31981-44-9Relevant articles and documents
Nomegestrol intermediate synthesizing method
-
, (2017/07/19)
The invention provides a nomegestrol intermediate synthesizing method. The nomegestrol intermediate synthesizing method is characterized in that nomegestrol intermediate synthesis utilizes compound of 4-estrenochrysene-3,17-diketone as a beginning raw material; a nomegestrol intermediate crude product can be obtained through cyaniding, silyl etherification, intramolecular nucleophilic substitution reaction, reduction reaction and esterification reaction; then the nomegestrol intermediate can be obtained through methyl alcohol and ethyl acetate crystallization. The preparation method disclosed by the invention utilizes a short synthesizing line, the intermediate has stable performance, product yield is high, production cost is low, a production process is easy to control, environmental pollution is small, and industrial production is facilitated.