EP1919888A2 - Procede de production de nebivolol - Google Patents

Procede de production de nebivolol

Info

Publication number
EP1919888A2
EP1919888A2 EP06760790A EP06760790A EP1919888A2 EP 1919888 A2 EP1919888 A2 EP 1919888A2 EP 06760790 A EP06760790 A EP 06760790A EP 06760790 A EP06760790 A EP 06760790A EP 1919888 A2 EP1919888 A2 EP 1919888A2
Authority
EP
European Patent Office
Prior art keywords
formula
general formula
diastereomer
nebivolol
reduced
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Withdrawn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
EP06760790A
Other languages
German (de)
English (en)
Inventor
Christian Noe
Muhamed Jasic
Hermann Kollmann
Bodo Lachmann
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.)
Pharmacon Forschung und Beratung GmbH
Original Assignee
Pharmacon Forschung und Beratung GmbH
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 Pharmacon Forschung und Beratung GmbH filed Critical Pharmacon Forschung und Beratung GmbH
Publication of EP1919888A2 publication Critical patent/EP1919888A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D407/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00
    • C07D407/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings
    • C07D407/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings linked by a chain containing hetero atoms as chain links

Definitions

  • the invention relates to a process for the preparation of the racemic drug
  • Nebivolol as the free base or as a pharmaceutically acceptable salt, preferably as
  • R * R * R * S * which is a 1: 1 mixture of the enantiomers of the absolute configurations RRRS and SSSR, is the actual approved active ingredient.
  • R * R * R * S * is the actual approved active ingredient.
  • the present invention is a process for the preparation of nebivolol, wherein as intermediates racemic diastereomeric cyanohydrins - in the following diastereomers A and B - of the general formula. 2
  • a cyanohydrins typical protecting group for example a benzylic (eg benzyl or 4-methoxybenzyl) or acetalic protective group (eg Tetrahydropyranly, or MEM), preferably a silyl protecting group, most particularly preferred a tert-butyldimethylsilyl protecting group.
  • the invention further relates to ⁇ - [(tert-butyldimethylsilyl) oxy] -6-fluoro-3,4-dihydro-2H-2- [1] benzopyranacetonitrile as a crystalline racemic diastereomer A.
  • the invention also relates.
  • the cyanohydrins can be prepared from the aldehyde 3
  • the aldehyde 3 can be obtained, inter alia, also by way of the ester 4 by reduction of the pyran ring, followed by direct or indirect (that is, by way of the alcohol) reduction of the ester group to the aldehyde.
  • the cyanohydrin reaction can be carried out stereoselectively or non-stereoselectively, with the preferred variant being non-stereoselective synthesis with O derivatization.
  • Diastereomers of the compound of the formula 2 which bear silyl protective groups can also be prepared from the aldehyde 3 in one step with the aid of a corresponding silyl cyanide (preferably tert-butyldimethylsilyl cyanide). Further synthesis of the components prior to coupling is initiated with the separation of the diastereomeric cyanohydrins 2 with configuration A and B, both of which are needed for further synthesis.
  • Particularly preferred according to the invention are derivatized diastereomers A and B, which have distinctly different crystallization properties, preferably those in which 1 diasteromer is in crystalline form and the other is oily.
  • Very particularly preferred according to the invention is the tert. Butyldimethylsilyl.
  • One of the two diastereomers (A) crystallizes particularly well, while the other diastereomer (B) is obtained as an oil, from which when using an apolar solvent, preferably a lower alkane, especially hexane, even small amounts of A slightly under cooling by crystallization let disconnect.
  • the crystalline diastereomer can be made to high purity by recrystallization from an apolar solvent, preferably a lower alkane, especially hexane.
