DE704849C - Process for the preparation of solutions in water of poorly or insoluble medicinal substances - Google Patents

Process for the preparation of solutions in water of poorly or insoluble medicinal substances

Info

Publication number
DE704849C
DE704849C DEH151814D DEH0151814D DE704849C DE 704849 C DE704849 C DE 704849C DE H151814 D DEH151814 D DE H151814D DE H0151814 D DEH0151814 D DE H0151814D DE 704849 C DE704849 C DE 704849C
Authority
DE
Germany
Prior art keywords
water
parts
solutions
acid
preparation
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
Application number
DEH151814D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche 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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Priority to DEH151814D priority Critical patent/DE704849C/en
Application granted granted Critical
Publication of DE704849C publication Critical patent/DE704849C/en
Expired legal-status Critical Current

Links

Description

Verfahren zur Herstellung von Lösungen in Wasser schwer oder unlöslicher Arzneistoffe Es wurde gefunden, daß Lösungen von in Wasser schwer oder unlöslichen Arzneistoffen dadurch hergestellt werden können, daß die Alkylester von j )-Acetaminobuttersäure als Lösungsvermittler verwendet werden. Ester der (3-Aoetaminobuttersäurekönnen durch katalytische Hydrierung der entsprechenden Ester von (3-Acetaminocrotonsäure hergestellt werden. Mittels j3-Acetaminobutbersäureestern als Lösungsvermittlern kann man mit besonderem Vorteil beispielsweise Allylisopropylbarbitursäure, Diäthylbarbitursäure, Chininhydrochlorid, Kampfer, Acetylsalicylsäure, 2, q.-Dioxo-3, 3-diäthyltetrahydr:)-pyridin, gegebenenfalls in Anwesenheit von Wasser, lösen.Process for the preparation of solutions that are difficult or insoluble in water Medicinal substances It has been found that solutions of sparingly or insoluble in water Medicinal substances can be prepared in that the alkyl esters of j) -acetaminobutyric acid can be used as a solubilizer. Esters of (3-aoetaminobutyric acid can by catalytic hydrogenation of the corresponding esters of (3-acetaminocrotonic acid getting produced. Using j3-acetaminobutberic acid esters as solubilizers one can with particular advantage, for example, allylisopropylbarbituric acid, diethylbarbituric acid, Quinine hydrochloride, camphor, acetylsalicylic acid, 2, q.-Dioxo-3, 3-diethyltetrahydr:) - pyridine, if necessary in the presence of water, dissolve.

Die erfindungsgemäß hergestellten Lösungen eignen sich sowohl zur oralen wie zur parenteralen Anwendung; die Injektionslösungen, selbst vollkommen wasserfreie, sind durch das Fehlen jeglicher Reiz- und sonstiger Nebenwirkungen bei der Anwendung ausgezeichnet.The solutions prepared according to the invention are suitable both for oral and parenteral use; the injection solutions, themselves perfect anhydrous, are due to the absence of any irritation or other side effects excellent in use.

Die nachstehenden Beispiele sollen zur weiteren Erläuterung der Erfindung dienen, ohne jedoch den Umfang derselben auf diese Beispiele zu beschränken. Die angeführten Teile sind Gewichtsteile, sofern nichts anderes ,angegeben ist. Beispiel i i o Teile Allylisopropylbarbitursäure löst man in 6o Teilen ß-Acetaminobuttersäureäthylester und 4.o Teilen Wasser. Die so erhaltene Lösung ist klar, farblos und kann beliebig mit Wasser verdünnt werden.The following examples are intended to further illustrate the invention serve without, however, limiting the scope of the same to these examples. the The parts listed are parts by weight, unless otherwise stated. example 10 parts of allylisopropylbarbituric acid are dissolved in 60 parts of ß-acetaminobutyric acid ethyl ester and 4.o parts of water. The solution obtained in this way is clear, colorless and can be used as desired be diluted with water.

An Stelle des j3-Acet.aminobuttersäureäthylesters kann man mit gleichem Erfolg j3-Acetaminobuttersäuremethylester verwenden. Beispiel 2 25 Teile Chininhydrochlorid werden in einer Lösung aus gleichen Gewichtsteilen j3-Acetaminobuttersäureäthylester und Wasser zu ioo Volumteilen gelöst.Instead of the j3-Acet.aminobuttersäureäthylesters one can use the same Use success j3-acetaminobutyric acid methyl ester. Example 2 25 parts of quinine hydrochloride are in a solution of equal parts by weight of j3-acetaminobutyric acid ethyl ester and water dissolved to 100 parts by volume.

8 Teile Chininbase können mit demselben Lösungsmittel in Lösung gebracht werden. Die so erhaltene Lösung ist haltbar und kann gewünschtenfalls weiter mit Wasser verdünnt werden. Beispiel 3 2o Teile Kampfer .lösen sich leicht mit i3-Acetaminobuttersäureäthylester zti einer 2oo/oigen Lösung.8 parts of quinine base can be brought into solution with the same solvent will. The solution obtained in this way is stable and can, if desired, continue with Water to be diluted. Example 3 2o parts of camphor dissolve easily with 13-acetaminobutyric acid ethyl ester zti a 2oo / o solution.

