DE1091565B - Process for the preparation of 2ª ‡ -Methyl-9ª ‡ -fluoro-4-pregnene derivatives - Google Patents

Process for the preparation of 2ª ‡ -Methyl-9ª ‡ -fluoro-4-pregnene derivatives

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Publication number
DE1091565B
DE1091565B DEA27771A DEA0027771A DE1091565B DE 1091565 B DE1091565 B DE 1091565B DE A27771 A DEA27771 A DE A27771A DE A0027771 A DEA0027771 A DE A0027771A DE 1091565 B DE1091565 B DE 1091565B
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Germany
Prior art keywords
methyl
fluoro
pregnen
preparation
derivatives
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DEA27771A
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German (de)
Inventor
Seymour Bernstein
Milton David Heller
Stephen Myron Stolar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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Publication date
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Publication of DE1091565B publication Critical patent/DE1091565B/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J5/00Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

Verfahren zur Herstellung von 2 a-Methyl-9 a-fluor-4-pregnenderivaten Die Erfindung betrifft ein Verfahren zur Herstellung von 2a-Methyl-9a-fluor-4-pregnenderivaten.Process for the preparation of 2a-methyl-9a-fluoro-4-pregnancy derivatives The invention relates to a process for the preparation of 2a-methyl-9a-fluoro-4-pregnancy derivatives.

Die erfindungsgemäß herstellbaren Verbindungen entsprechen der allgemeinen Formel in der X den 2wertigen Rest = C H O H oder > C = O bedeutet. Diese Verbindungen werden durch Umsetzung von 2a-Methyl-9ß,11ß-oxido-4-pregnen-16a,17a,21-triol-3,20-dion-16a,21-dialkanoaten mit einem Fluorwasserstoff in einem Lösungsmittel, an die sich gegebenenfalls die Oxydation des gebildeten 9a-Fluor-4-pregnen-llß-olderivats zum 11-Keton anschließt, und Verseifung der erhaltenen Verbindungen mit Alkali zu den 2a-Methyl-9a-fluor-4-pregnen-11ß,16a,17a,21-tetraol-3,20-dionen bzw. -16a,17a,21-triol-3,11,20-trionen hergestellt.The compounds which can be prepared according to the invention correspond to the general formula in which X is the divalent radical = CHOH or> C = O. These compounds are prepared by reacting 2a-methyl-9ß, 11ß-oxido-4-pregnen-16a, 17a, 21-triol-3,20-dione-16a, 21-dialkanoates with a hydrogen fluoride in a solvent, to which optionally the oxidation of the 9a-fluoro-4-pregnen-11ß-older derivative formed to the 11-ketone follows, and saponification of the compounds obtained with alkali to give 2a-methyl-9a-fluoro-4-pregnen-11ß, 16a, 17a, 21- tetraol-3,20-dione or -16a, 17a, 21-triol-3,11,20-trione.

Verbindungen der angegebenen allgemeinen Formel weisen eine glucocorticoide Wirksamkeit auf, die der des Hydrocortisons ähnlich ist, und sind als entzündungshemmende Mittel bei Arthritis, Haut- und Augenkrankheiten, Asthma, Verbrennungen, Schleimbeutelentzündung u. dgl. mit gutem Erfolg verwendbar.Compounds of the given general formula have a glucocorticoid Effectiveness that is similar to that of hydrocortisone and are considered to be anti-inflammatory Remedy for arthritis, skin and eye diseases, asthma, burns, bursitis and the like usable with good success.

Dienachdemerfindungsgemäßen Verfahrenherstellbaren Verbindungen können oral, in Form von Tabletten oder Kapseln u. dgl., parenteral, in Suspension oder Lösung oder örtlich in Ölen, Cremen und Salben u. dgl. angewendet weiden.The compounds which can be prepared by the process according to the invention can orally, in the form of tablets or capsules and the like, parenterally, in suspension or Solution or applied topically in oils, creams and ointments and the like.

