CH419125A - Process for the preparation of new carbocyclic compounds - Google Patents

Process for the preparation of new carbocyclic compounds

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Publication number
CH419125A
CH419125A CH1497262A CH1497262A CH419125A CH 419125 A CH419125 A CH 419125A CH 1497262 A CH1497262 A CH 1497262A CH 1497262 A CH1497262 A CH 1497262A CH 419125 A CH419125 A CH 419125A
Authority
CH
Switzerland
Prior art keywords
dihydro
anthracene
acid
solution
compounds
Prior art date
Application number
CH1497262A
Other languages
German (de)
Inventor
Ernst Dr Jucker
Anton Dr Ebnoether
Andre Dr Stoll
Original Assignee
Sandoz Ag
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.)
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Publication date
Application filed by Sandoz Ag filed Critical Sandoz Ag
Priority to CH1497262A priority Critical patent/CH419125A/en
Priority to GB4680063A priority patent/GB1060466A/en
Priority to DE19631470259 priority patent/DE1470259A1/en
Priority to DK594463A priority patent/DK105025C/en
Priority to ES0294657A priority patent/ES294657A1/en
Priority to AT1028063A priority patent/AT243266B/en
Priority to FR967751A priority patent/FR3223M/en
Publication of CH419125A publication Critical patent/CH419125A/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D211/00Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/06Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
    • C07D211/08Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/445Non condensed piperidines, e.g. piperocaine
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D211/00Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/68Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
    • C07D211/70Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Hydrogenated Pyridines (AREA)

Description

  

      Verfahren        zur    Herstellung neuer     carbocyclischer    Verbindungen    Die vorliegende Erfindung betrifft ein Verfahren  zur Herstellung von neuen     carbocyclischen    Verbin  dungen der Formel I,  
EMI0001.0005     
    worin     R1    und     R2    je     eine    niedere     Alkyl-    oder     Alkenyl-          gruppe    und     R3    eine niedere     Alkylgruppe    bedeutet,  dadurch     gekennzeichnet,

  dass    man aus Verbindungen  der Formel     1I     
EMI0001.0016     
    Wasser abspaltet.  



  Diese Wasserabspaltung kann beispielsweise durch  Erhitzen mit     konzentrierten    Säuren oder andern  wasserabspaltenden     Mitteln,    wie z. B.     Thionylchlorid,          Phosphoroxychlorid,    Zinkchlorid oder Essigsäure  anhydrid, ausgeführt     werden.    Die Wasserabspaltung  wird in Lösung,     vorzugsweise    in Eisessig durchgeführt.  



  Das Verfahren der vorliegenden     Erfindung    kann  beispielsweise wie folgt     ausgeführt    werden. Eine Ver-         bindung    der Formel     IV        wird,    in     einem    Gemisch von  Eisessig     uni,    Salzsäure gelöst und unter     Rückfluss     erhitzt. Nach     erfolgter    Umsetzung wird die Lösung  bei vermindertem Druck     eingedampft    und der Rück  stand durch Umkristallisation gereinigt.  



  Die     Ausgangsverbindungen    der Formel     II    können  beispielsweise wie folgt     dargestellt    werden:  Mit Jod aktivierte     Magnesiumspäne    werden mit       wasserfreiem        Tetrahydrofuran        überschichtet        und    die       Lösung    einer     Verbindung    der     Formel;

          III,     
EMI0001.0045     
    worin X ein Chlor-, Brom- oder Jodatom     (bedeutet,     in wasserfreiem, organischem     Lösungsmittel        zuge-          tropft,    wobei die Reaktion durch Zusatz von wenig       Äthylenbromid    in Gang gebracht werden kann.

   Die       Reaktion    wird durch     Erwärmen    zu Ende geführt und  zur     erkalteten    Lösung der     Grignard-Verbindung    der  Formel IV,  
EMI0001.0055     
         gelöst    in wasserfreiem organischem Lösungsmittel,       zugetropft.    Als organisches Lösungsmittel kann z. B.       Tetrahydrofuran,        ,Äther    oder     Methylenchlorid    ver  wendet werden.

