Tag: 100-200

Coulomb and Overlap Self-Similarities: A Comparative Selectivity Analysis of Structure-Function Relationships for Auxin-like Molecules was written by Ferro, Noel;Gallegos, Ana;Bultinck, Patrick;Jacobsen, Hans-Joerg;Carbo-Dorca, Ramon;Reinard, Thomas. And the article was included in Journal of Chemical Information and Modeling in 2006.Recommanded Product: 2-(4-Methoxyphenoxy)acetic acid This article mentions the following:

Auxins are defined mainly by a set of physiol. actions, but the structure-effect relationship still is based on chem. intuition. Currently a well-defined auxin mol. structure is not available. The existence of different auxin binding proteins and mechanisms of auxin action, the wide diversity of the auxin mols., and the pleiotropic effects of auxin imply a completely different mechanism as described for the animal hormone concept. Here, we present a computational approach dealing with semiempirical optimizations of the auxin mols. themselves, which represent a number of about 250 different chem. structures. Our approach uses mol. quantum similarity measures and addnl. quantum variables for the anal. of auxin-like mols. The finding of similarities in mols. by focusing basically on their electron structure results in new insights in the relationship of the different auxin groups. Addnl. statistical anal. allows the identification of relationships between similarity groups and their biol. activity, resp. It is postulated that the auxin-like mol. recognition depends more on specific mol. assembling states than on a specific ring system or side chain. In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Recommanded Product: 2-(4-Methoxyphenoxy)acetic acid).

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Recommanded Product: 2-(4-Methoxyphenoxy)acetic acid

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

Generation and Characterization of Anti-Glucosepane Antibodies Enabling Direct Detection of Glucosepane in Retinal Tissue was written by Streeter, Matthew D.;Rowan, Sheldon;Ray, Jason;McDonald, David M.;Volkin, Jonathan;Clark, Jonathan;Taylor, Allen;Spiegel, David A.. And the article was included in ACS Chemical Biology in 2020.Application of 111-77-3 This article mentions the following:

Although there is ample evidence that the advanced glycation end-product (AGE) glucosepane contributes to age-related morbidities and diabetic complications, the impact of glucosepane modifications on proteins has not been extensively explored due to the lack of sufficient anal. tools. Here, the authors report the development of the first polyclonal anti-glucosepane antibodies using a synthetic immunogen that contains the core bicyclic ring structure of glucosepane. The authors study the recognition properties of these antibodies through ELISAs involving an array of synthetic AGE derivatives and determine them to be both high-affinity and selective in binding glucosepane. The authors then employ these antibodies to image glucosepane in aging mouse retinae via immunohistochem. The authors’ studies demonstrate for the first time accumulation of glucosepane within the retinal pigment epithelium, Bruch’s membrane, and choroid: all regions of the eye impacted by age-related macular degeneration. Co-localization studies further suggest that glucosepane colocalizes with lipofuscin, which has previously been associated with lysosomal dysfunction and has been implicated in the development of age-related macular degeneration, among other diseases. The authors believe that the anti-glucosepane antibodies described in this study will prove highly useful for examining the role of glycation in human health and disease. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3Application of 111-77-3).

2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.Application of 111-77-3

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

Topological Effects of Dendronized Polymers on Their Thermoresponsiveness and Microconfinement was written by Xu, Gang;Zhang, Jiaxing;Jia, Ruitong;Li, Wen;Zhang, Afang. And the article was included in Macromolecules (Washington, DC, United States) in 2022.SDS of cas: 112-49-2 This article mentions the following:

Topol. structures can provide dendritic polymers with featured properties through cooperative effects beyond their mol. structures. Herein, we report the synthesis of a series of oligoethylene glycol (OEG)-based dendronized polymers, which carry the first generation of 2-fold, 4-fold, or 6-fold dendritic OEG pendants with methoxyl or ethoxyl terminals. Depending on the OEG branching d., these polymers show different mol. thicknesses and exhibit characteristic thermoresponsiveness with phase transition temperatures in the range of 16.6-67.2鎺矯. Furthermore, the higher the OEG branching d., the higher the shielding to the interior parts from the dendritic OEGs cooperatively to exhibit “mol. envelope” effects. This mol. microconfinement formed from the crowded OEG dendrons was further investigated through covalently linked or phys. mixed dye. Topol. structures of the polymers are discovered to play a key role in encapsulation of the dye guest and can modulate its transition within the aggregates through the thermally induced phase transitions. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2SDS of cas: 112-49-2).

