Method for treating prednisone acetate mother liquor

The invention relates to the technical field of chemical pharmacy, in particular to a method for treating prednisone acetate mother liquor. The method comprises the following steps: (1) adding a solvent and alkali liquor into the prednisone acetate mother liquor to carry out hydrolysis reaction; (2)...

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Bibliographische Detailangaben
Hauptverfasser: LI HEXING, JIN XIAOHUI, JI WEIZHONG, CHEN YUZHEN, ZHANG HAITAO, SONG ZHANGSHENG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to the technical field of chemical pharmacy, in particular to a method for treating prednisone acetate mother liquor. The method comprises the following steps: (1) adding a solvent and alkali liquor into the prednisone acetate mother liquor to carry out hydrolysis reaction; (2) after the hydrolysis reaction is finished, adjusting the reaction liquid to be neutral, concentrating under reduced pressure until a large amount of crystals are separated out, and performing suction filtration to obtain a hydrolysate crude product; (3) adding the hydrolysate crude product into a solvent, and refining to obtain a hydrolyzed refined product; (4) adding the hydrolyzed refined substance and a catalyst into a solvent, and reacting with acetic anhydride to obtain a mixture of prednisone acetate and cortisone acetate; and (5) fermenting and dehydrogenating the mixture to obtain the prednisone acetate. According to the treatment method, the prednisone acetate in the prednisone acetate mother liquor can b