CH474510A - Process for the preparation of 1-acyl-3-indolyl-aliphatic acids - Google Patents

Process for the preparation of 1-acyl-3-indolyl-aliphatic acids

Info

Publication number
CH474510A
CH474510A CH1674668A CH1674668A CH474510A CH 474510 A CH474510 A CH 474510A CH 1674668 A CH1674668 A CH 1674668A CH 1674668 A CH1674668 A CH 1674668A CH 474510 A CH474510 A CH 474510A
Authority
CH
Switzerland
Prior art keywords
substituted
compound
formula
radical
aryl
Prior art date
Application number
CH1674668A
Other languages
German (de)
Inventor
Gal George
Sletzinger Meyer
Original Assignee
Merck & Co Inc
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 Merck & Co Inc filed Critical Merck & Co Inc
Priority claimed from CH115364A external-priority patent/CH489495A/en
Publication of CH474510A publication Critical patent/CH474510A/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D209/00Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04Indoles; Hydrogenated indoles
    • C07D209/10Indoles; Hydrogenated indoles with substituted hydrocarbon radicals attached to carbon atoms of the hetero ring
    • C07D209/12Radicals substituted by oxygen atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D209/00Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04Indoles; Hydrogenated indoles
    • C07D209/10Indoles; Hydrogenated indoles with substituted hydrocarbon radicals attached to carbon atoms of the hetero ring
    • C07D209/18Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D209/00Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04Indoles; Hydrogenated indoles
    • C07D209/10Indoles; Hydrogenated indoles with substituted hydrocarbon radicals attached to carbon atoms of the hetero ring
    • C07D209/18Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D209/26Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with an acyl radical attached to the ring nitrogen atom
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D209/00Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04Indoles; Hydrogenated indoles
    • C07D209/10Indoles; Hydrogenated indoles with substituted hydrocarbon radicals attached to carbon atoms of the hetero ring
    • C07D209/18Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D209/26Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with an acyl radical attached to the ring nitrogen atom
    • C07D209/281-(4-Chlorobenzoyl)-2-methyl-indolyl-3-acetic acid, substituted in position 5 by an oxygen or nitrogen atom; Esters thereof
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D209/00Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04Indoles; Hydrogenated indoles
    • C07D209/30Indoles; Hydrogenated indoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to carbon atoms of the hetero ring
    • C07D209/32Oxygen atoms
    • C07D209/36Oxygen atoms in position 3, e.g. adrenochrome

Landscapes

  • 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)
  • Indole Compounds (AREA)

Description

  

  Verfahren zur Herstellung von 1-Acyl-3-indolyl-aliphatischen Säuren    Gegenstand der vorliegenden Erfindung ist ein Ver  fahren zur Herstellung von 1-Acyl-3-indolyl-aliphatischen  Säuren der Formel:  
EMI0001.0000     
    worin  R, Aryl, substituiertes Aryl, Heteroaryl oder sub  stituiertes Heteroaryl-Radikal bedeutet,  Wasserstoffatom oder Niederalkyl, Niederalkenyl,  R  Aryl, Aralkyl, Alkaryl, substituiertes Alkyl oder substi  tuiertes Arylradikal ist,  R3 für Wasserstoffatom oder Niederalkyl oder     Nieder-          alkenyl-Radikal    steht,       R5    ein Wasserstoff- oder Halogenatom oder Nieder  alkyl, Niederalkoxy, Halogenalkyl, Nitro, Amino, sub  stituiertes Amino, Cyano, Aminomethyl, Alkyl-substi  tuiertes Aminomethyl, Mercapto, Dialkylsulfonamid oder  Benzyl-mercapto-Radikal ist.

    



  Das vorliegende erfindungsgemässe Verfahren beruht  auf der sogenannten Wittig'schen Reaktion. Diese be  zieht sich auf die Umwandlung einer     Carbonyl-Verbin-          dung    in ein Olefin, wobei das Sauerstoffatom, der     Carbo-          nylgruppe    durch eine Alkyliden-Gruppe nach Einwirkung  eines Alkylidentriphenylphosphorans, ersetzt wird. Im  vorliegenden erfindungsgemässen Verfahren wird von  einem 1-Acyl-2,5-substituierten-3-ketoindoxyl der unten  angeführten Formel ausgegangen, wobei die Ketogruppe  durch die gewünschte Ester-Seitenkette ersetzt wird.

