49 results about "Ubenimex" patented technology

The invention belongs to the field of antineoplastic agent preparation and provides a preparation method for ubenimex. The preparation method comprises the following steps of: preparing high-purity key intermediate (2S,3R)-3-amino-2-hydroxy-4-phenyl butyric acid by taking L-lysine, L-arginine or L-histidine as a resolving reagent; and preserving the chirality of C-5 in forming a peptide chain by taking EDCI / HOAt as a condensing agent. Due to the adoption of the method, the problem that the (2S,3R)-3-amino-2-hydroxy-4-phenyl butyric acid and the (2S,3R)-3-acetamino-2-hydroxy-4-phenyl butyric acid cannot be completely separated by the conventional resolving agent and the racemization problem in the condensation of amide are effectively solved; and the purity of the ubenimex prepared by the method can reach over 99.5 percent.

The invention relates to ubenimex disket and its process, a composition disket comprising such as active ubenimex, disintegrating agent, filler, suspending agent bond, glidant, corrigent. Said ubennimex disket is convenient for medication, suitable for the old and small children and patient with swallowing difficulties.

The invention discloses a ubenimex fat emulsion injection, comprising ubenimex, oil for injection, emulsifier, stabilizer, isoosmotic adjusting agent and water, wherein, the concentration of the ubenimex is 0.05-10g / ml, the concentration of the oil for injection is 5-30g / ml, the concentration of the emulsifier is 0.8-3.0g / ml, the concentration of the stabilizer is 0.1-2.0g / ml, and the concentration of the isoosmotic adjusting agent is 2-3g / ml. Through measuring, the quality and the appearance of the fat emulsion injection of the invention are uniform, the average particle diameter is about 300nm, and the pH value is 5.0-9.0, thus, the fat emulsion injection can be used for injection. The ubenimex fat emulsion injection has obvious anti-tumor function. According to the characteristics of common fat emulsion injection, the ubenimex fat emulsion injection as an anti-tumor medicine also has the functions of slow releasing, targeting, providing organisms with energy and the like.

The invention belongs to the technical field of medicines and in particular relates to a method for recrystallizing ubenimex. By adopting the method for recrystallizing ubenimex, the phenomenon that materials can be instantly caked in the existing ubenimex crude product recrystallization process is avoided, hydraulic acid and ammonia water are greatly saved, and the total yield is increased by about 7-8 percent points.

The invention provides an ubenimex hydrochloride crystal-form compound. The ubenimex hydrochloride crystal-form compound has good dissolvability and stability. The invention also provides a preparation method of the ubenimex hydrochloride crystal-form compound and a pharmaceutical composition containing the ubenimex hydrochloride crystal-form compound. The ubenimex hydrochloride crystal-form compound can be processed to form any dosage forms such as tablets, capsules, an injection, pills, particles and drop pills. The invention also provides a use of the ubenimex hydrochloride crystal-form compound in preparation of drugs for treating cancers.

The present invention discloses one kind of coated Ubenimex tablet, which consists of Ubenimex 10-30 weight portions, disintegrant 3-20 weight portions, diluent 50-300 weight portions, lubricant 1-5 weight portions and water soluble coating material 2-20 weight portions. Compared with marketable Ubenimex capsule, the coated Ubenimex tablet has the same dissolution and bioavailability, but simple preparation process and low production cost.

The invention belongs to the field of medicine preparation and provides a completely novel method for synthesizing Ubenimex. The method comprises the steps of firstly, protecting amino of a starting raw material, i.e., (2S,3R)-3-amino-2-hydroxyl-4-phenylbutyric acid (AHPA for short) by using di-tert-butyl dicarbonate so as to form a Boc protective product, then, carrying out condensation with L-leucine tert-butyl ester, and finally, removing the protective group in an organic solution of hydrogen chloride, thereby obtaining Ubenimex. According to the method, reagents used by the adopted synthesis route are all commonly-used reagents, produced industrially and low in cost; reaction solvents are all ordinary solvents, are low in toxicity and little in environmental pollution; and each reaction step is mild in conditions and simple and convenient in operation and does not need special equipment, so that the method is suitable for carrying out industrial production. The purity of the prepared product reaches 99.5% or more.

The present invention provides a method for preparing an ubenimex intermediate (2S,3R)-3-acetamido-2-hydroxyl-4-phenylbutyric acid by using an organic alkali as a resolving agent, wherein the organic alkali is selected from S-1-naphthalene ethylamine, (S)-1-(2-naphthyl)ethylamine, L-phenylglycinol, and L-phenylalaninol. According to the present invention, the preparation method has advantages of good ubenimex intermediate purity, high yield, simple operation and good reproducibility, and is suitable for industrial production.