Ferner können die nach dem erfindungsgemäßen Verfahren erhältlichen 2a-Methyl-9a-halogen-4-pregnen-16a,17a-diolderivate zur Linderung und Behebung von Arthritis, Dermatosen, Asthma, Bursitis und ähnlichen Erkrankungen genauso wie die bekannten 9a-Halogenderivate des Hydrocortisons und Cortisons angewandt werden, ohne jedoch wie letztere zu Störungen des Elektrolythaushalts zu führen. Unter Störung des Elektrolythaushalts wird die Erscheinung verstanden, daß die zulässige Natriumkonzentration in der Zelle überschritten wird, wodurch die Zelle übernormale Mengen an Wasser speichert, da der Organismus das Bestreben hat, die durch die Natriumretention bewirkte Konzentrationserhöhung durch Eintritt weiteren Wassers in die Zelle zu senken. Die Störung des Elektrolythaushalts führt zu einer Verminderung der Herzleistung und zu Ödemen, die es erforderlich machen, die Behandlung vorzeitig, d. h. vor der Behebung der zu bekämpfenden Erkrankungen abzubrechen. Bei der Behandlung von Arthritis u. dgl. mit den nach dem vorliegenden Verfahren erhältlichen Substanzen ist eine derartige Unterbrechung nicht erforderlich, da sie von den unerwünschten Wirkungen der bekannten Substanzen praktisch frei sind.Furthermore, those obtainable by the process according to the invention can 2a-methyl-9a-halogen-4-pregnen-16a, 17a-diol derivatives to alleviate and remedy Arthritis, dermatoses, asthma, bursitis and similar diseases as well as that known 9a-halogen derivatives of hydrocortisone and cortisone are used, but without leading to disturbances of the electrolyte balance like the latter. Under disturbance of the electrolyte balance is understood the phenomenon that the permissible sodium concentration in the cell is exceeded, causing the cell to have abnormal amounts of water stores as the organism has the aspiration brought about by the sodium retention Increase in concentration by entering more water into the cell. the Disturbance of the electrolyte balance leads to a reduction in cardiac output and to edema, which makes it necessary to premature treatment, d. H. before fixing of the diseases to be combated. In the treatment of arthritis and the like The like. With the substances obtainable by the present process is one such Interruption not required as it is known from the undesirable effects of the Substances are practically free.

Das folgende Beispiel erläutert das erfindungsgemäße Verfahren.The following example explains the method according to the invention.

Beispiel Eine Lösung von 0,10g 2a-Methyl-9ß,llß-oxido-4-pregnen-16a,17a,21-triol-3,20-dion-16a,21-diacetat in 25 ml Chloroform (alkoholfrei) wird auf -5°C abgekühlt und dann mit 1 ml wasserfreiem Fluorwasserstoff versetzt. Das Reaktionsgemisch wird 2 Stunden bei - 5'C auf einer mechanischen Schüttelvorrichtung geschüttelt, in Eiswasser gegossen und mit Natriumbicarbonat neutralisiert. Danach extrahiert man mehrere Male mit Chloroform und wäscht die vereinigten Extrakte mit Wasser bis zur Neutralität. Der nach dem Trocknen über Natriumsulfat und Eindampfen zur Trockne erhaltene Rückstand wird in 5 ml Pyridin gelöst und mit 1,0 ml Essigsäureanhydrid versetzt. Die gebildete Lösung wird 16 Stunden bei Zimmertemperatur stehengelassen. Danach wird sie in Wasser gegossen und mehrmals mit Essigsäureäthylester extrahiert. Die vereinigten Extrakte weiden mit Wasser neutral gewaschen, über Natriumsulfat getrocknet und zur Trockne eingedampft. Man erhält ein Öl, das der Verteilungschromatographie an Diatomeenerde unterworfen wird. Das dabei verwendete Lösungsmittelsystem besteht aus 3 Teilen Essigsäureäthylester, 2 Teilen Petroläther (Siedepunkt 90 bis 100°C), 3 Teilen Methanol und 2 Teilen Wasser. Die obere Phase dieses Lösungsmittelgemisches wird als mobile Phase und die untere Phase als stationäre Phase verwendet. Das aus der Säule austretende Eluat wird in einem Beckman-Spektrophotometer, dessen automatischer Ableser auf 240 m#t eingestellt «-orden war, laufend untersucht. Die Ablesevorrichtung läßt vier deutliche Spitzen erkennen, und die dazugehörigen Fraktionen werden jeweils gesondert behandelt. Die letzte dieser Fraktionen (etwa 2 Säulenvolumina) wird zur Trockne eingedampft und liefert 13,0 mg eines Öls, das aus Aceton-Petroläther umkristallisiert wird. Man erhält 5,5 mg 2a-Methyl-9a-fluor-4-pregnen-llß,16a,17a, 21-tetraol-3,20-dion-16a, 21-diacetat (XII) vom F. = 140 bis 200°C. Eine Kristallisation aus Aceton-Petroläther liefert 3,0 mg Substanz von unverändertem Schmelzpunkt. Der Ketoltest mit Tetrazoliumblau ist positiv. Auf dem Papierchromatogram erscheint ein Flecken.Example A solution of 0.10 g of 2a-methyl-9ß, llß-oxido-4-pregnen-16a, 17a, 21-triol-3,20-dione-16a, 21-diacetate in 25 ml of chloroform (alcohol-free) is cooled to -5 ° C and then with 1 ml of anhydrous Hydrogen fluoride added. The reaction mixture is 2 hours at -5'C on a mechanical shaker, poured into ice water and sprinkled with sodium bicarbonate neutralized. Then extracted several times with chloroform and washed combined extracts with water until neutral. The one after drying over Sodium sulfate and evaporation to dryness obtained residue is dissolved in 5 ml of pyridine dissolved and with 1.0 ml of acetic anhydride offset. The educated The solution is left to stand at room temperature for 16 hours. After that she is in water poured and extracted several times with ethyl acetate. The combined extracts willow washed neutral with water, dried over sodium sulfate and dried to dryness evaporated. An oil is obtained which is compatible with partition chromatography on diatomaceous earth is subjected. The solvent system used consists of 3 parts Ethyl acetate, 2 parts of petroleum ether (boiling point 90 to 100 ° C.), 3 parts of methanol and 2 parts of water. The upper phase of this solvent mixture is called mobile Phase and the lower phase used as the stationary phase. The one emerging from the column Eluate is in a Beckman spectrophotometer whose automatic reader is on 240 m # t discontinued "order was continuously examined. The reading device leaves recognize four distinct peaks, and the associated fractions are each treated separately. The last of these fractions (about 2 column volumes) is used for Evaporated to dryness and gives 13.0 mg of an oil which recrystallizes from acetone-petroleum ether will. 5.5 mg of 2a-methyl-9a-fluoro-4-pregnen-11ß, 16a, 17a, 21-tetraol-3,20-dione-16a, 21-diacetate (XII), mp = 140 to 200 ° C. A crystallization from acetone-petroleum ether provides 3.0 mg of substance with an unchanged melting point. The ketol test with tetrazolium blue is positive. A spot appears on the paper chromatogram.