   Bei  Verwendung der obigen Reaktion des tertiären Butylesters  als Ester-Reaktionsmittel sind beim Verfahren der Mi  gration der Oxo-Doppelbindung gleichzeitig die tertiäre  Butylestergruppen abpyrolysiert.    Das erfindungsgemässe Verfahren zur Herstellung obi  ger Verbindung ist somit dadurch gekennzeichnet, dass  man eine Verbindung der Formel:  
EMI0001.0008     
    mit einer Verbindung der Formel:  
EMI0001.0009     
    in einem     inerten    Lösungsmittel erhitzt, wobei sich eine  Verbindung der Formel:  
EMI0001.0011     
    bildet und die     genannte    Verbindung in einem     inerten    Lö  sungsmittel mit mindestens einer katalytischen Menge  einer starken Säure auf eine Temperatur von über 70 C  erhitzt.  



  Es können aber auch andere Ester als der tertiäre       Butylester    als Reaktionsmittel verwendet werden, wobei      entsprechende Indolester erhalten werden. Aus diesen  Estern können dann durch Hydrolyse die entsprechen  den Säuren erhalten werden.  



  Die erfindungsgemäss erzeugten 3-Indolylsäuren kön  nen zur Herstellung von Amiden, Estern und Salzen ver  wendet werden. Die Herstellung dieser Verbindungen er  folgt auf bekannte Weise.  



  Die erfindungsgemäss erzeugten     1-Acyl-3-indolyl-ali-          phatischen-Säure-Verbindungen    und ihre entsprechenden  Salze, Ester, und Amide besitzen in hohem Grade eine  entzündungshemmende Wirksamkeit und sind bei der  Vorbeugung und Verhinderung der     Granuloma-Gewebe-          bildung    wirksam.

   Gewisse dieser erfindungsgemäss er  zeugten Verbindungen weisen diese Wirksamkeit in einem  hohen Grade auf und sind deshalb bei der Behandlung  von artkritischen und dermatologischen Leiden und ähn  lichen Bedingungen, welche auf die Behandlung mit ent  zündungshemmenden Mitteln empfindlich sind,     nützlich.     Überdies haben diese erfindungsgemäss erzeugten Ver  bindungen einen nützlichen Grad an antipyretischer Wirk  samkeit. Zu diesem Zweck werden sie normalerweise  oral in Tabletten oder Kapseln verabreicht, wobei die  optimale Dosis     selbstverständlich    von der verwendeten  besonderen Verbindung und dem Typus und der Schwere  der zu     behandelnden        Affektion    abhängt.

   Obschon die op  timalen Mengen dieser     erfindungsgemäss    erzeugten Ver  bindungen, die auf die oben beschriebene Weise benützt  werden sollen, von der verwendeten Verbindung und dem  besondern Typus des zu behandelnden Leidens abhän  gen, bewegen sich die oralen Dosierungsspiegel der be  vorzugten, erfindungsgemäss erzeugten Verbindungen im  Bereiche von l,0-200 mg pro Tag, welche Mengen bei der  Überwachung der artkritischen Bedingungen, in Abhän  gigkeit von der Wirksamkeit der spezifischen verwende  ten Verbindung und der Reaktionsempfindlichkeit des  Patienten, nützlich sind.    <I>Beispiel</I>  a) Herstellung von P-Ylene  Zu einer Lösung von 262 g Triphenylphosphin in  1200 ml Benzol werden innerhalb von 30 Minuten 183 g  t-Butyl-bromacetat bei 35-40 C zugefügt.

   Nach Rühren  über Nacht wird filtriert, mit Benzol-Pentan gewaschen  und bei 40 C im Vakuum getrocknet Das     Phosphonium-          salz    wird dann in das Ylene, durch Rühren in kaltem  Wasser mit 50 g/Liter und Neutralisieren auf Phenol  phthalein mit verdünntem Alkali, überführt. Das Pro  dukt wird filtriert, gewaschen, getrocknet, und aus     Pen-          ten-Essigsäure    umkristallisiert.    b) Wittig'sche Reaktion  Zu 37,6 g, d.s. 0,1 Mole, P-Ylene in 50 ml CH2Cl2  wird langsam eine konzentrierte Lösung von 31,6 g, d.s.  0,1 Mole, eines 3-Keto-Indoxyls im selben Lösungsmit  tel zugesetzt.