Beispiel In gleicher Weise wie in Beispiel 3 können 25 Teile Acethylsalicylsäure zu einer Lösung von i oo Volumteilen gelöst werden.Example In the same way as in Example 3, 25 parts of acethylsalicylic acid be dissolved to a solution of 100 parts by volume.

Beispiel 5 io Teile 2, 4-Dioio-3, 3-diäthyltetrahydr:)-pyridin werden mit 3o Teilen i3-Acet.aminobuttersäureäthylester und 64 Teilen Wasser behandelt. Man erhält eine klare, haltbare und beliebig mit Wasser verdünnbare Lösung. Beispiel 6, Man: löst io Teile Diäthylbarbitursäure in 6o Teilen ß-Acetaminobuttersäure-n-propylester' und ergänzt mit Wasser zu i oo Volumteilen. Die Lösung ist farblos und haltbar.Example 5 io parts of 2, 4-Dioio-3, 3-diethyltetrahydr:) - are pyridine treated with 3o parts of i3-acet.aminobutyric acid ethyl ester and 64 parts of water. A clear, durable solution that can be diluted with water as desired is obtained. example 6, Man: dissolve 10 parts of diethylbarbituric acid in 6o parts of ß-acetaminobutyric acid n-propyl ester ' and supplemented with water to 100 parts by volume. The solution is colorless and durable.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Lösungen in Wasser schwer oder unlöslicher Arzneistoffe, dadurch gekennzeichnet. daß Alkylester von ;3-Acetaminobuttersäure als Lösungsvermittler verwendet werden.PATENT CLAIM: Process for the preparation of solutions in water difficult or insoluble drugs, characterized. that alkyl esters of; 3-acetaminobutyric acid can be used as a solubilizer.
DEH151814D 1937-05-30 1937-05-30 Process for the preparation of solutions in water of poorly or insoluble medicinal substances Expired DE704849C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH151814D DE704849C (en) 1937-05-30 1937-05-30 Process for the preparation of solutions in water of poorly or insoluble medicinal substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH151814D DE704849C (en) 1937-05-30 1937-05-30 Process for the preparation of solutions in water of poorly or insoluble medicinal substances

Publications (1)

Publication Number Publication Date
DE704849C true DE704849C (en) 1941-04-08

Family

ID=7181259

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH151814D Expired DE704849C (en) 1937-05-30 1937-05-30 Process for the preparation of solutions in water of poorly or insoluble medicinal substances

Country Status (1)

Country Link
DE (1) DE704849C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235457A (en) * 1962-12-07 1966-02-15 Gillette Co Humectant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235457A (en) * 1962-12-07 1966-02-15 Gillette Co Humectant

Similar Documents

Publication Publication Date Title
EP0004650B1 (en) Use of 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-pyridin-3-beta-methoxy ethylester-5-isopropylester for the preparation of cerebrally active drugs
DE2802273C3 (en) Process for the preparation of suppositories from aminoglycidic antibiotics
DE704849C (en) Process for the preparation of solutions in water of poorly or insoluble medicinal substances
DE1053736B (en) Process to increase the solubility of therapeutically active substances in water
DE2633891C2 (en) Tris (hydroxymethyl) aminomethane salt of 2- (5-benzoylthienyl) -α-methyl acetic acid, process for its preparation and pharmaceutical compositions containing it
DE662812C (en) Process for the production of long-lasting, aqueous pharmaceutical solutions
DE268489C (en)
DE678115C (en) Process for the preparation of solutions of medicinal substances which are difficult to dissolve or insoluble in water
DE642260C (en) Process for the production of concentrated, water-containing solutions of medicinal substances which are water-heavy or insoluble
DE673500C (en) Process for the production of stable solutions of poorly soluble pharmaceuticals
CH657525A5 (en) METHOD FOR PRODUCING AN INJECTION SOLUTION.
DE829166C (en) Process for the preparation of N- (p-arsenosobenzyl) glycine amide and its salts
DE384688C (en) Process for the preparation of durable guaiacol preparations in aqueous solution
AT356277B (en) METHOD FOR PRODUCING AQUEOUS INJECTION SOLUTIONS WITH A VALPROIN ACID CONTENT
DE1047773B (en) Process for optionally temporary stabilization of monomeric, polymerizable compounds
AT142708B (en) Process for the preparation of therapeutically useful solutions of medicinal substances.
DE352364C (en) Process for the production of oily medical solutions
AT112729B (en) Process for the preparation of drug solutions.
DE1617433C (en) Process for the preparation of 5.5 Diphenyl hydantoin sodium solutions for injections
DE1095990B (en) Process for the production of water-soluble preparations and concentrated, stable aqueous solutions of digoxin
DE716579C (en) Process for the production of ester amides of almond acid
DE563211C (en) Process for the production of tropicalized solid alcoholic iodine solutions using soaps for therapeutic purposes
AT83648B (en) Process for solubilizing organic substances that are otherwise insoluble or sparingly soluble in water.
DE752784C (en) Production of durable liquid suspensions of water-soluble antimony compounds
DE649126C (en) Disinfectant preparation