EP0183691A1 - Process for preparing adriamycine and halide salts thereof - Google Patents

Process for preparing adriamycine and halide salts thereof

Info

Publication number
EP0183691A1
EP0183691A1 EP19840902361 EP84902361A EP0183691A1 EP 0183691 A1 EP0183691 A1 EP 0183691A1 EP 19840902361 EP19840902361 EP 19840902361 EP 84902361 A EP84902361 A EP 84902361A EP 0183691 A1 EP0183691 A1 EP 0183691A1
Authority
EP
European Patent Office
Prior art keywords
alkyl
adriamycine
derivative
solution
daunomycine
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.)
Withdrawn
Application number
EP19840902361
Other languages
German (de)
French (fr)
Inventor
János BALINT
Szabolcs Borbely
Zsuzsanna Emri
József FAZEKAS
György TOTH
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.)
Teva Pharmaceutical Works PLC
Original Assignee
Biogal Gyogyszergyar Rt
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 Biogal Gyogyszergyar Rt filed Critical Biogal Gyogyszergyar Rt
Publication of EP0183691A1 publication Critical patent/EP0183691A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07HSUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H15/00Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
    • C07H15/20Carbocyclic rings
    • C07H15/24Condensed ring systems having three or more rings
    • C07H15/252Naphthacene radicals, e.g. daunomycins, adriamycins