   Das Reaktionsgemisch wird zur     Ver-          vollständigung    der Reaktion     zweckmässigerweise     einige     Zeit    zum Sieden erhitzt, anschliessend     hydroly-          siert    und die organische Schicht nach an sich bekann  ten Methoden aufgearbeitet.  



  Die     erfindungsgemäss        hergestellten    Verbindungen  der Formel 1 sind basische, bei Raumtemperatur ölige      kristalline Verbindungen, die mit anorganischen oder  organischen Säuren     beständige,    bei Raumtemperatur       kristallisierte        Salze    bilden.

   Zur     Salzbildung    können  unter anderem die folgenden Säuren verwendet wer  den:     Salzsäure,        Bromwasserstoffsäure,        Jodwasserstoff-          säure,    Schwefelsäure, Zitronensäure, Weinsäure,       Bernsteinsäure,        Maleinsäure,    Apfelsäure, Essigsäure,       Benzoesäure,        Fumarsäure,        Gallussäure,        Hexahydro-          b.enzoesäure,        Methansulfonsäure        und;    Phosphorsäure.  



  Die neuen     Verbindungen    besitzen äusserst     wert-          volle        pharmakologische        Eigenschaften;    so zeichnen sie  sich besonders durch eine starke     histaminhemmende     Wirkung aus und sollen     deshalb        in    der     Therapie    als       Antihistaminnika    verwendet werden.

   Ein besonderer       Vorteil    der     erfindungsgemäss        erhaltenen    Verbindun  gen liegt darin, dass bei ihrer     Anwendung    keine uner  wünschten     Nebenwirkungen,    wie z. B.     Trockenheit    im  Mund oder Müdigkeit, auftreten.

   Sie entfalten eine  starke hustenhemmende und     bronchodilatierende    Wir  kung und     können    daher     als    Heilmittel zur Behandlung  von     Asthma,        Bronchialkatarrh    und Husten verschie  dener Genese Verwendung finden.     Schliesslich    ver  fügen sie auch noch über eine     serotoninhemmende     und     antieholinergische    Wirkung. Einige     Vertreter     dieser Reihe sind auch sedativ wirksam.  



  Die     Verbindungen        können    als     Arzneimittel    allein  oder in entsprechenden     Arzneiformen    für     enterale     oder     parenterale    Verabreichung verwendet werden.       Zwecks    Herstellung .geeigneter     Arzneiformen    werden  diese mit     anorganischen    oder     organischen,    pharma  kologisch     indifferenten        Hilfsstoffen    verarbeitet. Als       Hilfsstoffe    werden verwendet z. B.  



  für Tabletten und Dragees:     Milchzucker,    Stärke,  Talk,     Sterarinsäure    usw.;       für    Sirupe:     Rohrzucker-,        Invertzucker-,        Glukose-          lösungen    u. a.;  für     Injektionspräparate:    Wasser, Alkohole,     Gly-          cerol,        pflanzliche    öle u. dgl.;  für     Suppositorien:    natürliche oder     gehärtete    Öle  und Wachse u. a. m.  



       für    Salben, Suspensionen und Emulsionen: an  organische oder     organische        lipo-    oder     hydrophile    Ver  bindungen, Paraffin,     Vaselin,        Alginate,    Zellulose  derivate,     Polyoxyäthylenderivate,        Bentonite        etc.     



  Zudem können die     Zubereitungen,    geeignete     Kon-          servierungs-,        Stabilisierungs-,        Netzmittel,    Lösungsver  mittler. Süss- und Farbstoffe,     Aromatien    usw. ent  halten.  



  In den nachfolgenden Beispielen, welche die Aus  führung des Verfahrens erläutern, den Umfang der  Erfindung aber in keiner Weise     einschränken,    sollen,  erfolgen alle Temperaturangaben     in.    Celsiusgraden.  Die     Schmelzpunkte    sind     urkorrigiert.     



