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EP1105402A1 - Verfahren zur industriellen herstellung von diosmin durch die reaktion von hesperidin mit jod und pyridin - Google Patents

Verfahren zur industriellen herstellung von diosmin durch die reaktion von hesperidin mit jod und pyridin

Info

Publication number
EP1105402A1
EP1105402A1 EP99936746A EP99936746A EP1105402A1 EP 1105402 A1 EP1105402 A1 EP 1105402A1 EP 99936746 A EP99936746 A EP 99936746A EP 99936746 A EP99936746 A EP 99936746A EP 1105402 A1 EP1105402 A1 EP 1105402A1
Authority
EP
European Patent Office
Prior art keywords
pyridine
iodine
hesperidin
reaction
diosmin
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Withdrawn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
EP99936746A
Other languages
English (en)
French (fr)
Inventor
Eric Esprimont
Hervé ROSSET
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.)
Innokem SARL
Original Assignee
Innokem SARL
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 Innokem SARL filed Critical Innokem SARL
Publication of EP1105402A1 publication Critical patent/EP1105402A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07HSUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H17/00Compounds containing heterocyclic radicals directly attached to hetero atoms of saccharide radicals
    • C07H17/04Heterocyclic radicals containing only oxygen as ring hetero atoms
    • C07H17/06Benzopyran radicals
    • C07H17/065Benzo[b]pyrans
    • C07H17/07Benzo[b]pyran-4-ones

Definitions

  • the present invention relates to a process for the industrial manufacture of diosmin from hesperidin.
  • Diosmin is a bioflavonoid known in its natural state and is found for example in the peel of citrus fruits and is used for its venotonic and protective application of the liver. On an industrial level, the hemisynthesis of diosmin is carried out using the natural product hesperidin.
  • the manufacturing processes known to date consist of reacting:
  • the invention relates more precisely, among these methods, those in which hesperidin is reacted as main reagents with iodine and pyridine, in the presence of a mineral base.
  • FR-A-2411 845 and FR-A-2402655 describe such processes, in which the starting reaction mixture is additionally added with an aqueous sodium hydroxide solution.
  • the process of the invention which aims at the industrial manufacture of diosmin from hesperidin by reaction with iodine and pyridine, is a process of the general type taught by FR-A-2 411 845 and FR-A-2402 655 mentioned above, that is to say comprising the steps of: a) preparation of a reaction medium by mixing hesperidin, iodine, pyridine and an inorganic alkali metal base or alkaline earth; b) heating this reaction medium, to obtain a reaction product containing diosmin, and c) purifying the reaction product by elimination of the pyridine and iodine residues.
  • the reaction medium prepared in step a) is essentially devoid of water, the mineral base being provided in solid form.
  • the mineral base of an alkali or alkaline earth metal is in particular a base chosen from the group comprising sodium hydroxide, potassium hydroxide and calcium carbonate.
  • the incorporation without addition of water of this mineral base of an alkali or alkaline-earth metal into the reaction medium for the formation of diosmin makes it possible, by its catalytic effect, to obtain the latter with very high purity in terms of residual iodine traces.
  • the purification step can be improved by providing in step c) of purification a sub-step for the elimination of iodized residues by dissolving in a solvent comprising a secondary amine, in particular morpholine.
  • the residual iodine content at the end of the operation is in a range much greater than 200 ppm, while in the conditions of the invention the residual iodine content is less than 200 ppm, typically of the order of 80 to 100 ppm.
  • the Applicant has found that one could advantageously provide, in the purification step, a sub-step for the elimination of pyridine by addition of water and azeotropic water-pyridine distillation. Evaporation in situ of all of the pyridine by such distillation makes it possible to obtain a residual pyridine level of less than 50 ppm, which is not the case. not possible to obtain by conventional means of purification.
  • the proportion of the mineral base of alkali or alkaline-earth metal relative to hesperidin is between 1 and 2, preferably approximately 1, 8, molar equivalents
  • the heating of the reaction medium in step b) is operated at a temperature between 70 and 110 ° C, preferably about 90 ° C, for a period between 5 to 7 hours, preferably about 6 hours.
  • the applicant has found that, by providing, according to the invention, the incorporation into a reaction medium of a mineral base of alkali or alkaline-earth metal, it was possible, owing to the catalytic effect obtained, substantially reduce the reaction time compared to conventional pyridine-iodine processes, typically a reduction of around 40%.
  • Elimination of morpholine the product isolated on the filter is dissolved again in a 5% sodium hydroxide solution. The medium is neutralized with sulfuric acid. The suspension is filtered and washed with hot water at 60 ° C. After drying, the diosmin is obtained with a yield of 80% and a purity meeting the standards of the pharmacopoeia, in particular a residual iodine content of less than 200 ppm and a residual pyridine content of less than 50 ppm. The residual iodine level can even be less than 100 ppm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Molecular Biology (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
EP99936746A 1998-08-19 1999-08-17 Verfahren zur industriellen herstellung von diosmin durch die reaktion von hesperidin mit jod und pyridin Withdrawn EP1105402A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9810544A FR2782518A1 (fr) 1998-08-19 1998-08-19 Procede de fabrication industrielle de diosmine a partir de l'hesperidine par reaction avec de l'iode et de la pyridine
FR9810544 1998-08-19
PCT/FR1999/002001 WO2000011009A2 (fr) 1998-08-19 1999-08-17 Procede de fabrication industrielle de diosmine a partir de l'hesperidine par reaction avec de l'iode et de la pyridine

