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| Number | Title | Issue Date |
| 6262042 | 17ଲ-amino and hydroxylamino-11ଲ-arylsteroids and their derivatives having agonist or antagonist hormonal properties The invention is directed to a novel class of steroids which exhibit potent antiprogestational activity.... | 07/17/2001 |
| 5792859 | Intermediates for 20-oxo-17,21-diol steroids Novel intermediate compounds of formula IV, V, VI, VII and VIII which are useful for the preparation of steroids of the formula ##STR1## wherein the substituents are defined in the specification.... | 08/11/1998 |
| 5723638 | Process for 20-oxo-17,21-diol steroids The invention is drawn to a process for the preparation of a steroid of the formula ##STR1## wherein R1 is hydrogen or alkyl of 1 to 4 carbon atoms, R2 is alkyl of 1 to 4 carbon atoms and theo A, B, C, and D ring system has at ... | 03/03/1998 |
| 5721227 | 17-aryl and 17-heterocyclyl-14ଲ-5-androstane, androstene and androstadiene derivatives active on the cardiovascular system, processes for their preparation and pharmaceutical compositions containing same 17-Aryl -5,14ଲ-androstane, androstene and androstadiene derivatives of formula (I): ##STR1## wherein the symbol --- represents a single or a double bond; when the double bond is not present in the 4 or 5 position, the hydrogen in po... | 02/24/1998 |
| 5108996 | 19-nor-3-keto steroids A compound selected from the group consisting of a compound of the formula ##STR1## wherein R2 and R'2 are individually hydrogen or methyl, R11 is an organo of 1 to 18 carbon atoms optionally containing at least one h... | 04/28/1992 |
| 4511511 | Prednisolone derivatives Novel prednisolone derivatives modified at C-17,C-20 and/or C-21 positions. Many of the compounds are anti-inflammatory agents which do not significantly suppress the pituitary-adrenal axis.... | 04/16/1985 |
| 4340538 | Process for producing 6-fluoro-Ɗ1,4 -3-keto steroids Two processes are disclosed (one-pot and two-pot) for the transformation of a 6ଲ-fluoro-Ɗ1,4 -3-keto steroid (IV) to a 6-fluoro-Ɗ1,4 -3-keto steroid (VI). These processes permit the introduction of a fluorine atom at t... | 07/20/1982 |
| 4192871 | Chemical compounds Pregnanes and androstanes are described which essentially possess a 3-hydroxy group, a 5-hydrogen atom or a 4.5- or 5,6-double bond, a 17-hydrogen atom and an 11ଲ-aminoester group. Other optional substituents or double bonds may... | 03/11/1980 |
| 4089852 | Process for the preparation of 21-hydroxy-16-pregnen-20-one derivatives Ɗ16 -21-HYDROXY-20-KETO STEROIDS OF THE PREGNANE SERIES HAVING AN OTHERWISE UNSUBSTITUTED D-ring and a 13-methyl or -ethyl group, and 21-ethers and -esters thereof, are produced by reaction of a corresponding D-ring saturated 17-keto steroid w... | 05/16/1978 |