  <I>Beispiel 1</I>       9,10-Dihydro-10,10-dimethyl-9-[1'-methyl-          piperidyliden-(4')]-anthracen     a)     9,10-Dihydro-9-hydroxy-10,1.0-dimethyl-9-          [1'-methyl-piperidyl-(4')]-anthracen     2,66g mit Jod     aktivierte        Magnesiumspäne    werden    mit     abs.        Tetrahydrofuran        überschichtet    und mit eini  gen Tropfen     Ätylenbromid    aasgeätzt, wonach in Stick  stoffatmosphäre eine     Lösung    von 14,

  6g     1-Methyl-          4-chlor-piperidyl    in 40 ml     Tetrahydrofuran        zugetropft     und .das     Reaktionsgemisch        anschliessend    noch 1 Std.  unter Rückfluss gekocht wird.

   Dann wird die     Wärme-          quelle    entfernt, eine Lösung von 8,0     g        10,10-Di-          methyl-anthron:    in 55     ml        Tetra!hydrofuran        zugetropft,     2 Stunden zum Sieden     erhitzt,    abgekühlt und 450 ml       201/oi,ge    wässrige     Ammoniumchloridlösung    zugefügt.

    Die entstandenen zwei Schichten werden getrennt, der  wässrige Teil wird     zweimal    mit Äther ausgezogen und  die     vereinigten    organischen Auszüge werden     ihrerseits     dreimal mit 2 n Weinsäure extrahiert. Der Weinsäure  extrakt wird unter Kühlung     alkalisch        gestellt,        zweimal     mit Äther ausgezogen und der nach Waschen mit  Wasser, Trocknen über     Kaliumkarbonat    und Ein  dampfen erhaltene     Rückstand    aus Äthanol umkristal  lisiert.

   Das     analysenreine        9,10-Dihydro-9-hydroxy-          10,10-dimethyl-9-[1'-methyl-piperidyl-(4')]-anthracen     hat den     Smp.    196-198 .  



  b)     9,10-Dihydro-10,10-dimethyl-9-[        1'-methyl-          piperidyliden-(4')]-anthracen     5,0 g     9,10-Dihydro-9-hydroxy-10-10-dimethyl-9-          [1'-methyl-piperidyl-(4')]-anthracen    werden in einer  Lösung von 160 ml Eisessig und 20 ml     konz.    Salz  säure 1 Std. unter     Rückfluss    gekocht. Dann dampft  man im     Vakuum    ein und kristallisiert das zurück  bleibende Hydrochlorid aus     Äthanol    um.  



       Smp.    des     analysenreinen        9,10-Dihydro-10,        l0-li-          methyl-    9 -     [l'-methyl-piperidyliden-(4')]    -     anthracen-          hydrochlorids:    305-307      (Zers.).     



       Smp.    der freien Base: 196-197,5 .         Beispiel   <I>2</I>       9,10-Dihydro-10,10-diäthyl-9-[I'-methyl-          piperidyliden-(4')]-anthracen     a)     9,10-Dihydro-9-hydroxy-10,10-diäthyl-[        1'-methyl-          piperidyl-(4')]-anthracen     0,77 g mit Jod aktivierte     Mg-Späne    werden mit       abs.        Tetrahydrofuran        überschichtet    und mit einigen  Tropfen     Äthylenbromid        aasgeätzt,

      wonach     in.    Stick  stoffatmosphäre eine Lösung von 4,27 g     1-Methyl-          4-chlorpiperidin    in 13 ml     Tetrahydrofuran        zugetropft     und .das     Reaktionsgemisch        anschliessend    noch 1 Std.

    unter     Rückfluss    gekocht     wird.    Dann wird eine Lösung  von 4,0 g 10,l0     Diäthylanthron-(9)    in 8 ml     Tetra-          hydrofuran    bei 20      zugetropft,    1     Std.    zum Sieden  erhitzt, abgekühlt und 150 ml 20     o/oige    Ammonium  chloridlösung zugefügt. Die     entstandenen    zwei Schich  ten werden     getrennt,    der     wässrige    Teil wird zweimal  mit Äther ausgezogen und die     vereinigten    organischen       Auszüge    gut .mit Wasser gewaschen.

