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| Number | Title | Issue Date |
| 5194602 | 9-hydroxy-17-methylene steroids, process for their preparation and their use in the preparation of corticosteroids New 9-hydroxy-17-methylene steroids are prepared by the introduction of a substituted 17-methylene group in 9-hydroxyandrost-4-ene-3, 17-dione. The resulting compounds are useful starting compounds in the synthesis of corticosteroids.... | 03/16/1993 |
| 4767856 | Preparation of caprolactam from 6-aminocaproic acid, esters and amides In an improved process for preparing caprolactam by heating 6-aminocaproic acid, an ester or amide or mixture thereof in the presence of an inert reaction medium which is liquid under the reaction conditions and has a boiling point above that of caprolact... | 08/30/1988 |
| 4710495 | Soft steroids having anti-inflammatory activity Novel soft steroid anti-inflammatory agents, said agents being esters or thioesters of 17-alkoxy-11ଲ-hydroxyandrost-4-en-3-one-17ଲ-carboxylic acids, pharmaceutical compositions containing said agents, novel chemical intermediates u... | 12/01/1987 |
| 4390533 | Steroids and process for preparing the same The present invention relates to 2-chloro-6ଲ-fluoro-pregna-1,4-diene-3,20-diones having good anti-inflammatory activity, to processes for their preparation and pharmaceutical compositions thereof.... | 06/28/1983 |
| 4357279 | Preparation of corticoids from 17-keto steroids A process for the preparation of corticoids (XI) which comprises reacting a protected 17-keto steroid (II) with a metallated 1,2-dihaloethene (III).... | 11/02/1982 |
| 4303654 | Novel 21-chloro-20-acetylenic steroids Novel 21-chloro-20-acetylenic steroids of the formula ##STR1## wherein R1 is alkyl of 1 to 3 carbon atoms, R is selected from the group consisting of hydrogen and acyl of an organic carboxylic acid of 1 to 18 carbon atoms, X is selected fr... | 12/01/1981 |
| 4275061 | Steroids and process for preparing the same The present invention relates to 2-chloro-6ଲ-fluoropregna-1,4-diene-3,20-diones having good anti-inflammatory activity, to processes for their preparation and pharmaceutical compositions thereof.... | 06/23/1981 |
| 4233296 | 11ଲ-Substituted-Ɗ4,9 -estradienes Novel steroids of the formula ##STR1## wherein R1 is linear or branched alkyl of 1 to 12 carbon atoms, unsaturated alkyl of 2 to 8 carbon atoms optionally substituted, optionally substituted aryl of 6 to 12 carbon atoms, optionally su... | 11/11/1980 |
| 4226862 | Steroids and process for preparing the same Novel steroids are described together with processes of making them and pharmaceutical compositions containing them. The steroids have pharmaceutical activity, especially anti-inflammatory activity. They are all 2-Bromo-6ଲ-fluoro-pregna-1,4-diene-3,... | 10/07/1980 |
| 4216159 | Synthesis of 16-unsaturated pregnanes from 17-keto steroids 17-Keto steroids (I) in their protected form (IIa or IIb) are reacted with a metalated olefin (VI) to give a 21-aldehyde (IV) which is readily transformed to a 16-unsaturated pregnane (V) which is useful in the production of commercially important substit... | 08/05/1980 |
| 4155923 | Process for the preparation of 17ଲ-hydroxy-20-alkoxypregnane-21-oic acid derivatives A process for the preparation of 17ଲ-hydroxy-20-alkoxypregnane-21-oic acid derivatives of the formula ##STR1## WHEREIN R1 is methyl or ethyl; R2 is hydrogen or methyl, either being in the -or ଲ-position; R | 05/22/1979 |
| 4031074 | Process for the preparation of 11ଲ-hydroxy-18-alkyl-estrane compounds The present invention relates to a novel process for the preparation of 11ଲ-hydroxy-18-alkyl-estrane compounds by reacting an 11ଲ-hydroxy-13-methyl-gonane compound with an excess of an acylhypoiodite to give an estrano-18,11ଲ-lactone, re... | 06/21/1977 |
| 3998813 | Process for the preparation of 11ଲ-hydroxy-18-alkyl-estrane compounds The present invention relates to a novel process for the preparation of 11ଲ-hydroxy-18-alkyl-estrane compounds by reacting an 11ଲ-hydroxy-13-methyl-gonane compound with an acylhypoiodite to give an 11ଲ-hydroxy-13-iodomethyl-gonane compou... | 12/21/1976 |
| 3960842 | Process for the preparation of 17ଲ-oxalyl steroids 20-Cyano-17-H steroids having as the 17-position substituent the group ##EQU1## wherein R is H, alkyl of 1-8 carbon atoms or benzyl, having a 13-methyl or 13-ethyl group and which are unsubstituted or substituted with an -methyl gr... | 06/01/1976 |