   Nach Rückflussbehandlung über Nacht wird  die Lösung auf die Hälfte des Volumens eingeengt, es  werden 100 ml Petrol-Äther zugeführt und das (C6H5)3P  = O rasch und solange es warm ist, filtriert. Durch Ab  schrecken in Eis wird das Produkt niedergeschlagen. Eine  zweite Partie kann so erhalten werden, dass man die  Mutterlaugen konzentriert.



  Process for the preparation of 1-acyl-3-indolyl-aliphatic acids The present invention relates to a process for the preparation of 1-acyl-3-indolyl-aliphatic acids of the formula:
EMI0001.0000
    where R, aryl, substituted aryl, heteroaryl or substituted heteroaryl radical is hydrogen atom or lower alkyl, lower alkenyl, R is aryl, aralkyl, alkaryl, substituted alkyl or substituted aryl radical, R3 is hydrogen atom or lower alkyl or lower alkenyl radical , R5 is a hydrogen or halogen atom or lower alkyl, lower alkoxy, haloalkyl, nitro, amino, substituted amino, cyano, aminomethyl, alkyl-substituted aminomethyl, mercapto, dialkylsulfonamide or benzyl-mercapto radical.

    



  The present inventive method is based on the so-called Wittig reaction. This relates to the conversion of a carbonyl compound into an olefin, the oxygen atom, the carbonyl group, being replaced by an alkylidene group after the action of an alkylidene triphenylphosphorane. The present process according to the invention starts from a 1-acyl-2,5-substituted-3-ketoindoxyl of the formula given below, the keto group being replaced by the desired ester side chain.

   When using the above reaction of the tertiary butyl ester as the ester reactant, the tertiary butyl ester groups are pyrolyzed off at the same time in the process of migrating the oxo double bond. The inventive method for the preparation of the above compound is thus characterized in that a compound of the formula:
EMI0001.0008
    with a compound of the formula:
EMI0001.0009
    heated in an inert solvent, a compound of the formula:
EMI0001.0011
    forms and the said compound is heated to a temperature of over 70 ° C. in an inert solvent with at least a catalytic amount of a strong acid.



  However, esters other than the tertiary butyl ester can also be used as reactants, corresponding indol esters being obtained. The corresponding acids can then be obtained from these esters by hydrolysis.



  The 3-indolyl acids produced according to the invention can be used for the production of amides, esters and salts. The preparation of these compounds he follows in a known manner.



  The 1-acyl-3-indolyl-aliphatic acid compounds and their corresponding salts, esters, and amides produced in accordance with the invention have a high degree of anti-inflammatory activity and are effective in preventing and preventing the formation of granuloma tissue.

   Certain of these compounds produced according to the invention exhibit this activity to a high degree and are therefore useful in the treatment of species-critical and dermatological conditions and similar conditions which are sensitive to treatment with anti-inflammatory agents. In addition, these compounds produced according to the invention have a useful level of antipyretic efficacy. For this purpose they will normally be administered orally in tablets or capsules, the optimum dose of course depending on the particular compound used and the type and severity of the condition being treated.

   Although the optimal amounts of these compounds produced according to the invention, which are to be used in the manner described above, depend on the compound used and the particular type of condition to be treated, the oral dosage levels of the preferred compounds produced according to the invention are in the range from 1.0-200 mg per day, which amounts are useful in monitoring the species-critical conditions, depending on the effectiveness of the specific compound used and the sensitivity of the patient to reaction. <I> Example </I> a) Production of P-Ylene 183 g of t-butyl bromoacetate at 35-40 ° C. are added to a solution of 262 g of triphenylphosphine in 1200 ml of benzene over the course of 30 minutes.

   After stirring overnight, it is filtered, washed with benzene-pentane and dried at 40 ° C. in vacuo. The phosphonium salt is then converted into the ylene by stirring in cold water at 50 g / liter and neutralizing on phenol phthalein with dilute alkali. The product is filtered, washed, dried and recrystallized from pentene acetic acid. b) Wittig's reaction To 37.6 g, d.s. 0.1 mole of P-Ylene in 50 ml of CH2Cl2 slowly becomes a concentrated solution of 31.6 g, d.s. 0.1 moles of a 3-keto-indoxyl added in the same solvent tel.

