Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

56 results about "Phenylpiperidine" patented technology

Phenylpiperidine is a chemical compound with a phenyl moiety directly attached to piperidine. There are a variety of pharmacological effects associated with phenylpiperidines including morphine-like activity or other central nervous system effects.

Synthesis method for (R)-3-phenylpiperidine or/and (S)-3-phenylpiperidine and synthesis method for chiral intermediate of niraparib

The invention belongs to the technical field of organic synthesis. The synthesis method firstly provided by the invention takes benzyl-4-oxopiperidine as a starting material, and the starting materialis subjected to Grignard reaction, elimination reaction, hydrogenation reduction reaction and chiral resolution in sequence to successfully obtain a target product (R)-3-phenylpiperidine or/ and (S)-3-phenylpiperidine. The synthesis method sencondly provided by the invention takes the same starting raw material for Grignard reaction, organic silicon reagent is used for removing a hydroxide radical, and benzyl is removed by catalytic hydrogenation reaction; finally, the chiral resolution is carried out to obtain a target product. The (S)-3-phenylpiperidine can be synthesized according to the synthesis method. (S)-3-p-aminosalicylic phenylpiperidine can be synthesized according to the third aspect; or according to the fourth aspect, (S)-3-p-bromophenyl piperidine is synthesized to serve asthe key intermediate for preparing the niraparib. According to the synthesis method for (R)-3-phenylpiperidine or/ and (S)-3-phenylpiperidine and the synthesis method for chiral intermediate of niraparib, production cost is obviously lowered, and the synthesis methods are favorable for the large-scale industrial production of a niraparib medicine.
Owner:SHANGHAI BIOBOND PHARMA

Preparation method of ALK inhibitor Brigatinib

The invention relates to the technical field of medicines, and relates to a preparation method of a medicine ALK inhibitor AP26113. The method comprises the following steps: (1) carrying out substitution reaction of aromatic amine on 2,4,5-trichloropyrimidine and 2-(dimethyloxyphosphate)aniline under the action of an acid applying agent to obtain an intermediate 1 (2,5-dichloro-N-(2-(dimethylphosphine)phenyl)pyrimidine-4-amine), and pulping the intermediate; (2) carrying out aromatic amine substitution reaction on 2-nitro-5-fluoroanisole and 1-methyl-4-(4-piperidyl)-piperazine under the actionof an acid applying agent to obtain a compound 1-(1-(3-methoxy-4-nitrophenyl)piperidin-4-yl)4-methylpiperazine, dissolving the compound with an organic solvent, and extracting the compound with an acidic solvent; (3) carrying out palladium-carbon catalytic hydrogenation on the product obtained in the step (2) to obtain an intermediate 2 (2-methoxy-4-[4-(4-methyl-1-piperazinyl)-1-piperazinyl]-aniline); (4) carrying out amine substitution reaction on the intermediate 1 and the intermediate 2 under an acidic catalytic condition to obtain a crude product of Brigatinib. The yield of the Brigatinibreaches 50% or above, and the purity of the Brigatinib reaches 99.9% or above.
Owner:SHENYANG PHARMA UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products