BE877510Q - NEW ESTERS OF 1- (P-HYDROXY-PHENYL) -2- (1'-METHYL-2'-PHENOXYETHYLAMINO) -1-PROPANOL, THEIR THERAPEUTIC APPLICATION AND THEIR PROCESS FOR PREPARATION - Google Patents

NEW ESTERS OF 1- (P-HYDROXY-PHENYL) -2- (1'-METHYL-2'-PHENOXYETHYLAMINO) -1-PROPANOL, THEIR THERAPEUTIC APPLICATION AND THEIR PROCESS FOR PREPARATION

Info

Publication number
BE877510Q
BE877510Q BE0/196149A BE196149A BE877510Q BE 877510 Q BE877510 Q BE 877510Q BE 0/196149 A BE0/196149 A BE 0/196149A BE 196149 A BE196149 A BE 196149A BE 877510 Q BE877510 Q BE 877510Q
Authority
BE
Belgium
Prior art keywords
emi
propanol
compound
pharmaceutically acceptable
hydroxy
Prior art date
Application number
BE0/196149A
Other languages
French (fr)
Original Assignee
Luso Farmaco Inst
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 ES458824A external-priority patent/ES458824A1/en
Application filed by Luso Farmaco Inst filed Critical Luso Farmaco Inst
Application granted granted Critical
Publication of BE877510Q publication Critical patent/BE877510Q/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C213/00Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
    • C07C213/02Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions involving the formation of amino groups from compounds containing hydroxy groups or etherified or esterified hydroxy groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

       

   <EMI ID=1.1> 

  
xyéthylamino)-l-propanol, leur application en thérapeutique et leur procédé de préparation"

  
La présente invention a trait à des esters de 1- (p-hydroxy

  
 <EMI ID=2.1> 

  
à la formule :

  

 <EMI ID=3.1> 
 

  
 <EMI ID=4.1> 

  
dans laquelle R , R , et R sont identiques ou différents, chacun représentant un groupa alkyle possédant de 1 à 4 atomes de carbone.

  
 <EMI ID=5.1> 

  
logiques étonnamment supérieures à celles du composé hydroxy cor-

  
 <EMI ID=6.1> 

  
éthylamino)-l-propanol (isoxysuprine) :

  

 <EMI ID=7.1> 


  
En effet, bien que ce dernier possède une valeur thérapeutique éprouvée et soit parmi les meilleurs vasodilatateurs reconnus., il possède l'inconvénient d'avoir une activité de courte vie d'où la nécessité de nombreuses administrations. Ceci entraîne de courtes périodes de dilatation intense suivies de périodes de restriction du débit sanguin; une dilatation vasculaire continue et uniforme assurerait une oxygénation optimale et par là même un traitement plus efficace.

  
On a trouvé à présent qu'en utilisant les nouveaux esters de formule I, on pouvait obtenir une dilatation vasculaire suffisamment intense et de très longue durée. Selon la présente invention, les esters de formule I sont préparés par estérification de la fonc-

  
 <EMI ID=8.1> 

  
éthylamino)-l-propanol (II) avec les dérivés fonctionnels réactifs des acides aliphatiques de formule III, par exemple les chlorures, bromures, et anhydrides.

  

 <EMI ID=9.1> 


  
 <EMI ID=10.1> 

  
ci-dessus. L'estérification peut s'effectuer dans un solvant non  polaire (tel que benzène, toluène, ou hydrocarbures aromatiques   <EMI ID=11.1> 

  
analogues) au reflux et en présence d'une base organique, par exemple la triéthylamine, ou dans la pyridine à température ambiante. Le tableau suivant contient quelques données relatives à l'activité

  
 <EMI ID=12.1> 

  
(LR 693) par rapport à celle du 1-(p-hydroxyphényl)-2-(l'-méthyl-

  
 <EMI ID=13.1> 

  
guine 1 à 2 jours après l'insertion d'un cathéter dans l'artère abdo-; minale, d'après la technique de J.R. Weeks et J.A. Jones (Proc. Soc. Exp. Biol., 104, 646, 1960). 

  

 <EMI ID=14.1> 


  
KG = poids de corps. 

  
 <EMI ID=15.1> 

  
culte d'évaluer précisément un rétablissement à 75 % d'une pression  diminuée seulement de 9mm Hg. 

