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34 results about "Danazol" patented technology

This medication is used in women to treat pelvic pain and infertility due to a certain uterus disorder (endometriosis) and also to treat breast pain/tenderness/nodules due to a certain breast condition (fibrocystic breast disease). It is also used in both men and women to prevent swelling of the abdomen/arms/legs/face/airway due to a certain congenital disease (hereditary angioedema).

Preparation method of danazol

The invention discloses preparation methods of danazol and an intermediate thereof. The preparation method of danazol is prepared by the steps of taking androstenedione as a starting raw material, and carrying out 3-site enol etherification, 17-site carbonyl ethinylation, 3-site hydrolysis, 2-site methylidynel hydroxylation and oximation to obtain danazol. The 3-site enol etherification comprises firstly carrying out a reaction of androstenedione and triethyl orthoformate for 4-10 h in the presence of absolute ethyl alcohol and p-toluenesulfonic acid and at the temperature of 30-50 DEG C, then adding triethylamine at the temperature of 0-10 DEG C, and continuing to carry out a reaction for 0.2-1 h; the 17-site carbonyl ethinylation comprises firstly carrying out a reaction of a potassium hydroxide powder for 1-2 h in an acetylene airflow and at the temperature of 5-10 DEG C, and then carrying out a reaction with the 3-site enol etherified product for 2-4 h in the presence of tetrahydrofuran and a catalyst, at the temperature of 15-30 DEG C and in the acetylene airflow. The 3-site enol etherification is mild in reaction conditions and relatively high in yield, and the 17-site carbonyl ethynylation is relatively high in reaction yield and relatively short in time.
Owner:佳尔科生物科技南通有限公司

Preparation method of danazol

The invention provides a preparation method of danazol. According to the preparation method of the danazol, androstenedione is used as an initial raw material, through 2-position secondary hydroxymethylation reaction, 17-position carbonyl ethinylation reaction and oximation reaction, the danazol can be prepared, and the 2-position secondary hydroxymethylation reaction and the 17-position carbonylethinylation reaction are completed in one step. The preparation method of the danazol has the advantages of being safe, short in reaction step, high in yield, efficient in reaction and the like, andin the reaction, no flammable and combustible acetylene gas with huge potential safety hazards is used, so that preparation in which potassiumacetylide is replaced by ethynylmagnesium bromide is safer. Meanwhile, the reaction which needs to be completed in four steps before is completed in one step, the reaction is more efficient, meanwhile, operation is simple, and reaction time is short.
Owner:JIANGSU LIANHUAN PHARMA

Pharmaceutical polyacrylonitrile fiber for preventing and curing mammary gland hyperplasia, preparation and application thereof

The invention relates to a medicinal polyacrylonitrile fiber for preventing hyperplasia of mammary glands, its manufacturing method and application. A medicinal polyacrylonitrile fiber for preventing hyperplasia of mammary glands, wherein the proportion of polyacrylonitrile to A in the total weight of the fiber is 60<A≤99, the proportion of medicine to B in the total weight of the fiber is 0<B≤30, and the medicine is transdermal The C portion of the absorption promoter accounting for the total weight of the fiber is 0<C≤10, and the drug is one of tamoxifen, isoflavones, bromocriptine and danazol or a combination of more than one; The drug transdermal absorption accelerator is one of azone, oleic acid, N-methyl-2-pyrrolidone, propylene glycol, borneol or a combination of more than one. The invention has a simple manufacturing process and is easy to realize; the source of raw materials is abundant and the cost is low; the bra made of medicinal polyacrylonitrile fiber cloth prevents hyperplasia of mammary glands, which is convenient in medication, has little side effects, and does not affect the external beauty of patients, which is very suitable for modern women Human needs for healing and pursuing beauty.
Owner:义乌市宏光针织有限公司
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