113 results about "Cinacalcet" patented technology

Provided is a process for preparing Cinacalcet, (R)-α-methyl-N-[3-[3-(trifluoromethyl)phenyl]propyl]-1-naphthalenemethane amine and intermediates thereof.

Disclosed is a safe and non-toxic prophylactic or therapeutic composition for diabetes or obesity. The prophylactic or therapeutic composition for diabetes or obesity comprises as an active ingredient, a calcium receptor activator such as γ-Glu-X-Gly, wherein X represents an amino acid or an amino acid derivative; γ-Glu-Val-Y, wherein Y represents an amino acid or an amino acid derivative; γ-Glu-Ala; γ-Glu-Gly; γ-Glu-Cys; γ-Glu-Met; γ-Glu-Thr; γ-Glu-Val; γ-Glu-Orn; Asp-Gly; Cys-Gly; Cys-Met; Glu-Cys; Gly-Cys; Leu-Asp; γ-Glu-Met(O); γ-Glu-γ-Glu-Val; γ-Glu-Val-NH₂; γ-Glu-Val-ol; γ-Glu-Ser; γ-Glu-Tau; γ-Glu-Cys(S-Me)(O); γ-Glu-Leu; γ-Glu-Ile; γ-Glu-t-Leu; γ-Glu-Cys(S-Me); cinacalcet; a cinacalcet analogue compound and protamine.

The invention explores a method for synthesizing and refining cinacalcet hydrochlorid, especially avoids toxic and expensive reaction reagents reported in literatures; the invention has the advantages of convenient sources of raw materials and reagents, low cost, little pollution to environment and simple operation, the invention is suitable for industrial production.

An immunostimulating agent, which can stimulate immunity effectively, is described. The immunostimulating agent contains an active ingredient including a calcium receptor activator such as γ-Glu-X-Gly [wherein X represents an amino acid or a derivative thereof other than Cys], γ-Glu-Val-Y [wherein Y represents an amino acid or a derivative thereof], γ-Glu-Ala, γ-Glu-Gly, γ-Glu-Met, γ-Glu-Thr, γ-Glu-Val, γ-Glu-Orn, Asp-Gly, Cys-Gly, Cys-Met, Glu-Cys, Gly-Cys, Leu-Asp, γ-Glu-Met(O), γ-Glu-γ-Glu-Val, γ-Glu-Val-NH2, γ-Glu-Val-ol, γ-Glu-Ser, γ-Glu-Tau, γ-Glu-Cys(S-Me)(O), γ-Glu-Leu, γ-Glu-Ile, γ-Glu-t-Leu, γ-Glu-Cys(S-Me), a cation having a valency of 2 or more, protamine, polylysine, spermine, spermidine, putrescine, cinacalcet, a cinacalcet analogue compound, and a salt of any one of the aforementioned components.

The invention discloses an oral solid rapid release preparation of cinacalcet hydrochloride. The oral solid rapid release preparation comprises cinacalcet hydrochloride and medicinal auxiliary materials, wherein the average particle diameter of cinacalcet hydrochloride is 5-15 mum; the cinacalcet hydrochloride is needlelike crystalized fine particles; the medicinal auxiliary materials include a filling agent, a bonding agent, a disintegrating agent and a lubricating agent; and the preparation is in the form of a tablet. The oral solid rapid release preparation has the beneficial effects that: the average particle diameter of cinacalcet hydrochloride is defined, so that the dissolution rate and dissolution amount of cinacalcet are increased, a preparation process is simple and safe, the quality is controllable, and cost is low; and the oral solid rapid release preparation is suitable for industrial production.

The invention provides a novel process for the preparation of a compound of formula (I)

The invention discloses an environment-friendly synthesis method for cinacalcet. The cinacalcet is prepared by reacting R(+)-1-naphthyl ethamine and [3-(3'-trifluoromethyl)phenyl]-1-halopropane or [3-(3'-trifluoromethyl)phenyl]-1-propylsulfonate serving as raw materials with water serving as medium under the action of a phase-transfer catalyst. The process has the advantages of reducing the cost, along with high yield, no any organic solvent during the reaction, and low environmental pollution, and thus is a synthesis method suitable for industrialization.

The invention provides a cinacalcet hydrochloride preparation method which comprises the following steps: (A) by taking trifluoromethylcinnamic acid as a raw material and palladium on carbon as a catalyst, performing hydrogenation reduction to obtain m-trifluoromethylbenzoic acid; (B) performing condensation reaction on the m-trifluoromethylbenzoic acid and R-(1) naphthylethylamine, thus obtaining (R)-N-(1-(naphthalen-1-yl)ethyl)-3-(trifluoromethyl)phenyl)propanamide; (C) performing catalytic reduction on the (R)-N-(1-(naphthalen-1-yl)ethyl)-3-(trifluoromethyl)phenyl)propanamide to obtain cinacalcet; and (D) reacting the cinacalcet and hydrochloric acid to obtain cinacalcet hydrochloride. The method has the advantages of thorough reaction, high yield, no pollution in the reaction process and the like.

Processes for preparing cinacalcet are provided.

The invention relates to the field of drug synthesis, in particular to a method for preparing a cinacalcet intermediate R-(+)-1-(1-naphthyl)ethamine. The method is characterized in that D-tartaric acid which is low in price and easy to obtain is selected to replace D-(+)-naproxen to serve as a resolving agent, e.e. of an obtained product is up to 99.9%, and the method has the advantages of low cost, environmental friendliness and the like.

Provided is a process for preparing cinacalcet, (R)-α-methyl-N-[3-[3-(trifluoromethyl)phenyl]propyl]-1-naphthalenemethane amine.