  
A partir des composés de formule I, on peut préparer des  sels pharmaceutiquement acceptables de la manière habituelle avec  des acides minéraux, par exemple l'acide chlorhydrique, bromhydrique  sulfurique, ou nitrique, ou avec des acides organiques, par exemple: 

  
 <EMI ID=16.1> 

  
lactique. 

  
 <EMI ID=17.1> 

  
traiter les troubles vasculaires fonctionnels et organiques de la  circulation périphérique ou comme relaxants utérins. Ils peuvent être  administrés par voie orale, rectale ou par injection en utilisant une  formulation pharmaceutique appropriée sous forme solide. liquide ou  de suspension (par exemple : comprimés, capsules, ampoules, sirops ou suppositoires) à des doses journalières allant de 0,030 à 0,090 g.

  
La présente invention sera illustrée en outre par les exemples suivants .

Exemple 1

  
 <EMI ID=18.1> 

  
 <EMI ID=19.1> 

  
pivaloyle. Le mélange est ensuite agité pendant 2 heures à tempéra- 

  
 <EMI ID=20.1> 

  
cristallin, point de fusion 153-155[deg.]C. 

Exemple 2 

  
 <EMI ID=21.1> 

  
 <EMI ID=22.1> 

  
le mélange à reflux pendant 10 heures. Le précipité solide résultant est alors isolé par filtration et la solution de benzène est évaporée



   <EMI ID = 1.1>

  
xyethylamino) -l-propanol, their therapeutic application and their preparation process "

  
The present invention relates to esters of 1- (p-hydroxy

  
 <EMI ID = 2.1>

  
to the formula:

  

 <EMI ID = 3.1>
 

  
 <EMI ID = 4.1>

  
wherein R, R, and R are the same or different, each representing an alkyl group having 1 to 4 carbon atoms.

  
 <EMI ID = 5.1>

  
surprisingly superior to those of the hydroxy compound

  
 <EMI ID = 6.1>

  
ethylamino) -l-propanol (isoxysuprine):

  

 <EMI ID = 7.1>


  
Indeed, although the latter has proven therapeutic value and is among the best recognized vasodilators, it has the disadvantage of having a short-lived activity hence the need for numerous administrations. This results in short periods of intense dilation followed by periods of restriction in blood flow; continuous and uniform vascular dilation would ensure optimal oxygenation and hence more effective treatment.

  
It has now been found that by using the new esters of formula I, a sufficiently intense and very long lasting vascular dilation can be obtained. According to the present invention, the esters of formula I are prepared by esterification of the function.

  
 <EMI ID = 8.1>

  
ethylamino) -1-propanol (II) with reactive functional derivatives of aliphatic acids of formula III, for example chlorides, bromides, and anhydrides.

  

 <EMI ID = 9.1>


  
 <EMI ID = 10.1>

  
above. Esterification can be carried out in a non-polar solvent (such as benzene, toluene, or aromatic hydrocarbons <EMI ID = 11.1>

  
analogues) under reflux and in the presence of an organic base, for example triethylamine, or in pyridine at room temperature. The following table contains some data relating to the activity

  
 <EMI ID = 12.1>

  
(LR 693) compared to that of 1- (p-hydroxyphenyl) -2- (l'-methyl-

  
 <EMI ID = 13.1>

  
guinea 1 to 2 days after insertion of a catheter into the abdominal artery; minale, according to the technique of J.R. Weeks and J.A. Jones (Proc. Soc. Exp. Biol., 104, 646, 1960).

  

 <EMI ID = 14.1>


  
KG = body weight.

  
 <EMI ID = 15.1>

  
cult to accurately assess a 75% recovery from a pressure reduced by only 9mm Hg.

  
From the compounds of formula I, pharmaceutically acceptable salts can be prepared in the usual way with mineral acids, for example hydrochloric, sulfuric hydrobromic or nitric acid, or with organic acids, for example:

  
 <EMI ID = 16.1>

  
lactic.

  
 <EMI ID = 17.1>

  
to treat functional and organic vascular disorders of the peripheral circulation or as uterine relaxants. They can be administered orally, rectally or by injection using an appropriate pharmaceutical formulation in solid form. liquid or suspension (for example: tablets, capsules, ampoules, syrups or suppositories) in daily doses ranging from 0.030 to 0.090 g.

  
The present invention will be further illustrated by the following examples.

Example 1

  
 <EMI ID = 18.1>

  
 <EMI ID = 19.1>

  
pivaloyl. The mixture is then stirred for 2 hours at temperature.

