WO2003068727A1 - PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE β-PHENYLALANINE DERIVATIVES - Google Patents
PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE β-PHENYLALANINE DERIVATIVES Download PDFInfo
- Publication number
- WO2003068727A1 WO2003068727A1 PCT/JP2003/001363 JP0301363W WO03068727A1 WO 2003068727 A1 WO2003068727 A1 WO 2003068727A1 JP 0301363 W JP0301363 W JP 0301363W WO 03068727 A1 WO03068727 A1 WO 03068727A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- optically active
- general formula
- formula
- hydrogen atom
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C215/00—Compounds containing amino and hydroxy groups bound to the same carbon skeleton
- C07C215/02—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton
- C07C215/22—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being unsaturated
- C07C215/28—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being unsaturated and containing six-membered aromatic rings
- C07C215/30—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being unsaturated and containing six-membered aromatic rings containing hydroxy groups and carbon atoms of six-membered aromatic rings bound to the same carbon atom of the carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C211/00—Compounds containing amino groups bound to a carbon skeleton
- C07C211/01—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to acyclic carbon atoms
- C07C211/26—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to acyclic carbon atoms of an unsaturated carbon skeleton containing at least one six-membered aromatic ring
- C07C211/27—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to acyclic carbon atoms of an unsaturated carbon skeleton containing at least one six-membered aromatic ring having amino groups linked to the six-membered aromatic ring by saturated carbon chains
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/16—Preparation of optical isomers
- C07C231/20—Preparation of optical isomers by separation of optical isomers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
- C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C233/45—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups
- C07C233/46—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
- C07C233/47—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom having the carbon atom of the carboxamide group bound to a hydrogen atom or to a carbon atom of an acyclic saturated carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/07—Optical isomers
Definitions
- the present invention relates to a method for producing an optically active N-acyl-/-fluorophenylalanine derivative, and more particularly to a method for producing an optically active phenylalanine derivative, and further relates to a diastereomer of an N-acyl-15-phenylalanine derivative.
- salt a method for producing an optically active N-acyl-/-fluorophenylalanine derivative, and more particularly to a method for producing an optically active phenylalanine derivative, and further relates to a diastereomer of an N-acyl-15-phenylalanine derivative.
- a ⁇ -phenylalanine derivative refers to ⁇ -phenylalanine having a substituent on its phenyl group (in a narrow sense, /?-Phenylalanine derivative), but it may be misleading in context. If not, in a strict sense; 5-phenyl-2-alanine derivative and? -Phenylalanine may be combined and simply referred to as? -Phenylalanine derivative. (Background technology)
- the optically active /?-Phenylalanine derivative is known to be a raw material for receptor antagonists and enzyme inhibitors, and is a useful compound as an intermediate compound for pharmaceuticals such as antithrombotic drugs.
- a method for producing an optically active ⁇ -phenylalanine derivative a method of enzymatically resolving a racemic 5-phenylalanine derivative (for example, a method using benicillin acylase, J. Org. Chem. , 1998, 63, 2351), and a method for production by asymmetric synthesis (for example, as a method using an asymmetric aldole reaction, J. Am. Chem. Soc, 1994, 116, 10520) and the like.
- an object of the present invention is to provide an industrially advantageous optically active N-azi ⁇ -phenylalanine derivative and an optically active ⁇ -phenylalanine derivative, which are useful as intermediate compounds for pharmaceuticals and the like. To provide a simple manufacturing method.
- the present inventors have conducted intensive studies to achieve the above-mentioned object, and have found that a ⁇ -acyl-1-phenylalanine derivative in which an amino group of a ⁇ -phenylalanine derivative is acylated is converted into a specific optically active compound (optical Resolving agent) and diastereomer salts, from which one diastereomer salt is selectively separated first, then the other diastereomer salt is separated, and the separated salts are metathesized to obtain optical purity. It has been found that a high V ⁇ optically active ⁇ -phenyl-1-alanine derivative can be obtained, and by further deacylation of this, an optically active 5- 5phenylalanine derivative with high optical purity can be obtained. Were found to be obtained, and the present invention was completed based on such findings. That is, the present invention includes the following contents.
