Category: ethers-buliding-blocks

Metabolic profiling of serum from dogs with pituitary-dependent hyperadrenocorticism was written by Munoz-Prieto, Alberto;Rubic, Ivana;Horvatic, Anita;Rafaj, Renata Baric;Ceron, Jose Joaquin;Tvarijonaviciute, Asta;Mrljak, Vladimir. And the article was included in Research in Veterinary Science in 2021.Name: 4-Hydroxy-3-methoxyphenethanol The following contents are mentioned in the article:

Hyperadrenocorticism (HAC) is one of the most common endocrine diseases in dogs characterized by excessive cortisol production caused by an adrenocorticotropic hormone (ACTH)-secreting tumor, namely pituitary-dependent HAC (PDH) or cortisol-secreting adrenal tumor. Metabolomics presents the ability to identify small mol. metabolites. Thus, the use of metabolomics techniques in canine PDH can provide information about the pathophysiol. and metabolic changes in this disease. This study aimed to identify and compare differences in serum metabolites between dogs with PDH and healthy dogs. The metabolomic profile of 20 dogs diagnosed with PDH was compared with 20 healthy dogs using liquid chromatog./mass spectrometry (LC/MS), and metabolite discrimination was performed using partial least squares-discriminant anal. (PLS-DA), the variable important in projection (VIP) and fold changes (FC) group-wise comparisons. The hypergeometric test identified the significantly altered pathways. A total of 21 metabolites were found to be significantly different between the two groups. The major alterations were found in arachidonic and decanoic acid, and phospholipids related to phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylinositol (PI). These metabolites are related to insulin resistance and other complications (i.e. hypertension). Our results indicate that PDH produces changes in serum metabolites of dogs, and the knowledge of these changes can aid to better understanding of pathophysiol. processes involved and contribute to potentially detect new biomarkers for this disease. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Name: 4-Hydroxy-3-methoxyphenethanol).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. 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. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C 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. Name: 4-Hydroxy-3-methoxyphenethanol

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Conjugated Metabolites of Hydroxytyrosol and Tyrosol Contribute to the Maintenance of Nitric Oxide Balance in Human Aortic Endothelial Cells at Physiologically Relevant Concentrations was written by Serreli, Gabriele;Le Sayec, Melanie;Diotallevi, Camilla;Teissier, Alice;Deiana, Monica;Corona, Giulia. And the article was included in Molecules in 2021.Application In Synthesis of 4-Hydroxy-3-methoxyphenethanol The following contents are mentioned in the article:

Nitric oxide (NO) is an important signaling mol. involved in many pathophysiol. processes. NO mediates vasodilation and blood flow in the arteries, and its action contributes to maintaining vascular homeostasis by inhibiting vascular smooth muscle contraction and growth, platelet aggregation, and leukocyte adhesion to the endothelium. Dietary antioxidants and their metabolites have been found to be directly and/or indirectly involved in the modulation of the intracellular signals that lead to the production of NO. The purpose of this study was to investigate the contribution of conjugated metabolites of hydroxytyrosol (HT) and tyrosol (TYR) to the release of NO at the vascular level, and the related mechanism of action, in comparison to their parental forms. Experiments were performed in human aortic endothelial cells (HAEC) to evaluate the superoxide production, the release of NO and production of cyclic guanosine monophosphate (cGMP), the activation of serine/threonine-protein kinase 1 (Akt1), and the activation state of endothelial nitric oxide synthase (eNOS). It was observed that the tested phenolic compounds enhanced NO and cGMP concentration, inhibiting its depletion caused by superoxide overproduction Moreover, some of them enhanced the activation of Akt (TYR, HT metabolites) and eNOS (HT, HVA, TYR-S, HT-3S). Overall, the obtained data showed that these compounds promote NO production and availability, suggesting that HT and TYR conjugated metabolites may contribute to the effects of parental extra virgin olive oil (EVOO) phenolics in the prevention of cardiovascular diseases. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Application In Synthesis of 4-Hydroxy-3-methoxyphenethanol).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Application In Synthesis of 4-Hydroxy-3-methoxyphenethanol