   Der nach Trock  nen über     Kaliumkarbonat    und Eindampfen erhaltene  Rückstand wird aus     Athanol        umkristallisiert.    Das  analysenreine     9,10-Dihydro-9-hydroxy-l        0,10-diäthyl-          9-[1'-methylpiperidyl        (4')]-anthracen    hat den     Smp.     194-196 .

        b)     9,10-Dihydro-10,10-diäthyl-9-[        1'-methyl-          piperidyliden-(4')]-anthracen     5,0 g     9,10-Dihydro-9-hydroxy-10,10-diäthyl-9-          [1'-methylpiperidyl-(4')]-anthracen    werden in einer  Lösung von 80 ml Eisessig und 20 ml     konz.    Salzsäure  1 Std. unter     Rückfluss        gekocht.    Dann dampft man im  Vakuum ein und kristallisiert das zurückbleibende  Hydrochlorid aus     ,Äthanol    um.

       Smp.    des reinen     9,10-          Dihydro    -10,10     -diäthyl-9    - [ 1'     -methylpiperidyliden-          (4')]-anthracen-hydrochlorids:

      276-277      (Zers.).       <I>Beispiel 3</I>       9,10-Dihydro-10,10-diallyl-9-[1'-methyl-          piperidyliden-(4')]-atatlzracen     a)     9,10-Dihydro-9-hydroxy-10,10-diallyl-9-          [1'-methylpiperidyl-(4')]-anthracen     1,75g mit Jod     aktivierte        Mg-Späne    werden mit       abs.        Tetrahydrofuran        überschichtet    und mit einigen  Tropfen     Äthylenbromid        angeätzt,    wonach in Stick  stoffatmosphäre eine Lösung von 9,

  61g     1-Methyl-          4-chlorpiperidin    in 30 ml     Tetrahydrofuran        zuge-          tropft    und das Reaktionsgemisch     anschliessend    noch  1 Std. unter Rückfluss gekocht wird. Dann wird eine  Lösung von 9,86 g     10,10-Diallylanthron-(9)    in 20 ml       Tetrahydrofuran    bei 20      zugetropft,    2 Std. bei 20        weitergerührt    und das Reaktionsgemisch unter Rüh  ren in 200 ml eiskalte 20     Ohige        Ammoniumchlorid-          lösung    gegossen.

   Die entstandenen zwei Schichten  werden getrennt, der wässrige Teil wird zweimal mit  Äther ausgezogen, die vereinigten organischen Aus  züge gut mit Wasser     gewaschen    und dreimal mit  2 n     Weinsäure        extrahiert.    Der     Weinsäureextrakt     wird unter Kühlung alkalisch gestellt,     zweimal    mit  Äther ausgezogen und der nach Waschen mit Was  ser, Trocknen über     Kaliumkarbonat    und Eindamp  fen erhaltene Rückstand aus     iso-Propanol    umkristal  lisiert.     Smp.    des     9,10-Dihydro-9-hydroxy-10,10-di-          allyl-9-[1'-methylpiperidyl-(4')]-anthracen:

  156-158 .       b)     9,10-Dihydro-10,10=diallyl-9-[1'-methyl-          piperidyliden-(4')]-anthracen     9,10     -Dihydro    -10,10 -     diallyl    - 9 - [     1'-methylpiperi-          dyliden-(4')]-anthracenwird    analog wie     9,10-Dihydro-          10,10-        di        äthyl-    9-[     1'-methylpiperidyliden-(4')]-anthra-          cen    hergestellt.

   Das Hydrochlorid des     9,10-Dihydro-          10,10-        diallyl-9-    [     1'-methylpiperidyliden-    (4')]-     anthra-          cen        wird    aus Äthanol umkristallisiert;     Smp.        307-          309     (Zerr.).  



