CH275617A - Process for the production of 11-keto-progesterone. - Google Patents

Process for the production of 11-keto-progesterone.

Info

Publication number
CH275617A
CH275617A CH275617DA CH275617A CH 275617 A CH275617 A CH 275617A CH 275617D A CH275617D A CH 275617DA CH 275617 A CH275617 A CH 275617A
Authority
CH
Switzerland
Prior art keywords
progesterone
keto
production
ether
trione
Prior art date
Application number
Other languages
German (de)
Inventor
N V Organon
Original Assignee
Organon Nv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Organon Nv filed Critical Organon Nv
Publication of CH275617A publication Critical patent/CH275617A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J7/00Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J75/00Processes for the preparation of steroids in general

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Steroid Compounds (AREA)

Description

  

  Verfahren zur Herstellung von     11-Keto-progesteron.       Es wurde gefunden, dass man zu     11-Keto-          progesteron    gelangen kann, wenn     Pregnan-          3,11,20-trion        halogeniert    und aus dem erhal  tenen     Zwisehenprodukt    Halogenwasserstoff  abgespalten wird.  



  Den     Ausgangsstoff        kann    man unter an  derem gemäss dem Patent Nr. 273600 erhalten.  Das auf diese Weise erhaltene Produkt ist  identisch mit dem bereits bekannten     ll.-Keto-          progesteron.    Es soll therapeutische Verwen  dung finden oder als Zwischenprodukt zur  Herstellung therapeutisch verwertbarer Ver  bindungen dienen. .  



       Beispiel:     66 mg     Pregnan-3,11,20-trion    (erhalten z. B.  gemäss Patent     Nr.273600),    werden in 2 cm'  reinstem Eisessig gelöst, mit einem kleinen  Tropfen 30     0/0iger        Bromwasserstoff-Eisessig-          l.ösung    und hierauf allmählich und unter Um  schwenken mit der Lösung von 31,4 mg Brom  in 1     cm'    Eisessig versetzt, das fast momentan  aufgebraucht wird.

   Nach eingetretener     Ent-          färbung    wird im Vakuum bei 20      Badtem-          peratur    zur Trockne gedampft, der Rückstand  mit wenig Äther versetzt und im Vakuum  nochmals gut     getroeknet.    Nach erneuter Auf  nahme in     abs.    Äther scheiden sich bald zu       Drusen    vereinigte Nadeln ab, die nach dem  Waschen mit Äther bei 158 bis 160      sehmel-          zen.    Sie stellen das     4-Brompregnan-3,11,20-          trion    dar.  



  127 mg dieses     Bromids    werden mit 2     ein'          abs.        Py        ridin    6 Stunden unter     Rückfluss    ge-    kocht. Nach Eindampfen im Vakuum wird  der Rückstand in Äther gelöst, die Lösung  mit verdünnter Salzsäure,     Sodalösung    und  -Wasser gewaschen, über Natriumsulfat ge  trocknet und eingedampft. Nun destilliert.  man im     Molekularkolben    im Hochvakuum bei  170"     Badtemperatur.    Das Destillat     krystalli-          siert    aus Äther.

   Die erhaltenen Körnchen wer  den zur weiteren Reinigung über eine kleine  Säule von 1 g Aluminiumoxyd     ehromatogra-          phiert.    Die ersten mit     Benzol-Petroläther     (1 :4)     eluierbaren    Anteile geben noch unreine  Kristalle. Die weiteren mit     Benzol-Petroläther     sowie mit     abs.    Benzol     eluierbaren    Anteile  geben beim     Umkristallisieren    aus Äther farb  lose Stäbchen vom F.173 bis 175 .

           [al        D   <I>-</I>     +    243,50   6 0     146i    -     +   <B>2830-+60</B>    (c = 0,382 in     Aeeton).    Das aus     Corticosteron     bereitete     11-Keto-progesteron        (Helv.        Chim.     Acta,     Bd.    23, S. 684 [1940] der Formel  
EMI0001.0060     
    zeigt unter gleichen Bedingungen denselben  Schmelzpunkt und die gleiche     spez.    Drehung.  Die Mischprobe gibt keine Depression.



  Process for the production of 11-keto-progesterone. It has been found that 11-keto-progesterone can be obtained if pregnan-3,11,20-trione is halogenated and hydrogen halide is split off from the intermediate product obtained.



  The starting material can be obtained according to patent no. The product obtained in this way is identical to the already known III-keto-progesterone. It should find therapeutic use or serve as an intermediate for the production of therapeutically usable compounds. .



       Example: 66 mg of pregnane-3,11,20-trione (obtained e.g. according to patent no. 273600) are dissolved in 2 cm of the purest glacial acetic acid with a small drop of 30% hydrogen bromide-glacial acetic acid solution and then gradually and swirling around with the solution of 31.4 mg of bromine in 1 cm of glacial acetic acid, which is almost instantly used up.

   After the discoloration has occurred, the mixture is evaporated to dryness in vacuo at a bath temperature, a little ether is added to the residue and it is again thoroughly dried in vacuo. After renewed inclusion in abs. Aether, needles united to form drusen are soon separated which, after washing with ether, simmer at 158 to 160. They represent 4-bromopregnane-3,11,20-trione.



  127 mg of this bromide are combined with 2 an 'abs. Pyridine refluxed for 6 hours. After evaporation in vacuo, the residue is dissolved in ether, the solution is washed with dilute hydrochloric acid, soda solution and water, dried over sodium sulfate and evaporated. Well distilled. one in a molecular flask in a high vacuum at a bath temperature of 170 ". The distillate crystallizes from ether.

   The granules obtained are chromatographed on a small column of 1 g of aluminum oxide for further purification. The first fractions that can be eluted with benzene petroleum ether (1: 4) still give impure crystals. The other with benzene petroleum ether and with abs. When recrystallized from ether, benzene-elutable components give colorless rods from F.173 to 175.

           [al D <I> - </I> + 243.50 6 0 146i - + <B> 2830- + 60 </B> (c = 0.382 in aeeton). The 11-keto-progesterone prepared from corticosterone (Helv. Chim. Acta, Vol. 23, p. 684 [1940] of the formula
EMI0001.0060
    shows the same melting point and the same spec. Rotation. The mixed sample does not result in depression.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von 11- Iseto-progesteron, dadurch gekennzeichnet, dass Pregnan-3,11,20-trion halogeniert und aus dem erhaltenen Zwischenprodukt Halo genwasserstoff abgespalten wird. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass der Ausgangsstoff bro- miert und aus dem erhaltenen Zwischenpro dukt Bromwasserstoff abgespalten wird. PATENT CLAIM: Process for the production of 11-iseto-progesterone, characterized in that pregnane-3,11,20-trione is halogenated and hydrogen halide is split off from the intermediate product obtained. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the starting material is brominated and hydrogen bromide is split off from the intermediate product obtained.
CH275617D 1942-04-25 1942-04-25 Process for the production of 11-keto-progesterone. CH275617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH275617T 1942-04-25

Publications (1)

Publication Number Publication Date
CH275617A true CH275617A (en) 1951-05-31

Family

ID=4480322

Family Applications (1)

Application Number Title Priority Date Filing Date
CH275617D CH275617A (en) 1942-04-25 1942-04-25 Process for the production of 11-keto-progesterone.

Country Status (1)

Country Link
CH (1) CH275617A (en)

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