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5710293 |
Method of preparation of ester derivatives of steroids
The present invention relates to a method of using a perchloric acid catalyzed reaction to make acyl derivatives of norprogesterone compounds and, in particular,...
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5670676 |
Process for preparation of 9α -chloro-11β formyloxypregna-3.20-diones
Disclosed is a process for producing a compound of the formula: ##STR1## by reacting a compound of the formula: ##STR2## with: (1) a chlorinating reagent selected from an N-chloroimide or an...
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5352808 |
Process for steroid preparation
A process for the preparation of a compound of the formula ##STR1## wherein R 1 is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms optionally substituted by halogen or...
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4588718 |
Carboxy containing ester prodrugs of corticosteroids
A compound of the formula ##STR1## wherein St represents a corticosteroid moiety bonded to the carbonyl via the 21-hydroxy group of said corticosteroid; wherein Z is a bond or --O--; wherein ...
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4472392 |
Sulfonate containing ester prodrugs of corticosteroids
Novel solution stable ester prodrugs of corticosteroids of the formula ##STR1## and their salts.
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4456602 |
Amine containing ester prodrugs of corticosteroids
Novel solution stable ester prodrugs of corticosteroids of the formula ##STR1##
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4444689 |
17α-Acyloxy-5β-corticoids and 17α-acyloxy-5α-corticoids
17α-Acyloxy-5β-pregnanes (I) and 17α-acyloxy-5α-pregnanes (IV) have an excellent activity split providing high topical anti-inflammatory activity with very low systemic side effects.
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4267173 |
Use of 6β-fluoro-7α-halogenocorticoids as topical anti-inflammatories and pharmaceutical formulations useful therefor
Described is the use of 6β-fluoro-7α-halogeno-1,4-pregnadiene-17α,21-diol-3,20-di
ones and their esters as topical anti-inflammatory agents, and pharmaceutical formulations thereof useful...
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4124707 |
7α-Halogeno-3,20-dioxo-1,4-pregnadienes, methods for their manufacture, their use as anti-inflammatory agents, and pharmaceutical formulations useful therefor
Novel 3,20-dioxo-7α-halogeno-1,4-pregnadienes are described and their use as anti-inflammatory agents. Preferred are 7α-bromo- and 7α-chloro- derivatives, particularly 7α-bromo- and...
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3984544 |
Retinoic acid esters of steroids of the pregnane series, their use in the treatment of acne and pharmaceutical formulations useful therefor
Novel retinoic acid esters of anti-inflammatory steroids of the pregnane series are described and their use in the treatment and control of acne vulgaris via the topical or intralesional route. A...
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3758523 |
PROCESS FOR THE PREPARATION OF DELTA 4-3-OXO-1-ALPHA-METHYL STEROIDS
Δ 4 -3-Oxo-1α-methyl steroids are produced by the reaction of Δ 1 ,4 -3-oxo steroids with dimethyllithium copper.
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3494918 |
2-CARBONYL-PREGNATRIENES AND A METHOD FOR THEIR PREPARATION
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3463793 |
PROCESS FOR THE PREPARATION OF 9ALPHA-HALOGENO-11BETA-SUBSTITUTED STEROIDS
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3423434 |
PROCESS FOR THE PREPARATION OF DELTA**1,4-3-KETO STEROIDAL COMPOUNDS
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3419582 |
Pentacyclic steroids and process
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3419550 |
Pentacyclic steroid intermediates and method of preparing the same
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3415851 |
Method for the manufacture of steroidal delta-1,4-dieneones and new product obtainedthereby
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3338930 |
Process for the hydrolysis of bismethylenedioxy derivatives
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3329693 |
delta1, 4-17alpha, 20beta, 21-trihydroxy-3, 11-diketopregnadiene-derivatives
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3325480 |
5'-substituted steroidal pyrazoles of the pregnane series
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3314945 |
6-formyl pregnadienes
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3296255 |
2-cyano steroids
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3287356 |
Dihaloalkylation of keto steroids
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3265686 |
2-aminomethylene-3-oxo steroids and preparation thereof
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3257425 |
1-substituted-5, 10-methylene-19-nor-3-keto and 3-substituted-5, 10-seco-5, 19-cyclo-delta-steroids
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3251866 |
2alpha, 16alpha-dimethyl-11beta, 17alpha, 21-trihydroxy-4-pregnene-3, 20-dione and derivatives thereof
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3245985 |
Process for preparing 2alpha, 16alpha-dialkyl steroids of the pregnene series
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3216996 |
1-methyl pregnanes
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3210391 |
1alpha-methylcorticosteroids
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3205226 |
19-nor-5(10)-dehydro steroids and methods for their manufacture
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3200134 |
delta1, 4-3, 20-diketo-17alpha, 20, 21-trihydroxy pregnadienes
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3163664 |
21-hemi-alpha, beta-dialkylsuccinates of corticoids
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3160643 |
3-enol ethers of 2-formyl-3-oxo-5alpha-steroids and process for preparing same
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3155692 |
3-enol ethers of 2-hydroxymethyl-3-oxo-5alpha-steroids and process for preparing same
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3153647 |
Process for preparing 2alpha-substituted-3-keto-delta4-steroids
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3152154 |
17-monoesters of 17alpha, 21-dihydroxy steroids and process for the preparation thereof
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3141029 |
16alpha-alkoxy-6-dehydrocortical hormones
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3139425 |
17alpha, 21-alkoxy-methylenedioxy pregnenes and pregnadienes and process therefor
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3132163 |
Corticosteroid hemiacetals and dihemiacetals and their esters
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3129221 |
4-methyl-6-exomethylene steroids and processes
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3116304 |
15-alkyl steroids
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3105843 |
4, 4-dimethyl pregnanes
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3088952 |
1beta-cyano derivatives of delta4-3-keto pregnenes
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3088950 |
21-fluoro 2-alkyl pregnene compounds
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3088946 |
Steroidal c-6 alkinyl or alkenyl derivatives and process for the preparation thereof
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3076822 |
4-methyl-3-oxo-delta steroids and methods for preparing same
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3074934 |
Production of 11beta,17alpha-dihydroxy-1-methyl-17beta(1-oxo-2-hydroxyethyl)-4-estren-3-one and 11beta,17alpha-dihydroxy-1-methyl-17beta(1-oxo-2-hydroxyethyl)-4,6-estradiene-3-one and esters thereof
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3070507 |
Novel corticoids from delta16-20-ketoalkenyl adducts
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3070504 |
Lower alkyl alkenyl ether adducts of delta16-20-ketosteroids and process therefor
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3062846 |
(lower alkoxy) methyl ether derivatives of steroids and process therefor
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