Definitions

  • This invention relates to a new process for preparing adriamycine and halide salts thereof.
  • adriamycine is an antitumor antibiotics which is used in the form of a halide for the treatment of tumouroua diseases.
  • Adriamycine can be produced directly by fermentation (Belgian Patent Specification Ho. 713,773) or by semisynthetic route from daunomycine (German Patent Specification No. 1,917,874 and US Patent Specification No. 4,012,448).
  • Adriamycine can be prepared by a more simple way from daunomycine through the 14-halo derivative of the latter, without changing the structure of the sugar moiety of the molecule (German patent specification No.
  • the bromination can directly be carried out by using a solution of bromine in chloroform, while in the course of iodination the amino group of the daunozamine is protected by transforming the latter into an acyl derivative or a Schiff base, thereafter the protecting group is removed and the adriamycine thus obtained is purified by column chromatography.
  • the simpliest way for preparing adriamycine from daunomycine by semi-synthetic route appears to be the direct bromination of daunomycine.
  • the daunozamine and the side-chain containing 14 carbon atoms can easily be splitted off, thus 14-bromodaunomycinone and other decomposition products without side-chain are formed.
  • the bromination reaction results in a rather low, i.e. 58-59 %, yield.
  • the yield based on the starting daunomycine is only about 6 to 13 %.
  • the present invention is aimed at developing a semi-synthetic process starting from daunomycine which enables to obtain adriamycine by a more simple and more economic way.
  • the process of the invention is carried out by reacting daunomycine or a halide salt thereof in an anhydrous organic solvent system in the presence of a solvent suitable for ketal formation, preferably in the presence of an alkyl ortoalkanecarboxylate or alkyl alkanoylate containing 1 to 6 carbon atoms in the alkyl moieties, with bromine, suitably at a temperature of 0 to 20 °C, preferably at 8 °C for 3 to 30 hours, preferably for 5 hours, thereafter transforming the formed 14-bromo derivative to the 14- hydroxy derivative in a manner known per se, optionally acidifying the solution with a haloid acid and recovering the product, optionally after purification.
  • a solvent suitable for ketal formation preferably in the presence of an alkyl ortoalkanecarboxylate or alkyl alkanoylate containing 1 to 6 carbon atoms in the alkyl moieties
  • bromine suitably at a temperature of 0 to 20 °C,
  • the triethyl orthoformate reacts with the enolic form of the 13- keto group of the daunomycine molecule formed due to the bromine being present, thus a ketal is produced which stabilizes the molecule, prohibites the side-reactions and the alkyl group cleavage.
  • the solvent suitable for ketal formation e.g. the triethyl orthoformate
  • the 11-bromodaunomycine derivative can be achieved in higher yields.
  • the 14- bromodaunomycine derivative need not to be recovered as the acetonic solution of 14-bromodaunomycine treated with hydrogen bromide can be directly used in a process where the bromo atom is replaced by a hrdroxyl group. This procedure can be carried out by a ranner well known in the art.
  • this process can more preferably be carried out through the 14-formyloxy derivative than by the direct conversion of the bromo atom to hydroxyl group by treating with sodium hydroxyde.
  • the hydrolysis of the 14-formyloxy derivative at pH 7.6 to 8.0 assures much more favourable conditions for the adriamycine being less resistant against alkaline agents than acids, than the basic treatment at pH 10.3.
  • the reaction mixture is preferably extracted with chloroform at pH 3.5 to 4.0 in order to remove the aglycone-type decomposition products.
  • the pH of 7.6 to 8.0 required to the hydrolysis is preferably adjusted with a 5 % by weight solution of sodium bicarbonate, the adriamycine base formed is recovered from the reaction mixture by repeated extraction with chloroform.
  • the extracts are concentrated, treated with a solution of hydrochloric acid in methanol in order to form adriamycine hydrochloride which is then precipitated from the solution with ether.
  • Adriamycine is used in the form of a halide salt for the preparation of medicaments, optionally after purification.
  • the purification is carried out in a manner known per se.