Analyse: C26Ha20sF (491,52). Berechnet ... F 3,87; gefunden..... F 4,47.Analysis: C26Ha20sF (491.52). Calculated ... F 3.87; found ..... F 4.47.

Durch Verseifen von 2-Methyl-9a-fluor-4-pregnenllß, 16a,17a, 21-tetraol-3,20-dion-16a,21-diacetat mit Natrium- oder Kaliumhydroxyd erhält man 2a-Methyl-9a-fluor-4-pregnen-llß,16a,17a, 21-tetraol-3,20-dion. F. =228,5 bis 231°C; @m",x 237 bis 238 m#t; 8 = 15300; [a]ä5 105° (Pyridin); IRma."3,380; 1,712; 1,660 und 1,633 cm-r.By saponifying 2-methyl-9a-fluoro-4-pregnenllß, 16a, 17a, 21-tetraol-3,20-dione-16a, 21-diacetate with sodium or potassium hydroxide, 2a-methyl-9a-fluoro-4 is obtained -pregnen-llß, 16a, 17a, 21-tetraol-3,20-dione. M.p. = 228.5 to 231 ° C; @m ", x 237 to 238 m # t; 8 = 15300; [a] - 5 105 ° (pyridine); IRma."3.380;1.712; 1.660 and 1.633 cm r.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von 2a-Methyl-9a-fluor-4-pregnenderivaten, dadurch gekennzeichnet, daß man ein 2a-l@lethyl-9ß,llß-oxido-4-pregnen-16a,17a, 21-triol-3,20-dion-16a,21-dialkanoat in bekannter Weise in einem Lösungsmittel mit Fluorwasserstoff umsetzt, gegebenenfalls die 11-ständige Hydroxylgruppe des gebildeten 9a-Halogen-4-pregnen-llß-olderivates in bekannter Weise oxydiert und daß man das erhaltene Produkt in ebenfalls bekannter Weise mit Alkali verseift.PATENT CLAIM: Process for the production of 2a-methyl-9a-fluoro-4-pregnancy derivatives, characterized in that a 2a-l @ lethyl-9ß, llß-oxido-4-pregnen-16a, 17a, 21-triol-3,20-dione-16a, 21-dialkanoate in a known manner in a solvent with Reacts hydrogen fluoride, optionally the 11-position hydroxyl group of the formed 9a-halogen-4-pregnen-llß-olderivates is oxidized in a known manner and that the obtained product saponified with alkali in a known manner.
DEA27771A 1956-08-24 1957-08-23 Process for the preparation of 2ª ‡ -Methyl-9ª ‡ -fluoro-4-pregnene derivatives Pending DE1091565B (en)

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US1091565XA 1956-08-24 1956-08-24

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DE1091565B true DE1091565B (en) 1960-10-27

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