CH246895A - Process for the preparation of a solution of a derivative of a medicinal substance suitable for injection. - Google Patents
Process for the preparation of a solution of a derivative of a medicinal substance suitable for injection.Info
- Publication number
- CH246895A CH246895A CH246895DA CH246895A CH 246895 A CH246895 A CH 246895A CH 246895D A CH246895D A CH 246895DA CH 246895 A CH246895 A CH 246895A
- Authority
- CH
- Switzerland
- Prior art keywords
- solution
- injection
- derivative
- preparation
- medicinal substance
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/16—Amides, e.g. hydroxamic acids
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)
- Medicinal Preparation (AREA)
Description
Verfahren zur Herstellung einer zur Injektion geeigneten Lösung eines Derivates eines Heilstoffes. Das p-Amino-benzolsulfonamid und seine als Heilmittel verwendeten Derivate sind zumeist in Wasser wenig löslich und des halb für Injektionen ungeeignet.
Es wurde nun gefunden, dass sich solche Sulfonamide, die ausser an der freien p-ständigen, Amino- gruppe noch an einer anderweitigen Stelle des Moleküls ein leicht substituierbares Was serstoffatom aufweisen, in einer wässerigen Lösung einer Hegose, z. B. Glukose, Galak- tose, Mannose, und eines Bisulfites, z. B.
Na trium-, Kalium-, Ammomumbisulfit, oder in einer wässerigen Lösung eines a-oxy-alkyl- sulfinsauren Salzes (Alkali- oder Ammonium- salz) zu einer mindestens nahezu neutralen, für Injektionen verwendbaren Lösung auf lösen lassen. Injektionslösungen von beson ders hoher Konzentration können mit Hilfe der Bisulfite bezw. a-Oxy-alkylsulfinate von Aminen, z.
B. von Diäthylamin, Diäthanol- amin, Morpholin, erhalten werden.
Gegenstand der Erfindung ist ein Ver fahren zur Herstellung einer zur Injektion geeigneten Lösung eines neuen Derivates des bekannten p-Amino-benzolsulfonamids, wel ches dadurch gekennzeichnet ist, dass man 1 Mol p-Amino-benzolsulfonamid und minde stens 2 Mole oxy-methylsulfinsaures Natrium in wässerigem Medium aufeinander einwirken lässt. Es bildet sich dabei eine Lösung von p - amino - benzolsulf onamid-N,N'-dimethy@en- sulfinsaurem Natrium.
Diese ist haltbar, lässt sich in hoher Konzentration darstellen und ohne Ausscheidungen genau neutralisieren, verdünnen und sterilisieren. Das erfindungsgemässe Verfahren kann beispielsweise '-folgendermassen ausgeführt werden In eine Suspension von 2,0 g p-Amino- benzolsulfonamid in 7 cm3 Wasser werden bei Sauerstoffausschluss 3.,0 g oxy-methyl- sulfinsaures Natrium eingetragen.
Das Ge misch wird unter Rühren etwa 1 Stunde auf dem Wasserbad erhitzt; wobei eine farblose, klare Lösung entsteht. Sie wird mit Natrium hydroxyd auf ein p$ von 7,0 eingestellt und durch Hinzufügen von destilliertem Wasser auf ein Volumen von 10 cm? gebracht.
Die Lösung der neuen Verbindung ist wie das p-Amino-benzolsulfonamid gegen Strepto- und Pneumokokkeninfektionen wirksam, hat aber dem p-Amino-benzolsulfonamiid gegen über den Vorteil, dass sich an der Injektions stelle keine Gewebsnekrosen bilden.
Process for the preparation of a solution of a derivative of a medicinal substance suitable for injection. The p-amino-benzenesulfonamide and its derivatives used as medicinal products are mostly sparingly soluble in water and therefore unsuitable for injections.
It has now been found that such sulfonamides, which apart from the free p-position, amino group, have an easily substitutable hydrogen atom elsewhere in the molecule, in an aqueous solution of a Hegose, eg. B. glucose, galactose, mannose, and a bisulfite, z. B.
Dissolve sodium, potassium, ammonium bisulfite, or in an aqueous solution of an a-oxy-alkyl sulfinic acid salt (alkali or ammonium salt) to form an at least almost neutral solution that can be used for injections. Injection solutions of particularly high concentration can bezw with the help of bisulfites. α-oxy-alkyl sulfinates of amines, e.g.
B. of diethylamine, diethanolamine, morpholine can be obtained.
The invention relates to a process for the preparation of a suitable injection solution of a new derivative of the known p-amino-benzenesulfonamide, wel Ches is characterized in that 1 mole of p-amino-benzenesulfonamide and at least 2 moles of sodium oxymethylsulfinate are added aqueous medium can act on each other. A solution of p-amino-benzenesulfonamide-N, N'-dimethy @ enesulfinic acid sodium is formed.
This is durable, can be displayed in high concentration and precisely neutralized, diluted and sterilized without excretions. The process according to the invention can, for example, be carried out as follows. In a suspension of 2.0 g of p-aminobenzenesulfonamide in 7 cm3 of water, with the exclusion of oxygen, 3.0 g of sodium oxymethylsulfinic acid are introduced.
The mixture is heated on the water bath for about 1 hour while stirring; a colorless, clear solution is formed. It is adjusted to a pH of 7.0 with sodium hydroxide and adjusted to a volume of 10 cm? By adding distilled water. brought.
Like p-amino-benzenesulfonamide, the solution of the new compound is effective against streptococcal and pneumococcal infections, but has the advantage over p-amino-benzenesulfonamide that no tissue necrosis forms at the injection site.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH246895T | 1945-02-10 | ||
CH240316T | 1945-02-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH246895A true CH246895A (en) | 1947-01-31 |
Family
ID=25728507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH246895D CH246895A (en) | 1945-02-10 | 1945-02-10 | Process for the preparation of a solution of a derivative of a medicinal substance suitable for injection. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH246895A (en) |
-
1945
- 1945-02-10 CH CH246895D patent/CH246895A/en unknown
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