  • the reaction mixture is poured into a mixture of 230 ml. of diethyl ether and 120 ml. of petrol ether, the product precipitated is filtered off, washed with 3 x 30 ml. of diethyl ether in order to remove impurities. Then it is dissolved in a mixture of 40 ml. of acetone and 40 ml. of 0.25 N aqueous hydrogen bromide and kept at 25 °G for 17 hours. Thereafter a solution of 2.0 g. (29.4 millimoles) of sodium formate in 20 ml. of deionized water is added to the solution and stirred for 43 hours at 25 °C.
  • the pH of the reaction mixture is adjusted to 3.7 by adding 1 N hydrochloric acid solution and extracted with 50 ml. of chloroform five times. Then the pH of the aqueous phase is adjusted to 7.6 by adding a. 5 % solution of sodium bicarbonate and the adriamycine base is extracted from the mixture. The extraction is continued until the chloroformic extract is coloured.
  • the chloroformic extracts are washed with 5 To of deionized water, calculated for the volume of the extracts, and dried over anhydrous sodium sulphate. After the drying agent is filtered off, the solution is concentrated to a volume of 50 ml.
  • the free base is transformed to its hydrochloric salt by treating with a calculated amount of anhydrous hydrochloric acid solution in methanol and the salt is precipitated with 500 ml. of diethyl ether.
  • the product precipitated is filtered, washed four times with 30 ml. of diethyl ether and dried in vacuo at room temperature. Yield: 0.61 g, (42.4 % ) of adriamycine hydrochloride.
  • the analytical data of the product are listed below.
  • the pH of the reaction mixture is adjusted to 3.7 by adding 1 N hydrochloric solution and the mixture is extracted with chloroform five times. Then the pH of the aqueous layer is adjusted to 7.6 by adding a 5 % solution of sodium bicarbonate and the adriamycine base is recovered by extraction. The extraction is continued until the chloroformic extract becomes uncoloured.
  • the chloroformic extracts are washed with 5 To of deionized water, calculated for the volume of the extracts, then dried over anhydrous sodium sulphate. After filtering off the drying agent, the solution is concentrated in vacuo to a volume of 25 ml.
  • the free base is transformed into its hydrochloric salt by treating with a calculated amount of
  • Example 4 0.70 g. (1.24 mmoles) daunomycine hydrochloride are dissolved in a mixture of 10 ml. of anhydrous methyl alcohol, 30 ml. of dioxane and 0.8 ml. (4.35 mmoles) of triethyl orthoacetate. To the mixture thus obtained 0.25 g. (1.58 mmoles) of bromine in 2.7 ml, of anhydrous chloroform are added, the flask is closed and kept at 6 °C for 6 hours.
  • the reaction mixture is poured into a mixture of 140 ml. of diethyl ether and 60 ml. of petrol ether, the product precipitated is filtered off, the impurities are removed by washing with 3 x 15 ml. of diethyl ether.
  • the product is dissolved in a mixture of 20 ml. of acetone and 20 ml, of 0.25 N aqueous hydrogen bromide and kept at 25 °G for 17 hours. Then a solution of 1.0 g. (l4.7 mmoles) of sodium formate in 10 ml. of deionized water is added to the reaction mixture and the latter stirred at a temperature of 25 °C for 48 hours.
  • the identifying data of the end product are the same as indicated in Example 1.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Molecular Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Saccharide Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Les sels d'halogénure d'adriamycine sont utiles comme antibiotiques antitumoraux. L'adriamycine et ses sels d'halogénure sont préparés, en obtenant des rendements élevés, à partir de la daunomycine ou ses sels d'halogénure en faisant réagir la daunomycine ou un sel d'halogénure de celle-ci avec du brome dans un système de solvant organique anhydre en présence d'un solvant approprié à la formation d'un cétal, en transformant le dérivé 14-bromo en un dérivé 14-hydroxy d'une manière connue en soi, éventuellement en acidifiant la solution avec un acide haloïde et en récupérant le produit éventuellement après purification.Adriamycin halide salts are useful as anti-tumor antibiotics. Adriamycin and its halide salts are prepared, in high yields, from daunomycin or its halide salts by reacting daunomycin or a halide salt thereof with bromine in a system anhydrous organic solvent in the presence of a solvent suitable for the formation of a ketal, by converting the 14-bromo derivative into a 14-hydroxy derivative in a manner known per se, optionally by acidifying the solution with a haloid acid and by recovering the product optionally after purification.

