CH469662A - Process for the preparation of new substituted phenyl-a-aminoketones - Google Patents

Process for the preparation of new substituted phenyl-a-aminoketones

Info

Publication number
CH469662A
CH469662A CH129668A CH129668A CH469662A CH 469662 A CH469662 A CH 469662A CH 129668 A CH129668 A CH 129668A CH 129668 A CH129668 A CH 129668A CH 469662 A CH469662 A CH 469662A
Authority
CH
Switzerland
Prior art keywords
aminoketones
preparation
formula
phenyl
substituted phenyl
Prior art date
Application number
CH129668A
Other languages
German (de)
Inventor
Herbert Dr Koeppe
Gerhard Dr Ludwig
Zeile Karl Dr Prof
Original Assignee
Boehringer Sohn Ingelheim
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
Priority claimed from DEB76240A external-priority patent/DE1242241B/en
Application filed by Boehringer Sohn Ingelheim filed Critical Boehringer Sohn Ingelheim
Publication of CH469662A publication Critical patent/CH469662A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D317/00Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D317/08Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
    • C07D317/44Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D317/46Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems condensed with one six-membered ring
    • C07D317/48Methylenedioxybenzenes or hydrogenated methylenedioxybenzenes, unsubstituted on the hetero ring
    • C07D317/50Methylenedioxybenzenes or hydrogenated methylenedioxybenzenes, unsubstituted on the hetero ring with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to atoms of the carbocyclic ring
    • C07D317/58Radicals substituted by nitrogen atoms
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B29/00Sewing-tables

Description

  

  Verfahren zur Herstellung von neuen substituierten     Phenyl-a-aminoketonen            Phenyl-a-aminoketone    sind in der Literatur meist nur  als Zwischenverbindungen für die Herstellung von     Phe-          nyl-a-aminoalkanolen    beschrieben. Die am Kern mit  Sauerstoffgruppen substituierten     Phenylaminoalkanole     wirken als     Adrenalinderivate        blutzuckersteigernd,    blut  druckerhöhend und     bronchodilatatorisch.     



       Die    vorliegende Erfindung betrifft die Herstellung  neuer     Phenyl-a-aminoketone    der Formel  
EMI0001.0010     
    worin     R1    einen     unverzweigten        Alkylrest    mit 2-6     Koh-          lenstoffatomen,     R2 Wasserstoff oder eine gerade oder verzweigte  niedere     Alkylgruppe,          R3    eine gerade oder verzweigte niedere     Alkyl-          gruppe,          R4    eine     Alkoxygruppe    in o-,

   m- oder     p-Stellung     des     Benzolkerns    und         R5    Wasserstoff oder zusammen mit     R4    eine     3',4'-          -Methylendioxygruppe    bedeuten,  und von ihren Additionsverbindungen     mit    Säuren.  Diese Verbindungen haben     wertwolle    therapeutische  Eigenschaften. Sie wirken insbesondere zentralerregend.

    Es war überraschend, dass in der Klasse der am     Phenyl-          kern    mit Sauerstoffgruppen substituierten     Phenyl-a-          -aminoketone    Substanzen aufgefunden werden konnten,  die zentralerregend wirksam sind und eine hohe thera  peutische Breite haben.     Die    erfindungsgemäss hergestell  ten Substanzen können zur Behandlung von milden De  pressionszuständen, auch solchen, die durch Arzneimittel  hervorgerufen wurden, sowie bei Ermüdungserschei  nungen und in der Rekonvaleszenz Verwendung finden.

    Einige der Substanzen, insbesondere das     1-(3',4'-Methy-          lendioxyphenyl)-2-äthylaminobutanon-1    haben auch eine  therapeutisch verwertbare appetitzügelnde Wirkung.  



  Ihre wertvollen pharmakologischen Eigenschaften sol  len in der nachstehenden Tabelle gezeigt werden.  



