Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of cortisone acetate

A technology of cortisone acetate and acid solution, applied in chemical instruments and methods, steroids, organic chemistry, etc., can solve the problems of containing large heavy metal ions, etc., and achieve the effects of low price, good process prospects, and mild reaction conditions

Active Publication Date: 2021-12-21
JIANGSU YUANDA XIANLE PHARMA
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new synthetic route of steroidal intermediate cortisone acetate, avoid the use of heavy metal raw materials, solve the problem of a large amount of heavy metal ions in the waste water from the source, and solve one of the above-mentioned prior art problems or more

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of cortisone acetate
  • A kind of preparation method of cortisone acetate
  • A kind of preparation method of cortisone acetate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Steroid intermediate A

[0041] Add 20 parts by volume of acetone to the dry first reaction tank, feed nitrogen, stir and add 1 part by mass of 17α-hydroxypregna-4,9-diene-3,20-dione acetate, stir After 15 minutes, cool down to 0-5°C, add 0.06 parts by volume of perchloric acid and 2 parts by volume of water, add 0.5 parts by mass of dibromohydantoin four times at 2-4°C, with an interval of 30 minutes each time, After the addition is completed, keep the temperature for 2 hours, and take a sample for detection and analysis by thin-layer chromatography until the raw materials are completely reacted;

[0042] After completion of the reaction, add dropwise a concentration of 10% sodium sulfite aqueous solution to the reaction solution to adjust the pH>7. For the distillate, add 2 parts by volume of water, and then steam until there is no acetone smell, that is, the concentration is complete;

[0043] Add 25 parts by volume of water, stir and cool down to 0-5°C, discha...

Embodiment 2

[0053] (1) Steroid intermediate A

[0054]Add 15 parts by volume of acetone to the dry first reaction tank, feed nitrogen, stir and add 0.8 parts by mass of 17α-hydroxypregna-4,9-diene-3,20-dione acetate, stir After 15 minutes, cool down to 0-5°C, add 0.04 parts by volume of perchloric acid and 1 part by volume of water, add 0.4 parts by mass of dibromohydantoin four times at 2-4°C, with an interval of 30 minutes each time, After the addition is completed, keep the temperature for 1 hour, and take a sample and analyze it by thin-layer chromatography until the raw material is completely reacted;

[0055] After completion of the reaction, add dropwise concentration of 10% sodium sulfite aqueous solution to the reaction solution to adjust pH>7. For the distillate, add 2 parts by volume of water, and then steam until there is no acetone smell, that is, the concentration is complete;

[0056] Add 20 parts by volume of water, stir and cool down to 0-5°C, discharge and centrifuge, ...

Embodiment 3

[0065] (1) Steroid intermediate A

[0066] Add 25 parts by volume of acetone to the dry first reaction tank, feed nitrogen, stir and add 1.2 parts by mass of 17α-hydroxypregna-4,9-diene-3,20-dione acetate, stir After 15 minutes, cool down to 0-5°C, add 0.08 parts by volume of perchloric acid and 3 parts by volume of water, add 0.6 parts by mass of dibromohydantoin four times at 2-4°C, with an interval of 30 minutes each time, After the addition is completed, keep the temperature for 3 hours, and take a sample and analyze it by thin-layer chromatography until the raw material is completely reacted;

[0067] After completion of the reaction, add dropwise concentration of 10% sodium sulfite aqueous solution to the reaction solution to adjust the pH>7. For the distillate, add 2 parts by volume of water, and then steam until there is no acetone smell, that is, the concentration is complete;

[0068] Add 30 parts by volume of water, stir and cool down to 0-5°C, discharge and centr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing cortisone acetate, which comprises the following steps: in a first reaction tank, adding a first solvent, a first acid solution, water and 17α-hydroxypregna-4,9-diene- 3,20‑diketone acetate, stir evenly; at a temperature of 2‑4°C, add the brominating agent four times, keep the temperature for 2 hours, and analyze by thin layer chromatography until the raw materials are completely reacted; adjust the pH with alkaline solution >7, then return to 6 with the second acid solution, concentrate under reduced pressure until the first solvent is completely concentrated, add water, cool the temperature to 5°C, centrifuge, wash, dry and dry to obtain the steroid intermediate acetic acid cortisone. The preparation method does not use oxidants and catalysts containing heavy metal ions, and the solvents used can be recycled and used mechanically. The waste water in the production process does not contain heavy metal ions, which belongs to an environment-friendly process. The yield and purity of the product are high, and it has a good process prospect. .

Description

technical field [0001] The invention relates to the technical field of medicines and intermediates thereof, in particular to a method for preparing an important steroid intermediate cortisone acetate, which can be used as a starting material for cortisone, prednisone, and prednisone Production of APIs of steroid hormones such as Nisolone and Methylprednisolone and related derivatives. Background technique [0002] Steroid hormones have strong anti-infection, anti-allergic, anti-viral and anti-shock pharmacological effects, and are important drugs for treating rheumatism, cardiovascular, lymphoid leukemia, cellular encephalitis, skin diseases, anti-tumor and rescuing critically ill patients. Structurally, it can be divided into androstane, estrone and pregnane. Among them, prednisolone has the third mother nucleus structure, so it belongs to the adrenal cortex hormone drugs with pregnane structure. [0003] Cortisone acetate is an important steroid compound, not only can be...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07J5/00C07J21/00
CPCC07J5/0053C07J21/006
Inventor 郭曦刘年金杜艳赵百合
Owner JIANGSU YUANDA XIANLE PHARMA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com