Description

PROCESS FOR PREPARING ADRIAMYCINE AND HALIDE SALTS
THEREOF
Background of the invention
This invention relates to a new process for preparing adriamycine and halide salts thereof.
As it is well known from the art adriamycine is an antitumor antibiotics which is used in the form of a halide for the treatment of tumouroua diseases.
Adriamycine can be produced directly by fermentation (Belgian Patent Specification Ho. 713,773) or by semisynthetic route from daunomycine (German Patent Specification No. 1,917,874 and US Patent Specification No. 4,012,448).
The semi-synthetic processes starting from daunomycine and including the preparation of daunomycinone and 7-deoxydaunomycinone as intermediates are very complicated as not only the starting material has to be transformed in the course of the procedure, but the sugar component of adriamycine, the daunozamine has also to be bonded to the molecule.
Adriamycine can be prepared by a more simple way from daunomycine through the 14-halo derivative of the latter, without changing the structure of the sugar moiety of the molecule (German patent specification No.
1,917,374).
According to this process the bromination can directly be carried out by using a solution of bromine in chloroform, while in the course of iodination the amino group of the daunozamine is protected by transforming the latter into an acyl derivative or a Schiff base, thereafter the protecting group is removed and the adriamycine thus obtained is purified by column chromatography. The simpliest way for preparing adriamycine from daunomycine by semi-synthetic route appears to be the direct bromination of daunomycine. However, when reproducing this process, we found that the daunozamine and the side-chain containing 14 carbon atoms can easily be splitted off, thus 14-bromodaunomycinone and other decomposition products without side-chain are formed. Thus, the bromination reaction results in a rather low, i.e. 58-59 %, yield. In view of the fact that the molecule is sensitive to acids and bases and susceptible to oxidation, in the course of the replacement of the bromine atom of 14-bromodaunomycine by a hydroxyl group and when the purification of the products is effected further losses occur, thus the yield based on the starting daunomycine is only about 6 to 13 %.
The present invention is aimed at developing a semi-synthetic process starting from daunomycine which enables to obtain adriamycine by a more simple and more economic way.
Summary of the invention
The process of the invention is carried out by reacting daunomycine or a halide salt thereof in an anhydrous organic solvent system in the presence of a solvent suitable for ketal formation, preferably in the presence of an alkyl ortoalkanecarboxylate or alkyl alkanoylate containing 1 to 6 carbon atoms in the alkyl moieties, with bromine, suitably at a temperature of 0 to 20 °C, preferably at 8 °C for 3 to 30 hours, preferably for 5 hours, thereafter transforming the formed 14-bromo derivative to the 14- hydroxy derivative in a manner known per se, optionally acidifying the solution with a haloid acid and recovering the product, optionally after purification.
Detailed description of the invention
Surprisingly we found that if the bromination is carried out in the presence of a solvent suitable for ketal formation, e.g. in the presence of triethyl orthoformate, the molecule obtained is much more stable, deacetylation reaction does not occur, the glycosidic bond cleavage is fairly less, therefore the 14-bromodaunomycine derivative can be prepared in a substantially higher yield.
According to our experiments e.g. the triethyl orthoformate reacts with the enolic form of the 13- keto group of the daunomycine molecule formed due to the bromine being present, thus a ketal is produced which stabilizes the molecule, prohibites the side-reactions and the alkyl group cleavage.
The solvent suitable for ketal formation, e.g. the triethyl orthoformate, can preferably be used in a molar amount of 1 : 3-4, calculated for daunomycine or the hydrochloride salt thereof. Thus the 11-bromodaunomycine derivative can be achieved in higher yields. By using e.g. triethyl orthoacetate, methyl formate or ethyl acetate, similar good yields can also be achieved, According to the process of the invention the 14- bromodaunomycine derivative need not to be recovered as the acetonic solution of 14-bromodaunomycine treated with hydrogen bromide can be directly used in a process where the bromo atom is replaced by a hrdroxyl group. This procedure can be carried out by a ranner well known in the art.
According to our experiments this process can more preferably be carried out through the 14-formyloxy derivative than by the direct conversion of the bromo atom to hydroxyl group by treating with sodium hydroxyde. The hydrolysis of the 14-formyloxy derivative at pH 7.6 to 8.0 assures much more favourable conditions for the adriamycine being less resistant against alkaline agents than acids, than the basic treatment at pH 10.3.
Before the alkaline hydrolysis of 4-formyloxydaunomycine the reaction mixture is preferably extracted with chloroform at pH 3.5 to 4.0 in order to remove the aglycone-type decomposition products. The pH of 7.6 to 8.0 required to the hydrolysis is preferably adjusted with a 5 % by weight solution of sodium bicarbonate, the adriamycine base formed is recovered from the reaction mixture by repeated extraction with chloroform. The extracts are concentrated, treated with a solution of hydrochloric acid in methanol in order to form adriamycine hydrochloride which is then precipitated from the solution with ether.
Adriamycine is used in the form of a halide salt for the preparation of medicaments, optionally after purification. The purification is carried out in a manner known per se.
The present invention is illustrated by the aid of the following non-limiting examples.
Example 1
1.4 g. (2.43 millimoles) of daunomycine hydrochloride are dissolved in a mixture of 20 ml. of anhydrous methyl alcohol, 56 ml. of anhydrous dioxane and 1.4 ml. (3.47 millimoles) of anhydrous triethyl orthoformate. To the solution thus obtained 0.5 g. (3.16 millimoles) of bromine dissolved in 5.4 ml. of anhydrous chloroform are added, the flask is closed and kept at 3 °C for 5 hours.
