EP1159277A1 - Crystal modification d of 8-cyano-1-cyclopropyl-7- (1s, 6s- 2,8- diazabicyclo- 4.3.0] nonan-8-yl) -6-fluoro -1,4-dihydro -4-oxo -3-quinoline carboxylic acid - Google Patents

Crystal modification d of 8-cyano-1-cyclopropyl-7- (1s, 6s- 2,8- diazabicyclo- 4.3.0] nonan-8-yl) -6-fluoro -1,4-dihydro -4-oxo -3-quinoline carboxylic acid

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EP1159277A1
EP1159277A1 EP00909167A EP00909167A EP1159277A1 EP 1159277 A1 EP1159277 A1 EP 1159277A1 EP 00909167 A EP00909167 A EP 00909167A EP 00909167 A EP00909167 A EP 00909167A EP 1159277 A1 EP1159277 A1 EP 1159277A1
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Prior art keywords
ccdc
modification
diazabicyclo
cyclopropyl
dihydro
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German (de)
French (fr)
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Thomas Himmler
Hubert Rast
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Bayer AG
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Bayer AG
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
    • C07D471/04—Ortho-condensed systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/04—Antibacterial agents

Definitions

  • the present invention relates to a defined crystal modification of 8-cyano-1-cyclopropyl-7- (IS, 6S-2,8-diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro-1,4-dihydro- 4-oxo-3-quinoline carboxylic acid, process for its preparation and its use in pharmaceutical preparations.
  • CCDC is known from DE-A 19 633 805 or PCT application no. 97 903 260.4. It is then prepared by reacting 7-chloro-8-cyano-l-cyclopropyl-6-fluoro-l, 4-dihydro-4-oxo-3-quinolinecarboxylic acid with (lS, 6S) -2,8-diazabicyclo [4.3 .0] nonane in a mixture of dimethylformamide and acetonitrile in the presence of an auxiliary base. After adding water, CCDC is extracted from water with dichloromethane and isolated by removing the extractant. You get one
  • the partly Amorphous powder obtained by the manufacturing process outlined above is also hygroscopic. Amorphous solids, and even more hygroscopic
  • Solids are difficult to handle in galenical processing because they have low bulk densities and poor flow properties, for example.
  • special working techniques and facilities are required to handle hygroscopic solids in order to achieve reproducible results, e.g. with regard to the active substance content or stability in the solid formulations produced.
  • the invention is therefore based on the object of producing a crystalline form of defined modification of CCDC which, owing to its physical properties, in particular its crystal properties, is easy to handle in pharmaceutical formulations.
  • the invention therefore relates to the crystalline modification D of CCDC, which is characterized in that it has an X-ray powder diffractogram with the reflex positions (2 theta) of high and medium intensity (> 30% relative intensity) given in Table 1 below.
  • Table 1 :
  • Modification D according to the invention of CCDC also differs from other forms of CCDC in a number of other properties. This too
  • CCDC of modification D is characterized in that it has a melting point of 261 ° C. to 265 ° C., determined with the aid of differential thermal analysis (DTA) Has.
  • DTA differential thermal analysis
  • CCDC of modification D is characterized in that it has an infrared spectrum measured in KBr as shown in Figure 3.
  • the crystal modification D of CCDC is obtained by dissolving CCDC of unknown modification or amorphous CCDC in a concentration between 1 and 3 percent by weight in water, allowing this solution to stand until a solid precipitates, filtering off this solid, drying the water-containing product thus obtained and then heated to a temperature above the transition temperature.
  • the water-containing product can be dried using standard methods.
  • the water-containing product can be dried in a vacuum at an elevated temperature. It is also possible to carry out the drying in the presence of a customary drying agent such as, for example, phosphorus pentoxide.
  • the temperature required to convert the dried sample into modification D can be determined by means of a DTA of the dried substance. As a rule, it is between 130 ° C and 160 ° C.
  • CCDC of crystal modification D is surprisingly stable and does not convert into another crystal modification or the amorphous form even after prolonged storage. For these reasons, it is ideally suited for the production of tablets or other solid formulations. Its stability gives these formulations the desired long-term storage stability. With the crystal modification D, stable and solid preparations of CCDC can be produced in a targeted manner. CCDC of crystal modification D is extremely effective against pathogenic bacteria in the field of human or veterinary medicine. Its broad area of application corresponds to that of CCDC.