   After refluxing overnight, the solution is concentrated to half its volume, 100 ml of petroleum ether are added and the (C6H5) 3P = O is filtered quickly and as long as it is warm. The product is precipitated by quenching it in ice. A second batch can be obtained by concentrating the mother liquors.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von Verbindungen der Formel: EMI0002.0013 R, Aryl, substituiertes Aryl, Heteroaryl oder substi tuiertes Heteroaryl-Radikal bedeutet, R2 ist Wasserstoffatom oder Niederalkyl, Niederalke- nyl, Aryl, Aralkyl, Alkaryl, substituiertes Alkyl oder sub stituiertes Arylradikal, R3 steht für Wasserstoffatom oder Niederalkyl oder Niederalkenyl-Radikal, R5 ist ein Wasserstoff- oder Halogenatom oder Nie deralkyl, Niederalkoxy, Halogenalkyl, Nitro, Amino, sub stituiertes Amino, Cyano, Aminomethyl, Alkyl-substi tuiertes Aminomethyl, Mercapto, Dialkylsulfonamid oder Benzyl-mercapto-Radikal, dadurch gekennzeichnet, dass man eine Verbindung der Formel: PATENT CLAIM Process for the preparation of compounds of the formula: EMI0002.0013 R is aryl, substituted aryl, heteroaryl or substituted heteroaryl radical, R2 is hydrogen atom or lower alkyl, lower alkenyl, aryl, aralkyl, alkaryl, substituted alkyl or substituted aryl radical, R3 stands for hydrogen atom or lower alkyl or lower alkenyl radical, R5 is a hydrogen or halogen atom or lower alkyl, lower alkoxy, haloalkyl, nitro, amino, substituted amino, cyano, aminomethyl, alkyl-substituted aminomethyl, mercapto, dialkylsulfonamide or benzyl-mercapto radical, characterized in that one compound the formula: EMI0002.0019 mit einer Verbindung der Formel: R;; (C Hä)3P - C ) COOC(CH in einem inerten Lösungsmittel erhitzt, wobei sich eine Verbindung der Formel EMI0002.0028 bildet und die genannte Verbindung in einem inerten Lösungsmittel mit mindestens einer katalytischen Menge einer starken Säure auf eine Temperatur von über 70 C erhitzt. EMI0002.0019 with a compound of the formula: R ;; (C Hä) 3P - C) COOC (CH heated in an inert solvent, forming a compound of the formula EMI0002.0028 and the said compound is heated to a temperature of over 70 ° C. in an inert solvent with at least a catalytic amount of a strong acid. Sollten Teile der Beschreibung mit der im Patentan spruch gegebenen Definition der Erfindung nicht in Ein klang stehen, so sei daran erinnert, dass gemäss Art. 51 des Patentgesetzes der Patentanspruch für den sachlichen Geltungsbereich des Patentes massgebend ist. If parts of the description do not match the definition of the invention given in the patent claim, it should be remembered that according to Art. 51 of the Patent Act, the patent claim is decisive for the material scope of the patent.
CH1674668A 1963-02-01 1964-01-31 Process for the preparation of 1-acyl-3-indolyl-aliphatic acids CH474510A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25564263A 1963-02-01 1963-02-01
CH115364A CH489495A (en) 1963-02-01 1967-02-23 Process for the preparation of 3-indolyl-lower aliphatic acids

Publications (1)

Publication Number Publication Date
CH474510A true CH474510A (en) 1969-06-30

Family

ID=25686821

Family Applications (3)

Application Number Title Priority Date Filing Date
CH1674668A CH474510A (en) 1963-02-01 1964-01-31 Process for the preparation of 1-acyl-3-indolyl-aliphatic acids
CH235968A CH478795A (en) 1963-02-01 1964-01-31 Process for the preparation of α- (3-indolyl) -lower aliphatic acids or esters
CH236768A CH478796A (en) 1963-02-01 1964-01-31 Process for the preparation of 1-acylated 3-indole-aliphatic acids

Family Applications After (2)

Application Number Title Priority Date Filing Date
CH235968A CH478795A (en) 1963-02-01 1964-01-31 Process for the preparation of α- (3-indolyl) -lower aliphatic acids or esters
CH236768A CH478796A (en) 1963-02-01 1964-01-31 Process for the preparation of 1-acylated 3-indole-aliphatic acids

Country Status (1)

Country Link
CH (3) CH474510A (en)

Also Published As

Publication number Publication date
CH478796A (en) 1969-09-30
CH478795A (en) 1969-09-30

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