The reaction mixture is poured into a mixture of 230 ml. of diethyl ether and 120 ml. of petrol ether, the product precipitated is filtered off, washed with 3 x 30 ml. of diethyl ether in order to remove impurities. Then it is dissolved in a mixture of 40 ml. of acetone and 40 ml. of 0.25 N aqueous hydrogen bromide and kept at 25 °G for 17 hours. Thereafter a solution of 2.0 g. (29.4 millimoles) of sodium formate in 20 ml. of deionized water is added to the solution and stirred for 43 hours at 25 °C.
The pH of the reaction mixture is adjusted to 3.7 by adding 1 N hydrochloric acid solution and extracted with 50 ml. of chloroform five times. Then the pH of the aqueous phase is adjusted to 7.6 by adding a. 5 % solution of sodium bicarbonate and the adriamycine base is extracted from the mixture. The extraction is continued until the chloroformic extract is coloured.
The chloroformic extracts are washed with 5 To of deionized water, calculated for the volume of the extracts, and dried over anhydrous sodium sulphate. After the drying agent is filtered off, the solution is concentrated to a volume of 50 ml. The free base is transformed to its hydrochloric salt by treating with a calculated amount of anhydrous hydrochloric acid solution in methanol and the salt is precipitated with 500 ml. of diethyl ether. The product precipitated is filtered, washed four times with 30 ml. of diethyl ether and dried in vacuo at room temperature. Yield: 0.61 g, (42.4 % ) of adriamycine hydrochloride. The analytical data of the product are listed below.
C27H29NO11.HCl (Mo lar weight: 530.0) Elsmentar analysis:
Calculated: C % = 55.9, H % = 5.21, N% = 2.42,
Cl % = 6.11
Found: C % = 55.52, H% = 5.10, N % = 2.04, Cl % = 6.24 Melting point: 202 - 206 °C (with decomposition) Thin-layer-chromatography: Adsorbent: Kieselgel 60 (Merck 5724) impregnated with a 1 % solution of oxalic acid Eluent: the upper layer of a 4:1:5 mixture of n-butanol/- acetic acid/water Development: 10 cm Rf value: 0.33
Infrared spectra: (Perkin-Elmer 397 type apparatus, -1
NMR:
( Bruker WP 200 SY impulse FT apparatus ; 1H-NMR, DMSO-d6, room temperature , delta ppm, 250 MHz )
C
x: changeable assignations
Example 2
1.4 g. (2.48 millimoles) of daunomycine hydrochloride are dissolved in a mixture of 40 ml. of anhydrous methyl alcohol and 0.55 ml. (8.7 mmoles) of anhydrous methyl formate. To the solution thus obtained 0.5 g. (3.16 mmoles) of bromine in 5.4 ml. of anhydrous chloroform are added, the flask is closed and kept at 10 °C for 4.5 hours. The reaction mixture is poured into a mixture of
280 ml, of diethyl ether and 120 ml. of petrolether, the product precipitated is filtered off, the impurities are removed by washing with 3 x 30 ml, of diethyl ether. The product is dissolved in a mixture of 40 ml. of acetone and 40 ml. of 0.25 N aqueous hydrogen bromide and kept at a temperature of 25 °C for 17 hours. Then a solution of 2.0 g. (29.4 mmoles) of sodium formate in 20 ml. of deionized water is added to the reaction mixture and the solution is stirred for 48 hours at 25 °C.
The reaction mixture thus obtained is worked up according to Example 1.
Yield: 0.55 g. (38,6 % ) The identifying data of the end product are the same as given in Example 1, Example 3
0,70 g. (1,24 mmoles) of daunomycine hydrochloride are dissolved in a mixture of 10 ml, of anhydrous methyl alcohol, 30 ml, of anhydrous dioxane and 0,42 ml, (4.30 mmoles) of ethyl acetate. To the solution thus obtained 0,25 g. (l.58 mmoles) of bromine in 2.7 ml. of anhydrous chloroform are added, the flask is closed and kept at 6°C for 6 hours. The reaction mixture is poured into a mixture of 140 ml. of diethyl ether and 60 ml. of petrol ether, the product precipitated is filtered off and the impurities are removed by washing with 3 x 15 ml. of diethyl ether. The product is dissolved in a mixture of 20 ml, of acetone and 20 ml, of 0,25 N aqueous hydrogen bromide and kept at a temperature of 25 °C for 17 hours. Thereafter a solution of 1,0 g, (14,7 mmoles) of sodium formate in 10 ml, of deionized water is added to the reaction mixture and the latter is stirred at 25 °C for 48 hours.
The pH of the reaction mixture is adjusted to 3.7 by adding 1 N hydrochloric solution and the mixture is extracted with chloroform five times. Then the pH of the aqueous layer is adjusted to 7.6 by adding a 5 % solution of sodium bicarbonate and the adriamycine base is recovered by extraction. The extraction is continued until the chloroformic extract becomes uncoloured. The chloroformic extracts are washed with 5 To of deionized water, calculated for the volume of the extracts, then dried over anhydrous sodium sulphate. After filtering off the drying agent, the solution is concentrated in vacuo to a volume of 25 ml. The free base is transformed into its hydrochloric salt by treating with a calculated amount of
0.6 N anhydrous methanolic hydrochloric solution, thereafter the salt is precipitated by 250 ml. of diethyl ether. The product precipitated is filtered off, washed with 15 ml, of diethyl ether four times and dried in vacuo at room temperature.
Yield: 0.29 g. (40.3 %)
The identifying data are the same as indicated in Example 1. Example 4 0.70 g. (1.24 mmoles) daunomycine hydrochloride are dissolved in a mixture of 10 ml. of anhydrous methyl alcohol, 30 ml. of dioxane and 0.8 ml. (4.35 mmoles) of triethyl orthoacetate. To the mixture thus obtained 0.25 g. (1.58 mmoles) of bromine in 2.7 ml, of anhydrous chloroform are added, the flask is closed and kept at 6 °C for 6 hours.
The reaction mixture is poured into a mixture of 140 ml. of diethyl ether and 60 ml. of petrol ether, the product precipitated is filtered off, the impurities are removed by washing with 3 x 15 ml. of diethyl ether. The product is dissolved in a mixture of 20 ml. of acetone and 20 ml, of 0.25 N aqueous hydrogen bromide and kept at 25 °G for 17 hours. Then a solution of 1.0 g. (l4.7 mmoles) of sodium formate in 10 ml. of deionized water is added to the reaction mixture and the latter stirred at a temperature of 25 °C for 48 hours.
The reaction mixture thus obtained is worked up according to Example 3.
Yield: 0.30 g. (41.7 % )
The identifying data of the end product are the same as indicated in Example 1.

