42 results about "Omarigliptin" patented technology

The invention provides a synthetic method for a formula (I) compound omarigliptin. A formula (2) compound and a formula (3) compound are taken as initial raw materials and are subjected to a series of reactions shown in the specification, so that the formula (1) compound omarigliptin is finally prepared. Compared with the prior art defects that omarigliptin synthetic steps are more and synthetic technology is complex, the synthetic method is simple and practicable, relatively low in cost, relatively high in yield, relatively good in product quality, and is suitable for large-batch industrialized production.

The invention provides an omarigliptin intermediate preparation method. The omarigliptin intermediate preparation method comprises the step of mixing a compound I with a catalyzing enzyme, and reacting to obtain an omarigliptin intermediate. The omarigliptin intermediate preparation method has the beneficial effects that the cost of raw materials is reduced; the problem in the prior art that isomer byproducts are generated during preparation of the omarigliptin intermediate and cannot be utilized is effectively solved; the yield and atom economy are increased; and the omarigliptin intermediate preparation method is simple in operation, mild in conditions, environment-friendly and suitable for industrial production.

The invention relates to a preparation method of an omarigliptin intermediate. The omarigliptin intermediate is tert-butyl [1-(2,5-difluorophenyl)-1-oxopent-4-yn-2-yl] carbamate. The method comprises the following steps: a compound I shown as the formula (III) is prepared from 1,4-difluorobenzene as a starting material; the compound I is subjected to a reaction with dibenzimide, and a compound II shown as the formula (IV) is obtained; the compound II is subjected to a substitution reaction with a propargyl compound, and a compound III shown as the formula (V) is prepared; the compound III is subjected to acidolysis and Boc protection, and the compound, namely, the omarigliptin intermediate, shown as the formula (II) is obtained. According to the preparation method, technical defects of long synthesis steps, quite expensive starting materials such as 2,5-difluorobenzaldehyde or 2-bromo-1,4-difluorobenzene, preparation of Weinreb amides, use of CDI (1,1'-Carbonyldiimidazole) and the like in the prior art are overcome; the preparation method has the advantages of simple operation, high yield, low cost and wide source of raw materials and the like, and is applicable to industrial production.

The invention discloses Omarigliptin and a preparation method of an intermediate of the Omarigliptin, and provides a preparation method of an Omarigliptin intermediate I. The preparation method comprises the following step: enabling a compound II and a compound III to undergo a condensation reaction in a polar aprotic organic solvent in the presence of lewis acid and sodium borohydride acetate to obtain the Omarigliptin intermediate I. The preparation method disclosed by the invention has the advantages of simple and safe operation, no need of special purification equipment, short reaction time, fewer by products, high yield and simple post treatment operation; column chromatography separating operation in a post treatment process is avoided; a prepared product is high in purity, the optical purity is greater than or equal to 99,9 percent, the purity of a related substance is greater than or equal to 98.5 percent, and the purities of all impurities are smaller than or equal to 0.5 percent separately; the preparation method is low in production cost and is suitable for industrial production. In addition, according to the Omarigliptin prepared from the Omarigliptin intermediate I obtained by adopting the preparation method disclosed by the invention, the purity is greater than or equal to 99.5 percent, the purities of all the impurities are smaller than or equal to 0.1 percent separately, and the standards of crude drugs are reached. (The formula is shown in the description).

The invention discloses a compound or pharmaceutically acceptable salt thereof shown as a formula I (the formula l is shown in the following description), wherein R1, R2 and R3 are each independentlyselected from H or OCH3. In an in-vitro DDP-4 enzyme inhibition test, IC50 values of listed compounds to DDP-4 are all smaller than omarigliptin and Sitagliptin. The test shows that the compound provided by the invention has better DDP-4 inhibition activity and can be used for deeper study as a drug for treating and/or preventing non-insulin-dependent diabetes mellitus, hyperglycemia or insulin resistance.

The invention relates to an alogliptin composition and belongs to the technical field of pharmacy. The technical scheme of the present invention is: in the alogliptin composition of unit dosage, contain the alogliptin 12.5-25 mg that passes 100 mesh sieves, the chitosan 12-20mg that molecular weight is 1.8-20,000, calcium hydrogen phosphate 16‑32mg, corn starch 16‑30mg, microcrystalline cellulose 20‑36mg, lactose 20‑40mg, croscarmellose sodium 8‑15mg, sodium lauryl sulfate 1.2‑1.6mg, magnesium stearate 0.8-1.5 mg. The invention provides an alogliptin tablet composition with stable quality.

