CH507212A - Phenoxyalkyl amidines having blood pressure reducing - Google Patents

Phenoxyalkyl amidines having blood pressure reducing

Info

Publication number
CH507212A
CH507212A CH69870A CH6987067A CH507212A CH 507212 A CH507212 A CH 507212A CH 69870 A CH69870 A CH 69870A CH 6987067 A CH6987067 A CH 6987067A CH 507212 A CH507212 A CH 507212A
Authority
CH
Switzerland
Prior art keywords
phenoxyalkyl
amidines
blood pressure
pressure reducing
hydrogen
Prior art date
Application number
CH69870A
Other languages
German (de)
Inventor
Francis Hodson Harold
Winchester Randall Anthony
Original Assignee
Wellcome Found
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 GB27627/66A external-priority patent/GB1194183A/en
Application filed by Wellcome Found filed Critical Wellcome Found
Publication of CH507212A publication Critical patent/CH507212A/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/13Amines
    • A61K31/155Amidines (), e.g. guanidine (H2N—C(=NH)—NH2), isourea (N=C(OH)—NH2), isothiourea (—N=C(SH)—NH2)

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

(A) Phenoxyalkyl amidines of the general formula (I): where Z3 and Z4=hydrogen, halogen, alkoxy (1 to 4C atoms) or trifluoromethyl, but one of the two groups Z3 or Z4 must be hydrogen. (B) Pharmaceutical preparations contng. (I). The compounds have blood pressure reducing properties and are active orally.

Description

  

  
 



  Verfahren zur Herstellung von Propionamidinen
Die pharmakologische Wirkung der Phenoxyacetamidine ist schon   untersucht    worden. So beschreibt die Complete Specification des britischen Patentes Num mer 476 611   3-Methoxy-    und 4-Methoxyphenoxy- acetamidine als  brauchbare Arzneien , und die   Coin-    plete Specification   des      britischen    Patentes Nr. 654 521 beschreibt, dass Phenoxyacetamidin und   4-Ghiorphen-    oxyacetaniidin die   Kontraktionslamplitude    des Herzens von Tieren vergrössern. Weitere Arbeiten auf diesem Gebiet wurden von Craver, B. N. et al (J. Pharm.



   & Exp. Ther., 99, 1950, 353)   ausgeführt,    die die cardiale Wirkung von 4-Chlorphenoxyacetamidin und von dessen 3-Nitroderivat untersucht haben.



   Versuche haben nun gezeigt, dass die   Phenoxypro-    pionamidine der Formel
EMI1.1     
 worin eines von   Z3    und Z4 Wasserstoff, Halogen, Alk- oxy mit 1 bis 4 Kohlenstoffatomen   oder    den   Trifluor-      methylrest    und das andere Wasserstoff bedeutet, und ihre Säureadditionssalze den zentralen und peripherischen Pegel der   Catecholamine    reduzieren, z. B. den Noradrenalinpegel im Herzen und im Gehirn, ohne eine   depressive    Wirkung auf den sympathetischen Druck auszuüben. Sie sind daher   brauchbar bei    der Behandlung oder Prophylaxe von Bedingungen, unter denen die Catecholamine schädlich sind, z. B. bei   cardiaier      Arrhythmie.    Sie können daher z.

  B. bei der Behandlung ventricularer Fibrillation Verwendung finden.



   Besonders brauchbare Verbindungen der Formel I sind:
2-m-Methoxyphenoxypropionamidin   
2-m-Chtorphenoxypropionamidin
2-p-Chlorphenoxypropionamidin   
2-m-Trifluormethylphenoxypropionamidin
2-m-Fluorphenoxypropionamidin
2-m-Bromphenoxypropionamidin und deren Säureadditionssalze.



   Die   Verbindungen    der Formel I   werden    erfindungsgemäss hergestellt durch Umsetzung eines Imidicarbonylderivats der Formel
EMI1.2     
 mit Ammoniak. In dieser Formel ist das tautomere   Thioamid in    der einen Form   dargestellt.   