Claims

What we claim is:
1. Process for the preparation of adriamycine and the halide salts thereof from daunomycine or the halide salts thereof which comprises reacting daunomycine or a halide salt thereof with bromine in an anhydrous organic solvent system in the presence of a solvent suitable for ketal formation, then transforming the formed 14-bromo derivative into a 14-hydroxy derivative in a manner known per se, optionally acidifying the solution with a haloid acid and recovering the product, optionally after purification.
2. The process of claim 1 wherein the bromination is carried out at 0 to 20 °C, preferably at 8 °C, for 3 to 30 hours, preferably for 5 hours.
3. The process of claim 1 or 2 wherein an alkyl orthoalkanecarboxylate or alkyl alkanoylate containing 1 to 6 carbon atoms in the alkyl moieties is used as solvent suitable for ketal formation.
4. The process of claim 3 wherein triethyl orthoformate is used as alkyl orthoalkanecarboxilate.
5. The process of claim 3 wherein ethyl acetate is used as alkyl alkanoylate.
6. The process of any of the preceeding claims wherein a mixture of methanol and dioxane of 1 : 2-5 volume rate is used as anhydrous organic solvent system.
7. The process of any of the preceeding claims wherein the transformation of the 14-bromo derivative to the 14-hydroxy derivative is carried out by precipitating the 14-bromo derivative in an organic solvent system, then reacting with hydrogen bromide in the presence of acetone and an alkaline formate, preferably sodium formate, extracting the reaction mixture thus obtained in two steps with chloroform by adjusting the pH and recovering the product optionally as a halide salt.
EP19840902361 1984-06-14 1984-06-14 Process for preparing adriamycine and halide salts thereof Withdrawn EP0183691A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/HU1984/000037 WO1986000073A1 (en) 1984-06-14 1984-06-14 Process for preparing adriamycine and halide salts thereof

Publications (1)

Publication Number Publication Date
EP0183691A1 true EP0183691A1 (en) 1986-06-11

Family

ID=10980572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840902361 Withdrawn EP0183691A1 (en) 1984-06-14 1984-06-14 Process for preparing adriamycine and halide salts thereof

Country Status (5)

Country Link
EP (1) EP0183691A1 (en)
JP (1) JPS61502956A (en)
DK (1) DK157082C (en)
FI (1) FI860683A (en)
WO (1) WO1986000073A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0848009A1 (en) 1996-12-16 1998-06-17 Pharmachemie B.V. A process for preparing epirubicin or acid addition salts thereof from daunorubicin