  Die freie Base 9,10     Dihydro-10,10-diallyl-9-[1'-          methylpiperidyliden-(4')-anthracen        kristallisiert    aus  Äthanol mit einem     MolKristalläthanol;        Smp.90-115 .     <I>Beispiel 4</I>       9,10-Dihydro-10,10-dipropyl-9-[1'-methyl-          piperidyliden-(4')]-anthracen     a)     9,10-Dihydro-9-hydroxy-10,10-dipropyl-9-          [        1'"methylpiperidyl,(4')]-anthracen     Die im Titel genannte Verbindung wird aus 10,0 g       10,10-Dipropylanthron-(9)    analog zu Beispiel 3 a)

      hergestellt und aus     Isopropanol        umkristallisiert;        Smp.     179,5-181,5 .  



  b)     9,10-Dihydro-10,10-dipropyl-9-[1'-methyl-          piperidyliden-(4')]-anthracen     Die im Titel genannte     Verbindung    wird analog zu  Beispiel 2 b) hergestellt;     Smp.    (aus Methanol) mit  einem halben     Mol    Methanol: 53-56 .  



       Hydrochlorid:        S:mp.    (aus Äthanol): über 300 .  Das saure     Tartrat    wird durch Eintropfen einer       äthanolischen    Lösung von. 3,32 g der freien Base zu  einer Lösung von 1,53g Weinsäure     in:    15     m1    Äthanol  hergestellt;

       Smp.    (aus     Äthanol):        193-196 .       <I>Beispiel S</I>       9,10-Dihydro-10,10-ditnetiayl-9-[I'-butyl-          piperidyliden-(4')]-anthracen     a)     9,10-Dihydro-9-hy:droxy-10@,10-dimethyl-9-          [        1'-butylpiperidyl-(4')]-anthracen     Die im Titel genannte     Verbindung    wird aus 8,0 g       10,10-Dimethyl-anthron-(9)    und der aus 1,75 g  Magnesium und 12,7 g     1-Butyl-4-chlorpiperidin    her  gestellten     Grignar.d-Verbindung    analog zu Beispiel 3 a)  hergestellt;

       Sdp.:    200-220  / 0,05 mm     Hg.       b)     9,10-Dihydro-10,10-dimethyl-9-[1'-butyl-          piperidyliden-(4')]-anthracen     Die im Titel     genannte        Verbindung        wird    analog zu  Beispiel 2 b) hergestellt.  



  Hydrochlorid:     Smp.    (aus     Äthanol):    3.10-313 .



      Process for the preparation of new carbocyclic compounds The present invention relates to a process for the preparation of new carbocyclic compounds of the formula I,
EMI0001.0005
    where R1 and R2 are each a lower alkyl or alkenyl group and R3 is a lower alkyl group, characterized in that

  that from compounds of the formula 1I
EMI0001.0016
    Splits off water.



  This dehydration can, for example, by heating with concentrated acids or other dehydrating agents, such as. B. thionyl chloride, phosphorus oxychloride, zinc chloride or acetic anhydride are carried out. The elimination of water is carried out in solution, preferably in glacial acetic acid.



  The method of the present invention can be carried out, for example, as follows. A compound of the formula IV is dissolved in a mixture of glacial acetic acid and hydrochloric acid and heated under reflux. After the reaction, the solution is evaporated under reduced pressure and the residue was purified by recrystallization.



  The starting compounds of the formula II can be represented, for example, as follows: Magnesium turnings activated with iodine are covered with anhydrous tetrahydrofuran and the solution of a compound of the formula;

          III,
EMI0001.0045
    in which X is a chlorine, bromine or iodine atom (is added dropwise in an anhydrous organic solvent, and the reaction can be started by adding a little ethylene bromide.

   The reaction is brought to an end by heating and the solution of the Grignard compound of the formula IV,
EMI0001.0055
         dissolved in anhydrous organic solvent, added dropwise. As an organic solvent, for. B. tetrahydrofuran, ether or methylene chloride are used ver.

   To complete the reaction, the reaction mixture is expediently heated to the boil for some time, then hydrolyzed and the organic layer is worked up by methods known per se.



  The compounds of formula 1 prepared according to the invention are basic, crystalline compounds which are oily at room temperature and which form stable salts with inorganic or organic acids which crystallize at room temperature.