       In    der Tabelle bedeutet:  Z = die Zentralerregung an der Maus       (EI)So    in mg/ kg)       LDSO    = die Toxizität an der Maus (in mg/kg)  I = den therapeutischen Index
EMI0001.0040  
    
EMI0001.0041     
  
       Die Substanzen der Formel I werden     erfindungsge-          mäss    erhalten durch     Alkylierung    der primären oder se  kundären     Phenyl-a-aminoketone    der Formel  
EMI0002.0004     
    mit üblichen     Alkylierungsmitteln,    wie     Alkylhalogeniden,          Alkylbenzolsulfonaten,

          Alkyl-p-toluolsulfonaten    oder     Di-          alkylsulfaten,    vorzugsweise in Gegenwart von säurebin  denden Mitteln, wie Alkalien oder     Alkylialkoholaten    er  halten. Die Umsetzung erfolgt zweckmässig in wässriger  Suspension oder in organischen Lösungsmitteln.     Methyl-          gruppen    können auch mit einem Gemisch aus     Formal-          dehyd/Ameisensäure    eingeführt werden.    Die erfindungsgemäss hergestellten Verbindungen  haben ein optisch aktives Zentrum. Man kann die     Ra-          cemate    auf übliche Weise, z.

   B. fraktionierte Kristallisa  tion der     diastereomeren    Salze mit     Dibenzyl-D-Weinsäure,     in die optischen Antipoden aufspalten.  



  Die pharmakologische Anwendung der neuen Verbin  dungen erfolgt vorteilhaft in Form von     Säureadditions-          salzen,    wobei als salzbindende Komponenten anorgani  sche und organische Säuren, wie Halogenwasserstoff  säuren, Schwefelsäure, Phosphorsäure, Weinsäure,     Sulf-          aminsäure    oder     8-Chlortheophyllin,    verwandt werden  können.  



  Die folgenden Beispiele erläutern die Erfindung, ohne  sie zu beschränken.  



       Beispiel   <I>1</I>       1-(3',4'-Methylendioxyphenyl)-2-äthylamino-pentanon-(1)     1,256 g     2-Amino-3',4'-methylendioxyvalerophenon     werden in 30 ml     95 joigem        Äthanol    gelöst, mit 0,78 g       Äthyljodid    und 1,5 g     NaHC03    versetzt und 2 Stunden  unter Rückfluss erhitzt.

   Anschliessend wird im Vakuum  eingeengt,     in    Wasser aufgenommen, alkalisch gestellt  und     ausgeäthert.    Nach Abdampfen des Lösungsmittels  wird in     ca.        60 /oiger    Ausbeute     1-(3',4'-Methylendioxy-          phenyl)-2-äthylamino-pentanon-(1)    gewonnen.  



  Nach dem hier beschriebenen Verfahren werden auch  die folgenden Substanzen hergestellt:  
EMI0002.0038     
  
     
EMI0003.0000     
  




  Process for the preparation of new substituted phenyl-α-aminoketones Phenyl-α-aminoketones are mostly only described in the literature as intermediate compounds for the preparation of phenyl-α-aminoalkanols. The phenylaminoalkanols substituted on the core with oxygen groups act as adrenaline derivatives to increase blood sugar, blood pressure and bronchodilator.



       The present invention relates to the preparation of new phenyl-a-aminoketones of the formula
EMI0001.0010
    where R1 is an unbranched alkyl radical with 2-6 carbon atoms, R2 is hydrogen or a straight or branched lower alkyl group, R3 is a straight or branched lower alkyl group, R4 is an alkoxy group in o-,

   m- or p-position of the benzene nucleus and R5 is hydrogen or together with R4 is a 3 ', 4'- methylenedioxy group, and of their addition compounds with acids. These compounds have valuable therapeutic properties. In particular, they have a central stimulating effect.

    It was surprising that in the class of phenyl-α-amino ketones substituted with oxygen groups on the phenyl nucleus, substances could be found which have a central stimulating effect and a wide therapeutic range. The substances produced according to the invention can be used for the treatment of mild states of depression, including those caused by drugs, as well as for symptoms of fatigue and in convalescence.

    Some of the substances, in particular 1- (3 ', 4'-methylenedioxyphenyl) -2-ethylaminobutanone-1, also have a therapeutically useful appetite suppressant effect.



