CH496664A - Dibenzosuberene derivs - Google Patents

Dibenzosuberene derivs

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Publication number
CH496664A
CH496664A CH371869A CH371869A CH496664A CH 496664 A CH496664 A CH 496664A CH 371869 A CH371869 A CH 371869A CH 371869 A CH371869 A CH 371869A CH 496664 A CH496664 A CH 496664A
Authority
CH
Switzerland
Prior art keywords
sep
alkyl
alkoxy
opt
groups
Prior art date
Application number
CH371869A
Other languages
German (de)
Inventor
Viterbo Rene
Mastursi Michele
Lembo Sabino
Original Assignee
Richardson Merrell Spa
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 Richardson Merrell Spa filed Critical Richardson Merrell Spa
Priority claimed from CH978366A external-priority patent/CH493467A/en
Publication of CH496664A publication Critical patent/CH496664A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D295/00Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/04Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
    • C07D295/10Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by doubly bound oxygen or sulphur atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D295/00Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/04Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
    • C07D295/08Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D295/00Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/04Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
    • C07D295/12Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly or doubly bound nitrogen atoms

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

(A) Dibenzosuberene derivs. - (I) R1 and R2 = (1-4 C) alkyl, or together = (CH2)2, forming an opt. subst. piperazyl ring with the 2N atoms and (CH2)n, (provided n = 2); R3 = H, alkyl, -CH2CH=CH2, -CH2C triple bond CH, -CH2CH CH2, -CH2CH2CN, -CH2CH2OEt, ethylacetamide, alkoxy, carbalkoxy, hydroxyalkyl, Ph opt. subst. by Cl or OMe, opt. substd. PhCH2, aralkyl, or an ester or ether residue. - R4 = H, halogen, lower alkyl, MeO, NH2, NHalkyl, N(alkyl)2, CF3 or other substit. - X = CO or CHOH. - (B) Acid addn. and quaternary ammonium salts of (I). - Hypotensives, muscle relaxants, sedatives, local anaesthetics, analgesics, antipyretics, spasmolytics, etc.

Description

  

  Verfahren zur Herstellung von Dibenzosuberenderivaten    Die vorliegende Erfindung betrifft ein Verfahren  zur Herstellung von Dibenzosuberenderivaten der For  mel  
EMI0001.0000     
    worin Y die Gruppen  
EMI0001.0001     
    bedeutet, worin R1 und R2 Alkylgruppen mit 1 bis  4 C-Atomen sind, Rund R,;

   Wasserstoff, Alkyl, die  Gruppe -CH2CH = CH2-, -CH2C - CH,  
EMI0001.0002     
    Cyanoäthyl, Chlorphenyl, Äthoxyäthyl, N-Äthyl,  Carbamoylmethyl, Phenyl, Benzyl, Methoxyphenyl,  Alkoxy, Hydroxyalkyl, Carbäthoxy oder     Carbäthoxy-          äthyl    bedeuten, R.4 Wasserstoff, Halogen, niederes Alkyl,  Alkoxy, Amino, Monoalkylamino, Dialkylamino oder  Trifluormethyl ist, X die >CHOH-Gruppe bedeutet  und n eine ganze Zahl von 1-4 ist und die     Alkyl-          und    Alkoxygruppen 1-4 C-Atomen aufweisen.  



  Die erhaltenen Verbindungen können auch in die  Säureadditionssalze und quaternären Ammoniumsalze  übergeführt werden.  



  Verbindungen der oben angegebenen Formel sind  wegen ihrer hohen pharmakologischen Aktivität insbe-    sondere als therapeutische Mittel nützlich. Die erfin  dungsgemäss erhältlichen     Verbindungen    sind tatsächlich  pharmakologisch aktiv, insbesondere als     antihyperten-          sive    Mittel, Sedativa, Myorelaxantia, Lokalanästhetika,  Analgetika, Antipyretika und Spasmolytika oder bei  anderen physiologischen Wirkungen.  



