Category: 452339-73-0

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, 452339-73-0, name is (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one, introducing its new discovery. COA of Formula: C13H15NO4

Synthesis and structure-activity relationships of long-acting beta2 adrenergic receptor agonists incorporating arylsulfonamide groups

A series of saligenin alkoxyalkylphenylsulfonamide beta2 adrenoceptor agonists were prepared by reacting a protected saligenin oxazolidinone with alkynyloxyalkyl bromides, followed by Sonogashira reaction, hydrogenation, and deprotection. The meta-substituted primary sulfonamide was more potent than the paraand the ortho-analogues. Primary sulfonamides were more potent than the secondary and tertiary analogues. The onset and duration of action in vitro of selected compounds was assessed on isolated superfused guinea pig trachea. Sulfonamide 29b had the best profile of potency, selectivity, onset, and duration of action on both guinea pig trachea and human bronchus. Furthermore, 29b was found to have low oral bioavailability in rat and dog and also to have long duration of action in an in vivo model of bronchodilation. Crystalline salts of 29b were identified that had suitable properties for inhaled administration. A proposed binding mode for 29b to the beta2-receptor is presented.

We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 452339-73-0, and how the biochemistry of the body works.COA of Formula: C13H15NO4

Reference£º
Oxazolidine – Wikipedia,
Oxazolidine | C3H2445NO – PubChem

 

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. category: oxazolidine. Introducing a new discovery about 452339-73-0, Name is (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one

PROCESS FOR THE PREPARATION OF VILANTEROL AND INTERMEDIATES THEREOF

An improved process for the preparation of vilanterol and pharmaceutically acceptable salts thereof is disclosed. More specifically the improved process for preparing intermediates for the preparation of vilanterol is disclosed.

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.category: oxazolidine, you can also check out more blogs about452339-73-0

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Oxazolidine – Wikipedia,
Oxazolidine | C3H2436NO – PubChem

 

452339-73-0, Name is (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one, belongs to oxazolidine compound, is a common compound. COA of Formula: C13H15NO4In an article, once mentioned the new application about 452339-73-0.

The discovery of long-acting saligenin beta2 adrenergic receptor agonists incorporating a urea group

A series of novel, potent and selective human beta2 adrenoceptor agonists incorporating a urea moiety on the terminal right-hand side phenyl ring of (R)-salmeterol is presented. Urea 9j had long duration of action in vitro on guinea pig trachea, and also in vivo similar to that of salmeterol. It had lower oral absorption and bioavailability than salmeterol in both rat and dog. It had a turnover ratio similar to salmeterol, with no evidence for formation of any aniline metabolites in human liver microsomes and hepatocytes. However no crystalline salts suitable for inhaled delivery were identified.

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Oxazolidine – Wikipedia,
Oxazolidine | C3H2447NO – PubChem

 

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Quality Control of (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 452339-73-0, Name is (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one, molecular formula is C13H15NO4

Synthesis and structure-activity relationships of long-acting beta2 adrenergic receptor agonists incorporating metabolic inactivation: An antedrug approach

A series of saligenin beta2 adrenoceptor agonist antedrugs having high clearance were prepared by reacting a protected saligenin oxazolidinone with protected hydroxyethoxyalkoxyalkyl bromides, followed by removal of the hydroxy-protecting group, alkylation, and final deprotection. The compounds were screened for beta2, beta1, and beta3 agonist activity in CHO cells. The onset and duration of action in vitro of selected compounds were assessed on isolated superfused guinea pig trachea. Compound 13f had high potency, selectivity, fast onset, and long duration of action in vitro and was found to have long duration in vivo, low oral bioavailability in the rat, and to be rapidly metabolized. Crystalline salts of 13f (vilanterol) were identified that had suitable properties for inhaled administration. A proposed binding mode for 13f to the beta2-receptor is presented.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. Quality Control of (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 452339-73-0, in my other articles.

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Oxazolidine – Wikipedia,
Oxazolidine | C3H2444NO – PubChem

 

452339-73-0, Name is (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one, belongs to oxazolidine compound, is a common compound. HPLC of Formula: C13H15NO4In an article, once mentioned the new application about 452339-73-0.

PHENETHANOLAMINE DERIVATIVES FOR THE TREATMENT OF RESPIRATORY DISEASES

The present invention relates to novel compounds of formula (I), to a process for their manufacture, to pharmaceutical compositions containing them, and to their use in therapy, in particular their use in the prophylaxis and treatment of respiratory diseases.

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Oxazolidine – Wikipedia,
Oxazolidine | C3H2441NO – PubChem

 

452339-73-0, Name is (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one, belongs to oxazolidine compound, is a common compound. name: (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-oneIn an article, once mentioned the new application about 452339-73-0.