  • Preferred reactions for further reaction are: the reduction to the O-protected aldehyde of the general formula 5, wherein X has the meaning given for the formula 2, as well as the reduction to the O-protected or O-unprotected aminoalcohol of the general formula 6, wherein X has the meaning given for the formula 2, and the Pinner saponification to the O-unprotected hydroxyester of general formula 7 wherein R is branched or unbranched lower alkyl, or substituted or unsubstituted benzyl.
  • Both the crystalline cyanohydrin A of the formula 2 and the oily cyanohydrin B of the formula 2 can be reduced once to the aldehyde 5 or to the hydroxy ester 7 and the other time to the amine 6. This results in differences in the yields in the preparation and implementation of the subsequent reaction sequences.
  • the linkage and reaction to nebivolol is preferably accomplished by reacting an aldehyde with an amine in a reductive amination, via Schiff's base formation followed by reduction, preferably in a one-pot reaction using a complex hydride with limited reducing power, such as sodium cyanoborohydride or sodium triacetoxyborohydride the general formula 8,
  • Nebivolol is obtained from the compounds of formulas 8 and 10, optionally after prior purification, by deprotection and optionally purified by recrystallization of the hydrochloride and / or the free base to nebivolol base or a pharmaceutically acceptable salt thereof in pharmaceutical grade.
  • O-protected or O-unprotected derivatives in the coupling opens the possibility, after coupling by purification of the monoprotected nebivolol of the formula 10 optionally in small To remove amounts of by-product diastereomers particularly efficiently.
  • Variant 1 31.5 g of t-butyldimethylsilyl chloride are added to a solution of 25 g of imidazole in 150 ml of anhydrous dimethylformamide at 0 ° C., and the mixture is stirred at 0 ° C. for 15 minutes. Subsequently, a solution of 36 g of cyanohydrin (Example 1) in 150 ml of anhydrous dimethylformamide is added dropwise. After the addition is complete, the mixture is stirred for 15 minutes at 0 0 C, then brought to room temperature and stirred for 2 h. Subsequently, the reaction mixture is between sat.
  • 16 g of the racemic diastereomer mixture from Example 2 are dissolved in 20 times the amount of petroleum ether, brought to -45 ° C and inoculated with ⁇ a seed crystal of the crystalline diastereomeric component. After 4 hours, the mother liquor is decanted off, the crystals are digested with a little petroleum ether, cooled down, and the decanted off and the combined mother liquors are concentrated to one third of the volume of the original solution, re-inoculated and the procedure described repeated, whereby a second crop of product is obtained.
  • a solution of 8 g of the oily racemic diastereomeric cyanohydrin B from Example 4 in 80 ml of toluene is brought at 5 ° C with 18.25 ml of a 1, 5M solution of diisobutylaluminum hydride in toluene.
  • the reaction mixture is stirred for 1 h at room temperature. Subsequently, the reaction mixture is added to 600 ml of 1N hydrochloric acid and diluted with 100 ml of MTBE.
  • the phases are separated, the aqueous phase extracted three times with 200 ml MTBE.
  • the combined organic phases are washed with saturated sodium chloride solution, dried over Na 2 SO 4 and the solvent removed in vacuo.
  • Example 7 N- ⁇ 2 - [(tert -butyldimethylsilyl) oxy] -2- (6-fluoro-3,4-dihydro-2H-2- [1] benzopyranyl) ethyl ⁇ -6-fluoro-3,4- dihydro- ⁇ -hydroxy-2H-2- [1] benzopyran-ethanamine racemic A / B diastereomer
  • the aqueous phase is basified with 2N NaOH and extracted several times with ethyl acetate.
  • the combined organic phases are washed with water, dried and the solvent removed in vacuo. Yield: 3.2 g (97%), yellow oil.
  • the oil is taken up in 30 ml of methanol, treated with 6 ml of 2N HCl in diethyl ether and allowed to crystallize at -20 0 C for crystallization. Traces of diastereomeric impurities can be separated by recrystallization from methanol.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pyrane Compounds (AREA)