  • D from CCDC was obtained with a transmission diffractometer STADI-P with location-sensitive detector (PSD2) from Stoe.
  • the melting point of the differential thermal analysis was obtained with the device DSC 820 from Mettler-Toledo.
  • the sample of CCDC of crystal modification D was heated in air in an aluminum crucible at 5 K / min.
  • the IR spectrum was obtained in KBr using the 881 device from Perkin-Elmer.
  • Aetonitrile is stirred for 16 hours at room temperature.
  • the reaction mixture is concentrated on a rotary evaporator at a bath temperature of 60 ° C. and the residue is taken up in 10 ml of water.
  • the resulting solution is adjusted to pH 7 with dilute hydrochloric acid and the solid is filtered off.
  • the filtrate is extracted three times with 20 ml dichloromethane.
  • the organic phase is dried over
  • 1,012 g of 7-chloro-8-cyan-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarbonic acid are mixed in a mixture of 3,300 ml of ethanol and 1,980 ml of N-methyl -pyrroli- don and 534 g of Hünig base. The mixture is heated under reflux and then dripped
  • the solid obtained is in a mixture of 4,650 ml of ethanol and 41 g

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Communicable Diseases (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Oncology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

The invention relates to a defined crystal modification of 8-cyano -1-cyclopropyl -7- (1S, 6S- 2,8- diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro -1,4- dihydro -4-oxo-3- quinoline carboxylic acid, to methods for producing the same and to the use thereof in pharmaceutical formulations. The crystal modification can be distinguished from other crystal modifications of 8-cyano -1-cyclopropyl -7-(1S, 6S-2,8- diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro -1,4-dihydro -4-oxo -3-quinoline carboxylic acid of formula (I) by its characteristic X-ray powder diffractogram and its differential thermodiagram.

Description

Kristallmodifikation D von 8-Cyan-l-cyclopropyl-7-(lS,6S-2,8-diazabicyclo- [4.3.0]nonan-8-yl)-6-fluor-l,4-dihydro-4-oxo-3-chinolincarbonsäureCrystal modification D of 8-cyan-l-cyclopropyl-7- (lS, 6S-2,8-diazabicyclo- [4.3.0] nonan-8-yl) -6-fluoro-l, 4-dihydro-4-oxo 3-quinoline carboxylic acid
Die vorliegende Erfindung betrifft eine definierte Kristallmodifikation von 8-Cyan-l- cyclopropyl-7-(lS,6S-2,8-diazabicyclo[4.3.0]nonan-8-yl)-6-fluor-l,4-dihydro-4-oxo- 3-chinolincarbonsäure, Verfahren zu ihrer Herstellung und ihre Verwendung in pharmazeutischen Zubereitungen.The present invention relates to a defined crystal modification of 8-cyano-1-cyclopropyl-7- (IS, 6S-2,8-diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro-1,4-dihydro- 4-oxo-3-quinoline carboxylic acid, process for its preparation and its use in pharmaceutical preparations.
8-Cyan- 1 -cyclopropyl-7-( 1 S,6S-2,8-diazabicyclo[4.3.0]nonan-8-yl)-6-fluor- 1 ,4-dihy- dro-4-oxo-3-chinolincarbonsäure der Formel (I) soll im folgenden als CCDC bezeichnet werden.8-cyano-1-cyclopropyl-7- (1 S, 6S-2,8-diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo-3 -quinoline carboxylic acid of the formula (I) will be referred to below as CCDC.