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. Ethers feature bent C閳ユ彊閳ユ弲 linkages. In dimethyl ether, the bond angle is 111鎺?and C閳ユ彊 distances are 141 pm. The barrier to rotation about the C閳ユ彊 bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.SDS of cas: 112-49-2

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

Total Synthesis and Evaluation of B-Homo Palmatine and Berberine Derivatives as p300 Histone Acetyltransferase Inhibitors was written by Yang, Zhongzhen;Zhang, Yong;Chen, Xin;Li, Weijian;Li, Guo-Bo;Wu, Yong. And the article was included in European Journal of Organic Chemistry in 2018.Related Products of 3929-47-3 This article mentions the following:

Palmatine and berberine, structurally similar isoquinoline alkaloids exhibiting a broad range of biol. activities, were recently found to inhibit p300 histone acetyltransferase (HAT), a potential therapeutic target for treating transcriptional activator-driven malignancies and diseases. Here, we report the first total synthesis of B-homo palmatine and berberine derivatives, which were synthesized from 3,4-dimethoxybenzaldehyde and benzo[d][1,3]dioxole-5-carbaldehyde in nine steps in 13.8% and 16.9% overall yields, resp. A number of other new B-homo palmatine and berberine derivatives were also prepared These derivatives display good inhibitory activity against p300 HAT; compound I manifests the most potent inhibition with an IC₅₀ value of 0.42 娓璏. Cell-based assays revealed that I exhibits certain inhibitory activity against HCG27, HT1080, and Z-138 cell lines, and no visible activity towards other cancer cell lines tested, reflecting that I has low cytotoxicity and acts against some types of cancer cells. In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3Related Products of 3929-47-3).

3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3) belongs to ethers. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Related Products of 3929-47-3

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

Iridium-Catalyzed Carbonylative Synthesis of Chromenones from Simple Phenols and Internal Alkynes at Atmospheric Pressure was written by Zhu, Fengxiang;Li, Yahui;Wang, Zechao;Wu, Xiao-Feng. And the article was included in Angewandte Chemie, International Edition in 2016.HPLC of Formula: 16356-02-8 This article mentions the following:

A novel procedure on the carbonylative synthesis of chromenones was developed. With simple phenols and internal alkynes as the substrates, various chromenones were isolated in moderate to good yields with excellent regioselectivity and functional-group tolerance by using iridium as the catalyst and copper as the promotor at atm. pressure. Notably, this is the first example on carbonylative annulation of simple phenols and alkynes. In the experiment, the researchers used many compounds, for example, 1,4-Dimethoxy-2-butyne (cas: 16356-02-8HPLC of Formula: 16356-02-8).

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.HPLC of Formula: 16356-02-8

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

Regioselective synthesis and cytotoxicities of camptothecin derivatives modified at the 7-, 10- and 20-positions was written by Pan, Xian-Dao;Han, Rui;Sun, Piao-Yang. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2003.Application In Synthesis of 2-(4-Methoxyphenoxy)acetic acid This article mentions the following:

A series of 7-acyloxymethylcamptothecin and 20-O-acyl-7-acyloxymethylcamptothecin derivatives were regioselectively prepared on different solvents. 7-Acyloxymethylcamptothecins possess more efficacy than 20-O-acyl-7-acyloxymethylcamptothecins against six human cancer cell lines in vitro. In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Application In Synthesis of 2-(4-Methoxyphenoxy)acetic acid).

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive. The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom. Complexation of the magnesium atom stabilizes the Grignard reagent and helps to keep it in solution.Application In Synthesis of 2-(4-Methoxyphenoxy)acetic acid

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

Blue-light Induced Iron-Catalyzed 浼?Alkylation of Ketones was written by Abdallah, Marie-Samira;Joly, Nicolas;Gaillard, Sylvain;Poater, Albert;Renaud, Jean-Luc. And the article was included in Organic Letters in 2022.Application In Synthesis of (4-Methoxyphenyl)methanol This article mentions the following:

A visible-light induced iron-catalyzed 浼?alkylation of ketones was reported. The photocatalytic system was based on the single diaminocyclopentadienone iron tricarbonyl complex. Two catalytic intermediates of this complex were able to harvest light allowing the synthesis of substituted aromatic and aliphatic ketones such as RC(O)CH₂CH₂R¹ [R = t-Bu, 4-MeC₆H₄, 2-furyl, etc.; R¹ = Ph, 2-thienyl, 4-BrC₆H₄, etc.] at room temperature using the borrowing hydrogen strategy in the presence of various substituted primary alcs. as alkylating reagents. Preliminary mechanistic studies unveiled the role of light for both the dehydrogenation and reduction step. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Application In Synthesis of (4-Methoxyphenyl)methanol).

