Category: Tetrahydrofurans

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent£¬Which mentioned a new discovery about 4344-84-7, molcular formula is C5H6O4, introducing its new discovery. , 4344-84-7

Zidovudine derivatives having antibacterial activity and its preparation method and application (by machine translation)

The invention discloses a Combivir derivative and its preparation method and application, which belongs to the antibacterial activity of the medicament with the synthesis technology field. The technical scheme of the present invention is to point: zidovudine derivatives having antibacterial activity, structural formula is:, wherein R is C1 – 4 Alkyl or a halogen atom. The invention also discloses the zidovudine derivatives having antibacterial activity of specific synthetic process and its application in preparing antibacterial drug. The invention according to zidovudine containing azido group in the molecule, by reacting it with click with different substituents of the aniline base alkyne apperception compound reaction to get zidovudine derivatives, and selecting the Staphylococcus aureus – gram positive bacteria, gram-negative bacteria and fungi – Escherichia coli – Candida albicans to the synthesized Combivir derivative of the in vitro antibacterial activity determination, the results show that the compounds demonstrate better antibacterial activity. (by machine translation)

Because enzymes can increase reaction rates by enormous factors and tend to be very specific, 4344-84-7, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 4344-84-7

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

52449-98-6, Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 52449-98-6

Indole derivatives

The invention relates to 1-(R1)-2-(R2)-3-(Y-X?NH-A- or Z-A-)-4,5,6,7-R)0.4-indoles, and their acid addition salts where the compounds are basic, wherein A is C1-4 alkylene, X is >CH2, >C=O or >C=S, and the other symbols have various defined values, and to pharmaceutical, skin-protective and cosmetic compositions which comprise them.

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.4100-80-5, Name is 3-Methyldihydrofuran-2,5-dione, molecular formula is C5H6O3, 4100-80-5. In a Article, authors is Templier, Joelle£¬once mentioned of 4100-80-5

Comparative study of two fractions of riverine dissolved organic matter using various analytical pyrolytic methods and a 13C CP/MAS NMR approach

Two fractions of dissolved organic matter (DOM) from a French river, the Gartempe, were obtained using the XAD resin fractionation procedure and were termed hydrophobic acid (HPOA) and transphilic acid (TPIA) according to this method. The composition of these two fractions was investigated with solid state CP/MAS 13C NMR, Curie point pyrolysis at 650C, with and without tetramethylammonium hydroxide (TMAH), and off-line TMAH thermochemolysis at 250C. Separation and identification of the released compounds were performed using gas-chromatography/mass spectrometry (GC/MS). The combination of these techniques allowed determination of the molecular characteristics of each fraction and showed large differences in composition. Solid state CP/MAS 13C NMR revealed a major contribution of lignin-derived units to the hydrophobic acid fraction and the predominance of cellulose in the transphilic acid fraction. Identification of specific molecular structures upon conventional on-line pyrolysis revealed a predominantly lignin type origin for the HPOA fraction and a cellulose one for the TPIA fraction, whereas on-line TMAH/pyrolysis confirmed the presence of acids, phenolic acids and aliphatic diacids, also indicated by solid state CP/MAS 13C NMR in both fractions. Off-line TMAH thermochemolysis was determinant for evidencing the presence of amino acids.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. 4100-80-5, In my other articles, you can also check out more blogs about 4100-80-5

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

4971-56-6, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 4971-56-6, Name is Furan-2,4(3H,5H)-dione,introducing its new discovery.

Synthesis and biological evaluation of 4-aza-2,3- dihydropyridophenanthrolines as tubulin polymerization inhibitors

A series of novel 4-aza-2,3-dihydropyridophenanthrolines 12(a-t) were synthesized by a one-step three component condensation of 1,10-phenanthroline amine, tetronic acid and various aromatic aldehydes. These were evaluated for their antiproliferative activity against three human cancer cell lines (MIAPACA, MCF-7 and HeLa) using SRB assay. Majority of the tested compounds exhibited significant anticancer activity on these cell lines and interestingly compounds 12h and 12i were more potent than etoposide and podophyllotoxin against all three tested cancer cell lines with GI50 values in the range of 0.01-0.5 muM. Furthermore, these compounds showed significant inhibition of tubulin polymerization which is comparable to that of podophyllotoxin and disrupted microtubule network by accumulating tubulin in the soluble fraction. The flow cytometry analysis confirmed that the synthesized compounds led to cell cycle arrest at the G2/M phase. Moreover, the structure activity relationship studies in this series are also discussed.