Publications (1)

Publication Number Publication Date
EP1105402A1 true EP1105402A1 (de) 2001-06-13

Family

ID=9529773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99936746A Withdrawn EP1105402A1 (de) 1998-08-19 1999-08-17 Verfahren zur industriellen herstellung von diosmin durch die reaktion von hesperidin mit jod und pyridin

Country Status (3)

Country Link
EP (1) EP1105402A1 (de)
FR (1) FR2782518A1 (de)
WO (1) WO2000011009A2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010092592A2 (en) * 2009-02-11 2010-08-19 Elder Pharmaceuticals Ltd. Process for the preparation of diosmin
CN103012524B (zh) * 2012-12-31 2015-02-25 浙江大学 一种半合成制备漆叶苷的方法
CN103435666B (zh) * 2013-07-30 2016-03-16 李玉山 一种香叶木苷的生产新技术
EP3053930A1 (de) 2015-02-03 2016-08-10 Interquim, S.A. Verfahren zur Herstellung von Diosmin
AR122887A1 (es) * 2020-07-09 2022-10-12 Servier Lab Procedimiento de preparación de la diosmina
CN112979603A (zh) * 2021-03-08 2021-06-18 宜宾西华大学研究院 黄酮类化合物的连续流微通道合成工艺
AR126366A1 (es) 2021-07-06 2023-10-11 Servier Lab Procedimiento para la preparación de diosmina y de fracción flavonoica
CN114306363B (zh) * 2022-01-05 2022-11-08 成都亚中生物制药有限责任公司 一种工业化制备柑橘黄酮原料药的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2740950A1 (de) * 1977-09-10 1979-03-22 Merck Patent Gmbh Verfahren zur herstellung von flavonen
ES465156A1 (es) * 1977-12-16 1978-10-01 Merck Quimica S A Procedimiento para preparar glicosidos con un aglicon insa- turado.
IT1191620B (it) * 1985-05-30 1988-03-23 Edmond Pharma Srl Procedimento per la preparazione della diosmina

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0011009A3 *

Also Published As

Publication number Publication date
WO2000011009A3 (fr) 2000-06-29
FR2782518A1 (fr) 2000-02-25
WO2000011009A2 (fr) 2000-03-02

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