compounds when tested for their affinity on recombinant rat 浼?灏?绾?, 浼?灏?绾?, and 浼?灏?绾? GABA_A/Bz receptor subtypes, showed enhanced affinities for the 浼?灏?绾? isoform, with compounds I and (II) exhibiting the highest selectivity. Moreover, compounds I and II were found to display a full agonist efficacy profile at 浼? and 浼? receptor subtypes, and an antagonist efficacy at 浼?-containing receptors. In the experiment, the researchers used many compounds, for example, Ethyl 2-(4-fluorophenyl)acetate (cas: 587-88-2Application In Synthesis of Ethyl 2-(4-fluorophenyl)acetate).

Ethyl 2-(4-fluorophenyl)acetate (cas: 587-88-2) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is 绾?valerolactone.Application In Synthesis of Ethyl 2-(4-fluorophenyl)acetate

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

Phenotypic Optimization of Urea-Thiophene Carboxamides To Yield Potent, Well Tolerated, and Orally Active Protective Agents against Aminoglycoside-Induced Hearing Loss was written by Chowdhury, Sarwat;Owens, Kelly N.;Herr, R. Jason;Jiang, Qin;Chen, Xinchao;Johnson, Graham;Groppi, Vincent E.;Raible, David W.;Rubel, Edwin W.;Simon, Julian A.. And the article was included in Journal of Medicinal Chemistry in 2018.Application of 16413-26-6 This article mentions the following:

Hearing loss is a major public health concern with no pharmaceutical intervention for hearing protection or restoration. Using zebrafish neuromast hair cells, a robust model for mammalian auditory and vestibular hair cells, we identified a urea-thiophene carboxamide, I (ORC-001), as protective against aminoglycoside antibiotic (AGA)-induced hair cell death. The 50% protection (HC₅₀) concentration conferred by I is 3.2 娓璏 with protection against 200 娓璏 neomycin approaching 100%. Compound I was sufficiently safe and drug-like to validate otoprotection in an in vivo rat hearing loss model. We explored the structure-activity relationship (SAR) of this compound series to improve otoprotective potency, improve pharmacokinetic properties and eliminate off-target activity. We present the optimization of I to yield II (ORC-13661). Compound II protects mechanosensory hair cells with HC₅₀ of 120 nM and demonstrates 100% protection in the zebrafish assay and superior physiochem., pharmacokinetic, and toxicol. properties, as well as complete in vivo protection in rats. In the experiment, the researchers used many compounds, for example, 3-Cyanophenylisocyanate (cas: 16413-26-6Application of 16413-26-6).

3-Cyanophenylisocyanate (cas: 16413-26-6) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Application of 16413-26-6

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

Chemical Characterization of Five Tunisian Eucalyptus Essential Oils Species was written by Elaissi, Ameur;Moumni, Sarra;Roeleveld, Kevin;Larbi Khouja, Mohamed. And the article was included in Chemistry & Biodiversity in 2020.SDS of cas: 659-70-1 This article mentions the following:

Hydrodistillation of the dried leaves of five Eucalyptus species, E. alba REINW. ex BLUME, E. citriodora HOOK., E. paniculata SM., harvested from Choucha arboreta (region of Sejnane, northwest of Tunisia), E. pimpiniana MAIDEN from Mjez Elbab arboreta (north east of Tunisia) and E. bicolor A.CUNN ex HOOK from Sidi Smail arboreta (center of Tunisia), in March 2017, afforded essential oils in yields varying from 1.3鍗?.2 to 6.0鍗?.9% according to the species. E. citriodora provided the highest mean percentage of essential oil amongst all the species. Anal. by GC (RI) and GC/MS allowed the identification of 138 components representing 84.6-98.7% of the total oil. The content of the different samples varied according to the species. The main components were citronellol, followed by 1,8-cineole, 浼?pinene, 锜?cadinol, 7-epi-浼?eudesmol, trans-pinocarveol, spathulenol, aromadendrene, 绾?cadinene and 鏈?cadinene. The principal components and the hierarchical cluster analyses separated the five leaf essential oils into three groups, each group constituted a chemotype. In the experiment, the researchers used many compounds, for example, Isopentyl 3-methylbutanoate (cas: 659-70-1SDS of cas: 659-70-1).

Isopentyl 3-methylbutanoate (cas: 659-70-1) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.SDS of cas: 659-70-1

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