| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 552610000 | Acyclic carbon bonded directly at the 17 beta-position of the cyclopentanohydrophenanthrene ring system (e.g., etiocholanic acids, 17 cyanoetiocholanes, 17-aldehydrostanes, etc.) | 9 |
| 20100137622 | INDUSTRIAL METHOD FOR THE SYNTHESIS OF 17-ACETOXY-11beta-[4-(DIMETHYLAMINO)-PHENYL]-21-METHOXY-19-NORPREGNA-4,9-- DIEN-3,20-DIONE AND THE KEY INTERMEDIATES OF THE PROCESS - The present invention relates to a process for the synthesis of the known 17-acetoxy-11-β-[4-(dimethyl amino)-phenyl]-21-methoxy-19-norpregna-4,9-dien-3,20-dione (further on CDB-4124) of formula (I) from 3,3-[1,2-ethandiyl-bis(oxy)]-oestr-5(10),9(11)-dien-17-one of formula (II). Compound CDB-4124 belongs to the group of anti-hormones. The process has the following steps: i) formation of an epoxide; ii) addition of hydrogen cyanide; iii) silylation of a hydroxyl group; iv) reaction with 4-(dimethylamino)-phenyl magnesium bromide Grignard reagent in the presence of CuCl (Teutsch reaction); v) silylation of a hydroxyl group with trimethyl chlorosilane; vi) reaction with diisobutyl aluminum hydride and after addition of acid to the reaction mixture; vii) methoxy-methylation with methoxy-methyl Grignard reagent formed in situ, while hydrolyzing the trimethylsilyl protective groups; viii) oxidation of a hydroxyl group with dicyclohexyl carbodiimide in the presence of dimethyl sulfoxide and a strong organic acid (Swern oxidation), and in given case after purification by chromatography; ix) acetylation of a hydroxyl group with acetic anhydride in the presence of perchloric acid, and in given case, purification by chromatography. The invention also relates to new intermediates of the process. | 06-03-2010 |
| 20100261917 | PROCESS FOR PRODUCING VITAMIN D DERIVATIVE USING PHOTOREACTION - There are provided a novel process for producing [{(5Z,7E)-(1S,3R,20S)-1,3-dihydroxy-9,10-secopregna-5,7,10(19),16-tetraen-20-yl}oxy]-N-(2,2,3,3,3-pentafluoropropyl)acetamide, which process is characterized by irradiating a compound represented by the formula: | 10-14-2010 |
| 20130172587 | Process for the Preparation of Fluticasone Propionate - The present invention relates to a process for the preparation of steroidal 17β-carboxylic thioates. More particularly the present invention relates to a convenient and efficient synthesis of steroidal 17β-carboxylic thioates, such as fluticasone propionate I, using soluble mixed fluorides to introduce fluorine by displacing an appropriate leaving group X in compounds II resulting in selective and controlled fluorination. The present invention also relates to intermediates II and their preparation. | 07-04-2013 |
| 20130225844 | Method for Monofluoromethylation of Organic Substrates to Prepare Biologically Active Organic Compounds - Described is a process for the preparation of monofluoromethylated organic biologically active compounds using monofluoromethylated reagents. Fluticasone Propionate and Fluticasone Furoate can be prepared using, for example, S-monofluoromethyl-S-phenyl-2,3,4,5-tetramethylphenylsulfonium tetrafluoroborate as monofluoromethylating reagent instead of bromofluoromethane. | 08-29-2013 |
| 20130345455 | METHODS OF PREPARING PHARMACEUTICAL SOLID STATE FORMS - The invention provides and describes solid state 17α-ethynyl-5α-androstane-3α,17β-diol including amorphous and crystalline forms and specific polymorphic forms thereof. Anhydrates and solvates of 17α-ethynyl-5α-androstane-3α,17β-diol include Form III anhydrate and Form I solvate. The invention further relates to solid and suspension formulations containing 17α-ethynyl-5α-androstane-3α,17β-diol in a described solid state form and use of the formulations to treat cancers or precancers such as prostate cancer or breast cancer in subjects or human patients. The invention also relates to methods to make liquid formulations from solid state forms of 17α-ethynyl-5α-androstane-3α,17β-diol and uses of such formulations in treating the described conditions. | 12-26-2013 |
| 20160096863 | METHODS OF PREPARING INTERMEDIATE OF FLUTICASONE PROPIONATE - A method of preparing a thioic acid intermediate of fluticasone propionate includes: treating a 17β-[(N,N-dimethyl carbamoyl)thio]carbonyl compound in a solution including an alcohol and an alkali metal hydroxide, an alkaline-earth metal hydroxide, or a mixture thereof to cleave an amide from the 17β-[(N,N-dimethyl carbamoyl)thio]carbonyl compound; treating the solution to separate an aqueous portion; and adding an acid to the aqueous portion to obtain the thioic acid intermediate of fluticasone propionate. A method of preparing fluticasone propionate includes preparing the thioic acid intermediate of fluticasone propionate, and alkylating the thioic acid intermediate of fluticasone propionate to prepare the fluticasone propionate. | 04-07-2016 |
| 20160102117 | METHODS FOR TREATMENT OF INFLAMMATORY CONDITIONS USING S-[4-(3- FLUORO-3-METHYLBUTYRYLOXY) BUT-2-YNYL] 6ALPHA, 9ALPHA-DIFLUORO-17ALPHA-(FURAN-2-YL) CARBONYLOXY-11BETA -HYDROXY-16ALPHA-METHYL-3-OXOANDROSTA-1,4-DIENE-17BETA - CARBOTHIOATE - The present invention relates to methods of treatment of inflammatory conditions using S-[4-(3-fluoro-3-methylbutyryloxy)-but-2-ynyl]6α,9α-difluoro-17α-(furan-2-yl)carbonyloxy-11β-hydroxy-16α-methyl-3-oxoandrosta-1,4-diene-17β-carbothioate (compound of formula I), a novel anti-inflammatory compound of the androstane series and its processes of preparation. | 04-14-2016 |
| 20160159848 | COMPOUNDS AND METHODS INVOLVING STEROLS - Compounds and methods of synthesizing oxysterols are provided. The compounds and methods provided allow the oxysterol to be safely produced at a high yield. The compounds and methods provided can produce the oxysterol in a stereoselective manner. | 06-09-2016 |
| 20160159849 | COMPOUNDS AND METHODS OF MAKING STEROLS USING DIOLS - Compounds and methods of synthesizing oxysterols are provided. The compounds and methods provided allow the oxysterol to be safely produced at a high yield. The compounds and methods provided can produce the oxysterol in a stereoselective manner. | 06-09-2016 |
