Tag: M.W:200-300

187973-60-0, In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 187973-60-0, name is 6-Iodopyridazin-3-amine, introducing its new discovery.

HETEROCYCLIC INHIBITORS OF GLUTAMINASE

The invention relates to the heterocyclic compounds of Formula (I) as defined further herein, and pharmaceutical preparations thereof. The invention further relates to methods of treating cancer, immunological or neurological diseases using the heterocyclic compounds of the invention

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.187973-60-0, you can also check out more blogs about187973-60-0

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Pyridazine – Wikipedia,
Pyridazine | C4H4N2936 – PubChem

 

90766-97-5, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.90766-97-5, Name is 5-Bromo-6-phenylpyridazin-3(2H)-one, molecular formula is C10H7BrN2O. In a Article, authors is Sotelo, Eddy£¬once mentioned of 90766-97-5

Pyridazine derivatives 32: Stille-based approaches in the synthesis of 5-substituted-6-phenyl-3(2H)-pyridazinones

A series of 6-phenyl-3(2H)-pyridazinones bearing different substituents in the 5-position of the pyridazinone ring were prepared using Stille-based approaches in the search for new platelet-aggregation inhibitors.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.90766-97-5. In my other articles, you can also check out more blogs about 90766-97-5

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Pyridazine – Wikipedia,
Pyridazine | C4H4N3131 – PubChem

 

5788-58-9, In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 5788-58-9, name is 4,5-Dibromopyridazin-3(2H)-one, introducing its new discovery.

PYRIDAZINONYL MACROCYCLIC HEPATITIS C SERINE PROTEASE INHIBITORS

The present invention relates to compounds of Formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof, which inhibit serine protease activity, particularly the activity of hepatitis C virus (HCV) NS3-NS4A protease. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising a compound of the present invention.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.5788-58-9, you can also check out more blogs about5788-58-9

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Pyridazine – Wikipedia,
Pyridazine | C4H4N3152 – PubChem

 

41933-33-9, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.41933-33-9, Name is 2-Benzyl-4,5-dichloropyridazin-3(2H)-one, molecular formula is C11H8Cl2N2O. In a Article, authors is Riedl, Zsuzsanna£¬once mentioned of 41933-33-9

Synthesis of new pyridazino[4,5-c]isoquinolinones by Suzuki cross-coupling reaction

Suzuki cross-coupling reaction of 2-alkyl(methyl and benzyl)-5-chloro-4-methoxy- and 2-alkyl(methyl and benzyl)-4-chloro-5-methoxypyridazin-3(2H)-ones with 2-formylphenylboronic acid afforded the corresponding biaryl products which were cyclized with ammonia to yield hitherto undescribed pyridazino[4,5-c]isoquinolinones. Removal of the N-benzyl protective group in position 2 yielded the unsubstituted tricyclic pyridazinones.

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 41933-33-9

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Pyridazine – Wikipedia,
Pyridazine | C4H4N3217 – PubChem

 

5788-58-9, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 5788-58-9, Name is 4,5-Dibromopyridazin-3(2H)-one,introducing its new discovery.

Studies on improved synthesis of 2?-deoxyribonucleosides of pyridazine derivatives

A number of 2?-deoxyribonucleosides of halogenated pyridazine derivatives were prepared by glycosylation of their respective potassium or DBU salts in acetone. The reaction yielded predominatly beta-anomers that could be purified by simple crystallization or column chromatography. Of the studied pyridazines and deoxynucleosides, only 4-bromo-6-chloro-pyridazin-3-one and 6-chloro-2-(2?-deoxyribofuranosyl)pyridazin-3-one showed modest inhibition of CK2 kinase.

We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 5788-58-9, and how the biochemistry of the body works.5788-58-9

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Pyridazine – Wikipedia,
Pyridazine | C4H4N3173 – 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 a patent, 1178884-53-1, molecular formula is C5H4BrClN2O, introducing its new discovery. 1178884-53-1

ANTIVIRAL COMPOUNDS

The present invention discloses compounds of Formula I wherein the variables in Formula I are defined as described herein. Also disclosed are pharmaceutical compositions containing such compounds and methods for using the compounds of Formula I in the prevention or treatment of HCV infection.

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Pyridazine – Wikipedia,
Pyridazine | C4H4N2996 – PubChem

 

17321-35-6, Name is 3-Iodo-6-methoxypyridazine, belongs to pyridazine compound, is a common compound. 17321-35-6In an article, authors is Achelle, Sylvain, once mentioned the new application about 17321-35-6.