CCDC ist bekannt aus DE-A 19 633 805 oder PCT Anm.-Nr. 97 903 260.4. Sie wird danach hergestellt durch Umsetzung von 7-Chlor-8-cyan-l-cyclopropyl-6-fluor-l,4- dihydro-4-oxo-3-chinolincarbonsäure mit (lS,6S)-2,8-Diazabicyclo[4.3.0]nonan in einem Gemisch aus Dimethylformamid und Acetonitril in Gegenwart einer Hilfsbase. Nach Versetzen mit Wasser wird CCDC mit Dichlormethan aus Wasser extra- hiert und durch Entfernen des Extraktionsmittels isoliert. Man erhält dabei einCCDC is known from DE-A 19 633 805 or PCT application no. 97 903 260.4. It is then prepared by reacting 7-chloro-8-cyano-l-cyclopropyl-6-fluoro-l, 4-dihydro-4-oxo-3-quinolinecarboxylic acid with (lS, 6S) -2,8-diazabicyclo [4.3 .0] nonane in a mixture of dimethylformamide and acetonitrile in the presence of an auxiliary base. After adding water, CCDC is extracted from water with dichloromethane and isolated by removing the extractant. You get one
Pulver, das keine eindeutige Kristallmodifikation aufweist. Das Pulver ist vielmehr zu großen Teilen amorph und kann Gemische verschiedener Kristallmodifikationen enthalten. Sollte durch Zufall eine einheitliche Kristallmodifikation entstehen, ist unklar, wie sie extrahiert und definiert erhalten werden kann. Für die Herstellung von Arzneimitteln ist jedoch Voraussetzung, daß für einen Wirkstoff, der in verschie- denen Kristallmodifikationen vorliegen kann, eindeutig angegeben wird, in welcher Kristallmodifikation er zur Herstellung des Mittels eingesetzt wird.Powder that has no clear crystal modification. Rather, the powder is largely amorphous and can contain mixtures of various crystal modifications. If a uniform crystal modification occurs by chance, it is unclear how it can be extracted and obtained in a defined manner. For the manufacture of pharmaceuticals, however, it is a prerequisite that for an active ingredient that which may have crystal modifications, it is clearly stated in which crystal modification it is used to produce the agent.
Das z.T. amorphe Pulver, das nach dem oben skizzierten Herstellverfahren erhalten wird, ist zudem hygroskopisch. Amorphe Feststoffe, und erst recht hygroskopischeThe partly Amorphous powder obtained by the manufacturing process outlined above is also hygroscopic. Amorphous solids, and even more hygroscopic
Feststoffe, sind in der galenischen Verarbeitung jedoch schlecht handzuhaben, da sie beispielsweise geringe Schüttdichten und mangelhafte Fließeigenschaften aufweisen. Außerdem sind zur Handhabung hygroskopischer Feststoffe spezielle Arbeitstechniken und Einrichtungen erforderlich, um reproduzierbare Ergebnisse, z.B. bezüglich des Wirkstoffgehaltes oder der Stabilität in den produzierten Festformulierungen zu erhalten.Solids, however, are difficult to handle in galenical processing because they have low bulk densities and poor flow properties, for example. In addition, special working techniques and facilities are required to handle hygroscopic solids in order to achieve reproducible results, e.g. with regard to the active substance content or stability in the solid formulations produced.
Der Erfindung liegt daher die Aufgabe zugrunde, eine kristalline Form definierter Modifikation von CCDC herzustellen, die aufgrund ihrer physikalischen Eigenschaf- ten, insbesondere ihrer Kristalleigenschaften in galenischen Formulierungen gut zu handhaben ist.The invention is therefore based on the object of producing a crystalline form of defined modification of CCDC which, owing to its physical properties, in particular its crystal properties, is easy to handle in pharmaceutical formulations.
Diese Aufgabe wird erfindungsgemäß durch eine neue, kristalline Form von CCDC gelöst, die nachstehend als Modifikation D bezeichnet wird.This object is achieved according to the invention by a new, crystalline form of CCDC, which is referred to below as modification D.
Gegenstand der Erfindung ist daher die kristalline Modifikation D von CCDC, die dadurch gekennzeichnet ist, daß sie ein Röntgen-Pulverdiffraktogramm mit den in der folgenden Tabelle 1 angegebenen Reflexlagen ( 2 Theta) hoher und mittlerer Intensität (> 30% relative Intensität) aufweist. Tabelle 1:The invention therefore relates to the crystalline modification D of CCDC, which is characterized in that it has an X-ray powder diffractogram with the reflex positions (2 theta) of high and medium intensity (> 30% relative intensity) given in Table 1 below. Table 1:
Pulver-Röntgendiffraktogramm von CCDC der Modifikation DX-ray powder diffractogram of CCDC of modification D
2 θ (2 Theta)2 θ (2 theta)
7,67.6
9,59.5
12,812.8
14,214.2
17,517.5
19 19,3 19,5 20,419 19.3 19.5 20.4
21 21,8 22,6 25,2 27,521 21.8 22.6 25.2 27.5
Das Pulver-Röntgendiffraktogramm der Modifikation D ist auch in der Abbildung 1 wiedergegeben.The powder X-ray diffractogram of modification D is also shown in Figure 1.
Die erfindungsgemäße Modifikation D von CCDC unterscheidet sich außerdem in einer Reihe weiterer Eigenschaften von anderen Formen der CCDC. Auch dieseModification D according to the invention of CCDC also differs from other forms of CCDC in a number of other properties. This too
Eigenschaften können einzeln oder gemeinsam mit den übrigen Parametern zur Charakterisierung der erfindungsgemäßen Modifikation D von CCDC dienen.Properties can be used individually or together with the other parameters to characterize modification D of CCDC according to the invention.
CCDC der Modifikation D ist dadurch gekennzeichnet, daß es einen mit Hilfe der Differentialthermoanalyse (DTA) bestimmten Schmelzpunkt von 261°C bis 265 °C hat. Ein charakteristisches Differentialthermodiagramm ist in der Abbildung 2 wiedergegeben.CCDC of modification D is characterized in that it has a melting point of 261 ° C. to 265 ° C., determined with the aid of differential thermal analysis (DTA) Has. A characteristic differential thermal diagram is shown in Figure 2.
CCDC der Modifikation D ist dadurch gekennzeichnet, daß es ein in KBr gemesse- nes Infrarotspektrum wie in Abbildung 3 gezeigt besitzt.CCDC of modification D is characterized in that it has an infrared spectrum measured in KBr as shown in Figure 3.
Die Kristallmodifikation D von CCDC wird dadurch erhalten, daß man CCDC unbekannter Modifikation oder amorphes CCDC in einer Konzentration zwischen 1 und 3 Gewichtsprozent in Wasser löst, diese Lösung stehen läßt bis ein Feststoff ausfällt, diesen Feststoff abfiltriert, das so erhaltene wasserhaltige Produkt trocknet und anschließend bis auf eine Temperatur, die oberhalb der Umwandlungstemperatur liegt, erhitzt.The crystal modification D of CCDC is obtained by dissolving CCDC of unknown modification or amorphous CCDC in a concentration between 1 and 3 percent by weight in water, allowing this solution to stand until a solid precipitates, filtering off this solid, drying the water-containing product thus obtained and then heated to a temperature above the transition temperature.
Das Trocknen des wasserhaltigen Produktes kann nach gängigen Methoden erfolgen. So kann das wasserhaltige Produkt beispielsweise bei erhöher Temperatur im Vakuum getrocknet werden. Es ist auch möglich, die Trocknung in Gegenwart eines üblichen Trocknungsmittels wie beispielsweise Phosphorpentoxid durchzufuhren.The water-containing product can be dried using standard methods. For example, the water-containing product can be dried in a vacuum at an elevated temperature. It is also possible to carry out the drying in the presence of a customary drying agent such as, for example, phosphorus pentoxide.
Die zur Umwandlung der getrockneten Probe in die Modifikation D erforderliche Temperatur kann mittels einer DTA der getrockneten Substanz bestimmt werden. In der Regel liegt sie zwischen 130°C und 160°C.The temperature required to convert the dried sample into modification D can be determined by means of a DTA of the dried substance. As a rule, it is between 130 ° C and 160 ° C.
CCDC der Kristallmodifikation D ist überraschend stabil und wandelt sich auch bei längerer Lagerung nicht in eine andere Kristallmodifikation oder die amorphe Form um. Es ist aus diesen Gründen hervorragend zur Herstellung von Tabletten oder anderen Festformulierungen geeignet. Durch seine Stabilität verleiht es diesen Formulierungen die gewünschte lang andauernde Lagerstabilität. Mit der Kristallmodifikation D können damit definiert und gezielt stabile feste Zubereitungen von CCDC hergestellt werden. CCDC der Kristallmodifikation D ist hervorragend gegen pathogene Bakterien auf dem Gebiet der Human- oder Tiermedizin wirksam. Sein breites Einsatzgebiet entspricht dem von CCDC.CCDC of crystal modification D is surprisingly stable and does not convert into another crystal modification or the amorphous form even after prolonged storage. For these reasons, it is ideally suited for the production of tablets or other solid formulations. Its stability gives these formulations the desired long-term storage stability. With the crystal modification D, stable and solid preparations of CCDC can be produced in a targeted manner. CCDC of crystal modification D is extremely effective against pathogenic bacteria in the field of human or veterinary medicine. Its broad area of application corresponds to that of CCDC.
Das Röntgen-Pulverdiffraktogramm zur Charakterisierung der KristallmodifikationThe X-ray powder diffractogram to characterize the crystal modification
D von CCDC wurde mit einem Transmissions-Diffra tometer STADI-P mit ortsempfindlichen Detektor (PSD2) der Firma Stoe erhalten.D from CCDC was obtained with a transmission diffractometer STADI-P with location-sensitive detector (PSD2) from Stoe.
Der Schmelzpunkt der Differentialthermoanalyse wurde mit dem Gerät DSC 820 der Firma Mettler-Toledo erhalten. Dabei wurde die Probe von CCDC der Kristallmodifikation D in einem Aluminiumtiegel mit 5 K/min an der Luft aufgeheizt.The melting point of the differential thermal analysis was obtained with the device DSC 820 from Mettler-Toledo. The sample of CCDC of crystal modification D was heated in air in an aluminum crucible at 5 K / min.
Das IR-Spektrum wurde mit dem Gerät 881 der Fa. Perkin-Elmer in KBr erhalten.The IR spectrum was obtained in KBr using the 881 device from Perkin-Elmer.
Die folgenden Beispiele illustrieren die Erfindung ohne sie einzuschränken. Die in folgenden Beispielen eingesetzten Lösungsmittel-/Basensysteme sind besonders bevorzugt. The following examples illustrate the invention without restricting it. The solvent / base systems used in the following examples are particularly preferred.
VergleichsbeispielComparative example
Eine Mischung aus 3,07 g 7-Chlor-8-cyan-l-cyclopropyl-6-fluor-l,4-dihydro-4-oxo- 3-chinolincarbonsäure, 1,39 g (lS,6S)-2,8-Diazabicyclo[4.3.0]nonan, 2,24 g 1,4- Diazabicyclo[2.2.2]octan (DABCO), 29,5 ml Dimethylformamid und 29,5 mlA mixture of 3.07 g of 7-chloro-8-cyano-1-cyclopropyl-6-fluoro-1, 4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.39 g (IS, 6S) -2.8 -Diazabicyclo [4.3.0] nonane, 2.24 g 1,4-diazabicyclo [2.2.2] octane (DABCO), 29.5 ml dimethylformamide and 29.5 ml
Aetonitril wird 16 Stunden bei Raumtemperatur gerührt. Das Reaktionsgemisch wird bei 60°C Badtemperatur am Rotationsverdampfer eingeengt und der Rückstand in 10 ml Wasser aufgenommen. Die resultierende Lösung wird mit verdünnter Salzsäure auf pH 7 gestellt und der Feststoff abfiltriert. Das Filtrat wird dreimal mit je 20 ml Dichlormethan ausgeschüttelt. Man trocknet die organische Phase überAetonitrile is stirred for 16 hours at room temperature. The reaction mixture is concentrated on a rotary evaporator at a bath temperature of 60 ° C. and the residue is taken up in 10 ml of water. The resulting solution is adjusted to pH 7 with dilute hydrochloric acid and the solid is filtered off. The filtrate is extracted three times with 20 ml dichloromethane. The organic phase is dried over
Natriumsulfat, filtriert und engt das Filtrat am Rotationsverdampfer bei 60°C Badtemperatur ein. Man erhält 2,4 g hellbraunen Feststoff, der das in der Abbildung 4 gezeigte Röntgen-Pulverdiffraktogramm aufweist und demnach zum großen Teil amorph ist.Sodium sulfate, filtered and the filtrate concentrated on a rotary evaporator at 60 ° C bath temperature. 2.4 g of light-brown solid are obtained, which has the X-ray powder diffractogram shown in FIG. 4 and are therefore largely amorphous.
Beispiel 1example 1
1 012 g 7-Chlor-8-cyan-l-cyclopropyl-6-fluor-l,4-dihydro-4-oxo-3-chinolincarbon- säure werden in einer Mischung aus 3 300 ml Ethanol, 1 980 ml N-Methyl-pyrroli- don und 534 g Hünig-Base vorgelegt. Man erhitzt unter Rückfluß und tropft dann1,012 g of 7-chloro-8-cyan-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarbonic acid are mixed in a mixture of 3,300 ml of ethanol and 1,980 ml of N-methyl -pyrroli- don and 534 g of Hünig base. The mixture is heated under reflux and then dripped
459 g (lS,6S)-2,8-Diazabicylclo[4.3.0]nonan zu. Nach Beendigung des Zutropfens rührt man noch 3 Stunden unter Rückfluß, läßt dann auf Raumtemperatur abkühlen, saugt den Feststoff ab und wäscht ihn mit insgesamt 1 800 ml Ethanol.459 g (IS, 6S) -2,8-diazabicylclo [4.3.0] nonane. After the dropping has ended, the mixture is stirred under reflux for a further 3 hours, then allowed to cool to room temperature, the solid is filtered off with suction and washed with a total of 1,800 ml of ethanol.
Der erhaltene Feststoff wird in einer Mischung aus 4 650 ml Ethanol und 41 gThe solid obtained is in a mixture of 4,650 ml of ethanol and 41 g
Hünig-Base suspendiert und das Reaktionsgemisch 3 Stunden unter Rückfluß erhitzt. Man läßt das Reaktionsgemisch wieder auf Raumtemperatur abkühlen, saugt den Feststoff ab, wäscht mit insgesamt 1 000 ml EtOH nach und trocknet bei 60 bis 70°C im Vakuumtrockenschrank bis zur Gewichtskonstanz. Man erhält 1 130 g beigen Feststoff, der das in der Abbildung 5 gezeigte Pulver-Röntgendiffraktogramm aufweist. Aus 450 g dieses Feststoffes und 29 450 g doppelt destilliertem Wasser wird eine 1 ,5 %ige (w/w) wäßrige Lösung hergestellt, die durch ein 0,2 μm-Filter filtriert wird, um etwaige ungelöste Partikel zu entfernen. Anschließend wird diese Lösung 4 Wochen bei Raumtemperatur unter Lichtausschluß in Kanistern aus Polyethylen gelagert. Nach dieser Zeit wird der ausgefallene Feststoff über ein 0,8 μm-Filter abfiltriert und über Nacht bei 75°C getrocknet.Hünig base suspended and the reaction mixture heated under reflux for 3 hours. The reaction mixture is allowed to cool back to room temperature, the solid is filtered off with suction, washed with a total of 1,000 ml of EtOH and dried at 60 to 70 ° C. in a vacuum drying cabinet to constant weight. 1 130 g of beige solid are obtained, which has the powder X-ray diffractogram shown in FIG. A 1.5% (w / w) aqueous solution is prepared from 450 g of this solid and 29,450 g of double-distilled water, which is filtered through a 0.2 μm filter in order to remove any undissolved particles. This solution is then stored for 4 weeks at room temperature in the absence of light in polyethylene canisters. After this time, the precipitated solid is filtered off through a 0.8 μm filter and dried at 75 ° C. overnight.
Man erhält 2 g Feststoff, der nach Pulver-Röntgendiffraktogramm überwiegend amorph ist (Abbildung 6) und die in der Abb. 7 gezeigte DTA aufweist.This gives 2 g of solid which, according to the powder X-ray diffractogram, is predominantly amorphous (Figure 6) and has the DTA shown in Fig. 7.
30 mg des so erhaltenen Feststoffes werden 2 Stunden unter Stickstoff auf 160°C erhitzt. Man erhält 28 mg Feststoff, der das in der Abbildung 1 gezeigte Pulver- Röntgendiffraktogramm, das in der Abbildung 2 gezeigte Differentialthermodia- gramm und das in der Abbildung 3 gezeigte IR-Spektrum aufweist. 30 mg of the solid obtained in this way are heated to 160 ° C. under nitrogen for 2 hours. 28 mg of solid are obtained, which has the powder X-ray diffractogram shown in FIG. 1, the differential thermodiagram shown in FIG. 2 and the IR spectrum shown in FIG. 3.

Claims

Patentansprüche claims
1. 8-Cyan-l-cyclopropyl-7-(l S,6S-2,8-diazabicyclo[4.3.0]nonan-8-yl)-6-fluor- l,4-dihydro-4-oxo-3-chinolincarbonsäure (CCDC) der Kristallmodifikation D, dadurch gekennzeichnet, daß sie ein Röntgen-Pulverdiffraktogramm mit folgenden Reflexlagen (2 Theta) hoher und mittlerer Intensität aufweist1. 8-cyano-1-cyclopropyl-7- (1 S, 6S-2,8-diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo-3 -quinoline carboxylic acid (CCDC) of crystal modification D, characterized in that it has an X-ray powder diffractogram with the following reflex layers (2 theta) of high and medium intensity
2 θ (2 Theta)2 θ (2 theta)
7,67.6
9,59.5
12,812.8
14,214.2
17,517.5
19 19,3 19,5 20,419 19.3 19.5 20.4
21 21,8 22,6 25,2 27,521 21.8 22.6 25.2 27.5
2. 8-Cyan-l-cyclopropyl-7-(lS,6S-2,8-diazabicyclo[4.3.0]nonan-8-yl)-6-fluor- l,4-dihydro-4-oxo-3-chinolincarbonsäure (CCDC) der Kristallmodifikation2. 8-cyano-l-cyclopropyl-7- (IS, 6S-2,8-diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo-3- quinoline carboxylic acid (CCDC) of crystal modification
D, dadurch gekennzeichnet, daß sie ein Röntgen-Pulverdiffraktogramm mit folgenden Reflexlagen (2 Theta) hoher und mittlerer Intensität aufweist 2 θ (2 Theta)D, characterized in that it has an X-ray powder diffractogram with the following reflex positions (2 theta) of high and medium intensity 2 θ (2 theta)
7,67.6
9,59.5
12,812.8
14,214.2
17,517.5
19 19,3 19,5 20,419 19.3 19.5 20.4
21 21,8 22,6 25,2 27,521 21.8 22.6 25.2 27.5
und einen durch DTA ermittelten Schmelzpunkt von 261°C bis 265°C besitzt.and has a melting point of 261 ° C to 265 ° C determined by DTA.
3. 8-Cyan-l-cyclopropyl-7-(lS,6S-2,8-diazabicyclo[4.3.0]nonan-8-yl)-6-fluor-3. 8-cyano-1-cyclopropyl-7- (IS, 6S-2,8-diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro-
1 ,4-dihydro-4-oxo-3-chinolincarbonsäure (CCDC) der Kristallmodifikation D, dadurch erhältlich, daß man CCDC unbekannter Modifikation oder amorphes CCDC in 1 bis 3 Gewichtsprozent in Wasser löst, den nach einiger Zeit ausgefallenen Feststoff abfiltriert, trocknet und auf eine Temperatur oberhalb der Umwandlungstemperatur erhitzt.1, 4-dihydro-4-oxo-3-quinolinecarboxylic acid (CCDC) of crystal modification D, obtainable by dissolving CCDC of unknown modification or amorphous CCDC in 1 to 3 percent by weight in water, filtering off the solid which has precipitated out after some time, drying and heated to a temperature above the transition temperature.
4. Verfahren zur Herstellung von CCDC der Modifikation D, dadurch gekennzeichnet, daß man CCDC unbekannter Modifikation oder amorphes CCDC in 1 bis 3 Gewichtsprozent in Wasser löst, den nach einiger Zeit ausgefallenen Feststoff abfiltriert, trocknet und auf eine Temperatur oberhalb der Umwand- lungstemperatur erhitzt. 4. Process for the preparation of CCDC of modification D, characterized in that CCDC of unknown modification or amorphous CCDC is dissolved in 1 to 3 percent by weight in water, the solid which has precipitated out after some time is filtered off, dried and heated to a temperature above the transition temperature .
5. Arzneimittel, dadurch gekennzeichnet, daß es neben üblichen Hilfs- und Trägerstoffen CCDC der Modifikation D gemäß einem der Ansprüche 1 und 2 enthält.5. Medicament, characterized in that it contains, in addition to conventional auxiliaries and carriers, CCDC of modification D according to one of claims 1 and 2.
6. Verwendung von CCDC der Modifikation D gemäß einem der Ansprüche 1 und 2 zur Herstellung von Arzneimitteln.6. Use of CCDC of modification D according to one of claims 1 and 2 for the manufacture of medicaments.
7. Verwendung von CCDC der Modifikation D gemäß einem der Ansprüche 1 und 2 in antibakteriellen Mitteln. 7. Use of CCDC of modification D according to one of claims 1 and 2 in antibacterial agents.
EP00909167A 1999-02-26 2000-02-14 Crystal modification d of 8-cyano-1-cyclopropyl-7- (1s, 6s- 2,8- diazabicyclo- 4.3.0] nonan-8-yl) -6-fluoro -1,4-dihydro -4-oxo -3-quinoline carboxylic acid Withdrawn EP1159277A1 (en)

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DE19908448 1999-02-26
DE19908448A DE19908448A1 (en) 1999-02-26 1999-02-26 Crystal modification D of 8-cyan-1-cyclopropyl-7- (1S, 6S-2,8-diazabicylo [4.3.0) nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo-3 -chino incarboxylic acid
PCT/EP2000/001203 WO2000052010A1 (en) 1999-02-26 2000-02-14 Crystal modification d of 8-cyano-1-cyclopropyl-7- (1s, 6s- 2,8- diazabicyclo- [4.3.0] nonan-8-yl) -6-fluoro -1,4-dihydro -4-oxo -3-quinoline carboxylic acid

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DE19854356A1 (en) 1998-11-25 2000-05-31 Bayer Ag Crystal modification A of 8-cyan-1-cyclopropyl-7- (1S, 6S-2,8-diazabicyclo- / 4.3.0 / nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo 3-quinoline carboxylic acid
DE19854355A1 (en) 1998-11-25 2000-05-31 Bayer Ag Crystal modification B of 8-cyan-1-cyclopropyl-7- (1S, 6S-2,8-diazabicyclo- / 4.3.O / nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo 3-quinoline carboxylic acid
DE19908449A1 (en) 1999-02-26 2000-08-31 Bayer Ag Crystal modification C of 8-cyan-1-cyclopropyl-7- (1S, 6S-2,8-diazabicylo- [4.3.0] nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo 3-chino / incarboxylic acid
DE102004015981A1 (en) * 2004-04-01 2005-10-20 Bayer Healthcare Ag New kirstalline form of 8-cyano-1-cyclopropyl-7- (1S, 6S-2,8-diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo 3-quinolinecarboxylic
MX2019009572A (en) 2017-02-13 2019-10-02 Bayer Animal Health Gmbh Liquid composition containing pradofloxacin.

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AU709057B2 (en) * 1994-11-18 1999-08-19 Pharmacia & Upjohn Company A new physically stable solid form of a fluoroquinolone
CN1073112C (en) * 1996-02-23 2001-10-17 拜尔公司 Optionally substituted 8-cyano-1-cyclopropyl-7- (2, 8-diazabicyclo [4.3.0] non-8-yl) -6-fluoro-1, 4-dihydro-4-oxo-3-quinolinecarboxylic acid and derivatives thereof
DE19854356A1 (en) 1998-11-25 2000-05-31 Bayer Ag Crystal modification A of 8-cyan-1-cyclopropyl-7- (1S, 6S-2,8-diazabicyclo- / 4.3.0 / nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo 3-quinoline carboxylic acid
DE19854355A1 (en) 1998-11-25 2000-05-31 Bayer Ag Crystal modification B of 8-cyan-1-cyclopropyl-7- (1S, 6S-2,8-diazabicyclo- / 4.3.O / nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo 3-quinoline carboxylic acid
DE19908449A1 (en) 1999-02-26 2000-08-31 Bayer Ag Crystal modification C of 8-cyan-1-cyclopropyl-7- (1S, 6S-2,8-diazabicylo- [4.3.0] nonan-8-yl) -6-fluoro-1,4-dihydro-4-oxo 3-chino / incarboxylic acid
JP2001242582A (en) * 2000-02-25 2001-09-07 Fuji Photo Film Co Ltd Silver halide photographic sensitive material and method for processing the same

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Free format text: CRYSTAL MODIFICATION D OF 8-CYANO-1-CYCLOPROPYL-7- (1S, 6S- 2,8- DIAZABICYCLO- 4.3.0 NONAN-8-YL) -6-FLUORO -1,4-DIHYDRO -4-OXO -3-QUINOLINE CARBOXYLIC ACID