- Ri represents a hydrogen atom, a halogen atom, a nitro group, an alkyl group or an alkoxyl group
- R 2 represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group.
- R 3 and R 4 each independently represent a hydrogen atom, a halogen atom, a nitro group, an alkyl group or an alkoxyl group, and * indicates that the carbon atom to which this is attached is an asymmetric carbon atom. Represents ], Or
- N-acyl- ⁇ -phenylalanine derivative represented by the following formula
- the derivative is represented by the following general formula (2):
- R 3 and R 4 each independently represent a hydrogen atom, a halogen atom, a nitro group, an alkyl group or an alkoxyl group, and * indicates that the carbon atom to which this is attached is an asymmetric carbon atom. Represents ], Or
- Ri represents a hydrogen atom, a halogen atom, a nitro group, an alkyl group or an alkoxy group
- R 2 represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group
- R 3 and R 4 represent Each independently represents a hydrogen atom, a halogen atom, a nitro group, an alkyl group or an alkoxyl group
- * indicates that the carbon atom attached thereto is an asymmetric carbon atom.
- R 2 represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group
- R 3 and R 4 each independently represent Represents a hydrogen atom, a halogen atom, a nitro group, an alkyl group, or an alkoxyl group
- * indicates that the carbon atom to which this is attached is an asymmetric carbon atom.
- optical division 1363 The operation of separating a racemate into its individual enantiomers, ie, optically active forms, is called optical resolution.
- optical resolution the direct method of directly resolving the racemate into the optically active form, and the reaction of the racemic form with an optically active reagent (optical resolution agent) to lead to the diastereomer, and the physical (such as solubility) between the diastereomers
- optical resolution agent optical resolution agent
- Typical examples of the direct method include a preferential crystallization method in which a crystal of an optically active substance, that is, a seed of a crystal is added to a saturated solution of a racemate to promote crystallization to obtain an optically active substance, and a column using an optically active stationary phase. Chromatography.
- a method for obtaining diastereomers when the racemate is an acid, for example, an optically active base, for example, an alkaloid such as quinine or brucine, is formed into a diastereomer—a salt thereof, which is purified by a recrystallization method to obtain one of the diastereomers.
- a typical method is to obtain an optically active substance by decomposing this salt with an acid or an alkaline solution. ”(Tokyo Kagaku Dojin, published in 1994,“ Chemicals Dictionary, p. 458 p.).
- the method for producing an optically active N-acyl-y5-phenylalanine derivative of the present invention is a method using an optical resolving agent among the optical resolution methods described above (abbreviated as a diastereomer method). To use). It should be noted that an important point in the development of the diastereomer method is the development of an appropriate optical resolving agent, and that the other operating conditions themselves can be appropriately followed by a conventional method.
- the / phenylenealanine derivative represented by the general formula (5) (and the optically active substance represented by the general formula (6)), is a hydrogen atom, a halogen atom, Represents a nitro group, an alkyl group or an alkoxyl group.
- the halogen atom include a chlorine atom, a bromine atom, a fluorine atom, an iodine atom and the like.
- the alkyl group include an alkyl group having 1 to 6 carbon atoms such as a methyl group, an ethyl group, a propyl group, and a butyl group.
- Alkoxyl group and Examples thereof include an alkoxyl group having 1 to 6 carbon atoms such as a methoxyl group and an ethoxyl group. These alkyl group and alkoxyl group may have a substituent such as a halogen atom.
- the /?-Phenylalanine derivative particularly preferably used as a starting material in the production method of the present invention is /?-Phenylalanine, which is a hydrogen atom (ie, 3-amino-3-phenylpropanoic acid).
- the N-acyl-5-phenylalanine derivative represented by the general formula (1) (and the optically active substance represented by the general formula (4)) is the same as described above. is there.
