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5194602 |
9α-hydroxy-17-methylene steroids, process for their preparation and their use in the preparation of corticosteroids
New 9α-hydroxy-17-methylene steroids are prepared by the introduction of a substituted 17-methylene group in 9α-hydroxyandrost-4-ene-3, 17-dione.The resulting compounds are useful starting c...
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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...
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4390533 |
Steroids and process for preparing the same
The present invention relates to 2-chloro-6β-fluoro-pregna-1,4-diene-3,20-diones having good anti-inflammatory activity, to processes for their preparation and pharmaceutical compositions thereof.
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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...
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4233296 |
11β-Substituted-Δ4,9 -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...
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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...
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4155923 |
Process for the preparation of 17β-hydroxy-20-alkoxypregnane-21-oic acid derivatives
A process for the preparation of 17β-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 α-or β...
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4031074 |
Process for the preparation of 11β-hydroxy-18-alkyl-estrane compounds
The present invention relates to a novel process for the preparation of 11β-hydroxy-18-alkyl-estrane compounds by reacting an 11β-hydroxy-13-methyl-gonane compound with an excess of an a...
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3998813 |
Process for the preparation of 11β-hydroxy-18-alkyl-estrane compounds
The present invention relates to a novel process for the preparation of 11β-hydroxy-18-alkyl-estrane compounds by reacting an 11β-hydroxy-13-methyl-gonane compound with an acylhypoiodite to give a...
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3960842 |
Process for the preparation of 17β-oxalyl steroids
20-Cyano-17α-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 ...
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3876637 |
Novel Δ9 - gonene-11-ones
Racemates and optically active isomers of novel Δ9 -gonene-11-ones of the formula ##SPC1## Wherein R is alkyl of 1 to 3 carbon atoms, R1 is selected from the group consisting of =0, ketals and ...
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3869452 |
14Beta,18-(epoxyethanoimino) steroids
Compounds of the class of 14β,18-(epoxyethanoimino)-pregnane derivatives and their pharmceutically acceptable acid addition salts have cardiotonic activity and are active ingredients of ...
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3857834 |
REAGENTS FOR ALDEHYDE SYNTHESIS
Reagents for aldehyde synthesis, particularly for formyl-olefination, of the general formula: ##SPC1## Wherein R1 represents a lower alkyl group, R2 represents R1 O or an alkyl, aralkyl or aryl...
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3800009 |
2-PHOSPHONO-3-AMINO ACRYLIC ACID ESTERS
Reagents for aldehyde synthesis, particularly for formyl-olefination, of the general formula: ##SPC1## Wherein R1 represents a lower alkyl group, R2 represents R1 O or an alkyl, aralkyl or aryl...
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3714353 |
THERAPEUTIC COMPOSITIONS COMPRISING A 6α; 9α-DIFLUORO-11β,1α,21-TRIHYDROXY-16α-METHYL-1,4-P REGNADIENE-3,20-DIONE AND 21-ACYLATES
This invention relates to therapeutic compositions and more particularly to therapeutic compositions comprising a 6α,9α-difluoro-11β,17α,21-trihydroxy-16α-meth yl-1,4-pregnadiene-3,20-dione and ...
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3673284 |
2-HYDROCARBYL AMINOVINYL PHOSPHONATES OR PHOSPHINATES
Reagents particularly useful for the preparation of αβ-unsaturated aldehydes are provided herein, which reagents consist of compounds of the general formula: wherein R1 is a lower alkyl group, R2 i...
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3626063 |
THERAPEUTIC COMPOSITIONS COMPRISING 6-FLUORO-16-METHYL PREDNISOLONE, THE 21 ACYLATES AND SALTS THEREOF
This invention relates to therapeutic compositions and more particularly to therapeutic compositions comprising a 6α-fluoro-11β,17α,21-trihydroxy, 16α-methyl-1,4-pregnadiene-3,20-dione and 21-...
