CH290452A - Process for the preparation of a novel derivative of α-naphthylamine-4-sulfonic acid. - Google Patents

Process for the preparation of a novel derivative of α-naphthylamine-4-sulfonic acid.

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Publication number
CH290452A
CH290452A CH290452DA CH290452A CH 290452 A CH290452 A CH 290452A CH 290452D A CH290452D A CH 290452DA CH 290452 A CH290452 A CH 290452A
Authority
CH
Switzerland
Prior art keywords
naphthylamine
sub
preparation
dehydrating agent
sulfonic acid
Prior art date
Application number
Other languages
French (fr)
Inventor
Anonyme Laboratoires O Societe
Original Assignee
Om Lab Sa
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 Om Lab Sa filed Critical Om Lab Sa
Publication of CH290452A publication Critical patent/CH290452A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07HSUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H15/00Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
    • C07H15/20Carbocyclic rings
    • C07H15/203Monocyclic carbocyclic rings other than cyclohexane rings; Bicyclic carbocyclic ring systems

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Molecular Biology (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Procédé de préparation d'un nouveau dérivé de l'acide     a-naphthylamine-4-sulfonique.       On a trouvé que les nouveaux dérivés de  l'acide     a-naphthylamine-4-sulfonique,    répon  dant à la     formule    donnée ci-dessous, sont  doués de propriétés thérapeutiques intéres  santes.

    
EMI0001.0004     
         Dans    cette formule,     R    est un radical d'hy  drate de carbone, par exemple celui     d'un     monosaccharide, tel que le glucose, 1e galac  tose, le     xylose,        celui    d'un polysaccharide, et     g     est un atome d'hydrogène ou un atome d'un  métal monovalent, tel que le sodium, ou un  équivalent     d'un    métal polyvalent, tel que le  calcium ou un radical organique ou encore  un groupe     amino    ou     amido.     



  Ces composés sont efficaces dans le traite  ment et la prévention des hémorragies, ils  augmentent la vitesse de     coagulation    du sang  et réduisent le temps de saignement; de plus,  ils sont     dépourvus    de toxicité.  



  Le présent brevet a donc pour objet un  procédé de préparation d'un de ces nouveaux  dérivés, à savoir le     glueoside    de     l'a-naphthyl-          amine-4-sulfonate    de sodium. Ce procédé est  caractérisé en ce que l'on condense du glucose  avec de     l'a-naphthylamine-4-sulfonate    de so  dium.    Cette condensation peut être effectuée au  sein d'un dissolvant, lequel peut être de l'eau  ou de préférence     un    dissolvant anhydre; elle  peut aussi être exécutée en l'absence de tout  dissolvant ou autre corps.

   On peut l'effectuer  à l'aide de la chaleur; en présence d'un agent  déshydratant, tel que .le chlorure d'ammo  nium, le bisulfate de     potassium,    le chlorure  de     zinc    ou un autre sel de propriétés ana  logues.     _     Voici, à titre d'exemple, comment le pro  cédé du présent brevet peut être exécuté:

    On fait     réagir    12,26 g     d'a-naphthylamine-          4-sulfonate    de sodium anhydre avec 10 g de  glucose anhydre     dans    600     ems    d'alcool ab  solu en présence     d'un    gramme de     chlorure          d'ammonium.    On chauffe à ébullition à re  flux au bain de vapeur, tout en agitant le mé  lange réactionnel continuellement pendant  deux heures.

   On laisse     ensuite    refroidir, il se  forme une masse cristalline que l'on isole par  filtration, on la lave à. l'alcool et     l'essore.    On  obtient une masse     cristalline    très soluble dans  l'eau, peu soluble dans l'alcool et dans l'éther.  Ce produit se décompose sans fondre vers  200  C, et son pouvoir rotatoire est de  
EMI0001.0035     
    Ses solutions     aqueuses    sont stables à la tempé  rature ordinaire, même à des pH bas, comme  celui du suc gastrique. Il est utilisable en  thérapeutique.



  Process for the preparation of a novel derivative of α-naphthylamine-4-sulfonic acid. It has been found that the new derivatives of α-naphthylamine-4-sulfonic acid, corresponding to the formula given below, are endowed with valuable therapeutic properties.

    
EMI0001.0004
         In this formula, R is a carbohydrate radical, for example that of a monosaccharide, such as glucose, galac tose, xylose, that of a polysaccharide, and g is a hydrogen atom or an atom of a monovalent metal, such as sodium, or an equivalent of a polyvalent metal, such as calcium or an organic radical or else an amino or amido group.



  These compounds are effective in the treatment and prevention of hemorrhages, they increase the rate of blood clotting and reduce the bleeding time; moreover, they are devoid of toxicity.



  The subject of the present patent is therefore a process for preparing one of these new derivatives, namely glueoside of sodium α-naphthylamine-4-sulfonate. This process is characterized in that glucose is condensed with sodium α-naphthylamine-4-sulfonate. This condensation can be carried out in a solvent, which can be water or preferably an anhydrous solvent; it can also be performed in the absence of any solvent or other substance.

   It can be done using heat; in the presence of a dehydrating agent, such as ammonium chloride, potassium bisulfate, zinc chloride or another salt of similar properties. _ Here is, by way of example, how the process of this patent can be carried out:

    12.26 g of anhydrous sodium α-naphthylamine-4-sulfonate are reacted with 10 g of anhydrous glucose in 600 ems of absolute alcohol in the presence of one gram of ammonium chloride. The mixture is heated to a reflux boiling point in a steam bath, while stirring the reaction mixture continuously for two hours.

   Then allowed to cool, a crystalline mass is formed which is isolated by filtration and washed with. alcohol and wring it out. A crystalline mass is obtained which is very soluble in water, slightly soluble in alcohol and in ether. This product decomposes without melting at around 200 C, and its rotatory power is
EMI0001.0035
    Its aqueous solutions are stable at room temperature, even at low pHs, such as that of gastric juice. It can be used in therapy.

 

Claims (1)

REVENDICATION: Procédé de préparation du glucoside de l'a-naphthylamine-4-sulfonate de sodium, ca ractérisé en ce' que l'on condense du glucose avec de l'a-naphthylamine-4-sulfonate de so dium. Le composé obtenu est cristallin, très soluble dans l'eau, peu soluble dans l'alcool et l'éther,, il fond vers 200 C en se décompo sant, son pouvoir rotatoire est de EMI0002.0004 ses solutions aqueuses'sont stables à la tem pérature ordinaire, même à des pH bas; il est utilisable en thérapeutique. CLAIM: Process for the preparation of sodium α-naphthylamine-4-sulfonate glucoside, characterized in that glucose is condensed with sodium α-naphthylamine-4-sulfonate. The compound obtained is crystalline, very soluble in water, sparingly soluble in alcohol and ether, it melts at around 200 ° C. while decomposing, its rotatory power is EMI0002.0004 its aqueous solutions are stable at room temperature, even at low pH; it can be used in therapy. SOUS-REVENDICATIONS 1. Procédé selon la revendication, caracté risé en ce que l'on -effectue la condensation dans un dissolvant. 2. Procédé selon la revendication, caracté- risé en. ce que l'on effectue la condensation en présence d'un agent déshydratant. 3. Procédé selon la revendication, caracté risé en ce que l'on effectue la condensation à l'aide de la chaleur. 4. Procédé selon la revendication et la sous-revendication 2, caractérisé en ce que le dit agent déshydratant est le chlorure d'am monium. 5. SUB-CLAIMS 1. A method according to claim, characterized in that the condensation is carried out in a solvent. 2. Method according to claim, characterized in. that the condensation is carried out in the presence of a dehydrating agent. 3. Method according to claim, characterized in that the condensation is carried out using heat. 4. Method according to claim and sub-claim 2, characterized in that said dehydrating agent is ammonium chloride. 5. Procédé selon la revendication et la sous-revendication 2, caractérisé en ce que le dit agent déshydrant est le bisulfate de po tassium. 6. Procédé selon la revendication et la sous-revendication 2, caractérisé en ce que le dit agent déshydratant est le chlorure de zinc. Process according to claim and sub-claim 2, characterized in that said dehydrating agent is potassium bisulfate. 6. Method according to claim and sub-claim 2, characterized in that said dehydrating agent is zinc chloride.
CH290452D 1951-04-20 1951-04-20 Process for the preparation of a novel derivative of α-naphthylamine-4-sulfonic acid. CH290452A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH290452T 1951-04-20

Publications (1)

Publication Number Publication Date
CH290452A true CH290452A (en) 1953-04-30

Family

ID=4487075

Family Applications (1)

Application Number Title Priority Date Filing Date
CH290452D CH290452A (en) 1951-04-20 1951-04-20 Process for the preparation of a novel derivative of α-naphthylamine-4-sulfonic acid.

Country Status (1)

Country Link
CH (1) CH290452A (en)

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