  Die neuen Verbindungen stellen Enamine, das heisst  aαB-ungesättigte Amine dar. Diese Enamine sind beson  dere Verbindungen und werden therapeutisch als eine  getrennte Klasse von stickstoffhaltigen Verbindungen  und nicht als einfache Aminderivate betrachtet. Aus  führliche Übersichten befassen sich mit Enaminen  [vergl. z. B. Szmuskowicz, Jr., Enamines, Seiten 1-110  in: Raphael R. A., Taylor E. C. und Wynberg H.,  Advances in Organic Chemistry: Methods and Results,  Bd. 4, Interscience Publishers, New York (1963)], worin  Struktur sowie Reaktivität dieser Verbindungen be  schrieben sind.  



  Die Enamine erleiden im allgemeinen leicht eine  hydrolytische Spaltung in saurem Medium, die zur Bil  dung einer Ketoverbindung und zur Abspaltung der  Amingruppierung führt. Eine weitere besondere Eigen  schaft der Enamine ist die Leichtigkeit, mit welcher sie  alkyliert oder acyliert werden können. Eine solche  Alkylierung oder Acylierung könnte eine vorbereitende  Stufe im Metabolismus der erfindungsgemäss erhält  lichen Verbindungen sein.  



  Die neuen Verbindungen werden erfindungsgemäss  hergestellt, indem man die entsprechende     5-Ketover-          bindung,    in welcher X = >C = O ist, reduziert. Die  5-Ketoausgangsverbindungen können nach der Schwei  zer Patentschrift Nr. 493 497 hergestellt werden. Vor  zugsweise wird die Reduktion mit NHBH4 oder anderen  geeigneten Reduktionsmitteln, wie z. B.     Aluminium-          allkoxiden    und Alkohol in Benzol oder Toluollösungen,  ausgeführt (Meerwein-Pondorff-Reduktion), wobei die  entsprechenden     5-ol-Verbindungen    entstehen, in wel  chen X =     >CHOH    ist.  



  Aus Werten, die bei synthetisierten und geprüften  Verbindungen erhalten werden, konnte festgestellt wer-      den, dass oral verabreichte Dosen im Bereich von 0,1  bis 0,5 mg/kg Körpergewicht eine ausgeprägte     hypo-          tensive    Wirkung ergeben. Bei Dosen im Bereich von 1  bis 15 mg/kg wird eine ausgeprägte Reduktion der  spontanen Beweglichkeit, Myorelaxation, Lokalanästhe  sie, Analgesie, antiinflammatorische Wirkung, Erniedri  gung der Körpertemperatur und antipyretische Akti  vität beobachtet.

   In vitro kann eine ausgeprägte spasmo  lytische Aktivität festgestellt     werden.-          Um    die Art einiger der Substituenten, die an den  Grundteil gebunden sind, näher zu zeigen, werden die  folgenden Tabellen angegeben:    <I>Tabelle 1</I>  
EMI0002.0004     
  
EMI0002.0005     
  
    X <SEP> R4 <SEP> R3 <SEP> R5 <SEP> Schmelzpunkt <SEP> 0 <SEP> C
<tb>  CHOH <SEP> H <SEP> COOC2H5 <SEP> H <SEP> 161-163
<tb>  CHOH <SEP> H <SEP> 6H5 <SEP> H <SEP> 213-214
<tb>  CHOH <SEP> H <SEP> CH2C6H5 <SEP> H <SEP> 179-181       Die pharmakologische Aktivität einiger der folgen  den     Verbindungen    wird in den nachfolgenden Ta  bellen gezeigt:

      <I>Tabelle 11</I>  Spontane Beweglichkeit bei der Maus  (Methode nach Dews)  
EMI0002.0007     
  