The invention discloses a novel synthesis process of ubenimex. The synthesis process comprises the following steps: enabling a raw material, namely (2S,3R)-3-amino-2-hydroxy-4-phenyl butyric acid, to react with di-tert-butyl dicarbonate ester so as to prepare an intermediate I, wherein di-tert-butyl dicarbonate ester is added in multiple batches; reacting the intermediate I with L-leucine tert-butyl ester hydrochloride so as to obtain an intermediate II, wherein L-leucine tert-butyl ester hydrochloride is preferred and is conducive to the improvement of yield and purity of the intermediate II; and respectively removing protecting groups, namely tert-butyloxy carbonyl and tert-butyl ester, of the intermediate II in an acid-base system, wherein through the operation, the protecting groups are effectively removed by regulating pH value by virtue of the acid-base system, so that the yield and purity of the finished ubenimex are improved.

The invention belongs to the field of medicinal chemical preparation, and particularly relates to a preparation method of high-purity Ubenimex. The method includes the following steps of adding a Ubenimex crude product to a mixed solution of water and other organic solvent to be heated, stirred and dissolved, after dissolving, conducting cooling, crystallizing and suction filtration, and conducting vacuum drying on obtained filter cakes to obtain the final Ubenimex product. By controlling parameters of the preparation method, the yield and purity of Ubenimex can be remarkably improved, product purity is high, and product quality is better ensured.

The invention provides a preparation method of ubenimex. The preparation method comprises that L-leucine benzyl ester p-toluenesulfonate and HOBt undergo a condensation reaction to produce an activated ester solution, (2S, 3R)-3-benzyloxyformamido-2-hydroxy-4- phenylbutyric acid and a weak acid strong alkali inorganic salt are mixed, the activated ester solution is added into the mixture drop by drop and undergoes a reaction to produce N-[(2S, 3R)-3-benzoylformamido-2-hydroxy-4-phenylbutyryl]-L-leucine, and N-[(2S, 3R)-3-benzoylformamido-2-hydroxy-4-phenylbutyryl]-L-leucine is reduced into ubenimex through hydrogen gas. The preparation method utilizes ethyl acetate as an organic solvent, saves tetrahydrofuran-caused potential safety hazard, utilizes the weak acid strong alkali inorganic salt as a base catalyst, saves a cost, is free of an organic solvent and is easy to operate.

The orally disintegrated Ubenimex tablet consists of Ubenimex as active component and supplementary material including disintegrating agent, soluble diluent, adhesive and lubricant. The disintegrating agent is mixture of 2 or 3 of low substituted hydroxypropyl cellulose, cross-linked carboxymethyl cellulose, cross-linked sodium carboxymethyl starch, cross-linked polyvidon and microcrystalline cellulose. The preparation process is the combination of wet pelletizing and direct tabletting. The orally disintegrated Ubenimex tablet has fast disintegration, administration convenience, fast absorption, high bioavailability, and less irritation to gastrointestinal tract.

The present invention relates to the design, synthesis, and biological study of multi-targeted Ubenimex pro-drug derivative. More particularly, provided in the present invention is a compound as shown by general structural formula (I) (wherein the definition of R is shown in the description). The derivative is a multi-targeted compound obtained by binding an aminopeptidase (APN / CD13) inhibitor, Ubenimex, with some anti-tumor drugs already on the market through an ester bond or amide bond, and is suitable for use as an anti-tumor drug for the treating various malignant tumors, and is especially suitable for treating various solid tumors.

The present invention utilizes ultramicropulverization and dripping pill preparation production process to make ubenimex dripping pills, and can attain the goal of raising disintegration and dissolution speed, quickly obtaining therapeutic effect, raising stability of medicine, reducing dose of auxiliary material, reducing production cost and convenient administration. Said pill not only can be sucked, and can be swallowed, and its compliance property is good.

The invention provides a medicament which can enhance immune function. The invention overcomes the shortcomings of the prior dripping pills that pure natural degrees of findings which are used by the prior dripping pills are not high, and chemosynthesis findings which are commonly used are not in food additives catalogs of some countries, and tastes of the dripping pills are worse. The invention is a pharmaceutical preparation whose natural degree is higher, safety is stronger, and side effect is lower.

The invention provides a crystal form of an ubenimex intermediate N-[(2S, 3R)-4-phenyl-3-benzyl-3-formylaminobenzoxy-2-hydroxybutyryl]-L-benzyl leucine. The ubenimex intermediate with the crystal form has high purity and good stability and is suitable for further preparing high-purity ubenimex active pharmaceutical ingredients. The invention also provides a preparation method of the crystal form, wherein according to the method, recrystallization is used for preparation; through HPLC (High Performance Liquid Chromatography), the purity of the obtained crystal is over 98.5%; and moreover, the adopted organic solvent is a common solvent with low price, a single-solvent recrystallization is more convenient for recovery, and the method is suitable for industrial production.