   Das Verfahrensprodukt ist in allen genannten Fäl   len    eine Base oder deren   Säureadditionssalz,    und man kann diese durch doppelte Umsetzung mit   einer    Säure oder deren Salz   oder    mit einer   Base    oder deren Salz in Salze bzw. Basen überführen. Dies kann in Lösung oder in einem Ionenaustauscher erfolgen, vor Isolierung oder nach erfolgter Isolierung und   Reinigung    des Pro- duktes. Man kann auf diese Weise z. B.   Hydrojodide,    Hydrochloride, Sulfate, Lactate, Citrate, Tartrate, Suc   einate,    Oxalate,   p-Toiiiolsulfonate,    p-Chlorbenzolsulfo- nate und Maleate der Basen herstellen.



   Die durchgeführten Versuche weisen darauf hin,   dass    die   wirksame    und brauchbare Dosierung der genannten Verbindungen bei Erwachsenen zwischen 20 und 200   rng/kg    Gewicht beträgt.



   Beispiel
5,4 g Quecksilberchlorid werden zu einer Lösung von 2,2 g 2-m-Chlorphenoxy(thiopropionamid) in 20   mi      trockenem      Methanol      zugegeben    und durch die Mischung 7 Stunden lang   Ammoniak    hindurchgeleitet.

 

  Das Gemisch wird filtriert und das Filtrat unter vermindertem Druck bei 25-30  C   eingedampft.    Der Rückstand wird in Wasser   gelöst,    mit einem Tropfen konzentrierter   Salzsäure      gerade    sauer   gemacht    und mit wässrigem 2n-Natrium-p-toluolsulfonat   behandelt.    Der ausgefallene Feststoff wird filtriert, mit Wasser gewaschen und im Vakuum getrocknet. Er hat einen   Schmelzpunkt von 197-206  C. Eine Umkristallisation aus einem Gemisch von Äthanol und Wasser ergibt    2-m-Chlorphenoxypropionlamidin-p-toluollsulfonat,    Schmelzpunkt 224-225  C, das mit einem nach einem anderen Verfahren hergestellten Material identisch ist. 



  
 



  Process for the preparation of propionamidines
The pharmacological effects of phenoxyacetamidines have already been investigated. For example, the Complete Specification of British Patent No. 476 611 describes 3-methoxy- and 4-methoxyphenoxyacetamidine as useful drugs, and the Coinplete Specification of British Patent No. 654 521 describes that phenoxyacetamidine and 4-ghiorphenoxyacetaniidine are the Increase the contraction amplitude of the heart of animals. Further work in this area has been done by Craver, B. N. et al (J. Pharm.



   & Exp. Ther., 99, 1950, 353), who examined the cardiac effects of 4-chlorophenoxyacetamidine and its 3-nitro derivative.



   Tests have now shown that the phenoxypropionamidines of the formula
EMI1.1
 wherein one of Z3 and Z4 is hydrogen, halogen, alkoxy with 1 to 4 carbon atoms or the trifluoromethyl radical and the other is hydrogen, and their acid addition salts reduce the central and peripheral level of the catecholamines, e.g. B. the norepinephrine level in the heart and brain without exerting a depressive effect on the sympathetic pressure. They are therefore useful in the treatment or prophylaxis of conditions in which the catecholamines are harmful, e.g. B. in cardiac arrhythmia. You can therefore z.

  B. found in the treatment of ventricular fibrillation use.



   Particularly useful compounds of the formula I are:
2-m-methoxyphenoxypropionamidine
2-m-chtorphenoxypropionamidine
2-p-chlorophenoxypropionamidine
2-m-trifluoromethylphenoxypropionamidine
2-m-fluorophenoxypropionamidine
2-m-bromophenoxypropionamidine and its acid addition salts.



