BE523903A - - Google Patents

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Publication number
BE523903A
BE523903A BE523903DA BE523903A BE 523903 A BE523903 A BE 523903A BE 523903D A BE523903D A BE 523903DA BE 523903 A BE523903 A BE 523903A
Authority
BE
Belgium
Prior art keywords
piperazine
boiling point
base
residue
products
Prior art date
Application number
Other languages
French (fr)
Publication of BE523903A publication Critical patent/BE523903A/fr

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    • 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
    • C07D295/084Heterocyclic 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 with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings
    • C07D295/088Heterocyclic 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 with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings to an acyclic saturated chain

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



   H. MORREN, résidant   à; BRUXELLES.        



  NOUVELLES   N-MONOBENZHYDRYL-PIPERAZINE   SUBSTITUEES ET LEUR PROCEDE DE
PREPARATION. 



   Là présente invention se rapporte à des dérivés de la pipérazine de structure générale 
 EMI1.1 
 ou R représente un atome d'hydrogène ou de chlore, un groupe   -GEL ou   -OCH3 se trouvant en position para; n un chiffre entier inférieur à 7* 
Elle se rapporte également à un mode de préparation de ces pro- duits ainsi que de leurs sels. 



   Il a été trouvé que les produits de cette configuration possèdent une activité biologique considérable, surtout dans le domaine de l'allergie. 



  Ils sont capables de neutraliser un'nombre considérable de doses toxiques d'histamine et de maintenir cette activité pendant plusieurs jours. 



   Pour la préparation de ces produits, selon la présente invention, 
 EMI1.2 
 on fait réagir une 1-p-R benzhrdr. (oméga-hrdroaZcoi) pipérazine avec de l'oxyde d'éthylène selon le schéma 
 EMI1.3 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 Exemple 
Préparation de 
 EMI2.2 
 
 EMI2.3 
 A une solution toluénique de l-p-chlorbenzbydryl-4-(2-bydroxyéthyl)- pipérazine, on ajoute-une solution toluénique   d'oxyde   d'éthylène en quantité   équimoléculaire.. On   achève la réaction par chauffage en   autoclavevers   170 C. 



  La masse réactionnelle est ensuite rectifiée et on sépare la   1-p-chlorbenz-   
 EMI2.4 
 hydryl-4- [2-(2-hydroxyéthoxy)-étbyl J -pipérazine qui distille à 22D C/0, 5   mm   Hg. 



   Le dichlorhydrate correspondant est préparé par dissolution de la base ci-dessus dans environ 2 fois son poids d'alcool, en la traitant par un excès d'HC1 gazeux et en précipitant par l'éther. Le solvant est décanté et le résidu, dissous dans un minimum, d'alcool, cristallise par addition d'éther. Point de fusion du   dichlorhydrate     193 C.   



   -Les produits dont les formules suivent ont été préparés selon le 
 EMI2.5 
 procédé décrit dans l'exemple en utilisant la l-p-R-benzbydryl-4-(oméga- 3.ydroxralcori) pipérazine convenable 
 EMI2.6 
 Point d'ébullition de la base : 228 C/0,1 mm Hg. 
 EMI2.7 
 



  Point d'ébullition de la base: 208 C/0,1 mm Hg. 
 EMI2.8 
 



  Point d'ébullition de la base: 185 C.0,005 mm Hg. 
 EMI2.9 
 La I-p-R benzhpdxrl 1,.-(2 hrdroxét'hyi-pipérazine nécessaire pour l'obtention des produits décrits ci-dessus a été obtenue par chauffa- ge et agitation pendant environ 18 heures d'une solution alcoolique de 1 M. 
 EMI2.10 
 de N-mono-hydroéthyl-pipérazine et de 1,5 M. de chlorure de p-R-benzhy-   dryle   en présence de 1 M. de carbonate de sodium. On a ensuite évaporé l'al- cool sous vide, repris le résidu par de l'eau et extrait au benzène. Le ré - sidu d'évaporation du benzène a alors été rectifié sous vide. 

 <Desc/Clms Page number 3> 

 
 EMI3.1 
 
 EMI3.2 
 Point d'ébullition de la base: 218-220  C/0, 02 mm Hg. 



  Point de fusion du dichlorhydrate:   212 C.   
 EMI3.3 
 La 1-p--ahlorbenohydryl-4-(3-hydroxypropyl)-pipérazine servant de matière de départ pour l'obtention de ce produit a été préparée par   chauffa-   ge à reflux pendant 10 heures d'une solution de 0,4 M. de 3-chloropropanol- 1 et de 0,2 M. de   N-mono-p-chlorbenzhydryl-pipérazine   dans 100 cm3 de butanol- normal. Après avoir éliminé le solvant par distillation sous vide le résidu a été traité par 100 cm3 de solution aqueuse de soude éaustique à 15 % et extrait au benzène.

   Ce dernier a été chassé et, par rectification du résidu sous vide, on a obtenu, avec un rendement de 85   %,   la   1-p-chlorbenzhydryl-     4-(3-hydroxypropyl)-pipérazine   d'un point d'ébullition de 215 C/0,01 mm Hg. 
 EMI3.4 
 



  Point d'ébullition de la base :   248 C/0,005   mm Hg. 
 EMI3.5 
 



  La l-p-chlorbenzhydryl-4-( 6-hydroxyJiexyl) -pipérazine nécessaire pour-l'obtention de ce produit a été préparée comme le dérivé 3-hydroxypro- pyl correspondant'(voir ci-dessus) à partir de N-mono-p-chlorbenzhydryl-pi- pérazine et de 6-chlorohexanol-1. Le produit, obtenu avec un rendement de 90%, bout à   235 C/0,01   mm Hg.



