CH532050A - N-(4-chloro)-cinnamoyl-(4'-hydroxy)-piperid- - Google Patents

N-(4-chloro)-cinnamoyl-(4'-hydroxy)-piperid-

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Publication number
CH532050A
CH532050A CH1710872A CH1710872A CH532050A CH 532050 A CH532050 A CH 532050A CH 1710872 A CH1710872 A CH 1710872A CH 1710872 A CH1710872 A CH 1710872A CH 532050 A CH532050 A CH 532050A
Authority
CH
Switzerland
Prior art keywords
sep
formula
hydroxy
chloro
cinnamic acid
Prior art date
Application number
CH1710872A
Other languages
German (de)
Inventor
Manfred Dr Kleemann
Wolfgang Dr Grell
Gerhard Dr Dahms
Hans Dr Machleidt
Albrecht Dr Eckenfels
Original Assignee
Thomae Gmbh Dr K
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 AT494669A external-priority patent/AT288388B/en
Application filed by Thomae Gmbh Dr K filed Critical Thomae Gmbh Dr K
Priority claimed from CH145172A external-priority patent/CH532045A/en
Publication of CH532050A publication Critical patent/CH532050A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C57/00Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
    • C07C57/52Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms containing halogen
    • C07C57/58Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms containing halogen containing six-membered aromatic rings
    • C07C57/60Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms containing halogen containing six-membered aromatic rings having unsaturation outside the rings
    • 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
    • C07D211/36Heterocyclic 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 hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D211/40Oxygen atoms
    • C07D211/44Oxygen atoms attached in position 4
    • C07D211/46Oxygen atoms attached in position 4 having a hydrogen atom as the second substituent in position 4

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Hydrogenated Pyridines (AREA)

Abstract

New N-(4-chloro)cinnamoyl-(4'-hydroxy)-piperazine is prepared by a) reacting a cinnamic acid deriv. of formula p-Cl-C6H4-CH=CH-COX (in which X is OH, NH, mono- or dialkylamino, or a reactive group) with 4-hydroxypiperidine, or a reactive deriv. of 4-hydroxypiperidine; b) or by reacting a cpd. of formula: (in which R is lower alkyl or (R1)3-P=CH-, where R1 is aryl or alkyl) with 4-chlorobenzaldehyde.

Description

  

  Verfahren zur Herstellung von neuen Zimtsäureamiden    Die Erfindung betrifft ein Verfahren zur Herstellung neuer Zimtsäureamide der Formel 1  
EMI0001.0000     
    in der Hal ein Chlor-, Brom- oder Jodatom bedeutet, das dadurch gekennzeichnet ist, dass man aus einer Verbindung  der Formel 2  Behan  deln  
EMI0001.0001     
    in der R Wasserstoff oder eine Alkylgruppe bedeutet, ROH  abspaltet.  



  Die Bildung einer Verbindung der Formel 1 durch  einer Verbindung der Formel 2 erfolgt mit Wasser- bzw.  alkoholabspaltenden Mitteln, beispielsweise     konzentrierter     Schwefelsäure, zweckmässigerweise bei Temperaturen     zwi-          oxy-piperidid    ) kann anschliessend in das entsprechende B-    schen 0  und 20 C.  



  Die bei dem erfindungsgemässen Verfahren verwendeten  Ausgangsstoffe lassen sich nach bekannten Methoden darstel  len.  



  Die Herstellung einer (B-Hydroxy-Verbindung der Formel 2  erfolgt z. B. durch Reduktion einer Verbindung der Formel  
EMI0001.0005     
    mit Natriumborhydrid und anschliessende alkalische Hydro  lyse. Das nach der Reduktion erhaltene     (3-Hydroxy-(4-acet-          oxy-piperidid)    kann anschliessend in das entsprechende B-    Chlor-Derivat mittels Phosphortrichlorid bzw. durch     anschlies-          sende    Umsetzung mit einem Alkohol bei erhöhter Temperatur  in das entsprechende     (3-Alkoxy-Derivat    überführt werden.      Bei dem erfindungsgemässen Verfahren erhält man in über  wiegendem Masse trans-Verbindungen der Formel 1.  



  Die erfindungsgemäss hergestellten neuen Zimtsäureamide  der Formel 1 besitzen wertvolle pharmakologische Eigenschaf  ten, insbesondere eine antiphlogistische und antipyretische  Wirkung.  