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3541082 |
STEROIDAL DELTA**16-20(ALPHA AND BETA)-HYDROPEROXIDE 21-ETHERS
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3535348 |
3-OXIMES OF 17(20)-EN-21-OIC ACIDS OF THE PREGNANE SERIES
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3499016 |
6ALPHA-FLUORO-16ALPHA-METHYL DERIVATIVES OF THE PREGNANE SERIES
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3810887 |
NOVEL 11BETA-ALKOXY STEROIDS
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3799955 |
METHOD OF MAKING 11 ALPHA-OR 11 BETA-HYDROXY-18-NOR-17-ALPHA-ALKYL-17 BETA-METHYLANDROSTA-4,13-DIENE-3-ONES
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3781271 |
PROCESS FOR THE PRODUCTION OF 14BETA-HYDROXY-DELTA16-AND 7ALPHA-HYDROXY-DELTA4-STEROIDS
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3658856 |
PROCESS FOR PREPARING USEFUL 17ALPHA-HYDROXY-20-KETO-21-ACYLOXY PREGNANES
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3557158 |
6ALPHA-FLUORO-16-METHYL - 4 - PREGNENE 3,20-DIONES AND INTERMEDIATES PRODUCED IN THE SYNTHESIS THEREOF
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3591611 |
3-OXYGENATED-17-UREIDO-ANDROSTANES AND PROCESS
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3476794 |
13,17-SECO-17-NITRILE-DELTA**13(18) STEROIDS OF THE ANDROSTANE AND ESTRANE SERIES AND THE PROCESS FOR THE PREPARATION THEREOF
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3458504 |
STEROIDO(3,4-C)PYRAZOLES OF THE 5ALPHA- AND 5BETA-ANDROSTANE SERIES
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3435057 |
16ALPHA,17ALPHA-ETHYLENE AND SUBSTITUTED ETHYLENE PREGNANE DERIVATIVES AND PROCESS
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3435029 |
16 - OXYGENATED - 20 - METHYL - 21 - OIC ACIDS AND 16 - OXYGENATED - 17ALPHA,20 - METHYLENE-21-OIC ACIDS OF THE PREGNANE SERIES AND THE 21-LOWER ALKYL ESTERS THEREOF
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3402173 |
18-lower alkyl pregnanes and derivatives
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3398140 |
Steroido [17. 16-c] pyrozoles and preparation thereof
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3393212 |
Derivatives of 4alpha, 8, 14-trimethyl-18-nor-5alpha, 8alpha, 14beta-androstanes
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3388138 |
16alpha-fluoromethyl-21-fluoro and 21-desoxy compounds of the pregnane series
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3383385 |
Process for the preparation of steroid derivatives of the pregnane series
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3374253 |
Process for the preparation of 17(20)-21-al pregnenes
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3325480 |
5'-substituted steroidal pyrazoles of the pregnane series
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3305546 |
Process for the production of 16-halo-17(20)-pregnenes
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3290293 |
4-androsteno-[3, 2-c] pyrazoles
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3281415 |
Steroidal delta16-20 (alpha and beta)-hydroperoxides
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3268521 |
16 alpha-hydroxy-21-carboxylic acid gamma-lactones of the pregnane series and the 16beta-methyl derivatives thereof
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3265717 |
Pentacyclic steroids and process for their preparation
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3262949 |
7-methyl androstane compounds
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3261851 |
16alpha-fluoromethyl compounds of the pregnane series and processes for the production thereof
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3261831 |
11-keto-12beta-hydroxy progesterone and derivatives thereof
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3255183 |
Process for the reduction of a faworskii ester
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3247192 |
18, 20-lactone of 20-hydroxypregnane-18-acids
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3236840 |
Cortisone 21-mesylate and intermediates in the preparation thereof
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3219565 |
Method of producing 10alpha-methyl steroids
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3216996 |
1-methyl pregnanes
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