    Verbindung <SEP> Verabreichungs- <SEP> Dosierung <SEP> % <SEP> Verminderung
<tb>  von <SEP> weg <SEP> Dosierung <SEP> der <SEP> Durchläufe
<tb>  Beispiel <SEP> 1 <SEP> per <SEP> os <SEP> 1/5 <SEP> LD50 <SEP> -73       <I>Tabelle 111</I>  Hypotensive Wirkung bei Katzen  
EMI0002.0008     
  
    Verbindung <SEP> Verabreichungs- <SEP> % <SEP> Druck  von <SEP> weg <SEP> Dosierung <SEP> verminderung
<tb>  Beispiel <SEP> 1 <SEP> per <SEP> os <SEP> 1 <SEP> mg/kg <SEP> 15       <I>Beispiel 1</I>       N-[5H-Dibenzo-(a,d)-cyclohepten-5-ol-11-yl]-          N'-carbäthoxypiperazin     0,71g Carbäthoxypiperazin und 1 g     5H-10,11-Di-          hydrodibenzo-(a,d)-cyclohepten-5,

  10-dion    werden in  30 ml Toluol gelöst und 16 Stunden lang am Rückfluss  erhitzt und die abgekühlte Lösung mit Wasser ge  waschen, über wasserfreiem Na2S04 getrocknet und ein  gedampft. Der ölige Rückstand wird in 60 ml Methanol  gelöst und langsam zu einer .Suspension von 1 g NaBH4  in 10 ml Methanol zugefügt. Das Gemisch     wird    1 Stunde  lang bei Zimmertemperatur stehengelassen, sorgfältig    auf zerstossenes Eis gegossen und mit Benzol     extrahiert.     Dann wäscht man die organische Schicht mit Wasser bis  zur Neutralität und trocknet über wasserfreiem Na2SO4  und anschliessend destilliert man das Lösungsmittel.

   Der  feste Rückstand (0,9 g) wird aus Äthanol     kristallisiert     und hat einen     Schmelzpunkt    von     161-163'C.     



  UV-Spektrum in Äthanol:  lmaY = 295 m  s = 13 800.  <I>Beispiel 2</I>       N-[5H-Dibenzo-(a,d)-cyclohepten-5-o1-11-y1]-          N-Benzylpiperazin     5 g     N-[5H-Dibenzo-(a,d)-cyclohepten-5-on-11-y1]-N'-          benzylpiperazin,    gelöst in 100 ml Methanol und 50 ml  Tetrahydrofuran, werden tropfenweise zu der mit Eis  wasser gekühlten Lösung von 4 g NaBH4 in 100 ml  Methanol zugefügt. Man lässt die Lösung bei Zimmer  temperatur 12 Stunden lang stehen und giesst vorsichtig  auf zerstossenes Eis. Der weisse feste Niederschlag wird  gesammelt, in Äther gelöst und mit Wasser bis zur  Neutralität gewaschen. Man trocknet die organische  Schicht über wasserfreiem Na2SO4 und dampft ein.

   Der  feste Rückstand (3,8 g) wird aus Äthanol kristallisiert  und hat einen     Schmelzpunkt    von     179-1811C.     



  UV-Spektrum     in    Äthanol:  lmax = 298 m  a = 13 200.       Beispiel   <I>3</I>  N-[5H     Dibenzo-(a,d)-cyclohepten-5-ol-11-yl]-          N'-phenylpiperazin     Zu einer Lösung von 10g     N-[5H-Dibenzo-(a,d)-          cyclohepten-5-on-11-yl]-N'-phenylpiperazin    in 80 ml  Methanol und 100 ml Tetrahydrofuran werden 7,5 g  NaBH4 in kleinen Anteilen zugefügt Man hält die Tem  peratur des     Reaktionsgemisches    unterhalb 5  C, bis alles  NaBH4 zugefügt ist, und dann wird über Nacht bei  Zimmertemperatur gehalten. Man giesst das Gemisch  vorsichtig auf zerstossenes Eis.