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

4971-56-6, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.4971-56-6, Name is Furan-2,4(3H,5H)-dione, molecular formula is C4H4O3. In a Article, authors is Savina£¬once mentioned of 4971-56-6

Synthesis of novel furoquinolines and furobenzodiazepines from tetronic acid

Condensation of tetronic acid with 2-cyano-, 2-ethoxycarbonyl-, 2-carboxy-, and 2-aminoanilines gave novel furoquinolines and furobenzodiazepines.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 4971-56-6

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

2144-40-3, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 2144-40-3, molcular formula is C6H12O3, introducing its new discovery.

NOVEL METHOD FOR PREPARING HIGHLY TRANSPARENT AND HIGHLY HEAT-RESISTANT POLYCARBONATE ESTER

The present invention relates to a method for preparing a bio-based polycarbonate ester, the method comprising the steps of: (1) preparing a compound represented by chemical formula 3 by converting a compound represented by chemical formula 2 into an intermediate reactant having an easily detachable functional group, followed by a nucleophilic reaction with phenol; and (2) preparing a compound including a repeat unit represented by chemical formula 1 by a polycarbonate melt condensation polymerization of the compound represented by chemical formula 3, prepared in step (1), a compound represented by chemical formula 4, and 1,4:3,6-dianhydrohexitol. The bio-based polycarbonate ester according to the present invention can regulate merits and demerits of physical properties obtained from each repeat unit, and can be favorably used for various uses due to high degrees of transparency and heat resistance thereof.

Because enzymes can increase reaction rates by enormous factors and tend to be very specific, 2144-40-3, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 2144-40-3

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

219823-47-9, Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent£¬Which mentioned a new discovery about 219823-47-9

according to handkerchief row only crystal form and its preparation method, pharmaceutical composition and use thereof (by machine translation)

The present invention relates to new crystalline forms of purifying according to handkerchief row, the new crystal compared with the known crystal form has a plurality of improved characteristics, is suitable for the application of pharmaceutical preparation. The invention also relates to novel crystal forms of the preparation method, the medicament composition and its use in treating and/or preventing diabetes mellitus type II use of the medicament. (by machine translation)

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

4971-56-6, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.4971-56-6, Name is Furan-2,4(3H,5H)-dione, molecular formula is C4H4O3. In a article£¬once mentioned of 4971-56-6

One-pot synthesis of N-substituted azapodophyllotoxin derivatives under microwave irradiation

A series of new, N-substituted azapodophyllotoxin derivatives were synthesized via a three-component reaction of an aldehyde, an enaminone and tetronic acid in glacial acetic acid, under microwave irradiation, without a catalyst. This new protocol has the advantages of shorter time, higher yields, lower cost and broader substrate scope, as well as easier operation. Georg Thieme Verlag Stuttgart.

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Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

4971-56-6, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.4971-56-6, Name is Furan-2,4(3H,5H)-dione, molecular formula is C4H4O3. In a article£¬once mentioned of 4971-56-6

Synthesis and biological activities of 1-pyridylisoquinoline and 1-pyridyldihydroisoquinoline derivatives as PDE4 inhibitors

A novel series of 1-pyridylisoquinoline and 1-pyridyldihydroisoquinoline derivatives has been prepared. These compounds showed potent PDE4 inhibitory activities and a broad margin between the Ki value of the rolipram binding affinity and the IC50 value of PDE4 inhibition. They also exhibited potent inhibitory activities toward LPS-induced TNF-alpha production in mice.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. 4971-56-6, In my other articles, you can also check out more blogs about 4971-56-6

Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 52079-23-9, molcular formula is C4H6O3, introducing its new discovery. 52079-23-9

EPOTHILONE DERIVATIVES, METHOD FOR PRODUCING SAME AND THEIR PHARMACEUTICAL USE

This invention relates to the new epothilone derivatives of general formula I, 1in which substituents Y, Z R2a, R2b, R3, R4a, R4b, D?E, R5, R6, R7, R8 and X have the meanings that are indicated in more detail in the description. The new compounds interact with tubulin by stabilizing microtubuli that are formed. They are able to influence the cell-splitting in a phase-specific manner and are suitable for treating malignant tumors, for example, ovarian, stomach, colon, adeno-, breast, lung, head and neck carcinomas, malignant melanomas, acute lymphocytic and myelocytic leukemia. In addition, they are suitable for anti-angiogenesis therapy as well as for treatment of chronic inflammatory diseases (psoriasis, arthritis). To avoid uncontrolled proliferation of cells and for better compatibility of medical implants, they can be applied or introduced into polymer materials. The compounds according to the invention can be used alone or to achieve additive or synergistic actions in combination with other principles and classes of substances that can be used in tumor therapy.

Because enzymes can increase reaction rates by enormous factors and tend to be very specific, 52079-23-9, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 52079-23-9

Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem