DE1094931B - X-ray contrast media - Google Patents

X-ray contrast media

Info

Publication number
DE1094931B
DE1094931B DESCH26697A DESC026697A DE1094931B DE 1094931 B DE1094931 B DE 1094931B DE SCH26697 A DESCH26697 A DE SCH26697A DE SC026697 A DESC026697 A DE SC026697A DE 1094931 B DE1094931 B DE 1094931B
Authority
DE
Germany
Prior art keywords
ray contrast
contrast media
compounds
substance
propionic acid
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.)
Pending
Application number
DESCH26697A
Other languages
German (de)
Inventor
Dr Alexander Poljak
Dr Hans Priewe
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.)
Bayer Pharma AG
Original Assignee
Schering 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
Priority claimed from DESCH24255A external-priority patent/DE1076894B/en
Priority claimed from DESCH24639A external-priority patent/DE1080266B/en
Priority to DESCH26697A priority Critical patent/DE1094931B/en
Application filed by Schering AG filed Critical Schering AG
Priority to GB2248860A priority patent/GB950321A/en
Priority to AT552160A priority patent/AT217635B/en
Priority to IT1303560A priority patent/IT1047901B/en
Priority to CH925060A priority patent/CH400457A/en
Priority to SE826660A priority patent/SE300866B/xx
Priority to DK360060A priority patent/DK93696C/en
Priority to BE595083A priority patent/BE595083R/en
Publication of DE1094931B publication Critical patent/DE1094931B/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00Preparations for testing in vivo
    • A61K49/04X-ray contrast preparations
    • A61K49/0433X-ray contrast preparations containing an organic halogenated X-ray contrast-enhancing agent
    • A61K49/0447Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is a halogenated organic compound
    • A61K49/0495Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is a halogenated organic compound intended for oral administration

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)

Description

Röntgenkontrastmittel Zusatz zum Zusatzpatent 1 080 266 Im Patent 1 080 266 ist bereits vorgeschlagen worden, in kernjodierten ß - (Aminophenyl) -propionsäuren die Aminogruppe durch die Dimethylaminomethylenamino gruppe zu ersetzen und die so erhaltenen Verbindungen bzw. deren nichttoxische Salze mit organischen undloder anorganischen Basen als schattengebende Substanzen in peroral applizierbaren Röntgenkontrastmitteln zur Abbildung des Gallensystems zu verwenden, da gezeigt werden konnte, daß diese Verbindungen im Vergleich mit den bekannten kernjodierten B-(Aminopheny]) propionsäuren erhebliche Vorteile besitzen. X-ray contrast agent Addendum to additional patent 1 080 266 In the patent 1 080 266 has already been proposed in nuclear iodinated β - (aminophenyl) propionic acids to replace the amino group by the dimethylaminomethyleneamino group and the compounds obtained in this way or their non-toxic salts with organic and / or inorganic bases as shading substances in orally administered X-ray contrast media to use for imaging the biliary system, since it could be shown that this Compounds in comparison with the well-known nuclear iodinated B- (aminopheny]) propionic acids have considerable advantages.

Diese Vorteile bestehen vor allem in einer vergleichs weise sehr niedrigen Toxizität, einer ausgezeichneten Resorbierbarkeit bei peroraler Applikation und einer wesentlich besseren Gallenverteilung bei gleichzeitig kräftiger Schattengebung. These advantages consist mainly in a comparatively large amount low toxicity, excellent absorbability when administered orally and a much better bile distribution with strong shading at the same time.

Es wurde nun gefunden, daß nicht nur der Ersatz der Aminogruppe in kernjodierten ß-(Aminophenyl) -propionsäuren durch die Dimethylaminomethylenaminogruppe, sondern auch durch eine Gruppe der allgemeinen Formel in der R1 und R2 entweder niedere Alkyle mit 2 bis 6 Kohlenstoffatomen oder gemeinsam mit dem Stickstoffatom einen - gegebenenfalls weitere Heteroatome enthaltenden - Ring mit fünf bis sechs Gliedern bedeuten, Substanzen erhalten werden, die im Vergleich mit den im Hauptpatent 1080266 genannten Verbindungen in ihrer Wirkung keineswegs beeinträchtigt, sondern teilweise sogar verstärkt sind.It has now been found that not only the replacement of the amino group in nuclear iodinated β- (aminophenyl) propionic acids by the dimethylaminomethylene amino group, but also by a group of the general formula in which R1 and R2 signify either lower alkyls with 2 to 6 carbon atoms or together with the nitrogen atom a ring with five to six members - possibly containing further heteroatoms - substances are obtained which are effective in comparison with the compounds mentioned in the main patent 1080266 are in no way impaired, but in some cases even intensified.

Die Vorteile der neuen Verbindungen ergeben sich deutlich beim Vergleich mit schon bekannten Verbindungen im Tierversuch. Bei Gegenüberstellung der erfindung gemäßen fl- (3-N-Piperidino-methylenamino-2,4,6-trij odphenyl) -propionsäure (I) und ß-(3-N-Morpholino-methylenamino-2,4,6-trij odphenyl) -propionsäure (II) mit der bekannten ß - (3 -Amino -2,4,6 -trij odphenyl) propionsäure (III) wurden folgende Werte erhalten Gallenverteilung in 0/o nach 100 mg/kg LDao intraduodenal Ratte nach intravenös 1 2 | 3 mg/kg Stunden (1) 215 .... 8,9 28,0 1 46,5 (11) 388 .... 18,2 1 41,9 59,4 (III) 375 .... 6,6 5 13,5 Es lohnt sich, die etwas höhere Toxizität der Substanz I gegenüber der bekannten Substanz III in Kauf zu nehmen, da unter anderem die Gallenverteilung der Substanz I viel besser ist als die der Substanz III, zumal der absolute Wert der Toxizität auch bei der Substanz I noch recht gut liegt.The advantages of the new compounds emerge clearly when compared with compounds already known in animal experiments. When comparing the invention according to fl- (3-N-piperidino-methylenamino-2,4,6-trij odphenyl) propionic acid (I) and ß- (3-N-morpholino-methylenamino-2,4,6-trij odphenyl ) Propionic acid (II) with the known β - (3-amino -2,4,6 -trijodphenyl) propionic acid (III) the following values were obtained Bile distribution in 0 / o after 100 mg / kg LDao intraduodenal rat after intravenous 1 2 | 3 mg / kg hours (1) 215 .... 8.9 28.0 1 46.5 (11) 388 .... 18.2 1 41.9 59.4 (III) 375 .... 6.6 5 13.5 It is worthwhile to accept the slightly higher toxicity of substance I compared to the known substance III, since, among other things, the bile distribution of substance I is much better than that of substance III, especially since the absolute toxicity value of substance I is still lies quite well.

Die Herstellung der erfindungsgemäßen Verbindungen geschieht z. B. dadurch, daß man die bekannten kernjodierten ß-(Aminophenyl)-propionsäuren bzw. ihre Säureadditionssalze mit N-dialkyliertem Formamid oder z. B. The compounds according to the invention are prepared, for. B. by using the known nuclear iodinated ß- (aminophenyl) propionic acids or their acid addition salts with N-dialkylated formamide or z. B.

N-Formyl-piperidin oder N-Formyl-morpholin usw. in Gegenwart eines sauren Reaktionsvermittlers, wie Phosphoroxychlorid, bei mäßig erhöhten Temperaturen reagieren läßt. Selbstverständlich sind auch andere allgemeine Methoden verwendbar. Die Verfahren zur Herstellung der Verbindungen sollen hiermit nicht geschützt sein.N-formyl-piperidine or N-formyl-morpholine, etc. in the presence of a acidic reaction mediator, such as phosphorus oxychloride, at moderately elevated temperatures lets react. Of course, other general methods can also be used. This is not intended to protect the processes for making the compounds.

Beispiel 1 1,25 kg ß- (3-N-Piperidino-methylenamino-2,4,6-trij odphenyl)-propionsäure werden mit 0,51 Stärkekleister, der 25 g Maisstärke enthält, in einer Knetmaschine angeteigt. Die feuchte Masse wird wie üblich in einer Granuliermaschine granuliert und im Vakuum getrocknet. Example 1 1.25 kg of β- (3-N-piperidino-methylenamino-2,4,6-triiodophenyl) -propionic acid are mixed with 0.51 starch paste containing 25 g corn starch in a kneading machine made into a paste. The moist mass is granulated as usual in a granulating machine and dried in vacuo.

Das fertige Granulat wird dann mit 0,125 kg Maisstärke und 6 g Magnesiumstearat vermischt und zu Tabletten mit einem Wirkstoffgehalt von 500 mg verpreßt.The finished granules are then made with 0.125 kg of corn starch and 6 g of magnesium stearate mixed and compressed into tablets with an active ingredient content of 500 mg.

Beispiel 2 Das gut wasserlösliche Natriumsalz der ß(3-N-Morpholino - methylenamino -2, 4, 6 - trijodphenyl) - propionsäure wird in Gelatinekapseln abgefüllt. Jede Kapsel enthält 750 mg Wirkstoff. Zur maschinellen Kapselherstellung kann das Natriumsalz mit 40 0/, Paraffinöl zu einer fließfähigen Paste verarbeitet werden. Example 2 The readily water-soluble sodium salt of ß (3-N-Morpholino - methylenamino -2, 4, 6 - triiodophenyl) - propionic acid is in gelatin capsules bottled. Each capsule contains 750 mg of active ingredient. For mechanical capsule production the sodium salt can be processed into a flowable paste with 40%, paraffin oil will.

Beispiel 3 Das gemäß Beispiel 1 erhaltene Granulat wird durch Auftragen von 20 °/0 des Eigengewichtes Zuckersyrup im Dragierkessel dragiert und anschließend gewachst. Example 3 The granules obtained according to Example 1 are applied by applying Sugar syrup coated with 20% of its own weight in a coating pan and then coated waxed.

PATENTANSPRtJCHE 1. Abgeändertes Röntgenkontrastmittel gemäß Patent 1 080266, insbesondere zur peroralen Applikation für die Cholecystographie, enthaltend als schattengebende Substanz Verbindungen der allgemeinen Formel worin n die Zahlen 2 und 3 und R1 und R2 entweder niedere Alkyle mit 2 bis 6 Kohlenstoffatomen oder gemeinsam mit dem Stickstoffatom einen gegebenenfalls weitere Heteroatome enthaltenden Ring- mit fünf bis sechs Gliedern bedeutet.PATENT CLAIM 1. Modified X-ray contrast medium according to patent 1 080266, in particular for oral application for cholecystography, containing compounds of the general formula as shading substance where n denotes the numbers 2 and 3 and R1 and R2 either lower alkyls having 2 to 6 carbon atoms or, together with the nitrogen atom, a ring with five to six members which optionally contains further heteroatoms.

Claims (1)

2. Röntgenkontrastmittel gemäß Anspruch 1, dadurch gekennzeichnet, daß es die nichttoxischen Salze mit anorganischen und/oder organischen Basen enthält. 2. X-ray contrast medium according to claim 1, characterized in that that it contains the non-toxic salts with inorganic and / or organic bases.
DESCH26697A 1958-04-05 1959-09-16 X-ray contrast media Pending DE1094931B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DESCH26697A DE1094931B (en) 1958-06-20 1959-09-16 X-ray contrast media
GB2248860A GB950321A (en) 1958-04-05 1960-06-27 Derivatives of iodophenyl-propionic acids and improvements in and relating to x-ray contrast media
AT552160A AT217635B (en) 1959-09-16 1960-07-18 X-ray contrast media
IT1303560A IT1047901B (en) 1959-09-16 1960-07-26 CONTRAST FOR X-RAYS AND METHOD FOR ITS PREPARATION YOU
CH925060A CH400457A (en) 1959-09-16 1960-08-15 X-ray contrast media
SE826660A SE300866B (en) 1959-09-16 1960-08-30
DK360060A DK93696C (en) 1958-08-29 1960-09-10 X-ray contrast agent.
BE595083A BE595083R (en) 1959-09-16 1960-09-15 Process for the preparation of N, N-trisubstituted formamidines.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DESCH24255A DE1076894B (en) 1958-06-20 1958-06-20 X-ray contrast media
DESCH24639A DE1080266B (en) 1958-06-20 1958-08-29 X-ray contrast media
DESCH26697A DE1094931B (en) 1958-06-20 1959-09-16 X-ray contrast media

Publications (1)

Publication Number Publication Date
DE1094931B true DE1094931B (en) 1960-12-15

Family

ID=31498907

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH26697A Pending DE1094931B (en) 1958-04-05 1959-09-16 X-ray contrast media

Country Status (1)

Country Link
DE (1) DE1094931B (en)

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