  Die Substanzen  
EMI0002.0000     
  
    A <SEP> = <SEP> 4-Chlor-zimtsäure-(4-hydroxypiperidid) <SEP> und
<tb>  B <SEP> = <SEP> 4-Brom-zimtsäure-(4-hydroxypiperidid)
<tb>  wurden <SEP> hinsichtlich <SEP> ihrer <SEP> antiphlogistischen <SEP> Wirkung
<tb>  im <SEP> Vergleich <SEP> zu
<tb>  C <SEP> = <SEP> Phenylbutazon
<tb>  und <SEP> hinsichtlich <SEP> ihrer <SEP> temperatursenkenden <SEP> Wirkung
<tb>  im <SEP> Vergleich <SEP> zu
<tb>  D <SEP> = <SEP> Aminopyrin <SEP> und
<tb>  E <SEP> = <SEP> Phenacetin <SEP> untersucht.       1. Die antiphlogistische Wirkung der zu untersuchenden  Substanzen wurde als antiexsudative Wirkung gegenüber dem  Carrageeninödem der Rattenhinterpfote nach der Methode  von Winter et al. (Proc. Soc. exper. Biol.

   Med. 111, 544-547  (1962)) und gegenüber dem Kaolinödem der Rattenhinter  pfote nach der Methode von Hillebrecht (Arzneimittelfor  schung, 4, 607-614 (1954)) nach oraler Gabe von mindestens  3 Dosen an mindestens 14 Tieren pro Dosis getestet.  



  Die Messung erfolgte nach der Methode von Doepfner und  Cerletti (Int. Arch. Allergy al appl. Immun. 12, 89-97  (1958)), es wurde die Dosis graphisch ermittelt, welche eine  35%-ige Abschwächung (ED35) der jeweiligen Schwellung  bewirkt:  
EMI0002.0001     
  
    Substanz <SEP> Carrageenin-Ödem <SEP> Kaolin-Ödem
<tb>  EDV <SEP> mg: <SEP> kg <SEP> ED35 <SEP> mg/kg
<tb>  A <SEP> 31 <SEP> 55
<tb>  B <SEP> 51 <SEP> 73
<tb>  C <SEP> 74 <SEP> 62       2. Die Prüfung auf eine temperatursenkende Wirkung der  zu untersuchenden Substanzen erfolgte an normothermen  Ratten nach oraler Gabe von mindestens 4 Dosen an minde  stens 10 Tieren pro Dosis.  



  Aus den mit den verschiedenen Dosen erzielten gemittelten  Werten für maximale Temperaturerniedrigung des Einzeltieres  wurde durch graphische Interpolation die Dosis     bestimmt,    die  eine Senkung der Körpertemperatur um 1,5 C (ED-1.5 c)  bewirkt:  
EMI0002.0003     
  
    Substanz
<tb>  ED-1,5 c <SEP> mg/kg
<tb>  A <SEP> 5,5
<tb>  B <SEP> 7,0
<tb>  D <SEP> 70
<tb>  E <SEP> 80       3. Die akute Troxizität der Substanzen A bis D wurde an  Gruppen zu mindestens je 10 Ratten mit mindestens 3 Dosen  pro Gruppe bestimmt.

   Es wurde die LD50, die Dosis bei deren  peroralen Verabreichung 50% der Tiere innerhalb 14 Tagen  verstarben, graphisch     bestimmt:     
EMI0002.0005     
  
    Substanz <SEP> LD50 <SEP> g. <SEP> kg
<tb>  A <SEP> -5,0
<tb>  B <SEP> -5,0
<tb>  C <SEP> 0,98
<tb>  D <SEP> 1,1
<tb>  E <SEP> 2,3       Die nachfolgenden Beispiele sollen die Erfindung näher  erläutern:  <I>Beispiel 1</I>  4-Brom-zimtsäure-(4-hydroxy-piperidid)  500 mg (1,5 m Mol)       ss-Hydroxy-ss-(4-bromphenyl)-          propionsäure-(4-hydroxy-piperidid)     [Schmp.: 100-103 C, hergestellt durch Hydrolyse von       ss-Hydroxy-ss-(4-bromphenyl)-          propionsäure-(4-acetoxy-piperidid)     mit Natriumhydroxyd in Äthanol] werden bei Raumtempera  tur in 7 ml konz.

   Schwefelsäure gelöst. Man lässt das Reak  tionsgemisch 24 Stunden stehen, gibt dann unter Eiskühlung  die vierfache Menge Eis zu und extrahiert mit Chloroform.  Der Chloroform-Extrakt wird mit Sodalösung gewaschen, über  Natriumsulfat getrocknet und i. Vak. eingedampft. Den Rück  stand unterwirft man einer Säulenchromatographie an Kiesel  gel (Chloroform/Aceton ='/,). Das erhaltene     4-Brom-zimt-          säure    (4-hydroxy-piperidid) wird aus Essigester umkristalli  siert.  