(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Application In Synthesis of (4-Methoxyphenyl)methanol

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

Facile Synthesis of Single Iron Atoms over MoS₂ Nanosheets via Spontaneous Reduction for Highly Efficient Selective Oxidation of Alcohols was written by Li, Zhijun;Li, Honghong;Yang, Zening;Lu, Xiaowen;Ji, Siqi;Zhang, Mingyang;Horton, J. Hugh;Ding, Honghe;Xu, Qian;Zhu, Junfa;Yu, Jin. And the article was included in Small in 2022.Formula: C8H10O2 This article mentions the following:

The facile creation of high-performance single-atom catalysts (SACs) is intriguing in heterogeneous catalysis, especially on 2D transition-metal dichalcogenides. An efficient spontaneous reduction approach to access atomically dispersed iron atoms supported over defect-containing MoS₂ nanosheets is herein reported. Advanced characterization methods demonstrate that the isolated iron atoms situate atop of molybdenum atoms and coordinate with three neighboring sulfur atoms. This Fe SAC delivers exceptional catalytic efficiency (1 atm O₂ @ 120鎺? in the selective oxidation of benzyl alc. to benzaldehyde, with 99% selectivity under almost 100% conversion. The turnover frequency is calculated to be as high as 2105 h^-1. Moreover, it shows admirable recyclability, storage stability, and substrate tolerance. D. functional theory calculations reveal that the high catalytic activity stems from the optimized electronic structure of single iron atoms over the MoS2 support. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Formula: C8H10O2).

(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. Ethers feature bent C閳ユ彊閳ユ弲 linkages. In dimethyl ether, the bond angle is 111鎺?and C閳ユ彊 distances are 141 pm. The barrier to rotation about the C閳ユ彊 bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.Formula: C8H10O2

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

Utiziling a copper-free Sonogashira reaction in the synthesis of the leukotriene a4 hydrolase modulator batatasin IV was written by Petruncio, Greg;Girgis, Michael;Moummi, Sanae;Jayatilake, Meth;Lee, Kyung Hyeon;Paige, Mikell. And the article was included in Tetrahedron Letters in 2020.Synthetic Route of C8H8O3 This article mentions the following:

Batatasin IV is a dihydrostilbenoid isolated from Chinese yams which was shown to have inhibitory activities against plant growth. Later studies showed that this compound may exhibit anti-inflammatory properties by inhibiting the epoxide hydrolase activity of the leukotriene A₄ hydrolase enzyme. To access the dihydrostilbenoid skeleton, a copper-free SPhos-mediated Sonogashira reaction was conceived and the substrate scope was explored. Our results indicate that the reaction can tolerate the presence of free alcs., aldehydes, nitro groups, and anilinyl groups. However, a substituent with an acidic phenol or carboxylic acid group gave significantly lower yields. Next, a total synthesis of batatasin IV was accomplished in 16% overall yield incorporating the reported copper-free Sonogashira reaction. Finally, we show that batatasin IV inhibits the hydrolysis of alanine p-nitroanilide by leukotriene A₄ hydrolase with an IC₅₀ of 91.4娓璏. In the experiment, the researchers used many compounds, for example, 3-Hydroxy-5-methoxybenzaldehyde (cas: 57179-35-8Synthetic Route of C8H8O3).

3-Hydroxy-5-methoxybenzaldehyde (cas: 57179-35-8) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Synthetic Route of C8H8O3

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

A New Benzoquinone from Antrodia camphorata was written by Chen, C. Y.;Wang, J. J.;Kao, C. L.;Li, H. T.;Wu, M. D.;Cheng, M. J.. And the article was included in Chemistry of Natural Compounds in 2022.Synthetic Route of C9H10O4 This article mentions the following:

A new benzoquinone, 2-hydroxy-3-methoxy-5-methyl-p-benzoquinone (1), along with 11 known compounds including three benzoquinones, 2-methoxy-6-methyl-p-benzoquinone (2), 2,3-dimethoxy-5-methyl-pbenzoquinone (3), and 2-hydroxy-5-methoxy-3-methyl-p-benzoquinone (4); three lignans, 4-hydroxysesamin (5), (+)-sesamin (6), and aptosimon (7); five benzenoids, 2,4-dimethoxy-6-methylbenzene-1,3-diol (8), benzocamphorin A (9), benzocamphorin D (10), 2,2閳?5,5閳?tetramethoxy-3,4,3閳?4閳?bi-methylenedioxy-6,6閳?dimethylbiphenyl (11), and 4,7-dimethoxy-5-methyl-1,3-benzodioxole (12), were isolated from the fruiting body of Antrodia camphorata (Polyporaceae). These compounds were characterized and identified by phys. and spectral evidences. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Synthetic Route of C9H10O4).

2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Synthetic Route of C9H10O4

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