The invention relates to a preparation method of a cinacalcet intermediate (Z)-3-chlorine-3-[3-(trifluoromethyl)phenyl]-2-crylic acid. The preparation method comprises the following steps: condensing 3-(trifluoromethyl) acetophenone used as a starting material; reducing and performing other reactions to obtain the intermediate. The invention also relates to two methods for preparing cinacalcet by utilizing intermediate.

The present invention provides crystalline forms of Cinacalcet Fumarate and Cinacalcet Succinate, pharmaceutical compositions comprising the crystalline form of Cinacalcet Fumarate and/or the crystalline form of Cinacalcet Succinate, and processes for preparing the crystalline forms of Cinacalcet Fumarate and Cinacalcet Succinate and pharmaceutical compositions comprising the crystalline forms.

The resent invention rovides a novel rocess for re arin cinacalcet of formula I and pharmaceutically acceptable salts thereof and process of purification. The present invention also provides novel nitrogen protected synthetic intermediates useful in the process of the present invention. Further, the present invention provides a novel substituted carbamate impurity and process of preparation thereof.

Methods of preparing cinacalcet, cinacalcet derivatives, and salts thereof is disclosed herein. Also disclosed herein are polymorphs of cinacalcet, compositions of cinacalcet, and methods of treating a subject by administering cinacalcet, wherein cinacalcet is prepared by the disclosed methods.

The invention discloses a synthesis method of cinacalcet. The synthetic route is divided into two parts, namely, (1) preparing a chiral compound as shown in the description from racemic 1-naphthylethylamine as a starting material by virtue of a dynamic kinetic reliquid method in the presence of Pd/LDH-SA serving as a racemic catalyst, p-chlorophenol fatty acyl ester serving as an acyl donor and lipase serving as a biological reliquid catalyst; and (2) reacting m-trifluoromethylbenzaldehyde serving as a starting material and a cheap and easily available material acetaldehyde to obtain m-trifluoromethyl cinnamic aldehyde and carrying out reduced pressure distillation to obtain a pure product; reacting m-trifluoromethyl cinnamic aldehyde and the compound as shown in the description to produce an imine intermediate; dissolving the imine intermediate in ethanol and reacting in the presence of Raney nickel serving as a hydrogenation catalyst to obtain the product cinacalcet. By the synthesis method, the reaction yield and the optical purity of the product are increased, the reaction conditions are milder and the raw materials are easily available.

The invention provides a method for synthesizing cinacalcet. According to the method, (R)-1-(1-naphthyl)ethylamine and 3-(3-trifluoromethylphenyl)propionic acid are adopted as raw materials; a nonmetal boron compound is adopted as a catalyst; an organosilane compound is adopted as a reducing agent; and a target product is synthesized with one step through a reductive coupling process. The method provided by the invention is simple and is easy to operate; and the raw materials are easy to obtain, such that cost is low. Also, no metal catalyst is needed in the synthesis process, such that metal residue in the drug is avoided, and the method is safe and environment-friendly. The method meets the requirements of green chemistry.

The invention provides a preparation method of cinacalcet, which comprises the following steps of: 1) mixing an alkali metal hydroboron, Lewis acid and a solvent (1); 2) mixing a compound shown in the formula (3) and a solvent (2), adding the mixture into a reaction product of the step 1), and partially steaming out the mixture until the internal temperature of the reaction liquid is 90-110 DEG C for reaction; and 3) collecting a compound shown in the formula (4) from the reaction product to obtain the target product: N-[1-(R)-(1-naphthyl ethyl)-N-[3-[3-(trifluoromethyl)phenyl]propyl]amine. Without a reagent with fairly great toxicity in the original document and through process improvement, the method provided by the invention has the advantages of low preparation cost, simplicity in operation and high yield, is suitable for industrial production and has substantial positive effects and application values. The reaction formula is shown in the specification.

The invention discloses a method for preparing cinacalcet hydrochloride and belongs to the field of synthesis and preparation of chemical drugs. The method disclosed by the invention comprises the following steps: taking bromo-alpha,alpha,alpha-trifluorotoluene (II) and acryloyl chloride (III) as raw materials, and preparing m-trifluoromethyl acrylketone (IV) through a coupled reaction; carrying out an addition reaction between (IV) and (R)-1-(1-naphthyl) ethamine (V) so as to generate (R)-3-(1-(1-naphthyl)ethylamino)-1-(3-trifluoromethyl)phenyl)-1-acetone (VI); reducing (VI) to prepare N-((1R)-1-(1-naphthyl)ethyl)-3-(3-trifluoromethyl)phenyl)-1-propylamine (cinacalcet) (VII); carrying out a salt forming reaction on cinacalcet, thereby obtaining N-((1R)-1-(1-naphthyl)ethyl)-3-(3-trifluoromethyl)phenyl)-1-propylamine hydrochloride, namely the cinacalcet hydrochloride (I). According to the route, the cheap and readily available bromo-alpha,alpha,alpha-trifluorotoluene (II) and acryloyl chloride (III) are taken as the raw materials, a few steps are needed, usage of compounds of a heavy metal Pd and metal reducing agents LiAlH4, NaBH4 and the like is avoided, and the method is safe, environmentally friendly and economic and is suitable for large-scale industrial production.

The invention relates to a process for preparing N-[(1R)-1-(1-naphthyl)ethyl]-3-[3-(trifluoromethyl)-phenyl]propan-1-amine of formula hydrochloride salt of formula (I); i.e. Cinacalcet.HC1 and its intermediate of formula (IX).