  Ausbeute: 90 mg (19% d. Th.); Schmp. 166-168 C (Misch  schmelzpunkt mit einer authentischen Probe: 166-168 C.  <I>Beispiel 2</I>  4-Brom-zimtsäure-(4-hydroxy piperidid)  Zu 900 mg (2,6 m Mol)       ss-Methoxy-ss-(4-bromphenyl)-          propionsäure-(4-hydroxy-piperidid)     [Ö1, hergestellt durch 7-stündiges Erhitzen von       ss-Chlor-ss-(4-bromphenyl)-          propionsäure-(4-acetoxy-piperidid)     in Methanol auf 150 C] werden unter Eiskühlung 14 ml konz.  Schwefelsäure gegeben. Nach Stehen über Nacht bei     0 C    wird  das Reaktionsgemisch im Eisbad mit 80 g Eis versetzt und  anschliessend mit Chloroform extrahiert.

   Die     Chloroform-          Phase    wird mit Sodalösung und mit Wasser gewaschen, über  Natriumsulfat getrocknet und i.     Vak.    eingedampft. Der Ein  dampfrückstand wird mit Äther verrieben. Man erhält 140 mg  (17% d.     Th.)        4-Brom-zimtsäure-(4-hydroxy-piperidid)    vom  Schmelzpunkt 164-166 C     (Mischschmelzpunkt    mit authenti  scher Probe     165-167 C).  



  Process for the production of new cinnamic acid amides The invention relates to a process for the production of new cinnamic acid amides of the formula 1
EMI0001.0000
    in which Hal denotes a chlorine, bromine or iodine atom, which is characterized in that a compound of formula 2 is treated
EMI0001.0001
    in which R is hydrogen or an alkyl group, ROH is split off.



  A compound of formula 1 is formed by a compound of formula 2 using agents that split off water or alcohol, for example concentrated sulfuric acid, conveniently at temperatures between oxy-piperidide) can then be converted to the corresponding range between 0 and 20 C.



  The starting materials used in the process according to the invention can be represented by known methods.



  A (B-hydroxy compound of the formula 2 is produced, for example, by reducing a compound of the formula
EMI0001.0005
    with sodium borohydride and subsequent alkaline hydrolysis. The (3-hydroxy- (4-acetoxy-piperidide) obtained after the reduction can then be converted into the corresponding B-chlorine derivative by means of phosphorus trichloride or by subsequent reaction with an alcohol at elevated temperature into the corresponding (3- In the process according to the invention, trans compounds of the formula 1 are predominantly obtained.



  The novel cinnamic acid amides of formula 1 prepared according to the invention have valuable pharmacological properties, in particular an anti-inflammatory and anti-pyretic effect.



  The substances
EMI0002.0000
  
    A <SEP> = <SEP> 4-chloro-cinnamic acid- (4-hydroxypiperidide) <SEP> and
<tb> B <SEP> = <SEP> 4-bromo-cinnamic acid- (4-hydroxypiperidide)
<tb> became <SEP> with regard to <SEP> their <SEP> anti-inflammatory <SEP> effect
<tb> in the <SEP> comparison <SEP> to
<tb> C <SEP> = <SEP> phenylbutazone
<tb> and <SEP> with regard to <SEP> their <SEP> temperature-lowering <SEP> effect
<tb> in the <SEP> comparison <SEP> to
<tb> D <SEP> = <SEP> aminopyrine <SEP> and
<tb> E <SEP> = <SEP> Phenacetin <SEP> examined. 1. The anti-inflammatory effect of the substances to be examined was determined as an anti-exudative effect against the carrageenin edema of the rat hind paw by the method of Winter et al. (Proc. Soc. Exper. Biol.

   Med. 111, 544-547 (1962)) and against kaolin edema of the rat hind paw by the Hillebrecht method (Arzneimittelfor research, 4, 607-614 (1954)) after oral administration of at least 3 doses to at least 14 animals per dose .



  The measurement was carried out according to the method of Doepfner and Cerletti (Int. Arch. Allergy al appl. Immun. 12, 89-97 (1958)); the dose was determined graphically, which resulted in a 35% reduction (ED35) of the respective Swelling causes:
EMI0002.0001
  
    Substance <SEP> carrageenin edema <SEP> kaolin edema
<tb> EDV <SEP> mg: <SEP> kg <SEP> ED35 <SEP> mg / kg
<tb> A <SEP> 31 <SEP> 55
<tb> B <SEP> 51 <SEP> 73
<tb> C <SEP> 74 <SEP> 62 2. The test for a temperature-lowering effect of the substances to be examined was carried out on normothermic rats after oral administration of at least 4 doses to at least 10 animals per dose.



  From the averaged values achieved with the various doses for the maximum decrease in temperature of the individual animal, the dose was determined by graphic interpolation that causes a decrease in body temperature by 1.5 C (ED-1.5 c):
EMI0002.0003
  
    substance
<tb> ED-1.5 c <SEP> mg / kg
<tb> A <SEP> 5.5
<tb> B <SEP> 7.0
<tb> D <SEP> 70
<tb> E <SEP> 80 3. The acute toxicity of substances A to D was determined in groups of at least 10 rats with at least 3 doses per group.

