33 results about "Vilanterol" patented technology

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.

The invention provides a new Vilanterol intermediate compound 2. According to the invention, primary amino is introduced into a compound 5 through Delepine reaction, then di-tert-butyl dicarbonate is employed for amino protection, and the strategy greatly improves the yield and atom utilization rate. On the other hand, cheap and easily available urotropin is adopted in the invention to lower the cost, thus being easy for industrial large-scale production. Compared with the prior art, the yield of the method involved in the invention is increased to 65% by three-step reaction, also use of expensive di-tert-butyl iminodicarboxylate and cesium carbonate is avoided, the cost is reduced, the operation is simple, and the conditions are mild. Therefore, the method is suitable for industrial preparation of Vilanterol and its key intermediate (5R)-5-(2, 2-dimethyl-4H-1, 3-benzodioxin-6-yl)-1, 3 oxazolidine-2-one. (formula of compound 2).

The invention discloses a vilanterol trifluoromethanesulfonate-containing pharmaceutical preparation, which comprises the following main active ingredients: long-acting beta2 receptor agonist vilanterol trifluoromethanesulfonate, glucocorticoid drug fluticasone furoate and long-acting anticholinergic drug aclidinium bromide, or physiologically acceptable salts of the fluticasone furoate and aclidinium bromide, thus composing a compound preparation. The vilanterol trifluoromethanesulfonate has the effect of continuously dilating blood vessels for 24 hours; the fluticasone furoate is fast-acting potent glucocorticoid, and the duration time of the drug is longer than that of other glucocorticoids; the aclidinium bromide is long-acting cholinergic receptor antagonist, and combines with beta2 receptor agonist so as to play roles of synergism and reduction of adverse drug reaction. The vilanterol trifluoromethanesulfonate, the fluticasone furoate and the aclidinium bromide are combined for use to prepare an inhalable compound preparation which can be taken once daily due to 24-hour acting. The vilanterol trifluoromethanesulfonate-containing pharmaceutical preparation can enhance the curative effect, solves the compliance problem of patients with coexisting chronic obstructive pulmonary disease and asthma, thus being appreciable in application prospects.

The invention relates to a preparation method of vilanterol and a salt thereof. The preparation method comprises the following steps: in a solvent, reacting a mixture containing a compound shown as aformula I with succinic acid to obtain a compound shown as a formula II-1; and subjecting the obtained compound shown as the formula II-1 to reacting and conversion to obtain vilanterol and the salt thereof. The preparation method of the vilanterol and the salt thereof has the advantages of higher yield, high purity, easiness in refining, simplicity and convenience in operation and suitability forindustrialization.

The invention discloses a method for synthesizing Vilanterol midbody 2-(2,2-dimethyl-4H-1,3-benzodiazepine-6-group)-2-carbonyl ethyl carbamate tert-butyl ester (II) by virtue of solid acid catalysis,which belongs to the technical field of organic catalysis. According to the method, the solid acid is used to catalyze the synthesis of Vilanterol midbody (II),so that the defect in the prior art by adopting organic strong acid can be solved, the recycling of the catalyst is realized, and the pressure of environmental protection can be alleviated. The solid acid catalyzed synthesis route of the invention is environment-friendly and meets the requirements of modern pollution-free industrialized production.

The invention discloses a method for synthesizing a vilanterol intermediate tert-butyl 2-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-carbonylethylcarbamate by catalysis with modified reduced graphene oxide with a high carboxylation edge, and belongs to the technical field of organic catalysis. The method utilizes an acidic catalytic reaction of the relatively large amount of carboxyl groups at the edge of reduced graphene oxide to overcome the disadvantage that an adopted organic strong acid is difficult to recover in the prior art, solve the problem of heterogeneous phase and difficult recyclingapplication of a catalyst, and reduce environmental protection pressure. The catalytic synthesis method adopting graphene is environmentally friendly, and meets requirements of modern green industrial production.

The invention discloses a method for detecting a genotoxic impurity containing bromohexyl in vilanterol triphenylacetate. The genotoxic impurity is selected from VL02imp4 of a structural formula I, VL02imp6 of a structural formula II and/or VL02imp8 of a structural formula III. The method is based on a gas chromatography-flame ionization detector, and the chromatographic conditions are as follows: 5% diphenyl-95% dimethyl polysiloxane is used as a capillary chromatographic column of a stationary liquid; the initial temperature is 35-45 DEG C, the temperature is increased to 315-325 DEG C at the speed of 13-18 DEG C/min, and the temperature is maintained The carrier gas is nitrogen, the flow velocity is 0.8-1.2 ml/min, the constant flow mode is adopted, and the split ratio is (8: 1)-(12: 1); the sample introduction temperature is 250 DEG C; the sample size is 1 microliter; the detection temperature is 315-325 DEG C, the flow rate of nitrogen is 25ml/min, the flow rate of hydrogen is 40ml/min, and the flow rate of air is 400ml/min.

The invention discloses a preparation method and application of a vilanterol EP impurity 2, and the preparation method comprises the following steps: dissolving a compound with a structure as shown in a formula I in a first organic solvent, adding acid and a dewatering agent, and reacting with 2, 2-dimethoxypropane under a heating condition to obtain a compound with a structure as shown in a formula II; dissolving the compound with the structure as shown in the formula II in a second organic solvent, adding N-t-butyloxycarboryl-glycine-N '-methoxyl-N'-methyl amide, adding n-butyllithium at low temperature, and reacting for 1 hour to obtain a compound with the structure as shown in the formula III, namely the vilanterol EP impurity 2. The method has the advantages of easily available raw materials, few steps, high yield and low cost, and fills the technical blank of preparation of the vilanterol EP impurity 2. A cheap and high-quality impurity reference substance can be provided for quality research of vilanterol, and the method has important significance on safe medication of vilanterol.

The invention discloses a synthesizing method of a vilanterol intermediate and belongs to the field of drug synthesis. According to the synthesizing method of the vilanterol intermediate, 4-hydroxymandelic acid serving as the raw material is prepared through electrophilic substitution reaction into 3-hydroxymethyl-4-hydroxymandelic acid. The prepared new vilanterol intermediate is simple in raw material acquisition and operation, and when applied to synthesizing vilanterol, can greatly shortens the synthetic route and reduce the production cost, thereby being applicable to industrial production.