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Optimization and kinetic study of ultrasound assisted deep eutectic solvent based extraction: A greener route for extraction of curcuminoids from Curcuma longa was written by Patil, Sujata S.;Pathak, Ajay;Rathod, Virendra K.. And the article was included in Ultrasonics Sonochemistry in 2021.Safety of Bisdemethoxycurcumin The following contents are mentioned in the article:

The use of deep eutectic solvents (DESs) as a new extraction medium is a step towards the development of green and sustainable technol. In the present study, nine DESs based on choline chloride acids, alcs., and sugar were screened to study the extraction of curcuminoids from Curcuma longa L. Choline chloride and lactic acid DES at 1:1 M ratio gave the maximum extent of extraction Further, DES based extraction was intensified using ultrasound. The impact of various process parameters such as% (volume/volume) water in DES,% (w/v) solid loading, particle size, ultrasound power intensity, and pulse mode operation of ultrasound was studied. The maximum curcuminoids yield of 77.13 mg/g was achieved using ultrasound assisted DES (UA-DES) based extraction in 20% water content DES at 5% solid loading and 0.355 mm particle size with 70.8 W/cm² power intensity and 60% (6 s ON and 4 s OFF) duty cycle at 30 ± 2°C in 20 min of irradiation time. Kinetics of UA-DES extraction was explained using Peleg’s model and concluded that it is compatible with the exptl. data. Addnl., anti-solvent (water) precipitation technique was applied, which resulted in 41.97% recovery of curcuminoids with 82.22% purity from UA-DES extract in 8 h of incubation at 0°C. The comparison was made between conventional Soxhlet, batch, DES and UA-DES based processes on the basis of yield, time, solvent requirement, temperature, energy consumption, and process cost. The developed UA-DES based extraction can be an efficient, cost effective, and green alternative to conventional solvent extraction for curcuminoids. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Safety of Bisdemethoxycurcumin).

Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. 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. 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.Safety of Bisdemethoxycurcumin

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Toxicity evaluation of olive oil mill wastewater and its polar fraction using multiple whole-organism bioassays was written by Babic, Sanja;Malev, Olga;Pflieger, Maryline;Lebedev, Albert T.;Mazur, Dmitry M.;Kuzic, Anita;Coz-Rakovac, Rozelindra;Trebse, Polonca. And the article was included in Science of the Total Environment in 2019.Synthetic Route of C9H12O3 The following contents are mentioned in the article:

Olive mill wastewater (OMW) as a byproduct of olive oil extraction process has significant polluting properties mainly related to high organic load, increased COD/BOD ratio, high phenolic content and relatively acidic pH. Raw OMW from Slovenian Istria olive oil mill and its polar fraction were investigated in this study. Chem. characterization of OMW polar fraction identified tyrosol as the most abundant phenolic product, followed by catechol. Lethal and sub-lethal effects of OMW matrix and its polar fraction were tested using a battery of bioassays with model organisms: bacteria Vibrio fischeri, algae Chlorella vulgaris, water fleas Daphnia magna, zebrafish Danio rerio embryos, clover Trifolium repens and wheat Triticum aestivum. Raw OMW sample was the most toxic to V. fischeri (EC₅₀ = 0.24% of OMW sample final concentration), followed by D. magna (EC₅₀ = 1.43%), C. vulgaris (EC₅₀ = 5.20%), D. rerio (EC₅₀ = 7.05%), seeds T. repens (EC₅₀ = 8.68%) and T. aestivum (EC₅₀ = 11.58%). Similar toxicity trend was observed during exposure to OMW polar fraction, showing EC₅₀ values 2.75-4.11 times lower comparing to raw OMW. Tested samples induced also sub-acute effects to clover and wheat (decreased roots, sprouts elongation); and to zebrafish embryos (increased mortality, higher abnormality rate, decreased hatching and pigmentation formation rate). A comprehensive approach using a battery of bioassays, like those used in this study should be applied during ecotoxicity monitoring of untreated and treated OMW. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Synthetic Route of C9H12O3).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Synthetic Route of C9H12O3

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Interaction of bisdemethoxycurcumin with cationic (cetyltrimethylammonium) + nonionic (Tween 20/Tween 60) mixed surfactants: Thermodynamic study and functional improvement was written by Wang, Lu;Liu, YingLin;Weng, Tianxin;Li, Xinyu;Wu, Yushu;Zhao, Yanna;Liu, Jie;Liu, Min. And the article was included in Journal of Chemical Thermodynamics in 2022.Quality Control of Bisdemethoxycurcumin The following contents are mentioned in the article:

Bisdemethoxycurcumin (BDMC), one of the main curcuminoids, has numerous biol. activities. However, the low solubility and stability of BDMC limit its application. In this work, in order to improve the solubility and stability of BDMC, we encapsulated BDMC using cetyltrimethylammonium bromide (CTAB) + Tween 20/Tween 60 mixed surfactants. The molar ratio of CTAB to Tween 20/Tween 60 was optimized by response surface anal. The thermodn. parameters (binding constant, enthalpy change, entropy change and Gibbs free energy change) for the interaction of BDMC with CTAB + Tween 20/Tween 60 mixed micelles were obtained by fluorescence spectroscopy and UV-visible absorption spectroscopy. Pos. enthalpy change and entropy change indicated that hydrophobic interaction was the main driving force. Moreover, due to the longer alkyl chains of Tween 60, the encapsulation of BDMC by CTAB + Tween 60 mixed micelles was stronger. The encapsulation of BDMC in the hydrophobic alkyl chains by the mixed micelles was determined by fluorescence polarization technol., time-resolved fluorescence assay, and 1H NMR spectroscopy. Solubilization and stability experiments showed that the solubility of BDMC was improved and the alk. hydrolysis of BDMC was inhibited due to the encapsulation of the mixed micelles. The improvement of the solubility and stability of BDMC was more obvious in CTAB + Tween 60 mixed micelles because of the stronger interaction between them. The above results indicated that CTAB + Tween 20/Tween 60 mixed micelles could be used to encapsulate BDMC to improve its solubility and stability. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Quality Control of Bisdemethoxycurcumin).

Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. 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. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Quality Control of Bisdemethoxycurcumin

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Low-surfactant microemulsion, a smart strategy intended for curcumin oral delivery was written by Dourado, Douglas;Oliveira, Matheus Cardoso de;Araujo, Guilherme Rodolfo Souza de;Amaral-Machado, Lucas;Porto, Dayanne Lopes;Aragao, Cicero Flavio Soares;Alencar, Everton do Nascimento;Egito, Eryvaldo Socrates Tabosa do. And the article was included in Colloids and Surfaces, A: Physicochemical and Engineering Aspects in 2022.Name: Bisdemethoxycurcumin The following contents are mentioned in the article:

This study aimed to develop a low surfactant concentration curcumin-loaded microemulsion (Curc-ME) having a gastrointestinal pH resistance, intended to prospect its oral use for further curcumin release. The effect of excipients on the apparent solubility of curcumin was assessed and a pseudo ternary phase diagram was designed to produce a low-surfactant microemulsion (ME) system. Curcumin was incorporated into the ME (Curc-ME), and the system was further physicochem. and phys. characterized. The entrapment efficiency (EE) was determined by UHPLC. The systems′ stability under storage, and its stability and curcumin release in simulated gastrointestinal fluids (SGIF) were evaluated. The excipients of the ME improved curcumin′s apparent solubility Curc-ME, stabilized with 15% of surfactants, displayed spherical droplets (sized of 21.81 ± 0.20 nm), polydispersity index of 0.07 ± 0.01, viscosity of 5.33 x 10-3 ± 0.01 Pa.s, conductivity of 160 ± 3 μS cm-1, surface tension of 40.37 ± 0.48 dynes/cm and EE of 98 ± 0.73%. Thermal analyses confirmed curcumin entrapment in the core of the system. The system remained stable over 90 days under storage and under SGIF conditions. Curc-ME revealed a modified and complex kinetics release of curcumin in the SGIF. Overall, the results demonstrate that Curc-ME increased the solubility of curcumin, was produced with a remarkable low surfactant concentration, and showed stability and modified curcumin release at the gastrointestinal tract pHs. Therefore, Curc-ME revealed to be a promising candidate to be further explored as a therapeutic agent. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Name: Bisdemethoxycurcumin).

Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. 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.Name: Bisdemethoxycurcumin

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Gas chromatography/electron ionization mass spectrometric analysis of oligomeric Polyethylene Glycol Monoalkyl Ethers was written by Onigbinde, Adebayo O.;Munson, Burnaby;Amos-Tautua, Bamidele M. W.. And the article was included in Research Journal of Applied Sciences, Engineering and Technology in 2013.SDS of cas: 112-59-4 The following contents are mentioned in the article:

Polyethylene Glycol Monoalkyl Ethers, C_xH_2x+1(OC₂H₄)_nOH, (PEGMAE), are polar compounds like Polyethylene Glycols (PEG) and they undergo microbial degradation which produces toxic substances that are potentially dangerous to the environment. Therefore, the purpose of this study is to carry out proper identification and characterization of these compounds The Electron Ionization (EI) and Chem. Ionization (CI) spectra of various PEGMAE were obtained by Gas Chromatog./Mass Spectrometry (GC/MS) and were used to identify and characterize these compounds The characteristic cleavages in the EI and CI reactions of PEGMAEs were also studied. The results obtained showed that the methane CI mass spectra of the PEGMAE contain MH⁺ ions and fragment ions similar to those found in their EI mass spectra. The relative abundances of the MH⁺ ions are low, variable and increase with increasing sample size across the chromatog. peaks; but do not increase with increasing x or n. The base peaks of the low mass oligomers (x ≤ 3) are PEG related (e.g., m/z 45, 59) but those of higher mass oligomers (x ≥ 4) include the ion at m/z 63 (HOC₂H₄OH)H⁺ or m/z 107 (HO(C₂H₄O)₂H)H⁺. There are no (MH-H₂O)⁺ ions or protonated dimer ions (n ≥ 2, x ≥ 2) in the spectra of PEGMAE. The Relative Molar Sensitivities (RMS) or the Relative Sensitivity per G (RSG) increases linearly with mol. polarizabilty or mol. weight with a non-zero intercept. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4SDS of cas: 112-59-4).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. 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. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C 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: 112-59-4

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Evidence of corresponding states in ternary microemulsions of water-alkane-C_iE_j was written by Sottmann, T.;Strey, R.. And the article was included in Journal of Physics: Condensed Matter in 1996.HPLC of Formula: 112-59-4 The following contents are mentioned in the article:

Exptl. evidence of corresponding states in water, n-alkane (C_κH_2κ+2), and n-alkyl polyethylene glycol ether (C_iE_j) systems is presented. Striking similarities in both the phase behavior and the interfacial tensions for a variety of systems are highlighted. For some selected systems the trajectories f the middle phases in the three-phase regime are precisely determined Projections of the middle-phase trajectories onto the ϕ_c-ϕ plane of the phase prism shape nearly perfect parabolae, whereas the projections onto the T-ϕ plane exhibit a sigmoidal shape. Here ϕ_c is the surfactant volume fraction, and ϕ is the oil-in-water-plus-oil volume fraction. It is found that the trajectories collapse into single curves, if the surfactant concentration scale is reduced by the maximum of the parabolae, ϕ̅_c, which is the surfactant volume fraction of the sym. microemulsion, and if the temperature axis is reduced by the difference of the upper and lower critical endpoint temperature, T_u-T_l. It is found that the maximum length scale ξ̅ α ϕ̅_c^-1 set by the surfactant volume fraction can be used to reduce the interfacial tension scale, that is plotting σ_abϕ̅_c^-2 vs. the reduced temperature scale. These reductions yield a remarkable superposition of the interfacial tension data of 17 different systems, the carbon number of the oil κ ranging from 8 to 14, the hydrophilic surfactant head j from 3 to 6 and the surfactant tail length i from 8 to 12. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4HPLC of Formula: 112-59-4).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. 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. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C 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. HPLC of Formula: 112-59-4