   The LD50, the dose of which 50% of the animals died within 14 days of oral administration, was determined graphically:
EMI0002.0005
  
    Substance <SEP> LD50 <SEP> g. <SEP> kg
<tb> A <SEP> -5.0
<tb> B <SEP> -5.0
<tb> C <SEP> 0.98
<tb> D <SEP> 1.1
<tb> E <SEP> 2,3 The following examples are intended to explain the invention in more detail: <I> Example 1 </I> 4-Bromo-cinnamic acid- (4-hydroxypiperidide) 500 mg (1.5 m mol) ss-Hydroxy-ss- (4-bromophenyl) propionic acid (4-hydroxypiperidide) [mp .: 100-103 C, prepared by hydrolysis of ss-hydroxy-ss- (4-bromophenyl) propionic acid (4 -acetoxy-piperidide) with sodium hydroxide in ethanol] are concentrated in 7 ml at room temperature.

   Dissolved sulfuric acid. The reaction mixture is left to stand for 24 hours, four times the amount of ice is then added while cooling with ice, and the mixture is extracted with chloroform. The chloroform extract is washed with soda solution, dried over sodium sulfate and i. Vac. evaporated. The residue is subjected to column chromatography on silica gel (chloroform / acetone = '/,). The 4-bromo-cinnamic acid (4-hydroxypiperidide) obtained is recrystallized from ethyl acetate.



  Yield: 90 mg (19% of theory); Melting point 166-168 C (mixed melting point with an authentic sample: 166-168 C. <I> Example 2 </I> 4-Bromo-cinnamic acid- (4-hydroxy piperidide) to 900 mg (2.6 m mol) ss-methoxy-ss- (4-bromophenyl) -propionic acid- (4-hydroxy-piperidid) [oil, prepared by heating ss-chloro-ss- (4-bromophenyl) -propionic acid- (4-acetoxy- piperidide) in methanol at 150 ° C.], 14 ml of concentrated sulfuric acid are added while cooling with ice. After standing overnight at 0 ° C., 80 g of ice are added to the reaction mixture in an ice bath and then extracted with chloroform.

   The chloroform phase is washed with soda solution and with water, dried over sodium sulfate and i. Vac. evaporated. The vapor residue is rubbed with ether. 140 mg (17% of theory) of 4-bromo-cinnamic acid (4-hydroxypiperidide) with a melting point of 164-166 ° C. (mixed melting point with authentic sample 165-167 ° C.) are obtained.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung neuer Zimtsäureamide der Formel 1 EMI0003.0000 in der Hal ein Chlor-, Brom- oder Jodatom bedeutet, dadurch gekennzeichnet, dass man aus einer Verbindung der Formel 2 EMI0003.0001 in der R Wasserstoff oder eine Alkylgruppe bedeutet, ROH abspaltet. Patentanspruch, und UNTERANSPRÜCHE gekennzeichnet, 1. Verfahren nach dass man die Umsetzung in einem Lösungsmittel durchführt. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man ROH mit Hilfe von Schwefelsäure abspaltet. 3. Verfahren nach Patentanspruch, und den vorangegange nen Unteransprüchen, dadurch gekennzeichnet, dass man die Abspaltung bei Temperaturen zwischen 0 und 20 C ausführt. PATENT CLAIM Process for the production of new cinnamic acid amides of Formula 1 EMI0003.0000 in which Hal denotes a chlorine, bromine or iodine atom, characterized in that a compound of formula 2 EMI0003.0001 in which R is hydrogen or an alkyl group, ROH is split off. Claim, and SUBClaims characterized 1. Process according to which the reaction is carried out in a solvent. 2. The method according to claim, characterized in that ROH is split off with the aid of sulfuric acid. 3. The method according to claim and the preceding claims, characterized in that the cleavage is carried out at temperatures between 0 and 20 C.
CH1710872A 1969-05-23 1969-10-28 N-(4-chloro)-cinnamoyl-(4'-hydroxy)-piperid- CH532050A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT494669A AT288388B (en) 1969-05-23 1969-05-23 Process for the preparation of a new cinnamic acid amide
CH145172A CH532045A (en) 1969-05-23 1969-10-28 Process for the preparation of new cinnamic acid amides

Publications (1)

Publication Number Publication Date
CH532050A true CH532050A (en) 1972-12-31

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CH1710872A CH532050A (en) 1969-05-23 1969-10-28 N-(4-chloro)-cinnamoyl-(4'-hydroxy)-piperid-

Country Status (1)

Country Link
CH (1) CH532050A (en)

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