   <Desc / Clms Page number 1>
 



   H. MORREN, residing in; BRUSSELS.



  NEW N-MONOBENZHYDRYL-PIPERAZINE SUBSTITUTES AND THEIR PROCESS FOR
PREPARATION.



   The present invention relates to piperazine derivatives of general structure
 EMI1.1
 or R represents a hydrogen or chlorine atom, a -GEL or -OCH3 group located in the para position; n a whole number less than 7 *
It also relates to a method of preparing these products as well as their salts.



   It has been found that products of this configuration possess considerable biological activity, especially in the field of allergy.



  They are able to neutralize a considerable number of toxic doses of histamine and maintain this activity for several days.



   For the preparation of these products, according to the present invention,
 EMI1.2
 a 1-p-R benzhrdr is reacted. (omega-hrdroaZcoi) piperazine with ethylene oxide according to the scheme
 EMI1.3
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 Example
Preparation of
 EMI2.2
 
 EMI2.3
 A toluene solution of 1-p-chlorbenzbydryl-4- (2-bydroxyethyl) - piperazine is added a toluene solution of ethylene oxide in an equimolecular amount. The reaction is completed by heating in an autoclave at 170 C.



  The reaction mass is then rectified and the 1-p-chlorbenz- is separated.
 EMI2.4
 hydryl-4- [2- (2-hydroxyethoxy) -étbyl J -piperazine which distils at 22D C / 0.5 mm Hg.



   The corresponding dihydrochloride is prepared by dissolving the above base in approximately 2 times its weight of alcohol, treating it with an excess of gaseous HCl and precipitating with ether. The solvent is decanted and the residue, dissolved in a minimum of alcohol, crystallizes on addition of ether. Melting point of dihydrochloride 193 C.



   -The products whose formulas follow have been prepared according to the
 EMI2.5
 process described in the example using the suitable 1-p-R-benzbydryl-4- (omega-3.ydroxralcori) piperazine
 EMI2.6
 Boiling point of the base: 228 C / 0.1 mm Hg.
 EMI2.7
 



  Boiling point of the base: 208 C / 0.1 mm Hg.
 EMI2.8
 



  Base boiling point: 185 C. 0.005 mm Hg.
 EMI2.9
 The I-p-R benzhpdxrl 1, .- (2 hrdroxét'hyi-piperazine necessary for obtaining the products described above was obtained by heating and stirring for about 18 hours of a 1M alcoholic solution.
 EMI2.10
 of N-mono-hydroethyl-piperazine and 1.5 M. of p-R-benzhy-dryl chloride in the presence of 1 M. of sodium carbonate. The alcohol was then evaporated in vacuo, the residue taken up in water and extracted with benzene. The benzene evaporation residue was then rectified under vacuum.

 <Desc / Clms Page number 3>

 
 EMI3.1
 
 EMI3.2
 Base boiling point: 218-220 C / 0.02 mm Hg.



  Melting point of the dihydrochloride: 212 C.
 EMI3.3
 The 1-p - ahlorbenohydryl-4- (3-hydroxypropyl) -piperazine as the starting material to obtain this product was prepared by heating under reflux for 10 hours of a 0.4 M solution. . of 3-chloropropanol-1 and of 0.2 M. of N-mono-p-chlorbenzhydryl-piperazine in 100 cm3 of normal butanol. After removing the solvent by vacuum distillation, the residue was treated with 100 cm3 of 15% aqueous sodium hydroxide solution and extracted with benzene.

   The latter was removed and, by stripping the residue under vacuum, 1-p-chlorbenzhydryl- 4- (3-hydroxypropyl) -piperazine with a boiling point of 215% was obtained in 85% yield. C / 0.01 mm Hg.
 EMI3.4
 



  Boiling point of the base: 248 C / 0.005 mm Hg.
 EMI3.5
 



  The lp-chlorbenzhydryl-4- (6-hydroxyJiexyl) -piperazine necessary for-obtaining this product was prepared as the corresponding 3-hydroxypropyl derivative (see above) from N-mono-p -chlorbenzhydryl-piperazine and 6-chlorohexanol-1. The product, obtained with a yield of 90%, boils at 235 C / 0.01 mm Hg.


    

Claims (1)

RESUME. ABSTRACT. 1 Nouvelles N-monobenzhydryl-pipérazines substituées EMI3.6 où R représente un atome d'hydrogène ou de chlore, un groupe -CH3 ou -OCH3 se trouvant en position para; n un chiffre entier inférieur à 7. 1 New substituted N-monobenzhydryl-piperazines EMI3.6 where R represents a hydrogen or chlorine atom, a -CH3 or -OCH3 group located in the para position; n an integer less than 7. 2 Procédé de préparation.. des composés selon 1 , caractérisé en ce que l'on EMI3.7 fait réagir une l-p-R-benzhydryl-4-(oméga-i\vdroxyalcoyl)-pipérazine avec l'oxyde d'éthylène. 2 Preparation process .. of the compounds according to 1, characterized in that one EMI3.7 reacts 1-p-R-benzhydryl-4- (omega-i \ vdroxyalkyl) -piperazine with ethylene oxide.
BE523903D BE523903A (en)

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144991A2 (en) * 1983-12-10 1985-06-19 Wako Pure Chemical Industries, Ltd. Polymethoxybenzyl piperazine derivatives, processes for their preparation and pharmaceutical compositions containing said derivatives

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144991A2 (en) * 1983-12-10 1985-06-19 Wako Pure Chemical Industries, Ltd. Polymethoxybenzyl piperazine derivatives, processes for their preparation and pharmaceutical compositions containing said derivatives
EP0144991A3 (en) * 1983-12-10 1985-07-17 Wako Pure Chemical Industries, Ltd. Polymethosybenzyl piperazine derivatives, processes for their preparation and pharmaceutical compositions containing said derivatives

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