The invention relates to a preparation method for a ubenimex gamma crystal form. Through controlling key parameters in the preparation method, the preparation method provided by the invention is capable of obviously increasing the yield of the gamma crystal form and acquiring a single crystal form, has high technological repeatability, is capable of achieving controllable industrial production conditions and is beneficial to large-scale industrialization.

The invention provides an impurity in a ubenimex crude drug. Identification of a structure of the impurity benefits quality control of ubenimex so that the high-quality ubenimex crude drug can be obtained. The invention furthermore provides a production method of the impurity; and a product obtained through the method is high in purity, and can be used as an impurity reference substance of a ubenimex crude drug quality studying process.

The invention discloses an ubenimex recrystallization device and a method thereof. The recrystallization device comprises a reaction kettle and a driving motor, and the driving motor is connected witha bevel gear transmission mechanism arranged in the reaction kettle through a main stirring shaft; the bevel gear transmission mechanism is composed of a main planet gear, at least one side planet gear and an auxiliary planet gear which are arranged from bottom to top, the side planet gear is connected with the main planet gear and the auxiliary planet gear respectively, and the main planet gearis connected with the main stirring shaft through a shaft; the auxiliary planetary gear is connected with the top end of the reaction kettle through a vertically-arranged auxiliary connecting shaft; and the side planetary gear is connected with the side wall of the reaction kettle through a horizontally-arranged side connecting shaft. According to the ubenimex recrystallization device, six-direction stirring can be achieved, the effect of dispersing gel is achieved, dead corners are greatly reduced, the problem that in the prior art, caking is likely to happen is solved, the production processis easier to control, and the quality is more stable; the product purity is improved, and the yield is also increased.

The invention discloses a novel ubenimex recrystallization method. According to the method, PH is controlled in a manner of bidirectionally, simultaneously and dropwise adding an ubenimex acid solution and an alkali solution, and a PH buffer solution is used as a dispersion system, so that PH control is more accurate, the problem that agglomerates are easy to produce in the prior art is solved, the production process is easy to control, the quality is stable, the yield is also increased, the usage quantity of an ammonia solution and the usage quantity of hydrochloric acid are reduced, the cost is reduced, besides, the generation of three wastes is also reduced, the total yield is increased, and besides, the novel ubenimex recrystallization method is environmentally-friendly.

The invention provides a compound preparation having an anti-tumor action. The compound preparation comprises therapeutically effective amounts of ingredient A, ingredient B, ingredient C and a pharmaceutically acceptable carrier; or mixture of the ingredient A, the ingredient B and the ingredient C; or a capsule taking the mixture of the ingredient B and the ingredient C as restricted substances; the ingredient A is enteric coating particles of dipyridamole and is formed by dipyridamole enteric particles and coating layers for packing the dipyridamole enteric particles; the ingredient B is ubenimex adhesion particles taking insoluble cellulose and biological adhesive materials as carriers; and the ingredient C is dexamethasone with a particle size of 100-200 nm. The compound preparation having the anti-tumor action formed by the three compositions can reach the peak value in blood at a higher speed, and can remain longer effective concentration time respectively, so that the requirement of clinical application can be met.

The invention relates to the field of medicinal chemistry, and discloses a solid dosage form containing a prodrug derivative of ubenimex and a preparation method thereof. The solid dosage form contains pharmaceutically active components, fillers, disintegrants and lubricants, based on the total weight of the solid dosage form, the content of the pharmaceutically active components is 20-80% by weight, the content of the filler The content of the disintegrant is 10-70% by weight, the content of the disintegrant is 0.5-5% by weight, and the content of the lubricant is 0.5-5% by weight, wherein the active ingredient of the drug is the precursor of Ubenimex Drug derivatives or their optical isomers, diastereoisomers, racemic mixtures and pharmaceutically acceptable salts thereof. The solid dosage form of the invention can prolong the residence time of the drug in the body, improve the pharmacokinetic properties of the drug, and increase the bioavailability of the drug, so as to achieve better anti-tumor effect.

The invention provides an impurity generated in the preparation process of ubenimex bulk drug, and also provides a preparation method of the impurity. The purity of the impurity prepared by the methodreaches 99%, and the impurity can be used as a reference substance for the quality control process of the ubenimex bulk drug and preparation products of the ubenimex bulk drug.