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4857518 |
Hydroxylated 24-homo-vitamin D derivatives and methods for preparing same
This invention is directed to new 24-homo-vitamin D compounds, to methods for preparing the same and novel intermediate compounds. The compounds are characterized by vitamin D-like activity of the...
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4670190 |
1-α-hydroxy vitamin D compounds and process for preparing same
The invention provides novel 1α-hydroxy vitamin D compounds and a method for their preparation from 1α-hydroxy-25-hydrogen cholesta-5,7-dienes by irradiation and isomerization techniques. The...
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4647410 |
Novel 17-substituted steroids
Novel 17-(formamidosulfonylmethylene)-steroids of the formula ##STR1## useful as intermediates for the novel 17-(isocyanosulfonylmethylene)-steroids of the formula ##STR2## which are useful...
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4588528 |
1,24-dihydroxy-Δ.sup.22 -vitamin D.sub.3 and process for preparing same
The invention provides new derivatives of vitamin D 3 and specifically (22E,24R)-1,24-dihydroxy-Δ 22 -vitamin D 3 and (22E,24S)-1,24-dihdroxy-Δ 22 -vitamin D 3 . The compounds exhibit vitamin...
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4411833 |
Method for preparing 26,26,26,27,27,27-hexafluoro-1α,25-dihydroxycholesterol
This invention provides a new method for preparing 26,26,26,27,27,27-hexafluoro-1,25-dihydroxycholesterol. The method permits the use of cholenic acid or an ester of cholenic acid as the starting...
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4358406 |
26,26,26,27,27,27-Hexafluoro-1α,25-dihydroxycholecalciferol and process for preparing same
This invention provides a new derivative of vitamin D, 26,26,26,27,27,27-hexafluoro-1α,25-dihydroxycholecalciferol
, a process for preparing the same, and novel intermediate compounds. The...
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4305881 |
Process for 1α,3β-dihydroxy-Δ.sup.5 -steroids
A process for the synthesis of 1α,3β-dihydroxy-Δ 5 -steroids from steroids such as 1α,2α-epoxy-cholesta-4,6-dien-3-one, which is reacted with lithium in liquid ammonia in the absence of a...
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4287129 |
Synthesis of 1α-hydroxy-7-dehydrosteroids
Enol acetylation is carried out on a variety of 1,4,6-trien-3-ones to form 1,3,5,7 tetraene structures from which 1α-hydroxy-7-dehydro steroids are obtained. The compounds are intermediates used...
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4269777 |
Isotopically labeled vitamin D derivatives and processes for preparing same
This invention relates to isotopically labeled vitamin D compounds, including radiolabeled vitamin D compounds of high specific activity, methods for their preparation, and novel intermediates in...
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4264512 |
3-Deoxy-1α-hydroxy- and 3-deoxy-1α,25-dihydroxycholecalciferol and processes for the preparation thereof
Processes for the preparation of 3-deoxy-1α-hydroxycholecalciferol and 3-deoxy-1α,25-dihydroxycholecalciferol, novel analogs of cholecalciferol possessing potent intestinal calcium transport...
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4264513 |
1α-hydroxy-25-keto-27-nor-cholecalciferol and processes for preparing same
The invention provides new vitamin D derivatives as well as new intermediate compounds derived during the processes for preparing such new derivatives. The new derivatives have been identified as...
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4254045 |
1α-Hydroxy-2β-fluorocholecalciferol
The invention provides new derivatives of vitamin D 3 , specifically, 1α-hydroxy-2β-fluorocholecalciferol. The compound is characterized by vitamin D-like activity as measured by its ability to...
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4193921 |
Pregnane derivatives
The present invention relates to pregnane derivatives of the formula ##STR1## wherein R 1 and R 3 are hydroxyl groups or readily cleavable etherified or esterified hydroxyl groups and R 20 is...
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4098801 |
Synthesis of 1α-hydroxylated derivatives of cholesterol
A process for the preparation of 1α-hydroxylated cholesterol derivatives useful for the synthesis of 1α-hydroxylated cholecalciferols, is disclosed.
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4069321 |
Blocked cholecalciferol and dihydrotachysterol 3 derivatives
Novel cholecalciferol and dihydrotachysterol 3 derivatives produced against metabolic conversions at the 25-position, their preparation, pharmaceutical compositions, methods of treating...
