55542-27-3Relevant academic research and scientific papers
A spironolacton intermediate testosterone for synthesizing method
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Paragraph 0032; 0033; 0034; 0035; 0036; 0037, (2017/05/12)
The invention relates to a synthesis method of a chemical medicine, and concretely relates to a synthesis method of a spironolactone intermediate testosterone lactone. The method is characterized in that a compound I 4-androstenedione (4AD) undergoes a two-step reaction of addition siloxane removal and oxidation cyclization to obtain the compound III testosterone lactone, and the reaction route is shown in the specification. Compared with traditional methods adopting a traditional raw material 16-dehydropregnenolone acetate with high price, the method provided by the invention adopting the cheap and easily available 4-androstenedione (4AD, I) as an initial raw material has extremely high production application and economic values under the affection of market supply and demand.
Having a method for the synthesis of intermediates spirondactone
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Paragraph 0033-0036, (2017/04/07)
The invention relates to a synthesis method of a chemical medicine, and concretely relates to a synthesis method of a spironolactone intermediate canrenone. The method comprises the following steps: carrying out an ethynylation reaction on a compound I 4-androstenedione (4AD), hydrogenating, carrying out an oxidation cyclization reaction, and carrying out a bromization and debromination reaction to obtain the compound V canrenone, and the above reaction route is shown in the specification. A synthesis method of the structure of an important 21,17-carboxy lactone spiro ring adopted in the invention is different from previous process modes, and is concise and efficient. The method has the characteristics of high yield, good selectivity, low cost, mild reactions, suitableness for industrialization, stability and easy realization.