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Surface Properties of Alkyl-di(oxyethylene) β-D-Maltoside was written by Fu, Fang;Fan, Yulin;Chen, Langqiu;Zhang, Jing;Li, Jiping;Liao, Jingyi;Zhang, Guochao. And the article was included in Journal of Agricultural and Food Chemistry in 2022.Category: ethers-buliding-blocks The following contents are mentioned in the article:

A series of nonionic disaccharide-based surfactants alkyl-di(oxyethylene) β-D-maltosides ( n = 6-16), e.g. I, were synthesized, and their physicochem. properties were further investigated. Six β-D-maltosides (n = 8-16) exhibited a fan-shaped texture feature, whereas hexyl-di(oxyethylene) β-D-maltoside had the strongest hygroscopicity. Owing to the incorporation of the hydrophilic dioxyethyl spacer (-(OCH₂CH₂)₂-), the related water solubility improved significantly. Tetradecyl-di(oxyethylene) β-D-maltoside had good water solubility, whereas hexadecyl-di(oxyethylene) β-D-maltoside had weak water solubility Meanwhile, the surface tension of β-D-maltosides (n = 6-14) had a decreasing tendency with increasing the alkyl chain length, whereas 4g had the best surface activity. Furthermore, decyl-di(oxyethylene) β-D-maltoside had the best foaming ability and foam stability. Dodecyl-di(oxyethylene) β-D-maltoside I had the best emulsifying property in the rapeseed oil/water system. In contrast, both ammonium dodecyl sulfate (NH₄DS)/I and cetyltrimethylammonium chloride (CTAC)/I binary surfactant systems showed a synergistic effect in surface activity because the C_CMC/CMC^id_mix was <1. NaCl impacted the surface activity of the aqueous I solution through salt-surfactant synergistic effects. The results showed that such surfactants should have potential applications in the related field in the future. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Category: ethers-buliding-blocks).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. 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. 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.Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Curcuminoids Inhibit Angiogenic Behaviors of Human Umbilical Vein Endothelial Cells via Endoglin/Smad1 Signaling was written by Chou, Yi-Fan;Lan, Yu-Hsuan;Hsiao, Jun-Han;Chen, Chiao-Yun;Chou, Pei-Yu;Sheu, Ming-Jyh. And the article was included in International Journal of Molecular Sciences in 2022.Name: Bisdemethoxycurcumin The following contents are mentioned in the article:

Angiogenesis is primarily attributed to the excessive proliferation and migration of endothelial cells. Targeting the vascular endothelial growth factor (VEGF) is therefore significant in anti-angiogenic therapy. Although these treatments have not reached clin. expectations, the upregulation of alternative angiogenic pathways (endoglin/Smad1) may play a critical role in drug (VEGF-neutralizing agents) resistance. Enhanced endoglin expression following a VEGF-neutralizing therapy (semaxanib) was noted in patients. Treatment with an endoglin-targeting antibody augmented VEGF expression in human umbilical vein endothelial cells (HUVECs). Therefore, approaches that inhibit both the androgen and VEGF pathways enhance the HUVECs cytotoxicity and reverse semaxanib resistance. The purpose of this study was to find natural-occurring compounds that inhibited the endoglin-targeting pathway. Curcuminoids targeting endoglin were recognized from two thousand compounds in the Traditional Chinese Medicine Database@Taiwan (TCM Database@Taiwan) using Discovery Studio 4.5. Our results, obtained using cytotoxicity, migration/invasion, and flow cytometry assays, showed that curcumin (Cur) and demethoxycurcumin (DMC) reduced angiogenesis. In addition, Cur and DMC downregulated endoglin/pSmad1 phosphorylation. The study first showed that Cur and DMC demonstrated antiangiogenic activity via the inhibition of endoglin/Smad1 signaling. Synergistic effects of curcuminoids (i.e., curcumin and DMC) and semaxanib on HUVECs were found. This might be attributed to endoglin/pSmad1 downregulation in HUVECs. Combination treatment with curcuminoids and a semaxanib is therefore expected to reverse semaxanib resistance. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Name: Bisdemethoxycurcumin).

Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. 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. 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.Name: Bisdemethoxycurcumin

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem