CH628022A5 - Process for the preparation of an antibiotic derivative - Google Patents

Process for the preparation of an antibiotic derivative Download PDF

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Publication number
CH628022A5
CH628022A5 CH582277A CH582277A CH628022A5 CH 628022 A5 CH628022 A5 CH 628022A5 CH 582277 A CH582277 A CH 582277A CH 582277 A CH582277 A CH 582277A CH 628022 A5 CH628022 A5 CH 628022A5
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CH
Switzerland
Prior art keywords
cyclosporin
antibiotic
formula
preparation
antibiotic derivative
Prior art date
Application number
CH582277A
Other languages
German (de)
Inventor
Rene P Dr Traber
Max Kuhn
Hans Hofmann
Eugen Dr Haerri
Original Assignee
Sandoz 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 Sandoz Ag filed Critical Sandoz Ag
Priority to CH582277A priority Critical patent/CH628022A5/en
Priority to DE19782819094 priority patent/DE2819094A1/en
Priority to DK188778A priority patent/DK148751C/en
Priority to SE7805055A priority patent/SE438860B/en
Priority to FI781348A priority patent/FI59814C/en
Priority to US05/902,794 priority patent/US4220641A/en
Priority to NL7804846A priority patent/NL7804846A/en
Priority to IT49208/78A priority patent/IT1104195B/en
Priority to IE932/78A priority patent/IE46883B1/en
Priority to IE1924/81A priority patent/IE46884B1/en
Priority to IL54666A priority patent/IL54666A/en
Priority to PH21111A priority patent/PH13973A/en
Priority to NZ193028A priority patent/NZ193028A/en
Priority to BE187483A priority patent/BE866810A/en
Priority to PT68013A priority patent/PT68013B/en
Priority to CY125878A priority patent/CY1258A/en
Priority to GB6316/80A priority patent/GB1591934A/en
Priority to GB1815978A priority patent/GB1591933A/en
Priority to ES469567A priority patent/ES469567A1/en
Priority to JP5412578A priority patent/JPS53139789A/en
Priority to CA000302914A priority patent/CA1117046A/en
Priority to AT0333978A priority patent/AT365642B/en
Priority to FR7813625A priority patent/FR2390420A1/en
Priority to AU35947/78A priority patent/AU526582B2/en
Priority to ZA00782680A priority patent/ZA782680B/en
Priority to ES477319A priority patent/ES477319A1/en
Priority to US06/126,215 priority patent/US4289851A/en
Priority to AT246680A priority patent/AT366663B/en
Priority to FI801681A priority patent/FI63561C/en
Priority to FI801682A priority patent/FI63562C/en
Publication of CH628022A5 publication Critical patent/CH628022A5/en
Priority to SE8401134A priority patent/SE8401134D0/en
Priority to SE8401135A priority patent/SE8401135L/en
Priority to SG49284A priority patent/SG49284G/en
Priority to KE344284A priority patent/KE3442A/en
Priority to HK79684A priority patent/HK79684A/en
Priority to MY8500646A priority patent/MY8500646A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K7/00Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
    • C07K7/64Cyclic peptides containing only normal peptide links
    • C07K7/645Cyclosporins; Related peptides
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides

Abstract

The preparation of the antibiotic derivative dihydrocyclosporin D (formula I) <IMAGE> which has antiarthritic activity and is to be used for the treatment of immunological reactions is described. The antibiotic cyclosporin D (formula II) <IMAGE> is catalytically hydrogenated.

Description

       

  
 

**WARNUNG** Anfang DESC Feld konnte Ende CLMS uberlappen **.

 



   PATENTANSPRUCH Verfahren zur Herstellung des neuen Antibiotikum-Derivates Dihydro-cyclosporin D (Formel I),
EMI1.1     
 dadurch gekennzeichnet, dass man das Antibiotikum Cyclosporin D (Formel II)
EMI1.2     
 katalytisch hydriert.



   Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung des neuen Antibiotikum-Derivates Dihydro-cyclosporin D (Formel 1).  
EMI2.1     




     Erfindungsgemäss    gelangt man zu Dihydro-cyclosporin D durch katalytische Hydrierung des Antibiotikums Cyclosporin D



  (Formel II).
EMI2.2     




   Die Hydrierung des Antibiotikums Cyclosporin D wird vorteilhafterweise so ausgeführt, dass man das Antibiotikum Cyclosporin D in einem geeigneten Lösungsmittel in Gegenwart von katalytisch aktiviertem Wasserstoff hydriert. Als Lösungsmittel kommen vorzugsweise niedere aliphatische Alkohole, wie z. B. Methanol, Äthanol, Isopropanol, oder Äthylacetat in Frage. Die Hydrierung erfolgt zweckmässigerweise im neutralen Bereich bei Temperaturen zwischen 20 und 30   "C    und bei Atmosphärendruck oder wenig erhöhtem Druck. Als Katalysator kommt vorzugsweise Palladium, z. B. Palladium auf Kohle, in Frage. Das so erhaltene Hydrierungsprodukt des Antibiotikums Cyclosporin D kann hierauf in an sich bekannter Weise gereinigt werden, z. B. durch Chromatographie an Kieselgel.



   Das als Ausgangsmaterial benützte Antibiotikum Cyclosporin D kann, wie in nachstehendem Beispiel beschrieben, hergestellt werden.



   Eigenschaften von Dihydro-cyclosporin D
Farbloses, amorphes Pulver
Smp.   153-156        [alD20      = -237"    (c = 0,56 in   CHCla)       = -196     (c = 0,58 in   CH3OH)     
Elementaranalyse   C63H115N11012   
Ber.: C 62,1 H 9,5 N 12,6 0 15,8%
Gef.: C 61,8 H 9,5 N 12,9 0 16,0%
Dihydro-cyclosporin D ist bei Raumtemperatur gut löslich in Methanol, Äthanol, Äther, Aceton und chlorierten Kohlenwasserstoffen; praktisch unlöslich in Wasser und in gesättigten Kohlenwasserstoffen.



   UV-Spektrum in   CH3OH:    Endabsorption
IR-Spektrum in CH2CI2: Siehe Fig. 1    lH-NMR-Spektrum    in CDCI3, 90 MHz, mit Tetramethylsilan als internem Standard: siehe Fig. 2
Die   RrWerte    von Dihydro-cyclosporin D im Dünnschichtchromatogramm gehen aus folgender Tabelle hervor: Fliessmittel RrWerte Chloroform-Methanol (96:4) 0,42 Chloroform-Methanol-Eisessig   (90:6:4)    0,57 Chloroform-Aceton (1:1) 0,57 Aceton-Hexan (1:1) 0,43
Polygram SIL G-Folien, Laufstrecke 10 cm.



   Aufgetragene Substanzmenge: 40 y
Sichtbarmachung: mit Joddampf gelbbraune Flecken.



   Das neue Antibiotikum-Derivat Dihydro-cyclosporin D zeichnet sich durch interessante pharmakologische Eigenschaften aus und kann daher als Heilmittel verwendet werden. So hemmt es das Wachstum von Aspergillus niger und Curvularia lunata.



   Insbesondere zeichnet sich die Substanz durch eine immunosuppressive Wirkung aus.



   Die immunosuppressive Wirkung kann wie folgt gezeigt werden: a) Im Lymphozytenstimulationstest nach   Jänossy    wird in vitro in Konzentrationen von 0,01 bis   10,0g/ml    eine starke Hemmung des H3-Thymidin-Einbaus, der Proliferationsrate und der Blataogenese von mit Concanavalin A stimulierten Lymphozyten aus Mäusemilz festgestellt.



   b) Oxazolon-Test an der Maus: Die Abnahme der Ohrschwellung wird als suppressiver Index (SI) ausgedrückt; SI 0,62 nach 5 x 70 mg/kg p.o.



   Aufgrund ihrer immunosuppressiven Wirkung kann die Substanz zur Prophylaxe und Behandlung von Krankheiten, die mit der Beeinflussung der Abwehrreaktion im negativen Sinn zusammenhängen, angewandt werden.



   Das neue Antibiotikum-Derivat Dihydro-cyclosporin D ist ferner indiziert als Antiarthriticum. So bewirkt es im Freund Adjuvans-Arthritis-Latenzzeitversuch an der Ratte in Dosen von ca. 30 mg/kg   p. o,    Körpergewicht/Tag eine starke Hemmung der primären und sekundären Entzündung.



   Die zu verwendenden Dosen variieren naturgemäss je nach Art der Administration und des zu behandelnden Zustandes.



  Im allgemeinen werden jedoch bei Testtieren befriedigende Resultate mit einer Dosis von 60 bis 300 mg/kg Körpergewicht erzielt. Diese Dosis kann nötigenfalls in 2 bis 3 Anteilen oder auch als Retardform verabreicht werden. Für grössere Säugetiere liegt die Tagesdosis bei etwa 300 bis 900 mg. Für orale Applikationen können die Teildosen beispielsweise etwa 150 bis 300 mg des neuen Antibiotikum-Derivates Dihydro-cyclosporin D neben festen und flüssigen Trägersubstanzen enthalten.



   Als Heilmittel kann das neue Antibiotikum-Derivat Dihy dro-cyclosporin D allein oder in geeigneter Arzneiform mit pharmakologisch indifferenten Hilfsstoffen verabreicht wer den.



   In dem nachfolgenden Beispiel, das die Erfindung näher erläutert, ihren Umfang aber in keiner Weise einschränken soll, erfolgen alle Temperaturangaben in Celsiusgraden.



   Beispiel
400 mg Palladium-Kohle   (10%    Palladium) werden in
15 ml Äthanol während 20 Minuten   vorhydriert.Zu    dieser Sus pension des Palladiumkatalysators wird die Lösung von 3,66 g
Cyclosporin D in 30 ml Äthanol zugegeben und darauf bei   24     und einem Druck von 736 mm Quecksilbersäule bis zur been deten Wasserstoffaufnahme hydriert. Anschliessend filtriert man vom Katalysator ab und dampft das Filtrat im Vakuum bei 20 bis   40"    zur Trockne ein. Dabei fällt das dünnschicht chromatographisch einheitliche Dihydro-cyclosporin D als farbloses amorphes Pulver an, das im Hochvakuum während 4 Stunden bei   70"    getrocknet wird.



   Das als Ausgangsmaterial verwendete Cyclosporin D wird wie folgt hergestellt:
500 1 einer Nährlösung, die pro Liter 40 g Glucose, 5 g
Caseinpepton, 5 g MgSO4 -   7H2O,    2 g   KH2P04,    3 g NaN03,
0,5 g   KCI,    0,01 g FeSO4 und entmineralisiertes Wasser enthält, werden mit 501 einer Vorkultur des Stammes NRRL
8044 angeimpft und in einem Stahifermenter unter Rühren (170 UPM) und Belüftung (1 Liter   Luft/Min./Liter    Nährlösung) 13 Tage bei   27     inkubiert (siehe DOS 2 455 859).



   Die Kulturbrühe wird mit der gleichen Menge n-Butyl-acetat ausgerührt, nach Abtrennung der organischen Phase wird diese im Vakuum konzentriert und der Rohextrakt durch 3stufige Verteilung zwischen Methanol-Wasser (9: 1) und Petroläther entfettet. Die methanolische Phase wird abgetrennt, im Vakuum konzentriert und das Rohprodukt durch Zugabe von Wasser ausgefällt. Das nach der Filtration gewonnene Material wird an der 5- bis 7fachen Menge Sephadex LH-20 mit Methanol als Elutionsmittel chromatographiert. Die Spitzenfraktionen werden anschliessend an Kieselgel 60, Korngrösse 0,063-0,20 mm (Merck) mit Hexan-Aceton (2: 1) chromatographiert, wobei die zuerst eluierten Fraktionen vorwiegend Cyclosporin A und Cyclosporin D enthalten, die später eluierten Anteile vorwiegend Cyclosporin C.

  Zur weiteren Reinigung werden die Cyclosporin A- und D-haltigen Fraktionen aus der 2- bis 2,5fachen Menge Aceton   bei -15"    kristallisiert und anschliessend durch zweimalige Chromatographie an Kieselgel 60, Korngrösse 0,063-0,20 mm (Merck) weiter aufgetrennt, wobei die mit Hexan-Aceton (2: 1) zuerst eluierten Fraktionen Cyclosporin D in stark angereicherter Form enthalten. Diese werden in der doppelten Menge Aceton gelöst und   bei 150    kristallisieren lassen. Das dabei erhaltene Rohkristallisat von Cyclosporin D wird zur weiteren Reinigung in der 10fachen Menge Aceton gelöst, mit 2 Gewichtsprozent Aktivkohle versetzt und während 5 Minuten auf   60     erwärmt. 

  Das nach Filtration über Talk erhaltene klare und beinahe farblose Filtrat wird auf ein Drittel des Volumens eingeengt und auf Raumtemperatur erkalten lassen, wobei Cyclosporin D spontan auskristallisiert. Durch Stehenlassen   bei 170    wird die Kristallisation vervollständigt. Die durch Abfiltrieren gewonnenen Kristalle werden mit wenig eiskaltem Aceton gewaschen und anschliessend im Hochvakuum bei   80"    während 2 Stunden getrocknet.



     Smp. 148-151       [a]D20    =   -245 D    (c = 0,52 in CHCl3)   [a]D20    =   -2110    (c = 0,51 in   CH30H).    



  
 

** WARNING ** beginning of DESC field could overlap end of CLMS **.

 



   PATENT CLAIM Process for the production of the new antibiotic derivative dihydro-cyclosporin D (Formula I),
EMI1.1
 characterized in that the antibiotic cyclosporin D (formula II)
EMI1.2
 catalytically hydrogenated.



   The present invention relates to a process for the preparation of the new antibiotic derivative dihydro-cyclosporin D (formula 1).
EMI2.1




     According to the invention, dihydrocyclosporin D is obtained by catalytic hydrogenation of the antibiotic cyclosporin D.



  (Formula II).
EMI2.2




   The hydrogenation of the antibiotic cyclosporin D is advantageously carried out by hydrogenating the antibiotic cyclosporin D in a suitable solvent in the presence of catalytically activated hydrogen. Lower aliphatic alcohols, such as. B. methanol, ethanol, isopropanol, or ethyl acetate in question. The hydrogenation is expediently carried out in the neutral range at temperatures between 20 and 30 ° C. and at atmospheric pressure or slightly elevated pressure. Palladium, for example palladium on carbon, is preferably used as the catalyst. The hydrogenation product of the antibiotic cyclosporin D thus obtained can then be used can be purified in a manner known per se, for example by chromatography on silica gel.



   The antibiotic cyclosporin D used as the starting material can be prepared as described in the example below.



   Properties of Dihydro-cyclosporin D
Colorless, amorphous powder
Mp 153-156 [alD20 = -237 "(c = 0.56 in CHCla) = -196 (c = 0.58 in CH3OH)
Elemental analysis C63H115N11012
Calc .: C 62.1 H 9.5 N 12.6 0 15.8%
Found: C 61.8 H 9.5 N 12.9 0 16.0%
Dihydro-cyclosporin D is readily soluble in methanol, ethanol, ether, acetone and chlorinated hydrocarbons at room temperature; practically insoluble in water and in saturated hydrocarbons.



   UV spectrum in CH3OH: final absorption
IR spectrum in CH2CI2: see FIG. 1 1 H-NMR spectrum in CDCI3, 90 MHz, with tetramethylsilane as internal standard: see FIG. 2
The Rr values of dihydro-cyclosporin D in the thin-layer chromatogram are shown in the following table: eluent Rr values chloroform-methanol (96: 4) 0.42 chloroform-methanol-glacial acetic acid (90: 6: 4) 0.57 chloroform-acetone (1: 1 ) 0.57 acetone-hexane (1: 1) 0.43
Polygram SIL G foils, running distance 10 cm.



   Amount of substance applied: 40 y
Visualization: yellow-brown spots with iodine vapor.



   The new antibiotic derivative dihydro-cyclosporin D is characterized by interesting pharmacological properties and can therefore be used as a remedy. It inhibits the growth of Aspergillus niger and Curvularia lunata.



   In particular, the substance is characterized by an immunosuppressive effect.



   The immunosuppressive effect can be shown as follows: a) In the lymphocyte stimulation test according to Janosy, in vitro concentrations of 0.01 to 10.0 g / ml show a strong inhibition of H3-thymidine incorporation, the proliferation rate and the blataogenesis of those stimulated with concanavalin A. Lymphocytes from mouse spleen were found.



   b) Oxazolone test on the mouse: The decrease in ear swelling is expressed as a suppressive index (SI); SI 0.62 after 5 x 70 mg / kg p.o.



   Due to its immunosuppressive effect, the substance can be used for the prophylaxis and treatment of diseases that are related to influencing the immune response in a negative sense.



   The new antibiotic derivative dihydro-cyclosporin D is also indicated as an antiarthriticum. It does so in Freund's adjuvant arthritis latency experiment on the rat in doses of approx. 30 mg / kg p. o, body weight / day a strong inhibition of primary and secondary inflammation.



   The doses to be used naturally vary depending on the type of administration and the condition to be treated.



  In general, however, satisfactory results are obtained with test animals with a dose of 60 to 300 mg / kg body weight. If necessary, this dose can be administered in 2 to 3 portions or as a slow-release form. For larger mammals, the daily dose is around 300 to 900 mg. For oral applications, the partial doses can contain, for example, about 150 to 300 mg of the new antibiotic derivative dihydro-cyclosporin D in addition to solid and liquid carrier substances.



   As a remedy, the new antibiotic derivative Dihy dro-cyclosporin D can be administered alone or in a suitable pharmaceutical form with pharmacologically indifferent auxiliaries.



   In the following example, which explains the invention in more detail but is not intended to restrict its scope in any way, all the temperatures are given in degrees Celsius.



   example
400 mg palladium-carbon (10% palladium) are in
15 ml of ethanol pre-hydrogenated for 20 minutes. To this Sus pension of the palladium catalyst, the solution of 3.66 g
Cyclosporin D in 30 ml of ethanol was added and then hydrogenated at 24 and a pressure of 736 mm of mercury until the hydrogen uptake ceased. The catalyst is then filtered off and the filtrate is evaporated to dryness in vacuo at 20 to 40 ". The thin-layer chromatographically uniform dihydrocyclosporin D is obtained as a colorless amorphous powder which is dried in a high vacuum at 70" for 4 hours.



   The cyclosporin D used as the starting material is produced as follows:
500 1 of a nutrient solution containing 40 g glucose, 5 g per liter
Casein peptone, 5 g MgSO4 - 7H2O, 2 g KH2P04, 3 g NaN03,
Containing 0.5 g KCI, 0.01 g FeSO4 and demineralized water, with 501 a preculture of the strain NRRL
8044 inoculated and incubated in a steel fermenter with stirring (170 rpm) and aeration (1 liter air / min. / Liter nutrient solution) at 27 for 13 days (see DOS 2 455 859).



   The culture broth is stirred with the same amount of n-butyl acetate, after the organic phase has been separated off, it is concentrated in vacuo and the crude extract is degreased by 3-stage distribution between methanol-water (9: 1) and petroleum ether. The methanolic phase is separated off, concentrated in vacuo and the crude product is precipitated by adding water. The material obtained after filtration is chromatographed on 5 to 7 times the amount of Sephadex LH-20 with methanol as the eluent. The peak fractions are then chromatographed on silica gel 60, particle size 0.063-0.20 mm (Merck) with hexane-acetone (2: 1), the fractions eluted first predominantly containing cyclosporin A and cyclosporin D, the later eluted portions predominantly cyclosporin C.

  For further purification, the cyclosporin A and D-containing fractions are crystallized from the 2 to 2.5 times the amount of acetone at -15 "and then further separated by double chromatography on silica gel 60, particle size 0.063-0.20 mm (Merck), the fractions first eluted with hexane-acetone (2: 1) contain cyclosporin D in a highly enriched form, which is dissolved in twice the amount of acetone and allowed to crystallize at 150. The crude crystallizate of cyclosporin D obtained in this way is 10-fold for further purification The amount of acetone dissolved, mixed with 2 percent by weight activated carbon and heated to 60 for 5 minutes.

  The clear and almost colorless filtrate obtained after filtration over talc is concentrated to a third of the volume and allowed to cool to room temperature, cyclosporin D spontaneously crystallizing out. By standing at 170, the crystallization is completed. The crystals obtained by filtering are washed with a little ice-cold acetone and then dried in a high vacuum at 80 "for 2 hours.



     Mp 148-151 [a] D20 = -245 D (c = 0.52 in CHCl3) [a] D20 = -2110 (c = 0.51 in CH30H).


    

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung des neuen Antibiotikum-Derivates Dihydro-cyclosporin D (Formel I), EMI1.1 dadurch gekennzeichnet, dass man das Antibiotikum Cyclosporin D (Formel II) EMI1.2 katalytisch hydriert.  PATENT CLAIM Process for the production of the new antibiotic derivative dihydro-cyclosporin D (Formula I), EMI1.1  characterized in that the antibiotic cyclosporin D (formula II) EMI1.2  catalytically hydrogenated. Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung des neuen Antibiotikum-Derivates Dihydro-cyclosporin D (Formel 1). **WARNUNG** Ende CLMS Feld konnte Anfang DESC uberlappen**.  The present invention relates to a process for the preparation of the new antibiotic derivative dihydro-cyclosporin D (formula 1). ** WARNING ** End of CLMS field could overlap beginning of DESC **.
CH582277A 1977-05-10 1977-05-10 Process for the preparation of an antibiotic derivative CH628022A5 (en)

Priority Applications (36)

Application Number Priority Date Filing Date Title
CH582277A CH628022A5 (en) 1977-05-10 1977-05-10 Process for the preparation of an antibiotic derivative
DE19782819094 DE2819094A1 (en) 1977-05-10 1978-04-29 CYCLOSPORIN DERIVATIVES, THEIR USE AND MANUFACTURING
DK188778A DK148751C (en) 1977-05-10 1978-05-01 PROCEDURE FOR THE PREPARATION OF CYCLOSPORINE DERIVATIVES
SE7805055A SE438860B (en) 1977-05-10 1978-05-02 PROCEDURE FOR THE PREPARATION OF CYCLOSPORIN D
FI781348A FI59814C (en) 1977-05-10 1978-05-02 FRAMEWORK FOR CYCLOSPORINE DETERMINATION OF THERAPEUTIC THERAPY
US05/902,794 US4220641A (en) 1977-05-10 1978-05-04 Organic compounds
NL7804846A NL7804846A (en) 1977-05-10 1978-05-05 CYCLOSPORINE DERIVATIVES AND METHODS FOR PREPARING AND USING THESE DERIVATIVES.
IT49208/78A IT1104195B (en) 1977-05-10 1978-05-05 CYCLOSPORIN DERIVATIVES THEIR PREPARATION AND THEIR APPLICATION AS MEDICATIONS
GB1815978A GB1591933A (en) 1977-05-10 1978-05-08 Cyclosporin derivatives
IE1924/81A IE46884B1 (en) 1977-05-10 1978-05-08 Cyclosporin derivatives
IL54666A IL54666A (en) 1977-05-10 1978-05-08 Cyclosporin derivatives, their production and pharmaceutical compositions containing them
PH21111A PH13973A (en) 1977-05-10 1978-05-08 Cyclosporin derivatives and pharmaceutical compositions-containing them
NZ193028A NZ193028A (en) 1977-05-10 1978-05-08 Cyclosporin d and pharmaceutical compositions
BE187483A BE866810A (en) 1977-05-10 1978-05-08 NEW CYCLOPEPTIDIC DERIVATIVES, THEIR PREPARATION AND THEIR APPLICATION AS MEDICINAL PRODUCTS
PT68013A PT68013B (en) 1977-05-10 1978-05-08 PROCESS FOR THE PREPARATION OF NOVEL ORGANIC COMPOUNDS WITH PHARMACEUTICAL EFFECT
CY125878A CY1258A (en) 1977-05-10 1978-05-08 Cyclosporin derivatives
GB6316/80A GB1591934A (en) 1977-05-10 1978-05-08 Cyclosporin derivatives
IE932/78A IE46883B1 (en) 1977-05-10 1978-05-08 Cyclosporin derivatives
ES469567A ES469567A1 (en) 1977-05-10 1978-05-08 Organic compounds
AU35947/78A AU526582B2 (en) 1977-05-10 1978-05-09 Cyclosporin d
CA000302914A CA1117046A (en) 1977-05-10 1978-05-09 Organic compounds
AT0333978A AT365642B (en) 1977-05-10 1978-05-09 METHOD FOR PRODUCING THE NEW CYCLOSPORIN D
FR7813625A FR2390420A1 (en) 1977-05-10 1978-05-09 NEW CYCLOPEPTIDIC DERIVATIVES, THEIR PREPARATION AND THEIR APPLICATION AS MEDICINAL PRODUCTS
JP5412578A JPS53139789A (en) 1977-05-10 1978-05-09 Improvement of organic compound
ZA00782680A ZA782680B (en) 1977-05-10 1978-05-10 Improvements in or relating to organic compounds
ES477319A ES477319A1 (en) 1977-05-10 1979-01-31 Procedure for the production of cyclosporine derivatives. (Machine-translation by Google Translate, not legally binding)
US06/126,215 US4289851A (en) 1977-05-10 1980-03-03 Process for producing cyclosporin derivatives
AT246680A AT366663B (en) 1977-05-10 1980-05-09 METHOD FOR PRODUCING THE NEW DIHYDROCYCLOSPORIN D
FI801681A FI63561C (en) 1977-05-10 1980-05-26 FRAMEWORK FOR THE PREPARATION OF THERAPEUTIC THERAPEUTIC DIHYDROCYCLOSPORIN D
FI801682A FI63562C (en) 1977-05-10 1980-05-26 FRAMEWORK FOR THE PROCESSING OF THERAPEUTIC THERAPY OF ISOCYCLOSPORIN D
SE8401134A SE8401134D0 (en) 1977-05-10 1984-03-01 PROCEDURE FOR THE PREPARATION OF DIHYDRO-CYCLOSPORIN D
SE8401135A SE8401135L (en) 1977-05-10 1984-03-01 PROCEDURE FOR PRODUCING ISO CYCLOSPORIN D
SG49284A SG49284G (en) 1977-05-10 1984-07-10 Cyclosporin derivatives
KE344284A KE3442A (en) 1977-05-10 1984-08-22 Cyclosporin derivatives
HK79684A HK79684A (en) 1977-05-10 1984-10-18 Cyclosporin derivatives
MY8500646A MY8500646A (en) 1977-05-10 1985-12-30 Cyclosporin derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH582277A CH628022A5 (en) 1977-05-10 1977-05-10 Process for the preparation of an antibiotic derivative

Publications (1)

Publication Number Publication Date
CH628022A5 true CH628022A5 (en) 1982-02-15

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CH582277A CH628022A5 (en) 1977-05-10 1977-05-10 Process for the preparation of an antibiotic derivative

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AT (1) AT365642B (en)
BE (1) BE866810A (en)
CH (1) CH628022A5 (en)
ES (1) ES477319A1 (en)
ZA (1) ZA782680B (en)

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PL210795B1 (en) 2001-10-19 2012-03-30 Isotechnika Inc The method of producing the ISATX247 enriched isomer (E), the method of producing the ISATX247 enriched mixture of the (Z) isomer, the method of stereoselective synthesis of the (E) ISATX247 isomer, the method of stereoselective synthesis of the (Z) isomer ISATX247 and the method of producing the mixture of ISATX247 isomers

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AT365642B (en) 1982-02-10
BE866810A (en) 1978-11-08
ZA782680B (en) 1979-12-27
ES477319A1 (en) 1979-10-16
ATA333978A (en) 1981-06-15

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