933443-26-6Relevant articles and documents
Production method of fosfomycin calcium bulk drug
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Paragraph 0024-0026; 0035-0037; 0046-0048; 0057-0059; 0068, (2021/09/04)
The invention discloses a production method of a fosfomycin calcium bulk drug. The method comprises the following steps: adding a resolution reagent phenylethylamine into a reaction solution of cis-propenylphosphonic acid to form a racemate, and then adding an oxidation reagent to form epoxy propenylphosphonic acid, wherein the generation of a racemic mixture through epoxidation of the cis-propenylphosphonic acid is the key step of the whole synthesis reaction, the addition of the catalyst can realize epoxidation of cis-propenylphosphonic acid at a low temperature, the ZSM-5 molecular sieve is added as a catalyst carrier so as to make the catalyst keep a good crystal structure, sodium tungstate and sodium molybdate are well dispersed in pore channels of the ZSM-5 molecular sieve so as to avid the influence of mixing of the catalyst and the product on the purity of the product effectively recover the catalyst and recycle the catalyst and achieve environment-friendly and economical characteristics, and the yield of the fosfomycin calcium raw material medicine prepared by the production method reaches 49.6-51.2%.