   The following acids, inter alia, can be used for salt formation: hydrochloric acid, hydrobromic acid, hydriodic acid, sulfuric acid, citric acid, tartaric acid, succinic acid, maleic acid, malic acid, acetic acid, benzoic acid, fumaric acid, gallic acid, hexahydro- benzoic acid, methanesulfonic acid and; Phosphoric acid.



  The new compounds have extremely valuable pharmacological properties; they are particularly characterized by a strong histamine-inhibiting effect and should therefore be used in therapy as antihistamine drugs.

   A particular advantage of the compounds obtained according to the invention is that no undesirable side effects such. B. dry mouth or tiredness occur.

   They develop a strong antitussive and bronchodilating effect and can therefore be used as remedies for the treatment of asthma, bronchial catarrh and cough of various origins. Finally, they also have a serotonin-inhibiting and anti-eholinergic effect. Some representatives of this series also have a sedative effect.



  The compounds can be used as medicaments alone or in corresponding medicament forms for enteral or parenteral administration. In order to produce suitable dosage forms, these are processed with inorganic or organic, pharmaceutically indifferent auxiliary substances. As auxiliaries are used z. B.



  for tablets and dragees: milk sugar, starch, talc, steraric acid, etc .; for syrups: cane sugar, invert sugar, glucose solutions, etc. a .; for injection preparations: water, alcohols, glycerol, vegetable oils, etc. like; for suppositories: natural or hydrogenated oils and waxes, etc. a. m.



       for ointments, suspensions and emulsions: to organic or organic lipophilic or hydrophilic compounds, paraffin, vaseline, alginates, cellulose derivatives, polyoxyethylene derivatives, bentonites, etc.



  In addition, the preparations, suitable preservatives, stabilizers, wetting agents and solubilizers can be used. Sweeteners, colorings, aromatics, etc. contain.



  In the following examples, which explain the implementation of the process but are not intended to restrict the scope of the invention in any way, all temperatures are given in degrees Celsius. The melting points are corrected.



  <I> Example 1 </I> 9,10-dihydro-10,10-dimethyl-9- [1'-methyl-piperidylidene- (4 ')] -anthracene a) 9,10-dihydro-9-hydroxy- 10.1.0-dimethyl-9- [1'-methyl-piperidyl- (4 ')] - anthracene 2.66g magnesium shavings activated with iodine are treated with abs. Tetrahydrofuran is overlaid and etched with a few drops of ethylene bromide, after which a solution of 14,

  6 g of 1-methyl-4-chloropiperidyl in 40 ml of tetrahydrofuran are added dropwise and the reaction mixture is then refluxed for a further 1 hour.

   The heat source is then removed, a solution of 8.0 g of 10,10-dimethyl-anthrone in 55 ml of tetrahydrofuran is added dropwise, heated to boiling for 2 hours, cooled and 450 ml of 201 / oi aqueous ammonium chloride solution added.

    The resulting two layers are separated, the aqueous part is extracted twice with ether and the combined organic extracts are in turn extracted three times with 2N tartaric acid. The tartaric acid extract is made alkaline with cooling, extracted twice with ether and the residue obtained after washing with water, drying over potassium carbonate and evaporating is recrystallized from ethanol.

   The analytically pure 9,10-dihydro-9-hydroxy-10,10-dimethyl-9- [1'-methyl-piperidyl- (4 ')] -anthracene has the melting point 196-198.



  b) 9,10-dihydro-10,10-dimethyl-9- [1'-methyl-piperidylidene- (4 ')] -anthracene 5.0 g of 9,10-dihydro-9-hydroxy-10-10-dimethyl -9- [1'-methyl-piperidyl- (4 ')] - anthracene are concentrated in a solution of 160 ml of glacial acetic acid and 20 ml. Hydrochloric acid refluxed for 1 hour. It is then evaporated in vacuo and the remaining hydrochloride is recrystallized from ethanol.



       M.p. of the analytically pure 9,10-dihydro-10,10-limethyl-9 - [l'-methyl-piperidylidene- (4 ')] - anthracene hydrochloride: 305-307 (dec.).