   Die ausgefallene Verbin  dung wird abfiltriert und in Chloroform gelöst, und man  extrahiert die organische Lösung mit Wasser, trocknet  über wasserfreiem Na2S04 und dampft bei 40  C ein  (Wasserstrahlpumpe). Der feste weisse Rückstand (8 g)  wird aus     CHCl3-Benzol    umkristallisiert und hat einen       Schmelzpunkt    von 213-214  C.  
EMI0002.0033     
  
    UV-Spektrum <SEP> in <SEP> Äthanol:
<tb>  Am" <SEP> = <SEP> 248 <SEP> m,u <SEP> <I>E <SEP> =</I> <SEP> 21<B>800;</B>
<tb>  Am" <SEP> = <SEP> 300 <SEP> m,y <SEP> E <SEP> = <SEP> 14 <SEP> 500.



  Process for the preparation of dibenzosuberene derivatives The present invention relates to a process for the preparation of dibenzosuberene derivatives of the formula
EMI0001.0000
    where Y is the groups
EMI0001.0001
    denotes in which R1 and R2 are alkyl groups having 1 to 4 carbon atoms, R,;

   Hydrogen, alkyl, the group -CH2CH = CH2-, -CH2C - CH,
EMI0001.0002
    Cyanoethyl, chlorophenyl, ethoxyethyl, N-ethyl, carbamoylmethyl, phenyl, benzyl, methoxyphenyl, alkoxy, hydroxyalkyl, carbethoxy or carbethoxyethyl mean R.4 is hydrogen, halogen, lower alkyl, alkoxy, amino, monoalkylamino, dialkylamethyl or trifluoromethyl X denotes the> CHOH group and n is an integer from 1-4 and the alkyl and alkoxy groups have 1-4 carbon atoms.



  The compounds obtained can also be converted into the acid addition salts and quaternary ammonium salts.



  Compounds of the formula given above are particularly useful as therapeutic agents because of their high pharmacological activity. The compounds obtainable according to the invention are actually pharmacologically active, in particular as antihypertensive agents, sedatives, myorelaxants, local anesthetics, analgesics, antipyretics and antispasmodics or in the case of other physiological effects.



  The new compounds are enamines, i.e., aαB-unsaturated amines. These enamines are special compounds and are therapeutically considered as a separate class of nitrogen-containing compounds and not as simple amine derivatives. Extensive reviews deal with enamines [cf. z. B. Szmuskowicz, Jr., Enamines, pp. 1-110 in: Raphael RA, Taylor EC, and Wynberg H., Advances in Organic Chemistry: Methods and Results, Vol. 4, Interscience Publishers, New York (1963)] in which Structure and reactivity of these compounds are be written.



  The enamines generally easily undergo hydrolytic cleavage in an acidic medium, which leads to the formation of a keto compound and the cleavage of the amine group. Another special property of enamines is the ease with which they can be alkylated or acylated. Such an alkylation or acylation could be a preparatory step in the metabolism of the compounds obtainable according to the invention.



  The new compounds are produced according to the invention by reducing the corresponding 5-keto compound in which X => C = O. The 5-keto starting compounds can be prepared according to Swiss Patent No. 493 497. Preferably, the reduction with NHBH4 or other suitable reducing agents, such as. B. aluminum alkoxides and alcohol in benzene or toluene solutions, executed (Meerwein-Pondorff reduction), whereby the corresponding 5-ol compounds are formed in which X => CHOH.



  From values obtained with synthesized and tested compounds, it was possible to establish that orally administered doses in the range from 0.1 to 0.5 mg / kg body weight produce a pronounced hypotensive effect. At doses in the range from 1 to 15 mg / kg, a marked reduction in spontaneous mobility, myorelaxation, local anesthesia, analgesia, anti-inflammatory effects, lowering of body temperature and antipyretic activity is observed.