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5026691A (en) * 1987-03-30 1991-06-25 The Upjohn Company Combination of minoxidil and an antiinflammatory agent for treating patterned alopecia
US4997922A (en) * 1988-09-06 1991-03-05 Sanraku Incorporated Anthracycline derivatives
IT1230505B (en) * 1988-10-11 1991-10-25 Sicor Spa PROCEDURE FOR THE CONVERSION OF DAUNORUBICINA IN DOXORUBICINA.
US7388083B2 (en) 2005-03-07 2008-06-17 Solux Corporation Epimerization of 4′-C bond and modification of 14-CH3-(CO)-fragment in anthracyclin antibiotics
WO2007070820A2 (en) 2005-12-13 2007-06-21 Solux Corporation Method for preparing 4-demethyldaunorubicin
US8802830B2 (en) 2005-12-20 2014-08-12 Solux Corporation Synthesis of epirubicin from 13-dihydrodaunorubicine
US8357785B2 (en) 2008-01-08 2013-01-22 Solux Corporation Method of aralkylation of 4′-hydroxyl group of anthracylins
IT1398273B1 (en) * 2009-05-08 2013-02-22 Antibioticos Spa PROCEDURE FOR THE PREPARATION OF 14-BROMO DAUNOMICINA
IT1397234B1 (en) * 2010-01-08 2013-01-04 Antibioticos Spa PROCESS FOR THE PREPARATION OF DOXORUBICINE.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL145536B (en) * 1968-04-12 1975-04-15 Farmaceutici Italia METHOD OF PREPARING A NEW ANTIBIOTIC OR ITS AGLYCON.
GB1511680A (en) * 1975-11-18 1978-05-24 Farmaceutici Italia Daunosaminyl anthracyclinones
AT358736B (en) * 1976-12-22 1980-09-25 Erba Farmitalia METHOD FOR PRODUCING NEW ANTITUM ORGLYCOSIDES
JPS56156300A (en) * 1980-04-26 1981-12-02 Microbial Chem Res Found Novel preparative method of anthracyclin derivative

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8600073A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0848009A1 (en) 1996-12-16 1998-06-17 Pharmachemie B.V. A process for preparing epirubicin or acid addition salts thereof from daunorubicin

Also Published As

Publication number Publication date
DK59486A (en) 1986-02-06
DK157082C (en) 1990-04-09
JPS61502956A (en) 1986-12-18
FI860683A0 (en) 1986-02-14
DK59486D0 (en) 1986-02-06
DK157082B (en) 1989-11-06
WO1986000073A1 (en) 1986-01-03
FI860683A (en) 1986-02-14

Similar Documents

Publication Publication Date Title
JP2751385B2 (en) Process for producing erythromycin A oxime and its salt
JPH08208681A (en) Production of sucrose derivative
JPH0212478B2 (en)
EP0183691A1 (en) Process for preparing adriamycine and halide salts thereof
US4340729A (en) 5'-Deoxy-5-fluorouridine
IE46165B1 (en) Daunomycinone derivatives
JPH11502215A (en) Production of anthracycline antibiotics
EP0678501B1 (en) Process for producing N-chloroacetylglutamine
US5220002A (en) Deacetylcolchicine derivatives
EP0053919B1 (en) Cephamycin c derivative and its preparation
KR950013771B1 (en) Process for preparing 14-chlorodaunomyan and (2"r)-4'-0-tetrahydropyranyladriamyin
IE920527A1 (en) New and improved solvent-free synthesis of ethereally¹substituted blocked monosaccharides and the selective¹hydrolysis thereof
US5212323A (en) Process for producing 6-(3-dimethylaminopropionyl)forskolin
JP2906228B2 (en) Glucopyranose derivative salt
JP3134010B2 (en) Desalanine benanomycin A derivatives and methods for their production
JP2000143688A (en) Production of zeaxanthin mono-beta-glucoside
JPH0139420B2 (en)
KR850000528B1 (en) Method of preparing for antracycline derivate
NO860500L (en) PROCEDURE FOR THE PREPARATION OF ADRIAMYCIN AND THE HALOGENIDE SALTS THEREOF.
KR850001961B1 (en) Process for manufacturing 3'-acylated macrolide antibiotics
JPS6178797A (en) 4-demethoxyadriamycin
JP2894366B2 (en) Method for producing deacetylcolchicine
KR930001165B1 (en) Process for the preparation of 4'-deoxydoxorubicin
JPS6143147A (en) Manufacture of gamma-dimethylamino-l-beta- hydroxybutyric acid
JP3398176B2 (en) Decomposition method of cephalosporin prodrug ester to 7-amino-3-methoxymethylcef-3-em-4-carboxylic acid

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19860214

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB LI NL SE

17Q First examination report despatched

Effective date: 19870812

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19871222

RIN1 Information on inventor provided before grant (corrected)

Inventor name: EMRI, ZSUZSANNA

Inventor name: TOTH, GYOERGY

Inventor name: FAZEKAS, JOZSEF

Inventor name: BALINT, JANOS

Inventor name: BORBELY, SZABOLCS