       Free base: 196-197.5. Example <I> 2 </I> 9,10-dihydro-10,10-diethyl-9- [I'-methylpiperidylidene- (4 ')] -anthracene a) 9,10-dihydro-9-hydroxy- 10,10-diethyl- [1'-methyl-piperidyl- (4 ')] - anthracene 0.77 g of iodine-activated magnesium shavings are treated with abs. Tetrahydrofuran overlaid and etched with a few drops of ethylene bromide,

      after which a solution of 4.27 g of 1-methyl-4-chloropiperidine in 13 ml of tetrahydrofuran was added dropwise in. Nitrogen atmosphere and the reaction mixture was then added for 1 hour.

    is refluxed. Then a solution of 4.0 g of 10.10 diethylanthrone (9) in 8 ml of tetrahydrofuran is added dropwise at 20, heated to boiling for 1 hour, cooled and 150 ml of 20% ammonium chloride solution are added. The resulting two layers are separated, the aqueous part is extracted twice with ether and the combined organic extracts are washed well with water.

   The residue obtained after drying over potassium carbonate and evaporation is recrystallized from ethanol. The analytically pure 9,10-dihydro-9-hydroxy-1,0,10-diethyl-9- [1'-methylpiperidyl (4 ')] anthracene has the melting point 194-196.

        b) 9,10-dihydro-10,10-diethyl-9- [1'-methyl-piperidylidene- (4 ')] -anthracene 5.0 g of 9,10-dihydro-9-hydroxy-10,10-diethyl -9- [1'-methylpiperidyl- (4 ')] - anthracene are concentrated in a solution of 80 ml of glacial acetic acid and 20 ml. Hydrochloric acid boiled under reflux for 1 hour. Then it is evaporated in vacuo and the remaining hydrochloride is crystallized out, ethanol is recrystallized.

       M.p. of the pure 9,10-dihydro -10,10-diethyl-9 - [1 '-methylpiperidylidene- (4')] - anthracene hydrochloride:

      276-277 (dec.). <I> Example 3 </I> 9,10-dihydro-10,10-diallyl-9- [1'-methylpiperidylidene- (4 ')] - atatlzracene a) 9,10-dihydro-9-hydroxy- 10,10-diallyl-9- [1'-methylpiperidyl- (4 ')] - anthracene 1.75 g of iodine-activated Mg shavings are treated with abs. Tetrahydrofuran is overlaid and etched with a few drops of ethylene bromide, after which a solution of 9,

  61 g of 1-methyl-4-chloropiperidine in 30 ml of tetrahydrofuran are added dropwise and the reaction mixture is then refluxed for a further 1 hour. Then a solution of 9.86 g of 10,10-diallylanthrone (9) in 20 ml of tetrahydrofuran is added dropwise at 20, stirring is continued for 2 hours at 20 and the reaction mixture is poured with stirring into 200 ml of ice-cold 20% ammonium chloride solution.

   The resulting two layers are separated, the aqueous portion is extracted twice with ether, the combined organic extracts are washed well with water and extracted three times with 2N tartaric acid. The tartaric acid extract is made alkaline with cooling, extracted twice with ether and the residue obtained after washing with water, drying over potassium carbonate and evaporation is recrystallized from isopropanol. M.p. of 9,10-dihydro-9-hydroxy-10,10-diallyl-9- [1'-methylpiperidyl- (4 ')] anthracene:

  156-158. b) 9,10-dihydro-10,10 = diallyl-9- [1'-methyl-piperidylidene- (4 ')] -anthracene 9,10-dihydro -10,10-diallyl-9 - [1'-methylpiperi - Dylidene- (4 ')] - anthracene is prepared analogously to 9,10-dihydro-10,10-diethyl- 9- [1'-methylpiperidylidene- (4')] anthracene.

   The hydrochloride of 9,10-dihydro-10,10-diallyl-9- [1'-methylpiperidylidene- (4 ')] - anthracene is recrystallized from ethanol; M.p. 307-309 (distort.).