  
 <EMI ID = 20.1>

  
crystalline, melting point 153-155 [deg.] C.

Example 2

  
 <EMI ID = 21.1>

  
 <EMI ID = 22.1>

  
the mixture at reflux for 10 hours. The resulting solid precipitate is then isolated by filtration and the benzene solution is evaporated.


    

Claims (1)

<EMI ID=23.1> <EMI ID = 23.1> cristallisé dans 230 ml d'éthanol pour donner 13,5 g de solide blanc et cristallin, point de fusion 153-155[deg.]C. crystallized from 230 ml of ethanol to give 13.5 g of a white crystalline solid, melting point 153-155 [deg.] C. Exemple Example On prépare des comprimés en mélangeant 0,03 g du composé LR 693 et 1,97 g d'amidon et de talc. Tablets are prepared by mixing 0.03 g of compound LR 693 and 1.97 g of starch and talc. Exemple 4 Example 4 On prépare des ampoules pour mise en suspension de 0,03 g du composé LR 693 dans 2 ml d'eau doublent distillée, scellement de l'ampoule et stérilisation de celle-ci dans un autoclave. Ampoules are prepared for suspending 0.03 g of compound LR 693 in 2 ml of double distilled water, sealing the ampoule and sterilizing it in an autoclave. REVENDICATIONS <EMI ID=24.1> <EMI ID = 24.1> 1. A titre de produit industriel nouveau,un composé répondant à la formule : 1. As a new industrial product, a compound corresponding to the formula: <EMI ID=25.1> <EMI ID = 25.1> <EMI ID=26.1> <EMI ID = 26.1> sentent chacun un groupe alkyle possédant de 1 à 4 atomes de carbone ou un de leurs sels pharmaceutiquement acceptables. each has an alkyl group having 1 to 4 carbon atoms or a pharmaceutically acceptable salt thereof. <EMI ID=27.1> <EMI ID = 27.1> propanol ou un de ses sels pharmaceutiquement acceptables. propanol or a pharmaceutically acceptable salt thereof. 3. Procédé de préparation d'un composé selon la revendi- cation 1, caractérisé en ce qu'il consiste à faire réagir le 3. Process for preparing a compound according to claim 1, characterized in that it consists in reacting the <EMI ID=28.1> <EMI ID = 28.1> un acide de formule : an acid of formula: <EMI ID=29.1> <EMI ID = 29.1> <EMI ID=30.1> <EMI ID = 30.1> un de ses dérivés fonctionnels réactifs. <EMI ID=31.1> one of its reactive functional derivatives. <EMI ID = 31.1> le dérivé fonctionnel réactif est un chlorure d'acide, un bromure d'acide ou un anhydride d' acide . the reactive functional derivative is an acid chloride, an acid bromide or an acid anhydride. 5. A titre de médicament,une composition contenant un com- posé selon la revendication 1 combiné à au moins un support ou un diluant pharmaceutiquement acceptable. 5. As a medicament, a composition containing a compound according to claim 1 combined with at least one pharmaceutically acceptable carrier or diluent. 6. A titre de méd icament,une composition contenant le 6. As a medicament, a composition containing the <EMI ID=32.1> <EMI ID = 32.1> acceptable. acceptable.
BE0/196149A 1977-05-16 1979-07-05 NEW ESTERS OF 1- (P-HYDROXY-PHENYL) -2- (1'-METHYL-2'-PHENOXYETHYLAMINO) -1-PROPANOL, THEIR THERAPEUTIC APPLICATION AND THEIR PROCESS FOR PREPARATION BE877510Q (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES458824A ES458824A1 (en) 1976-05-17 1977-05-16 Esters of 1-(p-hydroxyphenyl)-2-(1{40 -methyl-2{40 -phenoxyethylamino)-1-propanol

Publications (1)

Publication Number Publication Date
BE877510Q true BE877510Q (en) 1979-11-05

Family

ID=8473785

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/196149A BE877510Q (en) 1977-05-16 1979-07-05 NEW ESTERS OF 1- (P-HYDROXY-PHENYL) -2- (1'-METHYL-2'-PHENOXYETHYLAMINO) -1-PROPANOL, THEIR THERAPEUTIC APPLICATION AND THEIR PROCESS FOR PREPARATION

Country Status (1)

Country Link
BE (1) BE877510Q (en)

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ISTITUTO LUSO FARMACO D'ITALIA S.P.A.

Effective date: 19900731