The invention provides a synthesizing method of an omarigliptin compound shown in a formula (1). The synthesizing method comprises the following steps: by using a compound shown in a formula (2) as an initial raw material, performing a series of following reaction, so as to finally obtain the compound shown in the formula (1), namely omarigliptin, wherein reaction formulae are shown in the description. Compared with the prior art with multiple synthesizing steps and complicated synthesizing technology for synthesizing the omarigliptin, the synthesizing method has the advantages that the method is simple, the implementing is easy, the cost is lower, the yield rate is higher, the product quality is higher, and the synthesizing method is suitable for large-scale industrialized production.

The invention discloses a novel synthesis method for preparing a chiral intermediate of omarigliptin. The method disclosed by the invention comprises the following steps: taking crotonyl chloride and (S)-4-benzyl-2-oxazolidone as starting raw materials and carrying out amidation, alder condensation, hydrolysis, Curtius rearrangement, Boc addition and ring opening to obtain the chiral intermediate (VI). The preparation method disclosed by the invention has the advantages of relatively short route, relatively low cost, easiness for obtaining the raw materials and relatively high yield so that the preparation method is suitable for industrial production. A formula is shown in the description.

The invention provides a new method for preparing an omarigliptin key intermediate. The method comprises the following steps that 2,5-difluorobenzaldehyde is used as a raw material, and through a 7-step reaction, the omarigliptin key intermediate is obtained. According to the method for preparing the omarigliptin key intermediate disclosed by the invention, a new synthesis route for preparing theomarigliptin key intermediate is provided, the cost of raw materials and the cost of reagents are reduced, the yield of the omarigliptin intermediate is increased, the reaction operation is simple, the condition is mild, and the method is environmentally friendly and suitable for industrial production.

The invention provides a preparation method of a DP-IV inhibitor omarigliptin intermediate. The preparation method includes the step that a raw material A which is 2-(2,5-difluorophenyl)-(2-oxoethyl)carbamate reacts with a raw material B which is alkyl propargyl sulfonate, so that a product C which is 1-(2,5- difluorophenyl)-1-oxopent-4-yne-2-yl carbamate is obtained. The preparation method is new, the specific omarigliptin intermediate is selected as a problem-solving direction, an efficient technology is provided, and the yield of a one-step reaction is up to 96%.

The invention provides an efficient and simple preparation method for omarigliptin midbody pyrrole and [3,4-c] pyrazol-5(2H,4H,6H)-carboxylic acid tert-butyl ester, wherein the total recovery ratio is close to 50%. The preparation method is easy to operate, the recovery ratio is higher, three produced wastes are less, and the method is suitable for industrialized production.

The invention relates to a method for refining alogliptin, which belongs to the technical field of preparation of raw materials. The technical scheme of the present invention is: dissolve the crude product of alogliptin in hexamethylphosphoramide; add a certain amount of activated carbon, stir, and filter; The mixed solution of base phosphoramide-acetone, white solid is separated out, continue stirring for 5-8 hours; Filter, filter cake is beaten with isopropanol of the same volume as the first step, stir for 1 hour; Filter, filter cake is with isopropanol After washing, the filter cake was spread out and dried under vacuum at 25°C. The invention provides a method for refining alogliptin. The method of the invention is simple, easy to operate and suitable for industrial production.

The invention discloses a method for preparing omarigliptin and a method for preparing an intermediate. In the method for preparing the key intermediate compound 4 of the omarigliptin, a weak acid with the pKa value of 3.5-5 is added, so that the generation of byproducts is effectively inhibited, the yield of the intermediate compound 4 is very high, and finally, the yield of the omarigliptin is greatly improved.

The invention discloses an indole derivative represented by a formula I (as shown in the description) or a pharmaceutically acceptable salt of indole derivative, wherein R1, R2, R3 and R4 are respectively selected from H or CH3. The inhibition activity of a compound listed in an in-vitro DPP-4 enzyme inhibition test to DPP-4 is between the inhibition activities of Sitagliptin and omarigliptin. Theindole derivative represented by the formula I is a novel-structure DPP-4 inhibitor, the features of the indole derivative in pharmacology toxicology and pharmacokinetics are worthy of being relatively deeply researched, and a drug for treating and/or preventing non-insulin-dependent diabetes mellitus, hyperglycemia or insulin resistance can be obtained.