  The free base 9,10 dihydro-10,10-diallyl-9- [1'-methylpiperidylidene- (4 ') - anthracene crystallizes from ethanol with one mole of crystal ethanol; M.p. 90-115. <I> Example 4 </I> 9,10-dihydro-10,10-dipropyl-9- [1'-methyl-piperidylidene- (4 ')] -anthracene a) 9,10-dihydro-9-hydroxy- 10,10-dipropyl-9- [1 '"methylpiperidyl, (4')] - anthracene The compound mentioned in the title is prepared from 10.0 g of 10,10-dipropylanthrone- (9) analogously to Example 3 a)

      made and recrystallized from isopropanol; M.p. 179.5-181.5.



  b) 9,10-dihydro-10,10-dipropyl-9- [1'-methylpiperidylidene- (4 ')] - anthracene The compound mentioned in the title is prepared analogously to Example 2 b); M.p. (from methanol) with half a mole of methanol: 53-56.



       Hydrochloride: S: mp. (from ethanol): over 300. The acidic tartrate is made by adding dropwise an ethanolic solution of. 3.32 g of the free base to a solution of 1.53 g of tartaric acid in: 15 ml of ethanol prepared;

       M.p. (from ethanol): 193-196. <I> Example S </I> 9,10-dihydro-10,10-ditnetiayl-9- [I'-butyl-piperidylidene- (4 ')] - anthracene a) 9,10-dihydro-9-hy: droxy-10 @, 10-dimethyl-9- [1'-butylpiperidyl- (4 ')] - anthracene The compound mentioned in the title is prepared from 8.0 g of 10,10-dimethyl-anthrone- (9) and that from 1 , 75 g of magnesium and 12.7 g of 1-butyl-4-chloropiperidine produced Grignar.d compound analogously to Example 3 a);

       B.p .: 200-220 / 0.05 mm Hg. B) 9,10-dihydro-10,10-dimethyl-9- [1'-butyl-piperidylidene- (4 ')] - anthracene The title compound is prepared analogously to Example 2 b).



  Hydrochloride: m.p. (from ethanol): 3.10-313.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von neuen carbocycli- schen Verbindungen der Formel I, EMI0003.0122 worin R1 und R, je eine niedere Alkyl- oder Alkenyl- gruppe und R3 eine niedere Alkylgruppe bedeutet, dadurch gekennzeichnet, .dass man aus Verbindungen der Formel TI EMI0003.0131 Wasser abspaltet. PATENT CLAIM Process for the preparation of new carbocyclic compounds of the formula I, EMI0003.0122 wherein R1 and R, each a lower alkyl or alkenyl group and R3 is a lower alkyl group, characterized in that .dass one from compounds of the formula TI EMI0003.0131 Splits off water.
CH1497262A 1962-12-20 1962-12-20 Process for the preparation of new carbocyclic compounds CH419125A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CH1497262A CH419125A (en) 1962-12-20 1962-12-20 Process for the preparation of new carbocyclic compounds
GB4680063A GB1060466A (en) 1962-12-20 1963-11-27 Improvements in or relating to novel anthracene derivatives
DE19631470259 DE1470259A1 (en) 1962-12-20 1963-12-18 Process for the preparation of new heterocyclic compounds
DK594463A DK105025C (en) 1962-12-20 1963-12-19 Process for the preparation of unsaturated 9,10-dihydro-10,10, -dimethylanthracene derivatives or acid addition salts thereof.
ES0294657A ES294657A1 (en) 1962-12-20 1963-12-19 Improvements in or relating to novel anthracene derivatives
AT1028063A AT243266B (en) 1962-12-20 1963-12-20 Process for the preparation of new, basic dihydroanthracene derivatives and their acid addition salts
FR967751A FR3223M (en) 1962-12-20 1964-03-17 Medicinal product based on a derivative of dihydro-anthracene.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1497262A CH419125A (en) 1962-12-20 1962-12-20 Process for the preparation of new carbocyclic compounds

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CH419125A true CH419125A (en) 1966-08-31

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