CH245272A - Process for the preparation of a new compound of the cyclopentanopolyhydrophenanthrene series. - Google Patents

Process for the preparation of a new compound of the cyclopentanopolyhydrophenanthrene series.

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Publication number
CH245272A
CH245272A CH245272DA CH245272A CH 245272 A CH245272 A CH 245272A CH 245272D A CH245272D A CH 245272DA CH 245272 A CH245272 A CH 245272A
Authority
CH
Switzerland
Prior art keywords
keto
split
methyl ester
acid
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Reichstein Tadeus Dr Prof
Original Assignee
Reichstein Tadeus Dr Prof
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 Reichstein Tadeus Dr Prof filed Critical Reichstein Tadeus Dr Prof
Publication of CH245272A publication Critical patent/CH245272A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J9/00Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of more than two carbon atoms, e.g. cholane, cholestane, coprostane
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J3/00Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by one carbon atom
    • 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
    • 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

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

Description

  

  Verfahren zur     HersteHung    einer neuen Verbindung der       Cyclopentanopolyliydrophenanthren-Reihe.       Es wurde gefunden,     dass    man zu einer im  Ring<B>C</B> ungesättigten Verbindung der     Cyclo-          pentanopolyllydroplienanthren-Reihe    gelan  gen kann, wenn man einen     3-Keto-4-halogen-          ätioelie,lansäure-metllylester,    der im Ring<B>C</B>  in     12-Stellung    einen zusammen mit einem  benachbarten Wasserstoffatom     abspaltbaren          Substituenten    aufweist, mit Mitteln behan  delt,

   die diesen     Substituenten    in     12-Stellun-          und    das Halogenatom in     4-Stellung    unter  Bildung<B>je</B> einer Doppelbindung abspalten.  



  Der     12ständige,    zusammen mit einem  benachbarten Wasserstoffatom     abspaltbare          Substituent    des     Ausgangsstoffes    kann bei  spielsweise eine durch     Carbonsäuren,    wie  Essig-,     Propion-    oder     Benzoesäure,    durch       Sulfons#Iuren,        Halogenwasserstoffsäuren    oder       Xant'hogensäuren    veresterte     Hydroxylgruppe     sein.  



  Die Abspaltung der genannten     Substi-          tuenten    in 12- und     4-Stellung    unter Bildung  <B>je</B> einer Doppelbindung kann mit den für  diese Reaktion an sich bekannten Mitteln er-    folgen. Beispielsweise     lässt    sich eine     ver-          esterte        Hydroxylgruppe    mit Alkalien, Erd  alkalien,     Carbonaten,    Salzen von     Carbon-          säuren,    organischen Basen, wie     Pyridin,        Di-          metliylanilin        usw.,    abspalten.

   An Stelle oder  in Kombination mit den genannten Mitteln       lässt    sieh auch erhöhte Temperatur     und/oder     verminderter Druck anwenden. Gegebenen  falls arbeitet man auch in Gegenwart indiffe  renter Gase. Statt direkt Halogenwasserstoff  abzuspalten, kann man das Halogen auch in  bekannter Weise durch einen     quaternären          Ammoniumrest    ersetzen und diesen abspalten.  



  Das neue     Verfalirensprodukt,        derj4,5;11,12-          3   <B>-</B>     Keto   <B>-</B>     ätiocholadiensäure   <B>-</B>     methylester,    bil  det farblose Kristalle und soll als Zwischen  produkt zur Herstellung therapeutisch wert  voller Produkte dienen.

      <I>Beispiel:</I>  <B>5</B> Teile<B>3 -</B>     Keto   <B>-</B> 4<B>-</B>     brom   <B>-</B> 12<B>-</B>     tosyloxy-          ü-tiocholansäure   <B>-</B>     methylester    (erhalten aus  <B>3 -</B>     Oxy   <B>-</B> 12<B>-</B>     acetoxy   <B>-</B>     ätiocholansäure   <B>-</B> methyl-           ester    durch Oxydation mit Chromsäure  in Eisessig bei Zimmertemperatur,

       Ver-          seifung    des so entstandenen Produktes  zur freien<B>3 -</B>     Keto   <B>-</B> 12<B>-</B>     oxy   <B>-</B>     ätiocholansäure,     Umwandlung durch Behandlung mit     Diazo-          methan,    dann mit     Tos-"lehlorid    in     Pyridin     zum<B>3 -</B>     Keto   <B>-</B> 12<B>-</B>     tosylöxy   <B>-</B>     ät-ioeholausäure-          methylester,    der schliesslich in Eisessig mit       Brant'umgesetzt    wird)

   werden<B>3</B> Stunden mit  200     Tei   <B>.</B>     len        Collidin    unter     Rüel,-fluss    gekocht.    Das     Collidin    wird im Vakuum     abdestilliert,     der     Riielzstand    in Äther aufgenommen, die       ätherisehe        Lösunu    mit verdünnter Salzsäure,       Sodalösung    und Wasser gewaschen, getrock  net und eingedampft.

   Das erhaltene hell  braune Rohprodukt wird zweckmässig     ehro-          matographiseh    über Aluminiumoxyd     gerei-          nio,t    und liefert den     A4,5;11,12-3-Keto-ät#io-          choladiensäure-met,hylester    der Formel  
EMI0002.0032     
    in Form farbloser Kristalle.  



  An Stelle von     Collidin    kann z. B. auch       Pvridin    verwendet werden.



  Process for the preparation of a new compound of the Cyclopentanopolyliydrophenanthren series. It has been found that a compound of the cyclopentanopolyllydroplienanthrene series which is unsaturated in the ring can be obtained if a 3-keto-4-halogenoelie, lanoic acid metllyl ester in the ring <B> C </B> has a substituent which can be split off together with an adjacent hydrogen atom in the 12-position, treated with agents,

   which split off these substituents in the 12-position and the halogen atom in the 4-position with the formation of a double bond each.