   The compounds of the formula I are prepared according to the invention by reacting an imidicarbonyl derivative of the formula
EMI1.2
 with ammonia. In this formula, the tautomeric thioamide is shown in one form.



   In all cases mentioned, the process product is a base or its acid addition salt, and this can be converted into salts or bases by double reaction with an acid or its salt or with a base or its salt. This can be done in solution or in an ion exchanger, before isolation or after isolation and purification of the product. You can z. B. Hydroiodides, hydrochlorides, sulfates, lactates, citrates, tartrates, suc inate, oxalates, p-Toiiiolsulfonate, p-chlorobenzenesulfonates and maleates of the bases.



   The tests carried out indicate that the effective and usable dosage of the compounds mentioned is between 20 and 200 mg / kg weight in adults.



   example
5.4 g of mercury chloride are added to a solution of 2.2 g of 2-m-chlorophenoxy (thiopropionamide) in 20 ml of dry methanol and ammonia is passed through the mixture for 7 hours.

 

  The mixture is filtered and the filtrate is evaporated under reduced pressure at 25-30 ° C. The residue is dissolved in water, made just acidic with a drop of concentrated hydrochloric acid and treated with aqueous 2N sodium p-toluenesulfonate. The precipitated solid is filtered, washed with water and dried in vacuo. It has a melting point of 197-206 C. Recrystallization from a mixture of ethanol and water gives 2-m-chlorophenoxypropionlamidine-p-toluene sulfonate, melting point 224-225 ° C., which is identical to a material prepared by a different process.

 

Claims (1)

PATENTANSPRUCH PATENT CLAIM Verfahren zur Herstellung von Propionamidinen der Formel I EMI2.1 worin eines von Z3 und Z4 Wasserstoff, Halogen, Alkoxy mit 1 bis 4 Kohlenstoffatomen oder den Trifluormethylrest und das andere Wasserstoff bedeutet, oder von deren Säureadditionssalzen, gekennzeichnet durch die Umsetzung eines Imidicarbonylderivats der Formel EMI2.2 mit Ammoniak. Process for the preparation of propionamidines of the formula I. EMI2.1 wherein one of Z3 and Z4 is hydrogen, halogen, alkoxy having 1 to 4 carbon atoms or the trifluoromethyl radical and the other is hydrogen, or of their acid addition salts, characterized by the reaction of an imidicarbonyl derivative of the formula EMI2.2 with ammonia. UNTERANSPRUCH Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als Imidicarbonylderivat 2-m-Chlorphenoxythiopropionamid verwendet. SUBClaim Process according to patent claim, characterized in that 2-m-chlorophenoxythiopropionamide is used as the imidicarbonyl derivative.
CH69870A 1966-06-21 1967-06-15 Phenoxyalkyl amidines having blood pressure reducing CH507212A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB27627/66A GB1194183A (en) 1966-06-21 1966-06-21 Biologically Active Propionamidines and their preparation
CH849767A CH509273A (en) 1966-06-21 1967-06-15 Phenoxyalkyl amidines having blood pressure reducing

Publications (1)

Publication Number Publication Date
CH507212A true CH507212A (en) 1971-05-15

Family

ID=25703406

Family Applications (3)

Application Number Title Priority Date Filing Date
CH69770A CH521319A (en) 1966-06-21 1967-06-15 Process for the preparation of propionamidines
CH69870A CH507212A (en) 1966-06-21 1967-06-15 Phenoxyalkyl amidines having blood pressure reducing
CH69970A CH489477A (en) 1966-06-21 1967-06-15 Process for the preparation of propionamidines

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH69770A CH521319A (en) 1966-06-21 1967-06-15 Process for the preparation of propionamidines

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH69970A CH489477A (en) 1966-06-21 1967-06-15 Process for the preparation of propionamidines

Country Status (1)

Country Link
CH (3) CH521319A (en)

Also Published As

Publication number Publication date
CH489477A (en) 1970-04-30
CH521319A (en) 1972-04-15

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