  Their valuable pharmacological properties are shown in the table below.



       In the table: Z = the central excitation in the mouse (EI) So in mg / kg) LDSO = the toxicity in the mouse (in mg / kg) I = the therapeutic index
EMI0001.0040
    
EMI0001.0041
  
       According to the invention, the substances of the formula I are obtained by alkylating the primary or secondary phenyl-α-aminoketones of the formula
EMI0002.0004
    with common alkylating agents such as alkyl halides, alkylbenzenesulfonates,

          Alkyl p-toluenesulphonates or dialkylsulphates, preferably in the presence of acid-binding agents, such as alkalis or alkyl alcoholates, he hold. The reaction is expediently carried out in an aqueous suspension or in organic solvents. Methyl groups can also be introduced with a mixture of formaldehyde / formic acid. The compounds prepared according to the invention have an optically active center. You can use the racemate in the usual way, e.g.

   B. fractional crystallization of the diastereomeric salts with dibenzyl-D-tartaric acid, split into the optical antipodes.



  The pharmacological use of the new compounds takes place advantageously in the form of acid addition salts, in which case inorganic and organic acids such as hydrohalic acids, sulfuric acid, phosphoric acid, tartaric acid, sulfamic acid or 8-chlorotheophylline can be used as salt-binding components.



  The following examples illustrate the invention without restricting it.



       Example <I> 1 </I> 1- (3 ', 4'-methylenedioxyphenyl) -2-ethylamino-pentanone- (1) 1.256 g of 2-amino-3', 4'-methylenedioxyvalerophenone are dissolved in 30 ml of 95% ethanol dissolved, treated with 0.78 g of ethyl iodide and 1.5 g of NaHCO 3 and heated under reflux for 2 hours.

   It is then concentrated in vacuo, taken up in water, made alkaline and extracted with ether. After evaporation of the solvent, 1- (3 ', 4'-methylenedioxyphenyl) -2-ethylaminopentanone- (1) is obtained in a yield of about 60%.



  The following substances are also produced using the process described here:
EMI0002.0038
  
     
EMI0003.0000
  


 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von neuen Phenyl-a-amino- ketonen der Formel EMI0004.0002 worin R, einen unverzweigten Alkylrest mit 2-6 Koh- lenstoffatomen, R2 Wasserstoff oder eine gerade oder verzweigte niedere Alkylgruppe, R3 eine gerade oder verzweigte niedere Alkyl- gruppe, R4 eine Alkoxygruppe in o-, PATENT CLAIM Process for the production of new phenyl-a-aminoketones of the formula EMI0004.0002 where R is an unbranched alkyl radical with 2-6 carbon atoms, R2 is hydrogen or a straight or branched lower alkyl group, R3 is a straight or branched lower alkyl group, R4 is an alkoxy group in o-, m- oder p-Stellung des Benzolkerns und R, Wasserstoff oder zusammen mit R4 eine T,4'- -Methylendioxygruppe bedeuten, und von ihren Additionsverbindungen mit Säuren, da durch gekennzeichnet, dass man primäre oder sekundäre Phenyl-u-aminoketone der Formel EMI0004.0025 alkyliert. UNTERANSPRUCH Verfahren nach Patentanspruch, dadurch gekenn zeichnet, dass man die erhaltenen Verbindungen der Formel (I) m- or p-position of the benzene nucleus and R, hydrogen or, together with R4, a T, 4'- methylenedioxy group, and of their addition compounds with acids, characterized in that primary or secondary phenyl-u-aminoketones of the formula EMI0004.0025 alkylated. SUB-CLAIM Process according to claim, characterized in that the compounds of formula (I) obtained durch Behandeln mit Säuren in ihre Säure additionssalze überführt. converted into their acid addition salts by treatment with acids.
CH129668A 1964-04-08 1965-03-22 Process for the preparation of new substituted phenyl-a-aminoketones CH469662A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEB76240A DE1242241B (en) 1964-04-08 1964-04-08 Process for the preparation of substituted phenyl-alpha-aminoketones and their acid addition salts or their optical antipodes
CH394265A CH464959A (en) 1964-04-08 1965-03-22 Process for the preparation of new substituted phenyl-a-aminoketones