Abstract

L'invention concerne un procédé permettant de produire le principe actif racémique Nébivolol, selon lequel des cyanhydrines diastéréomères sont produites, séparées et les diastéréomères séparés sont à nouveau accouplés, après une transformation, de préférence une réduction partielle ou complète du groupe cyano ou une saponification de Pinner.
EP06760790A 2005-07-19 2006-07-17 Procede de production de nebivolol Withdrawn EP1919888A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0121405A AT502220A1 (de) 2005-07-19 2005-07-19 Verfahren zur herstellung von nebivolol
PCT/AT2006/000303 WO2007009143A2 (fr) 2005-07-19 2006-07-17 Procede de production de nebivolol

Publications (1)

Publication Number Publication Date
EP1919888A2 true EP1919888A2 (fr) 2008-05-14

Family

ID=37450808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06760790A Withdrawn EP1919888A2 (fr) 2005-07-19 2006-07-17 Procede de production de nebivolol

Country Status (15)

Country Link
US (1) US20080221340A1 (fr)
EP (1) EP1919888A2 (fr)
JP (1) JP2009502750A (fr)
KR (1) KR20080027368A (fr)
CN (1) CN101243062A (fr)
AT (1) AT502220A1 (fr)
AU (1) AU2006272420A1 (fr)
BR (1) BRPI0613610A2 (fr)
CA (1) CA2615832A1 (fr)
EA (1) EA200800364A1 (fr)
IL (1) IL188777A0 (fr)
MX (1) MX2008000747A (fr)
NO (1) NO20080823L (fr)
WO (1) WO2007009143A2 (fr)
ZA (1) ZA200800963B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010005953A1 (de) 2010-01-27 2011-07-28 Corden PharmaChem GmbH, 68305 Verfahren zur Herstellung von Nebivolol

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2163551B1 (fr) 2008-09-08 2011-11-16 Cadila Pharmaceuticals Ltd. Procédé amélioré pour la préparation d'hydrochlorure de nebivolol
IT1395354B1 (it) * 2009-07-23 2012-09-14 Zach System Spa Processo di preparazione di nebivololo
IT1397962B1 (it) * 2010-02-11 2013-02-04 Menarini Int Operations Lu Sa Processo per la preparazione del nebivololo.
CN102190647A (zh) * 2010-03-12 2011-09-21 浙江海翔药业股份有限公司 一种奈比洛尔的中间体的制备方法
JP6847095B2 (ja) 2015-05-19 2021-03-24 チョーチアン オウスン ファーマシューティカル カンパニー リミテッド ネビボロールの合成方法及びその中間化合物

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1337429C (fr) * 1983-12-05 1995-10-24 Guy Rosalia Eugene Van Lommen Derives du 2,2'-imino-bis-ethanol
CN100546987C (zh) * 2005-03-03 2009-10-07 浙江医药股份有限公司新昌制药厂 Dl-奈必洛尔及其盐酸盐的制备方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007009143A2 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010005953A1 (de) 2010-01-27 2011-07-28 Corden PharmaChem GmbH, 68305 Verfahren zur Herstellung von Nebivolol
WO2011091968A1 (fr) 2010-01-27 2011-08-04 Corden Pharmachem Gmbh Procédé de production de nébivolol

Also Published As

Publication number Publication date
MX2008000747A (es) 2008-04-14
BRPI0613610A2 (pt) 2011-01-18
ZA200800963B (en) 2009-08-26
CN101243062A (zh) 2008-08-13
EA200800364A1 (ru) 2008-06-30
AT502220A1 (de) 2007-02-15
NO20080823L (no) 2008-04-02
WO2007009143A3 (fr) 2007-04-05
IL188777A0 (en) 2008-08-07
AU2006272420A1 (en) 2007-01-25
CA2615832A1 (fr) 2007-01-25
JP2009502750A (ja) 2009-01-29
KR20080027368A (ko) 2008-03-26
US20080221340A1 (en) 2008-09-11
WO2007009143A2 (fr) 2007-01-25

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Inventor name: LACHMANN, BODO

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