  The 12-position substituent of the starting material which can be split off together with an adjacent hydrogen atom can be, for example, a hydroxyl group esterified by carboxylic acids, such as acetic, propionic or benzoic acid, by sulfonic acids, hydrohalic acids or xanthogen acids.



  The abovementioned substituents in the 12- and 4-position can be split off with the formation of a double bond each using the means known per se for this reaction. For example, an esterified hydroxyl group can be split off with alkalis, alkaline earths, carbonates, salts of carboxylic acids, organic bases such as pyridine, dimethylaniline, etc.

   Instead of or in combination with the agents mentioned, increased temperature and / or reduced pressure can also be used. If necessary, one also works in the presence of inert gases. Instead of splitting off hydrogen halide directly, the halogen can also be replaced in a known manner by a quaternary ammonium radical and this can be split off.



  The new process product, thej4,5; 11,12- 3 <B> - </B> Keto <B> - </B> etiocholadienoic acid <B> - </B> methyl ester, forms colorless crystals and is intended as an intermediate product serve to manufacture therapeutically valuable products.

      <I> Example: </I> <B> 5 </B> parts <B> 3 - </B> Keto <B> - </B> 4 <B> - </B> brom <B> - </B> 12 <B> - </B> tosyloxy- ü-thiocholanic acid <B> - </B> methyl ester (obtained from <B> 3 - </B> Oxy <B> - </B> 12 < B> - </B> acetoxy <B> - </B> etiocholanic acid <B> - </B> methyl ester by oxidation with chromic acid in glacial acetic acid at room temperature,

       Saponification of the resulting product to free <B> 3 - </B> Keto <B> - </B> 12 <B> - </B> oxy <B> - </B> etiocholanic acid, conversion by treatment with diazo methane, then with tosyl chloride in pyridine to <B> 3 - </B> Keto <B> - </B> 12 <B> - </B> tosylöxy <B> - </B> ät-ioeholausäure- methyl ester, which is finally converted into glacial acetic acid with Brant')

   are boiled for <B> 3 </B> hours with 200 parts <B>. </B> len Collidin under rumble, flow. The collidine is distilled off in vacuo, the residue taken up in ether, the ethereal solution washed with dilute hydrochloric acid, soda solution and water, dried and evaporated.

   The light brown crude product obtained is expediently purified by chromatography on aluminum oxide and yields the A4.5; 11,12-3-keto-ethiocholadienoic acid methyl ester of the formula
EMI0002.0032
    in the form of colorless crystals.



  Instead of collidine, for. B. Pvridine can also be used.

 

Claims (1)

PATENTANSPR-UCH: Verfahren zur Herstellung einer im Rilio, C ungesättigten Verbindung der Cyclopen- tanopolyhydrophenanthren-Reihe, dadurch ge kennzeichnet, dass man einen 3-Keto-4- halo(Ten-äfiocholansäure-methylester, der im Ring<B>C</B> in 12-Siellung einen zusammen mit einem benachbarten Wasserstoffatom ab- spaltbaren Substituenten aufweist, mit Mit teln behandelt, PATENT CLAIM: A process for the production of a compound of the cyclopentanopolyhydrophenanthrene series which is unsaturated in the Rilio, C, characterized in that a 3-keto-4-halo (methyl ten-afiocholanate, which is in the <B> C <ring / B> has a substituent which can be split off together with a neighboring hydrogen atom in 12-separation, treated with agents, die diesen Substituenten in 12-Stellung und das Halogenatom in 4-Stel- lung unter Bildung<B>je</B> einer Doppelbindung abspalten. Das neue Verfahrensprodukt, der A4,5;11,12- ä <B>-</B> Keto <B>-</B> ätiocholadiensäure- <B>-</B> methylester, bil det farblose Kristalle und soll als Zwischen produkt zur Herstellung therapeutisch wert voller Produkte dienen. which split off these substituents in the 12-position and the halogen atom in the 4-position with the formation of a double bond each. The new process product, the A4,5; 11,12- ä <B> - </B> Keto <B> - </B> etiocholadienoic acid <B> - </B> methyl ester, forms colorless crystals and is said to be Intermediate product used to manufacture therapeutically valuable products. UNTERANSPRüC-HE: <B>1.</B> Veifahren naeh Patentanspruch,<B>da-</B> durch egekennzeichnet, dass man als Aus- "ano,sstoff einen a'-Keto-4-brom-I'-)-tosyloxy- ätiocholansäure-methylester verwendet. SUB-CLAIM: <B> 1. </B> Proceeding according to patent claim, <B> da- </B> characterized by e, that an a'-keto-4-bromine-I ' -) - tosyloxy- ätiocholansäure-methyl ester used. 'L Verfahren nach Patentanspruch und Unteranspruch<B>1,</B> dadurch gekennzeichnet, dpss man den Aus--an-sstoff mit Collidin er- hitzt. The method according to claim and dependent claim <B> 1 </B> characterized in that the off-substance is heated with collidine.
CH245272D 1942-01-28 1946-01-10 Process for the preparation of a new compound of the cyclopentanopolyhydrophenanthrene series. CH245272A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH240789T 1942-01-28
CH245272T 1946-01-10

Publications (1)

Publication Number Publication Date
CH245272A true CH245272A (en) 1946-10-31

Family

ID=25728537

Family Applications (1)

Application Number Title Priority Date Filing Date
CH245272D CH245272A (en) 1942-01-28 1946-01-10 Process for the preparation of a new compound of the cyclopentanopolyhydrophenanthrene series.

Country Status (1)

Country Link
CH (1) CH245272A (en)

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