Publications (1)

Publication Number Publication Date
CH469662A true CH469662A (en) 1969-03-15

Family

ID=25694240

Family Applications (2)

Application Number Title Priority Date Filing Date
CH129668A CH469662A (en) 1964-04-08 1965-03-22 Process for the preparation of new substituted phenyl-a-aminoketones
CH129768A CH469663A (en) 1964-04-08 1965-03-22 Process for the preparation of new substituted phenyl-a-aminoketones

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH129768A CH469663A (en) 1964-04-08 1965-03-22 Process for the preparation of new substituted phenyl-a-aminoketones

Country Status (1)

Country Link
CH (2) CH469662A (en)

Also Published As

Publication number Publication date
CH469663A (en) 1969-03-15

Similar Documents

Publication Publication Date Title
EP0883610B1 (en) Process for preparing 1,4,7,10-tetraazacyclododecane and its derivatives
DE1242596B (en) Process for the preparation of 1-isopropylamino-2-hydroxy-3- (o-allyloxy-phenoxy) -propane
CH469662A (en) Process for the preparation of new substituted phenyl-a-aminoketones
DE2639291C2 (en)
DE2351281C3 (en) Aminophenylethanolamine derivatives, their production and use
DE945449C (en) Process for the preparation of 2-methyl-4-cyclohexyl-6-methyl-aminomethylphenol
CH417630A (en) Process for the preparation of new cyclic 2,3-O-acetals and 2,3-O-ketals of butanetetrol esters
AT266091B (en) Process for the preparation of new substituted phenyl-α-aminoalkyl-ketones and their acid addition salts
DE1670378A1 (en) Process for the preparation of a compound from phenylbutazone and ss-diaethylaminoaethylamide of p-chlorophenoxyacetic acid
AT364824B (en) METHOD FOR PRODUCING NEW N- (1- (3-BENZOYLPROPYL) -4-PIPERIDYL) SULPHONIC ACID AMIDES AND THEIR ACID ADDITION SALTS
AT266075B (en) Process for the preparation of new sulfonanilides and their acid addition and metal salts
DE2816627A1 (en) Antihypertensive isoindolinyl-amino-imidazoline - prepd. by reacting 2-amino-isoindoline with 2-alkylthio-2-imidazoline
AT257578B (en) Process for the preparation of new phenyl-α-aminoalkyl-ketones and their acid addition salts
DE1643784C (en) Biologically active isothiocyanates and processes for their preparation
DE2720968A1 (en) Antiulcer acylated 2-hydroxy-3-phenyl-1,3-di:amino-propane cpds. - prepd. e.g. by reacting the corresp non-acylated di:amine with reactive carboxylic acid deriv.
AT282586B (en) PROCESS FOR THE PREPARATION OF NEW RACEMIC OR OPTICALLY ACTIVE (1-2&#39;-NITRILOPHENOXY) -2-HYDROXY-3-ISOPROPYLAMINOPROPANE AND ITS SALTS
AT165069B (en) Process for the production of new phenoxyacetamidines
DE1518691C (en) 9 (gamma methylamino propyl) 9,10 dihydro 9 10 athano anthracene, its salts and process for their production
DE959097C (en) Process for the preparation of basic substituted diarylacetonitriles
AT276393B (en) Process for the preparation of new dibenzocycloheptene derivatives, their ketals and / or acid addition salts
AT256071B (en) Process for the preparation of new amino-halogen-benzylamines and their addition salts with acids
AT222120B (en) Process for the preparation of new tetrahydroisoquinoline derivatives
AT255426B (en) Process for the preparation of new triazines
DE2019719C3 (en) 1,3,4-Substituted 5-dimethylaminouracils and processes for their preparation
AT214937B (en) Process for the preparation of new N-arylsulfonyl-N&#39;-tetramethylene ureas