Oligomers containing ethynylpyridazine moieties: Synthesis, fluorescence and liquid crystalline properties. Diazines 50

Conjugated oligomers with ethynylpyridazine units have been synthetized by Sonogashira and Suzuki cross-coupling reactions. Some of them present interesting liquid crystals properties investigated by differential scanning calorimetry (DSC) and polarized light microscopy. Some of these oligomers are fluorescent.

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Pyridazine | C4H4N3025 – PubChem

 

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.17973-86-3,3,6-Dibromopyridazine,as a common compound, the synthetic route is as follows.

Step 1: To a mixture of 3,6-dibromo-pyridazine (500 mg, 2.10 mmol, for preparation see Pwdrali et al.; J. Org. Chem.; 23, 1958; 778) and 4-pyridylcarbinol (229 mg. 2.10 mmol) in anhydrous tetrahydronfuran (10 mL) at 0 C. under argon was added sodium hydride (302 mg, 12.6 mmol). The reaction mixture was warmed up to RT and then was stirred at 50 C. under argon for 6 h. After cooled to 0 C., the resultant orange mixture was diluted with ethyl acetate (20 mL) and then excess sodium hydride was quenched by water until no bubble occurred. The organic layer was collected and washed by brine (3¡Á10 mL) and dried over anhydrous Na2SO4, filtered, and evaporated in vacuo, which afforded 400 mg (1.50 mmol, 71% yield) of 1-bromo-4-(4-pyridylmethoxy)pyridazine as an oil. The crude product was pure enough to carried out next step reaction without further purification. 1H-NMR (MeOH-d4) 8.52-8.54 (m, 2H), 7.80 (d, 1H), 7.52-7.54 (m, 2H), 7.25 (d, 1H), 5.60 (s, 2H); MS LC 266 M+, 269 (M+3H)+, cacl. 266; TLC (3:2 v/v ethyl acetate-hexanes) Rf=0.20.

17973-86-3, 17973-86-3 3,6-Dibromopyridazine 248852, apyridazine compound, is more and more widely used in various fields.

Reference£º
Patent; Bayer Pharmaceuticals Corporation; US6903101; (2005); B1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

 

187973-60-0, 6-Iodopyridazin-3-amine is a pyridazine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A 10 mL round-bottomed flask containing a magnetic stirbar was charged with CuI (0.1 mmol) followed by L-hydroxyproline (0.2 mmol),6-iodopyridazin-3-amine (1.3 mmol) and K3PO4 (3.0 mmol). The flask wasflushed with N2 and a solution of the appropriate amine (1.0 mmol) inanhydrous DMSO (1.5 mL) was then added. The mixture was stirred under N2at 50 C for 24 h. MeOH (5 mL) and H2O (5 mL) were added and the stirredmixture was neutralised by dropwise addition of AcOH. The resultant solidswere allowed to settle out and the supernatant solution added to the top of astrong cation exchange (SCX) column. The remaining solid was washed withfurther MeOH (5 mL), and the washings also added to the SCX column. Thesolution was allowed to elute slowly through the column, which was thenflushed with further MeOH. These MeOH washings were discarded. A 1 Msolution of NH3 in MeOH was flushed through until elution of the product wascomplete and the solvent was evaporated under reduced pressure to yield acrude material. Purification was done by flash silica chromatography, elutiongradient typically 0-10% MeOH in CH2Cl2. Relevant fractions were evaporatedto dryness to afford the desired product., 187973-60-0

The synthetic route of 187973-60-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Bethel, Paul A.; Roberts, Bryan; Bailey, Andrew; Tetrahedron Letters; vol. 55; 37; (2014); p. 5186 – 5190;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

 

187973-60-0, 6-Iodopyridazin-3-amine is a pyridazine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Method H: to a solution of compound 12a (788 mg, 3.24 mmol)in n-butanol (12 mL) was added compound 3 (717 mg, 3.24 mmol).The mixture was refluxed for 16 h, evaporated to dryness, and theresidue was suspended in CHCl3. The solution was made alkalinewith a 30% ammonium hydroxide solution and extracted withCHCl3. The combined organic layers were dried over MgSO4,filtered, and evaporated under reduced pressure to give the desiredimidazo[1,2-b]pyridazine 13a (1.20 g, 100%) as a brown solid., 187973-60-0

The synthetic route of 187973-60-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Moine, Esperance; Dimier-Poisson, Isabelle; Enguehard-Gueiffier, Cecile; Loge, Cedric; Penichon, Melanie; Moire, Nathalie; Delehouze, Claire; Foll-Josselin, Beatrice; Ruchaud, Sandrine; Bach, Stephane; Gueiffier, Alain; Debierre-Grockiego, Francoise; Denevault-Sabourin, Caroline; European Journal of Medicinal Chemistry; vol. 105; (2015); p. 80 – 105;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem