WO1995023805B1 - Process for preparing [l]- or [d]-homoalanin-4-yl-(methyl)phosphinic acid and its salts by racemic resolution - Google Patents

Process for preparing [l]- or [d]-homoalanin-4-yl-(methyl)phosphinic acid and its salts by racemic resolution

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Publication number
WO1995023805B1
WO1995023805B1 PCT/EP1995/000682 EP9500682W WO9523805B1 WO 1995023805 B1 WO1995023805 B1 WO 1995023805B1 EP 9500682 W EP9500682 W EP 9500682W WO 9523805 B1 WO9523805 B1 WO 9523805B1
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WO
WIPO (PCT)
Prior art keywords
acid
salt
salts
homoalanin
methyl
Prior art date
Application number
PCT/EP1995/000682
Other languages
German (de)
French (fr)
Other versions
WO1995023805A1 (en
Filing date
Publication date
Priority claimed from DE4407197A external-priority patent/DE4407197A1/en
Application filed filed Critical
Priority to DE59505034T priority Critical patent/DE59505034D1/en
Priority to JP52267995A priority patent/JP4303785B2/en
Priority to EP95910520A priority patent/EP0748325B1/en
Priority to MX9603873A priority patent/MX9603873A/en
Priority to AU17595/95A priority patent/AU704175B2/en
Priority to BR9506986A priority patent/BR9506986A/en
Publication of WO1995023805A1 publication Critical patent/WO1995023805A1/en
Publication of WO1995023805B1 publication Critical patent/WO1995023805B1/en
Priority to FI963422A priority patent/FI963422A/en

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Abstract

The title compounds are obtained by racemic resolution of D, L-homoalanin-4-yl-(methyl)phosphinic acid by precipitating out one of the diastereomeric salts with chiral bases such as quinine or cinchonine. The yield of desired enantiomers can be increased by transformed racemic resolution, the diastereomeric salt being precipitated when the undesired enantiomer is racemised in the presence of (hetero)aromatic aldehydes. The racemisation method is also suitable for optically active amino acids having other structures.

Claims

GEÄNDERTE ANSPRÜCHE[beim Internationalen Büro am 29. September 1995 (29.09.95) eingegangen; ursprüngliche Ansprüche 8, 9, 14 und 15 geändert; alle weiteren Ansprüche unverändert (3 Seiten)] AMENDED CLAIMS [received at the International Bureau on 29 September 1995 (29.09.95); original claims 8, 9, 14 and 15 changed; all other claims unchanged (3 pages)]
1. Verfahren zur Herstellung von [L]-Homoalanin-4-yl-(methyl)phosphinsäure (L-Säure) und deren Salzen1. Process for the preparation of [L] -Homoalanin-4-yl- (methyl) phosphinic acid (L-acid) and its salts
H 3 C - b )
Figure imgf000003_0001
oder von [D]-Homoalanin-4-yl-(methyl)phosphinsäurβ (D-Säure) und deren Salzen aus racemischer [DL]-Homoalanin-4-yl-(methyl)phosphinsäure (DL-Säure) oder deren Salzen durch Racematspaltung, dadurch gekennzeichnet, daß man a) DL-Säure oder deren Salz mit einer chiralen Base umsetzt, b) aus einer Lösung des erhaltenen Gemischs der diastereomeren Salze aus D-Säure, L-Säure und der chiralen Base in einem wäßrigen oder wäßrig¬ organischen Lösungsmittel, in welchem das Salz der D-Säure bzw. L-Säure eine höhere Löslichkeit als das Salz der L-Säure bzw. D-Säure aufweist, das Salz der L-Säure bzw. D-Säure und der chiralen Base auskristallisieren läßt (Racematspaltung) und c) im Falle, daß die freie L-Säure bzw. D-Säure hergestellt wird, das erhaltene Salz mit einer Säure neutralisiert oder, im Falle, daß ein anderes Salz als das nach b) erhaltene hergestellt wird, eine Umsalzung durchführt.
H 3 C - b )
Figure imgf000003_0001
or of [D] -homoalanin-4-yl- (methyl) phosphinic acid (D-acid) and its salts of racemic [DL] -homoalanin-4-yl- (methyl) phosphinic acid (DL-acid) or salts thereof by racemate resolution , a) characterized in that a) DL acid or its salt is reacted with a chiral base, b) from a solution of the resulting mixture of the diastereomeric salts of D acid, L acid and the chiral base in an aqueous or aqueous organic Solvent in which the salt of D-acid or L-acid has a higher solubility than the salt of L-acid or D-acid, crystallizes the salt of L-acid or D-acid and the chiral base ( Racemate resolution) and c) in the case that the free L-acid or D-acid is prepared, the resulting salt is neutralized with an acid or, in the case that a salt other than that obtained according to b) is prepared, performs a salination ,
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß man L-Säure oder deren Salze hergestellt.2. The method according to claim 1, characterized in that one produces L-acid or its salts.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß man als chirale Base Chinin verwendet.3. The method according to claim 2, characterized in that one uses quinine as the chiral base.
4. Verfahren nach Anspruch 2 oder 3. dadurch gekennzeichnet, daß man als Lösungsmittel Lösungsmittelgemische aus Wasser und organischen Lösungsmitteln aus der Gruppe der Alkohole und Ketone einsetzt. 4. The method according to claim 2 or 3, characterized in that one uses as the solvent solvent mixtures of water and organic solvents from the group of alcohols and ketones.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß man ein Lösungsmittelgemisch aus Wasser und Isopropanol oder tert.-Butanol einsetzt.5. The method according to claim 4, characterized in that one uses a solvent mixture of water and isopropanol or tert-butanol.
6. Verfahren nach einem der Ansprüche 2-5, dadurch gekennzeichnet, daß die Stufe b) bei Temperaturen von O-100°C durchgeführt wird.6. The method according to any one of claims 2-5, characterized in that the stage b) is carried out at temperatures of O-100 ° C.
7. Verfahren nach einem der Ansprüche 2-6, dadurch gekennzeichnet, daß das D-Isomer (D-Ia) oder dessen Salze racemisiert und die erhaltene racemische Verbindung (DL-Ia) für die Racematspaltung verwendet wird.7. The method according to any one of claims 2-6, characterized in that the D-isomer (D-Ia) or its salts are racemized and the resulting racemic compound (DL-Ia) is used for the resolution of racemates.
8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß man das D-Isomer (D-Ia) in Gegenwart von sechsgliedrigen (hetero)aromatlschen Aldehyden, die eine Hydroxygruppe in 2-Position zur Aldehydgruppe und elektronenziehende Reste in 3- oder 5-Position zur Aldehydgruppe aufweisen und gegebenenfalls weiter substituiert sind, in wäßrigem oder wäßrig¬ organischen Medium ohne Zusatz von organischen Säuren umsetzt.8. The method according to claim 7, characterized in that the D-isomer (D-Ia) in the presence of six-membered (hetero) aromat aldehydes containing a hydroxy group in the 2-position to the aldehyde group and electron-withdrawing radicals in the 3- or 5-position to the aldehyde group and optionally further substituted, in aqueous or aqueous organic medium without the addition of organic acids.
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß man 5-Nitrosalicylaldehyd oder 3,5-Dinitrosalicylaldehyd einsetzt.9. The method according to claim 8, characterized in that one uses 5-nitrosalicylaldehyde or 3,5-dinitrosalicylaldehyde.
10. Verfahren nach einem der Ansprüche 7-9, dadurch gekennzeichnet, daß die Racemisierung bei Temperaturen von 0- 120°C durchgeführt wird.10. The method according to any one of claims 7-9, characterized in that the racemization is carried out at temperatures of 0-120 ° C.
11. Verfahren nach einem der Ansprüche 8-10, dadurch gekennzeichnet, daß man ein Gemisch der diastereomeren Salze aus D-Säure bzw. L-Säure und der chiralen Base, gelöst in einem wäßrigen oder wäßrig-organischen Lösungsmittel, in welchem das Salz der D-Säure eine höhere Lδslichkeit als das Salz der L-Säure aufweist, bei Temperaturen von 0-85 °C in Gegenwart des Aldehyds umsetzt, wobei die Temperatur so niedrig eingestellt ist, daß zugleich das Salz der L-Säure und der chiralen Base auskristallisiert. . . 5 PCT/EP95/0068211. The method according to any one of claims 8-10, characterized in that a mixture of diastereomeric salts of D-acid or L-acid and the chiral base, dissolved in an aqueous or aqueous-organic solvent in which the salt of D acid has a higher solubility than the salt of L acid, at temperatures of 0-85 ° C in the presence of the aldehyde, the temperature being set so low that at the same time the salt of the L acid and the chiral base crystallized out , . . 5 PCT / EP95 / 00682
12. Salze von [L]- oder [D]-Homoalanin-4-yl-(methyl)phosphinsäure und chiralen Alkaloidbasen.12. Salts of [L] - or [D] -homoalanin-4-yl (methyl) phosphinic acid and chiral alkaloid bases.
13. Salz von [L]-Homoalanin-4-yl-(methyI)phosphinsäure (L-Säure) und Chinin.13. Salt of [L] -homoalanin-4-yl (methyl) phosphinic acid (L-acid) and quinine.
14. Verfahren zur Racemisierung von optisch aktiven freien alpha-Aminosäuren und deren Salzen, dadurch gekennzeichnet, daß man die optisch aktiven Aminosäuren in Gegenwart von sechsgliedrigen (hetero)aromatischen Aldehyden, die eine Hydroxygruppe in 2-Positioπ zur Aldehydgruppe und elektronenziehende Reste in 3- oder 5-Position zur Aldehydgruppe aufweisen und gegebenenfalls weiter substituiert sind, in wäßrigem oder wäßrig- organischen Medium ohne Metallionen-Katalyse und ohne Zusatz von organischen Säuren umsetzt.14. A process for the racemization of optically active free alpha-amino acids and their salts, which comprises reacting the optically active amino acids in the presence of six-membered (hetero) aromatic aldehydes containing a hydroxy group in 2-position to the aldehyde group and electron-withdrawing radicals in 3 or 5-position to the aldehyde group and optionally further substituted, in aqueous or aqueous organic medium without metal ion catalysis and without addition of organic acids.
15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß man 5-Niτrosalicylaldehyd oder 3,5-Dinitrosalicylaldehyd einsetzt.15. The method according to claim 14, characterized in that one uses 5-Niτrosalicylaldehyd or 3,5-dinitrosalicylaldehyde.
16. Verfahren nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß man die Racemisierung bei pH 4-9 und bei Temperaturen von 0-120° C durchführt.16. The method according to claim 14 or 15, characterized in that one carries out the racemization at pH 4-9 and at temperatures of 0-120 ° C.
17. Verfahren nach einem der Ansprüche 14-16, dadurch gekennzeichnet, daß man optisch aktive Aminosäuren aus der Gruppe [D]- oder [Ll-Alanin, [D]- oder [L]-Phenylglycin, [DJ- oder [L]-HydroxypheπylgJycin, [D]- oder [L]-Leuclne, [Di¬ oder [Ll-Homoalanin-4-yl-(methyl)phosphinsäure, [Dl- oder [Ll-Homoalanin-4-γl- (methyl)phosphinsäure-ammoniumsalz und [Dl- oder [Ll-Homoalanin-4-yl- (methyDphosphinsäure/Chininsalz einsetzt. 17. The method according to any one of claims 14-16, characterized in that optically active amino acids from the group [D] - or [Ll-alanine, [D] - or [L] -phenylglycine, [DJ- or [L] Hydroxyphenylgycin, [D] or [L] -Leuclne, [di- or [LI-homoalanin-4-yl (methyl) phosphinic acid, [Dl- or [ll-homoalanine-4-yl- (methyl) -phosphinic acid] ammonium salt and [Dl or [Ll-homoalanin-4-yl (methylphosphine / quinine salt.
PCT/EP1995/000682 1994-03-04 1995-02-24 Process for preparing [l]- or [d]-homoalanin-4-yl-(methyl)phosphinic acid and its salts by racemic resolution WO1995023805A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE59505034T DE59505034D1 (en) 1994-03-04 1995-02-24 METHOD FOR THE PRODUCTION OF [L] - OR [D] -HOMOALANIN-4-YL- (METHYL) PHOSPHINIC ACID AND THE SALTS THEREOF BY RACEMATE CLEARANCE
JP52267995A JP4303785B2 (en) 1994-03-04 1995-02-24 Process for producing [L]-or [D] -homoalanin-4-yl- (methyl) phosphinic acid and salts thereof by racemate resolution
EP95910520A EP0748325B1 (en) 1994-03-04 1995-02-24 Process for preparing [l]- or [d]-homoalanin-4-yl-(methyl)phosphinic acid and its salts by racemic resolution
MX9603873A MX9603873A (en) 1994-03-04 1995-02-24 Process for preparing [l]- or [d]-homoalanin-4-yl-(methyl)phosphinic acid and its salts by racemic resolution.
AU17595/95A AU704175B2 (en) 1994-03-04 1995-02-24 Process for preparing {l}- or {d}-homoalanin-4-yl- (methyl)phosphinic acid and salts thereof by racemate resolution
BR9506986A BR9506986A (en) 1994-03-04 1995-02-24 Process for the preparation of (l) - or (d) - homoalanin-4-yl- (methyl) phosphinic acid and its salts by means of racemate separation
FI963422A FI963422A (en) 1994-03-04 1996-09-02 Process for the preparation of (L) - or (D) -homoalanin-4-yl (methyl) phosphinic acid and its salts by racemate cleavage

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Application Number Priority Date Filing Date Title
DEP4407197.3 1994-03-04
DE4407197A DE4407197A1 (en) 1994-03-04 1994-03-04 Process for the preparation of / L / -Homoalanin-4-yl- (methyl) phosphinic acid and its salts by resolution

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WO1995023805A1 WO1995023805A1 (en) 1995-09-08
WO1995023805B1 true WO1995023805B1 (en) 1995-10-26

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