   A pronounced spasmolytic activity can be detected in vitro. In order to show in more detail the nature of some of the substituents attached to the base, the following tables are given: <I> Table 1 </I>
EMI0002.0004
  
EMI0002.0005
  
    X <SEP> R4 <SEP> R3 <SEP> R5 <SEP> Melting point <SEP> 0 <SEP> C
<tb> CHOH <SEP> H <SEP> COOC2H5 <SEP> H <SEP> 161-163
<tb> CHOH <SEP> H <SEP> 6H5 <SEP> H <SEP> 213-214
<tb> CHOH <SEP> H <SEP> CH2C6H5 <SEP> H <SEP> 179-181 The pharmacological activity of some of the following compounds is shown in the tables below:

      <I> Table 11 </I> Spontaneous mobility in the mouse (Dews method)
EMI0002.0007
  
    Compound <SEP> administration <SEP> dosage <SEP>% <SEP> reduction
<tb> away from <SEP> <SEP> Dosing <SEP> of the <SEP> runs
<tb> Example <SEP> 1 <SEP> per <SEP> os <SEP> 1/5 <SEP> LD50 <SEP> -73 <I> Table 111 </I> Hypotensive effect in cats
EMI0002.0008
  
    Connection <SEP> administration <SEP>% <SEP> pressure away from <SEP> <SEP> dosage <SEP> reduction
<tb> Example <SEP> 1 <SEP> per <SEP> os <SEP> 1 <SEP> mg / kg <SEP> 15 <I> Example 1 </I> N- [5H-dibenzo- (a, d ) -cyclohepten-5-ol-11-yl] - N'-carbäthoxypiperazin 0.71g carbethoxypiperazine and 1 g 5H-10,11-dihydrodibenzo- (a, d) -cyclohepten-5,

  10-dione is dissolved in 30 ml of toluene and refluxed for 16 hours and the cooled solution is washed with water, dried over anhydrous Na 2 SO 4 and evaporated. The oily residue is dissolved in 60 ml of methanol and slowly added to a suspension of 1 g of NaBH4 in 10 ml of methanol. The mixture is left at room temperature for 1 hour, carefully poured onto crushed ice and extracted with benzene. The organic layer is then washed with water until it is neutral and dried over anhydrous Na2SO4 and then the solvent is distilled.

   The solid residue (0.9 g) is crystallized from ethanol and has a melting point of 161-163 ° C.



  UV spectrum in ethanol: lmaY = 295 ms = 13,800. Example 2 N- [5H-dibenzo- (a, d) -cyclohepten-5-01-11-y1] - N-benzylpiperazine 5 g of N- [5H-dibenzo- (a, d) -cyclohepten-5-one-11-y1] -N'-benzylpiperazine, dissolved in 100 ml of methanol and 50 ml of tetrahydrofuran, are added dropwise to the solution cooled with ice-water of 4 g of NaBH4 in 100 ml of methanol was added. The solution is left to stand at room temperature for 12 hours and is carefully poured onto crushed ice. The white solid precipitate is collected, dissolved in ether and washed with water until neutral. The organic layer is dried over anhydrous Na2SO4 and evaporated.

   The solid residue (3.8 g) is crystallized from ethanol and has a melting point of 179-1811C.



  UV spectrum in ethanol: lmax = 298 ma = 13,200. Example <I> 3 </I> N- [5H dibenzo- (a, d) -cyclohepten-5-ol-11-yl] - N'-phenylpiperazine 7.5 g of NaBH4 are added in small portions to a solution of 10 g of N- [5H-dibenzo- (a, d) - cyclohepten-5-on-11-yl] -N'-phenylpiperazine in 80 ml of methanol and 100 ml of tetrahydrofuran The temperature of the reaction mixture is kept below 5 ° C. until all the NaBH4 has been added, and the mixture is then kept at room temperature overnight. The mixture is carefully poured onto crushed ice.