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4046760 |
Process for preparing 1-α-hydroxy cholesterol derivatives
Improved processes are described for introducing a 1-α-hydroxy group into the cholesterol ring system. Novel intermediates and their preparation are disclosed.
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4022891 |
Novel 1α,24-dihydroxycholecalciferol compositions, novel precursors thereof, and processes for preparing them
Novel 1α, 24-dihydroxycholecalciferol and derivatives thereof which are useful with reduced side-effects for the treatment of abnormal metabolism of calcium and phosphorus caused by liver failure,...
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3907843 |
1α-Hydroxyergocalciferol and processes for preparing same
1α-Hydroxyergocalciferol and method for preparing same. The compound is characterized by antirachitic activity comparable to that of the D-vitamins and finds application in situations where the...
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3901928 |
1α,3β-Dihydroxy steroid-5-enes method of preparing same and their use for preparing 1α-hydroxy-25-hydrogen vitamin D compounds
1α,3β-DIHYDROXY STEROID-5-ENES ARE PREPARED BY THE REDUCTION OF 1α-HYDROXY- AND 1α,2α-EPOXY- STEROID-4,6-DIENE-3-ONES AND CORRESPONDING 6-SUBSTITUTED STEROID-4-EN-3-ONES WHERE THE...
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3887545 |
Synthesis of 1α-hydroxylated cholesterol derivatives
Synthesis of 1 α-hydroxylated cholesterol derivatives, particularly 1α-hydroxycholesterol and 1α,25-dihydroxycholesterol and intermediates therefor.
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3879383 |
2-Halogen-18-methyl-1-androstene
An androstene steroid of the formula ##SPC1## Wherein R is hydrogen or an acid residue or a lower alkyl or tetrahydropyranyl group and wherein X is chlorine or bromine. The compounds are useful for...
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3835160 |
3'-KETO-2',3'-SECO-1'-(2')-YNE STEROIDAL DERIVATIVES, METHODS FOR THEIR MANUFACTURE, AND COMPOUNDS PRODUCED THEREBY
Described herein are novel 3'-keto-2',3'-seco-1'(2')-yne steroidal structures and processes for their preparation and, in particular, the preferred embodiment thereof, i.e., 5-keto-4,5-seco-3-ynes...
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3723418 |
PROCESS FOR THE MANUFACTURE BETA-HYDROXY-STEROID-KETONES
α,β-Oxido-steroid-ketones are converted into β-hydroxy-ketones according to the partial formulas scheme ##SPC1## When they are treated with tri-n-butylstannane in an organic solvent while...
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3681410 |
PROCESS FOR PREPARING 17α-HYDROXY-20-KETO AND 17α,21-DIHYDROXY-20-KETO PREGNANES AND DERIVATIVES AND INTERMEDIATES THEREOF
New processes for preparing 17α-hydroxy-20-keto and 17α,21-dihydroxy-20-keto pregnanes and derivatives thereof, which compounds are useful as progestational and anti-inflammatory agents. The...
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3514448 |
17-OXYGENATED 2-HALO-4-(METHYL/METHYLENE) - 5ALPHA - ANDROST - 1 - EN-3-ONES AND PRECURSORS
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3483234 |
STEROIDAL 17-ADAMANTOYL ESTERS
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3480620 |
1,2-EPOXY-STEROIDS
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3409642 |
1-substituted 9beta, 10alpha-steroids of the androstane series
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3405125 |
1-oxygenated androstanes
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3313833 |
Process for 5alpha-androstane 1alpha, 17beta-diol-3-one
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3310470 |
Androstane-1alpha, 3alpha, 17beta-triol and fatty acid esters thereof
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3257428 |
1, 17-dioxygenated 5alpha-androstanes and delta analogs
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3252930 |
Intermediates in the synthesis of 1alpha-hydroxy-3-ketosteroids
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3211758 |
Process for the manufacture of fluorinated steroids
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3210385 |
2, 19-cyclo-1, 3-diketo and 10alpha-19-oic acid derivatives of the androstane and pregnane series
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3069435 |
Anabolically active 2-chlor-delta1-androsten-17-ol-3-ones and method of making same
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2980710 |
2-haloandrost-1-ene-3, 17-diones
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2851454 |
1, 2-epoxy-3, 17-dioxygenated androstane derivatives and their reduction
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3657434 |
Title is not available
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3796728 |
Title is not available
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3658856 |
Title is not available
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3637670 |
Title is not available
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