Abstract: The present invention relates to a new process for the synthesis of 3?-hydroxy-5?-pregnan-20-one, commonly known as brexanolone, wherein the corresponding cyclic 20-ketal or cyclic 20-thioketal compound of formula (IV) is deprotected with the use or iodine in an organic solvent: (I).

Abstract: The present invention refers to a process for the industrial-scale preparation of 17?-hydroxy-6?,7?; 15?,16?-dimethylene-3-oxo-17?-pregn-4-ene-21-carboxylic acid y-lactone, known by the common name of Drospirenone, in the form of a fine powder without the use of mechanical grinding or micronization techniques. but rather exploiting a double change of crystalline form, from Crystalline Form I to Crystalline Form II and from Crystalline Form II to Crystalline Form I. The invention also refers to the new Crystalline Form II of Drospirenone obtained in the process.

Abstract: The present invention to a process for the preparation of the sodium salt of 4-[[(1R)-2-[5-(2-fluoro-3-methoxyphenyl)-3-[[2-fluoro-6-(trifluoromethyl)phenyl]methyl]-3,6-dihydro-4-methyl-2,6-dioxo-1(2H)-pyrimidinyl]-1-phenylethyl]-amino]-butanoic acid, compound also known as Elagolix sodium salt, having the formula (I) reported below:

Abstract: The present invention relates to a process for preparing (15?,16?,17(?)-Estra-1,3,5(10)-triene -3,15,16,17-tetrol monohydrate, also known as Estetrol monohydrate.

Abstract: The present invention relates to a process for preparing (15?,16?,17?)-Estra-1,3,5(10)-triene-3,15,16,17-tetrol, also known as Estetrol, having the formula shown below:

Abstract: A process for the synthesis of ?-hydroxy 3-17-(1H-benzimidazol-1-yl)androsta-5,16-diene is described, a compound also known as Galeterone and used in the treatment of prostate cancer, having the formula (6).

Abstract: A process for the synthesis of ?-hydroxy 3-17-(1H-benzimidazol-1-yl)androsta-5,16-diene is described, a compound also known as Galeterone and used in the treatment of prostate cancer, having the formula 6).

Abstract: The present invention relates to a new process for the synthesis of 17?-hydroxy-des-A-androst-9,10-en-5-one, the compound of the following formula (1), which can be used as an intermediate in the synthesis of retroprogesterones.

Abstract: The present invention relates to a new process for the synthesis of 17?-hydroxy-des-A-androst-9,10-en-5-one, the compound of the following formula (1), which can be used as an intermediate in the synthesis of retroprogesterones.

Abstract: A process is described wherein, by employing 17?-(3-hydroxypropyl)-6?,7?;15?,16?-dimethylene-5?-androstane-3?,5,17?-triol (II) as starting product, in a single stage reaction there is obtained drospirenone, (I), a synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic action, that is useful for preparing pharmaceutical compositions with contraceptive action.

Abstract: The present invention relates to a novel process for the synthesis of abiraterone and in particular abiraterone acetate, a compound of formula (I) reported below: having pharmacological activity suitable for slowing down the progression of advanced stage prostate cancer. The process is characterized by the fact that the intermediate triflation step is carried out on prasterone (DHEA) or its 3-acetate using Ar—N(OTf)2 as the triflation reagent, but where Ar is not phenyl, and by the fact that the base used in this step is an alkali metal alcoholate.

Abstract: The present invention relates to a novel process for the synthesis of abiraterone, and in particular of abiraterone acetate, compound of formula (I) reported below: N O (I) which has pharmacological activity useful for slowing down the progression of prostate cancer at an advanced stage. The process is characterized by an intermediate step wherein DHEA-acetate is triflated using Ar—N(OTf)2 as the triflation reagent.

Abstract: An improved process for the preparation of intermediate (V) through the elimination of a molecule of water from intermediate (IV) is described. Intermediate (V) is a key molecule for the synthesis of eplerenone, a synthetic steroid with pharmacological activity used in the treatment of chronic pathological conditions, including hypertension.

Abstract: A process is disclosed wherein, using either 17a-(3-hydroxypropyl)-6p,7p;15p,16p-dimethylene-5p-androstane-3p,5,17p-triol (II) or 3?,5^ïI^?^-6?,7?;15?,16?-dimethylene-5?,17?-pregnane-21,17-carbolactone (III) as starting material, through a single-step reaction it is obtained drospirenone (I), a synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic activity, useful for preparing pharmaceutical compositions with contraceptive action.

Abstract: There is described a process for the industrial synthesis of 11-methylene-18-methyl-estr-4-en-3,17-dione, a compound having the structure formula (I) depicted below: (Formula I) (I) useful as intermediate compound in the synthesis of the progestin compounds Desogestrel and Etonogestrel.

Abstract: It is described of a process for the preparation of drospirenone, the compound of formula 1 shown below, a synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic activity, useful for preparing pharmaceutical compositions having contraceptive action, starting from 17?-(3-hydroxypropyl)-6?,7?;15?,16?-dimethylene-5?-androstane-3?,5,17?-triol.

Abstract: A process is described, comprising the oxidation of 17?-(3-hydroxypropyl)-6?,7?,15?,16?-dimethylen-5?-androstan-3?,5,17?-triol, for the preparation of drospirenone, a synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic activity, useful for preparing pharmaceutical compositions with contraceptive action.

Abstract: A process is described, comprising the oxidation of 17?-(3-hydroxypropyl)-6?,7?,15?,16?-dimethylen-5?-androstan-3?,5,17?-triol, for the preparation of drospirenone, a synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic activity, useful for preparing pharmaceutical compositions with contraceptive action.

Abstract: A process is described for the preparation on an industrial scale of N-[2-(8S)-1,6,7,8-tetrahydro-2H-indeno[5,4-b]furan-8-yl]ethyl]propionamide, ramelteon, having the structure illustrated below:

Abstract: A process is described for the preparation of drospirenone, a synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic activity, useful for preparing pharmaceutical compositions with contraceptive action by the oxidation of 17?-(3-hydroxypropyl)-6?,7?,15?, 16?-dimethylene-5?-androstane-3?,5,17?-triol.