CH504430A - Antibiotic SL 1846 derivs. - Google Patents

Antibiotic SL 1846 derivs.

Info

Publication number
CH504430A
CH504430A CH556668A CH556668A CH504430A CH 504430 A CH504430 A CH 504430A CH 556668 A CH556668 A CH 556668A CH 556668 A CH556668 A CH 556668A CH 504430 A CH504430 A CH 504430A
Authority
CH
Switzerland
Prior art keywords
antibiotic
semicarbazide
semicarbazone
iii
derivs
Prior art date
Application number
CH556668A
Other languages
German (de)
Inventor
Hans-Peter Dr Sigg
Christian Dr Stoll
Original Assignee
Sandoz Ag
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 Sandoz Ag filed Critical Sandoz Ag
Priority to CH556668A priority Critical patent/CH504430A/en
Priority to GB1258967D priority patent/GB1258967A/en
Priority to SE04242/69A priority patent/SE358638B/xx
Priority to US814388A priority patent/US3651007A/en
Priority to ES365985A priority patent/ES365985A1/en
Priority to BE731494D priority patent/BE731494A/xx
Priority to DE19691918794 priority patent/DE1918794A1/en
Priority to FR6911605A priority patent/FR2007462A1/fr
Priority to ES386986A priority patent/ES386986A1/en
Publication of CH504430A publication Critical patent/CH504430A/en
Priority to JP4558271A priority patent/JPS5013256B1/ja

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  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Saccharide Compounds (AREA)
  • Epoxy Compounds (AREA)

Abstract

(A) The cpds. (I), (II) and (III) (B) Medicaments contng. (I), (II) or (III). Antibody inhibitors useful in organ transplants, treatment of lupus erythematosus and certain forms of articular rheumatism. By reduction, oxidation and semicarbazide formation of the antibiotic (IV) known as SL 1846.

Description

  

  
 



  Verfahren zur Herstellung eines neuen Semicarbazons
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines neuen Semicarbazons der Formel I (siehe Formelblatt), dadurch gekennzeichnet, dass man das Antibioticum SL 1846 der Formel II mit Semicarbazid kondensiert.



   Vorzugsweise erfolgt die   erfindungsgeinässe    Kondensation, indem man die alkoholische Lösung eines Salzes des Semicarbazids, z.B.   Semicarbazid-hydrochlorid    in Methanol oder Äthanol, mit einem säurebindenden Mittel wie Natriumacetat, Kaliumcarbonat usw. versetzt, die erhaltene Semicarbazidlösung einer alkoholischen Lösung des Antibioticums SL 1846 zugibt und die Mischung während mehreren Stunden sich selbst überlässt. Das auf diese Weise erhaltene Semicarbazon des Antibioticums SL 1846 wird hierauf auf an sich bekannte Weise gereinigt.



   Das als Ausgangsprodukt benutzte Antibioticum SL 1846 kann gemäss Franz. Patentschrift Nr. 1503233 hergestellt werden.



   Das Semicarbazon des Antibioticums SL 1846 hemmt die Entstehung von Antikörpern und die Ausbildung zellulärer Immunitätsreaktionen, es kann deshalb zur Bekämpfung von Krankheiten und Zuständen Verwendung finden, welche mit unerwünschten Immunitätsreaktionen einhergehen. Das   Semlearbazon    des Antibioticums SL 1846 hemmt in Dosen von 2-120mg/kg/ Tag i.p. oder p.o. bei Mäusen, Ratten, Affen und Meerschweinchen, die mit Fremderythrozyten immunisiert wurden, die Bildung von Hämagglutininen stark oder vollständig. Ferner unterdrückt es die Symptome der experimentellen ,allergischen Encephalomyelitis bei Ratten und Kaninchen und verzögert die Abstossung von homologen Hauttransplantaten bei Mäusen. Die akute Toxizität vom Semicarbazon des Antibioticums SL 1846 bei der weissen Maus ist: DL-50    >     1000 mg/kg bei intraperitonealer Verabreichung.

  Die Tagesdosis des neuen Semicarbazons des Antibioticums beträgt etwa   10-500 mg.   



   Das Semicarbazon des Antibioticums SL 1846 kann als Arzneimittel allein oder in entsprechenden Arzneiformen für enterale oder parenterale Verabreichung verwendet werden. Zwecks Herstellung geeigneter Arzneiformen wird es mit anorganischen oder organischen, pharmakologisch indifferenten Hilfsstoffen verarbeitet.



   In dem nachfolgenden Beispiel, welches die Ausführung des Verfahrens erläutert, den Umfang der Erfindung aber in keiner Weise einschränken soll, erfolgen alle Temperaturangaben in Celsiusgraden.
EMI1.1     
  

 

  Beispiel:    4,log    Semicarbazid-hypochlorid und   6,2 g    Natriumacetat 3   H20    werden zerrieben, mit 60 ml abs. Methanol versetzt, filtriert und das Filtrat zur Lösung von 2g Antibioticum SL 1846 in 20 ml Methanol gegeben. Nach 20 Stunden bei 200 wird im Vakuum zur Trockne eingedampft. Der Rückstand wird an 70 g neutralem Aluminiumoxid, Aktivität III, chromatographiert: Elution mit Chloroform-Methanol   (99:1);    Fraktionengrösse 100 ml.



  Fraktionen 2-6 gaben ein reines Produkt, das in wenig Äther gelöst und zur 10-fachen Menge Pentan zugetropft wird, wobei ein kristalliner Niederschlag vom Smp. 87900 entsteht.



   IR.-Spektrum: s. Fig. 1. 



  
 



  Process for the production of a new semicarbazone
The present invention relates to a process for the preparation of a new semicarbazone of the formula I (see formula sheet), characterized in that the antibiotic SL 1846 of the formula II is condensed with semicarbazide.



   The condensation according to the invention is preferably carried out by adding the alcoholic solution of a salt of the semicarbazide, e.g. Semicarbazide hydrochloride in methanol or ethanol, mixed with an acid-binding agent such as sodium acetate, potassium carbonate, etc., add the resulting semicarbazide solution to an alcoholic solution of the antibiotic SL 1846 and the mixture leaves itself for several hours. The semicarbazone of the antibiotic SL 1846 obtained in this way is then purified in a manner known per se.



   The antibiotic SL 1846 used as the starting product can be produced in accordance with French patent specification no.



   The semicarbazone of the antibiotic SL 1846 inhibits the development of antibodies and the development of cellular immunity reactions. It can therefore be used to combat diseases and conditions that are associated with undesirable immunity reactions. The semlearbazon of the antibiotic SL 1846 inhibits i.p. in doses of 2-120 mg / kg / day. or p.o. in mice, rats, monkeys and guinea pigs immunized with foreign erythrocytes, the formation of hemagglutinins is strong or complete. It also suppresses the symptoms of experimental allergic encephalomyelitis in rats and rabbits and delays the rejection of homologous skin grafts in mice. The acute toxicity of the semicarbazone of the antibiotic SL 1846 in the white mouse is: DL-50> 1000 mg / kg with intraperitoneal administration.

  The daily dose of the new semicarbazone of the antibiotic is about 10-500 mg.



   The semicarbazone of the antibiotic SL 1846 can be used as a drug alone or in appropriate drug forms for enteral or parenteral administration. In order to produce suitable dosage forms, it is processed with inorganic or organic, pharmacologically indifferent auxiliary substances.



   In the following example, which explains the implementation of the method but is not intended to restrict the scope of the invention in any way, all temperatures are given in degrees Celsius.
EMI1.1
  

 

  Example: 4, log semicarbazide hypochlorite and 6.2 g sodium acetate 3 H20 are triturated, with 60 ml abs. Methanol is added, the mixture is filtered and the filtrate is added to the solution of 2 g of antibiotic SL 1846 in 20 ml of methanol. After 20 hours at 200, the mixture is evaporated to dryness in vacuo. The residue is chromatographed on 70 g of neutral aluminum oxide, activity III: elution with chloroform-methanol (99: 1); Fraction size 100 ml.



  Fractions 2-6 gave a pure product, which was dissolved in a little ether and 10 times the amount of pentane was added dropwise, a crystalline precipitate of melting point 87900 being formed.



   IR spectrum: s. Fig. 1.

 

Claims (1)

PATENTANSPRUCH PATENT CLAIM Verfahren zur Herstellung eines neuen Semicarbazons der Formel I (siehe Formelblatt), dadurch gekennzeichnet, dass man das Antibioticum SL 1846 der Formel II mit Semicarbazid kondensiert. Process for the production of a new semicarbazone of the formula I (see formula sheet), characterized in that the antibiotic SL 1846 of the formula II is condensed with semicarbazide.
CH556668A 1968-04-16 1968-04-16 Antibiotic SL 1846 derivs. CH504430A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
CH556668A CH504430A (en) 1968-04-16 1968-04-16 Antibiotic SL 1846 derivs.
GB1258967D GB1258967A (en) 1968-04-16 1969-03-14
SE04242/69A SE358638B (en) 1968-04-16 1969-03-26
US814388A US3651007A (en) 1968-04-16 1969-04-08 Epoxides
ES365985A ES365985A1 (en) 1968-04-16 1969-04-14 Epoxides
BE731494D BE731494A (en) 1968-04-16 1969-04-14
DE19691918794 DE1918794A1 (en) 1968-04-16 1969-04-14 Process for the preparation of previously unknown derivatives of an antibiotic
FR6911605A FR2007462A1 (en) 1968-04-16 1969-04-15
ES386986A ES386986A1 (en) 1968-04-16 1971-01-02 Procedure for obtaining an antibiotic. (Machine-translation by Google Translate, not legally binding)
JP4558271A JPS5013256B1 (en) 1968-04-16 1971-06-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH556668A CH504430A (en) 1968-04-16 1968-04-16 Antibiotic SL 1846 derivs.

Publications (1)

Publication Number Publication Date
CH504430A true CH504430A (en) 1971-03-15

Family

ID=4295725

Family Applications (1)

Application Number Title Priority Date Filing Date
CH556668A CH504430A (en) 1968-04-16 1968-04-16 Antibiotic SL 1846 derivs.

Country Status (3)

Country Link
JP (1) JPS5013256B1 (en)
CH (1) CH504430A (en)
ES (1) ES386986A1 (en)

Also Published As

Publication number Publication date
ES386986A1 (en) 1975-02-16
JPS5013256B1 (en) 1975-05-19

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