Phenethanolamine derivatives and its preparation and use (by machine translation)

The invention relates to a I expressed by following Phenethanolamine derivatives, the phenethanolamines derivatives may be used as beta 2 receptor agonist. (by machine translation)

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Oxazolidine – Wikipedia,
Oxazolidine | C3H2435NO – PubChem

 

452339-73-0, Name is (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one, belongs to oxazolidine compound, is a common compound. Application In Synthesis of (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-oneIn an article, once mentioned the new application about 452339-73-0.

MEDICINAL COMPOUNDS

The present invention relates to novel compounds of formula (I), to a process for their manufacture, to pharmaceutical compositions containing them, and to their use in therapy, in particular their use in the prophylaxis and treatment of respiratory diseases.

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Oxazolidine – Wikipedia,
Oxazolidine | C3H2438NO – PubChem

 

452339-73-0, The molecularity of an elementary reaction is the number of molecules that collide during that step in the mechanism. If there is only a single reactant molecule in an elementary reaction, that step is designated as unimolecular. 452339-73-0, name is (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one. A new synthetic method of this compound is introduced below.

Sodium hydride (60% oil dispersion, 1.4g) was added to a stirred solution of (5R)- (2, 2- DIMETHYL-4H-1, 3-BENZODIOXIN-6YL)-1, 3OXAZOLIDIN-2-ONE (6. 0G) in dry dimethylformamide (80ML) at 0 under nitrogen. After 20 min a solution of 1- {4- [ (6-BROMOHEXYL) oxy] butyl}-4- iodobenzene (12.6g) in dry dimethylformamide (30ML) was added dropwise. The mixture was stirred for 15h at ambient temperature. The mixture was poured into an aqueous ammonium chloride solution (700MI) and extracted into ethyl acetate. The organic extracts were washed with water, dried (NA2SO4) and evaporated. Purification by chromatography on a biotage cartridge (90g) using ether-petroleum ether (40-60) (4: 1) gave the title compound as a clear oil (10G). LCMS RT = 4.19 min.

Any one of these steps may be slow and thus may serve as the rate determining step. In general, however, in the presence of the catalyst, the overall rate of the reaction is faster than it would be if the reactants were in the gas or liquid phase.

Reference£º
Patent; GLAXO GROUP LIMITED; WO2004/39762; (2004); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

 

452339-73-0, The molecularity of an elementary reaction is the number of molecules that collide during that step in the mechanism. If there is only a single reactant molecule in an elementary reaction, that step is designated as unimolecular. 452339-73-0, name is (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one. A new synthetic method of this compound is introduced below.

A solution of (5R)-5-(2, 2-dimethyl-4H-1, 3-benzodioxin-6-yl)-1, 3-oxazolidin-2-one (Example 1 viii) (503mg) in DMF (10mL) was treated with sodium hydride (60% dispersion in mineral oil) (97mg) under nitrogen for 20 min. A solution of 1-[2-(benzyloxy) ethoxy] -4- (2-bromoethyl) benzene (676mg) in DMF (5 mL) was added and the reaction stirred for a further 2 h. The reaction mixture was concentrated in vacuo then the residue was prified by chromatography (Biotage, 40g) eluting with EtOAc-petroleum ether (2: 3) to give the title compound (585mg). LCMS RT = 3.66 min

Any one of these steps may be slow and thus may serve as the rate determining step. In general, however, in the presence of the catalyst, the overall rate of the reaction is faster than it would be if the reactants were in the gas or liquid phase.

Reference£º
Patent; GLAXO GROUP LIMITED; WO2003/91204; (2003); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

 

452339-73-0, (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A solution of (5R)-5-(2, 2-DIMETHYL4H-1, 3-BENZODIOXIN-6-YL)-1, 3-OXAZOLIDIN-2-ONE (2. 00g) (WO 02/066422) in DMF (60ML) under nitrogen was treated with sodium hydride (60% dispersion in mineral oil, 385mg) and the mixture stirred at 20 for 30min. A solution of 1,6-dibromohexane (4. 94MOI) was added and the mixture was stirred at 20 for 3h. Phosphate buffer solution (pH 6.5, 30MI) and water (150ML) were added and the mixture was extracted with ET20. The extract was washed with water and dried (Na2SO4). The solvent was evaporated in vacuo and the residue purified by flash chromatography on silica gel. Elution with DCM then MEOH-DCM (1: 50) gave the title compound (2. 565G). LCMS RT = 3. 71 min.

452339-73-0, As the paragraph descriping shows that 452339-73-0 is playing an increasingly important role.

Reference£º
Patent; GLAXO GROUP LIMITED; WO2004/37768; (2004); A2;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem