DE816696C - Process for the preparation of the dibasic calcium salt of acetylglutamic acid - Google Patents
Process for the preparation of the dibasic calcium salt of acetylglutamic acidInfo
- Publication number
- DE816696C DE816696C DES17470A DES0017470A DE816696C DE 816696 C DE816696 C DE 816696C DE S17470 A DES17470 A DE S17470A DE S0017470 A DES0017470 A DE S0017470A DE 816696 C DE816696 C DE 816696C
- Authority
- DE
- Germany
- Prior art keywords
- calcium
- acid
- calcium salt
- preparation
- dibasic calcium
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/06—Aluminium, calcium or magnesium; Compounds thereof, e.g. clay
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (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)
Description
Verfahren zur Herstellung des zweibasischen Calciumsalzes der Acetylglutaminsäure Die neutral reagierenden Calciumsalze organischer Säuren, wie der Milchsäure, Gluconsäure und d-Glutaminsäure, haben praktische Bedeutung. Für bestimmte Anwendungszwecke ist es wichtig, daß das betreffende Calciumsalz sowohl einen hohen Calciumgehalt aufweist als auch gleichzeitig in Wasser leicht löslich sowie hitzebeständig ist.Process for the preparation of the dibasic calcium salt of acetylglutamic acid the neutrally reacting calcium salts of organic acids such as lactic acid and gluconic acid and d-glutamic acid, are of practical importance. For certain purposes It is important that the calcium salt in question has both a high calcium content as well as being easily soluble in water and heat-resistant at the same time.
Es wurde gefunden, daß das zweibasische, neutral reagierende Calciumsalz der Acetylglutaminsäure, das bisher noch nicht beschrieben wurde, diese Eigenschaften in hohem Maße auf sich vereinigt. It has been found that the dibasic, neutrally reacting calcium salt acetylglutamic acid, which has not yet been described, has these properties united to a great extent.
Das Calciumlactat hat zwar den hohen Calciumgehalt von 20,43 %, es löst sich aber nur zu etwa 5 Só in Wasser. Das Calciumgluconat enthält in wasserfreiem Zustand nur I0,2 % Calcium. Auch seine Löslichkeit ist begrenzt. Um eine beständige 2o%ige Lösung zu erhalten, giht man Stabilisatoren, wie Natriumsalze, zu. Das neutral reagierende einbasische Calciumsalz der d-Glutaminsäure enthält theoretisch 12,05 7o Calcium. Seine Löslichkeit in Wasser ist gut. The calcium lactate has the high calcium content of 20.43%, it but only dissolves to about 5 Só in water. The calcium gluconate contains in anhydrous Condition only I0.2% calcium. Its solubility is also limited. To be constant To obtain a 20% solution, stabilizers such as sodium salts are added. That neutral reacting monobasic calcium salt of d-glutamic acid theoretically contains 12.05 7o calcium. Its solubility in water is good.
Demgegenüber beträgt der Calciumgehalt des zweibasischen Calciumsalzes der Acetylglutaminsäure, der optisch aktiven wie der racemischen Form, I7,63 %. Es löst sich äußerst leicht in kohlensäurefreiem Wasser, und die wässerige Lösung läßt sich ohne hydrolytischen Zerfall des Salzes auf 100 bis I200 erhitzen. Das neue Calciumsalz läßt sich beispielsweise in der Calciumtherapie verwenden. In contrast, the calcium content of the dibasic calcium salt is of acetylglutamic acid, the optically active as well as the racemic form, 17.63%. It dissolves extremely easily in non-carbonated water, and the aqueous solution can be heated to 100 to 1200 without hydrolytic decomposition of the salt. That new calcium salt can be used, for example, in calcium therapy.
Beispiel Man acetyliert l-(+)-Glutaminsäure nach bekannten Methoden, z. B. derart, daß man zu einer zum Sieden erhitzten Suspension von 5 Teilen der Glutaminsäure in etwa 100 Teilen Eisessig 3,8 Teile Essigsäureanhydrid zusetzt und durch Abkühlen der entstandenen Lösung die gebildete l-(+)-Acetylglutaminsäure zur Ausscheidung bringt. 6 g der umkristallisierten Acetylglutaminsäure werden in 12 g Wasser gelöst und mittels der berechneten Menge von etwa 4 g Calciumhydroxyd neutralisiert. Example 1- (+) - glutamic acid is acetylated according to known methods, z. B. such that one becomes a boiling suspension of 5 parts of the Glutamic acid 3.8 parts of acetic anhydride are added in about 100 parts of glacial acetic acid and allowed to cool the resulting solution the l - (+) - acetylglutamic acid formed for excretion brings. 6 g of the recrystallized acetylglutamic acid are dissolved in 12 g of water and neutralized using the calculated amount of about 4 g calcium hydroxide.
Das Calcium-l-(+)-acetylglutaminat kann durch Eindampfen der Losung im Vakuum oder durch Fällen mit Methanol in fester Form gewonnen werden. In manchen Fällen genügt es, das Acetylierungsprodukt, von welchem die Essigsäure im Vakuum möglichst entfernt wurde, in Wasser zu lösen und mittels der berechneten Menge Calciumhydroxyd zu neutralisieren.The calcium-l - (+) - acetylglutaminate can through Evaporation of the solution can be obtained in solid form in vacuo or by precipitation with methanol. In some In cases it is sufficient to use the acetylation product, from which the acetic acid in vacuo was removed as possible, to be dissolved in water and using the calculated amount of calcium hydroxide to neutralize.
An Stelle von Calciumhydroxyd kann auch Calciumoxyd, Calciumcarbonat oder ein anderes Calciumsalz einer flüchtigen Säure verwendet werden. Calcium oxide, calcium carbonate can also be used in place of calcium hydroxide or another volatile acid calcium salt can be used.
An Stelle von optisch aktiver Glutaminsäure kann man auch die racemische Säure anwenden. Instead of optically active glutamic acid, one can also use the racemic Apply acid.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES17470A DE816696C (en) | 1950-07-08 | 1950-07-08 | Process for the preparation of the dibasic calcium salt of acetylglutamic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES17470A DE816696C (en) | 1950-07-08 | 1950-07-08 | Process for the preparation of the dibasic calcium salt of acetylglutamic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
DE816696C true DE816696C (en) | 1951-10-11 |
Family
ID=7475409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES17470A Expired DE816696C (en) | 1950-07-08 | 1950-07-08 | Process for the preparation of the dibasic calcium salt of acetylglutamic acid |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE816696C (en) |
-
1950
- 1950-07-08 DE DES17470A patent/DE816696C/en not_active Expired
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