   The precipitated compound is filtered off and dissolved in chloroform, and the organic solution is extracted with water, dried over anhydrous Na 2 SO 4 and evaporated at 40 ° C. (water jet pump). The solid white residue (8 g) is recrystallized from CHCl3-benzene and has a melting point of 213-214 C.
EMI0002.0033
  
    UV spectrum <SEP> in <SEP> ethanol:
<tb> Am "<SEP> = <SEP> 248 <SEP> m, u <SEP> <I> E <SEP> = </I> <SEP> 21 <B> 800; </B>
<tb> Am "<SEP> = <SEP> 300 <SEP> m, y <SEP> E <SEP> = <SEP> 14 <SEP> 500.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von Dibenzosuberenderi- vaten der Formel EMI0002.0036 worin Y die Gruppen EMI0002.0037 bedeutet, worin R1 und R2 Alkylgruppen mit 1-4 C- Atomen sind, R3 und R5 Wasserstoff, Alkyl, -CH2CH = CH2, -CHIC = CH, EMI0003.0002 Cyanoäthyl, Chlorphenyl, Äthoxyäthyl, N -Äthyl, Carbamoylmethyl, Phenyl, Benzyl, Methoxyphenyl, Alkoxy, Hydroxyalkyl, Carbäthoxy oder Carbäthoxy- äthyl bedeuten, R4 Wasserstoff, Halogen, niederes Alkyl, Alkoxy, Amino, Monoalkylamino, Dialkylamino oder Trifluormethyl ist, PATENT CLAIM Process for the production of dibenzosuber derivatives of the formula EMI0002.0036 where Y is the groups EMI0002.0037 means where R1 and R2 are alkyl groups with 1-4 C atoms, R3 and R5 are hydrogen, alkyl, -CH2CH = CH2, -CHIC = CH, EMI0003.0002 Cyanoethyl, chlorophenyl, ethoxyethyl, N -ethyl, carbamoylmethyl, phenyl, benzyl, methoxyphenyl, alkoxy, hydroxyalkyl, carbethoxy or carbethoxyethyl mean, R4 is hydrogen, halogen, lower alkyl, alkoxy, amino, monoalkylamino, dialkylamino or trifluoromethyl X die >CHOH-Gruppe be deutet und n eine ganze Zahl von 1J4. ist und die Alkyl- und Alkoxygruppen 1-4 C-Atome aufweisen, dadurch gekennzeichnet, dass man die entsprechende 5-Ketoverbindung, in welcher X = >C = O ist, redu ziert. UNTERANSPRÜCHE 1. Verfahren nach Patentanspruch, dadurch gekenn zeichnet, dass man die Reduktion unter Verwendung eines Alkaliborhydrids oder eines Aluminiumalkoxyds ausführt. 2. Verfahren nach Unteranspruch 1, dadurch ge kennzeichnet, dass das Reduktionsmittel Natriumbor- hydrid ist. 3. X denotes the> CHOH group and n denotes an integer from 1 to 4. and the alkyl and alkoxy groups have 1-4 carbon atoms, characterized in that the corresponding 5-keto compound in which X => C = O is reduced. SUBClaims 1. The method according to claim, characterized in that the reduction is carried out using an alkali borohydride or an aluminum alkoxide. 2. The method according to dependent claim 1, characterized in that the reducing agent is sodium borohydride. 3. Verfahren nach Patentanspruch, dadurch gekenn zeichnet, dass man die erhaltene Verbindung in das ent sprechende Säureadditionssalz oder quaternäre Ammo- niumsalz überführt. Process according to patent claim, characterized in that the compound obtained is converted into the corresponding acid addition salt or quaternary ammonium salt.
CH371869A 1965-07-06 1966-07-06 Dibenzosuberene derivs CH496664A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48657865A 1965-07-06 1965-07-06
CH978366A CH493467A (en) 1965-07-06 1966-07-06 Dibenzosuberene derivs

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CH496664A true CH496664A (en) 1970-09-30

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CH371869A CH496664A (en) 1965-07-06 1966-07-06 Dibenzosuberene derivs

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