- R 2 represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group.
- alkyl group a methyl group at R 2 can be exemplified Echiru group, an alkyl group having a carbon number 1 to 6, such as flop port propyl group, is a ⁇ Li Ichiru group phenyl group, a naphthyl group
- An aralkyl group having 6 to 10 carbon atoms can be mentioned, and an aralkyl group having 7 to 11 carbon atoms such as a benzyl group can be mentioned.
- These groups may have a substituent such as a nitrogen atom.
- the N-acyl-/-phenylalanine derivative preferably used as a starting material in the production method of the present invention is a N-acetyl-/-phenylalanine derivative in which is a hydrogen atom and R 2 is a methyl group (ie, 3 -Acetylamino-3-phenylpropanoic acid), and N-formylue 3-phenylalanine, in which R 2 is a hydrogen atom (ie, 3-formylamino-13-phenylpropanoic acid), which is particularly preferably used.
- R 3 and R 4 each independently represent a hydrogen atom, a halogen atom, a nitro group, an alkyl group or Represents an alkoxyl group.
- the halogen atom include a chlorine atom, a bromine atom, a fluorine atom, and an iodine atom.
- the alkyl group include an alkyl group having 1 to 6 carbon atoms such as a methyl group, an ethyl group, a propyl group, and a butyl group.
- alkoxyl group examples include an alkoxyl group having 1 to 6 carbon atoms such as a methoxyl group and an ethoxyl group. This These alkyl groups and alkoxyl groups may have a substituent such as a halogen atom.
- Optically active compound represented by the general formula are particularly preferred for the formation of Jiasutereoma salt in the present invention (2) or (3) (optical resolution agent), 11 3 and 11 4 is a both a hydrogen atom 2- amino- 1,2-diphenylethanol and 2- (4-methylphenyl) 1-1-phenylethylamine.
- 2- (4-methylphenyl) 111-phenylethylamine is preferably used for N-formyl-1-phenylalanine, and 2-amino-1,2- for N-acetyl-1- / 5-phenylalanine.
- Diphenylethanol is preferably used.
- optically active compound (optically resolving agent) represented by the above general formula (2) or (3) is such that the desired optically active N-acyl-/?-Phenylalanine derivative ⁇ is an optically active compound. It may be appropriately selected depending on the configuration of the phenylalanine derivative.
- (+)-3-acetylamino-3-phenylpropanoic acid is (1R, 2S)-(-1) -2-amino-1,2-diphenylethanol.
- (1-)-1-acetylamino-3-phenylpropanoic acid can be obtained by using (1S, 2R) -1-(+) — 2-amino-1,2-diphenylethanol. Obtainable.
- (+) — 3-formylamino-3-phenylpropanoic acid can be obtained using (S) — (+) — 2- (4-methylphenyl) -11-phenylethylamine
- 13-Formylamino-3-phenylpropanoic acid can be obtained by using (R)-(1-) 1-2- (4-methylphenyl) -11-phenylethylamine.
- a plurality of substituents R 3 and R 4 on the phenyl group may be present in each phenyl group. In that case, each substituent may be the same or different.
- the above-mentioned general formula (2) or (3) which is used for forming the N-acyl-/-phenylphenylalanine derivative ⁇ ⁇ diastereomer salt represented by the general formula (1) used as a starting material in the production method of the present invention Optically active compound represented by Salts and the like may be used in the form of a salt as long as the effects of the present invention are achieved.
- the optically active N-acyl 1 ⁇ -phenylalanine derivative represented by the general formula (4) and the optically active 5-phenylalanine derivative represented by the general formula (6), which are the target substances are diastereomers. After the double decomposition treatment of the monosalt, the salt may be converted into another suitable salt form as desired from the decomposition treatment solution and separated and obtained. That is, these embodiments are also included in the scope of the present invention.
- the N-hydroxy-5-phenylalanine derivative represented by the general formula (1) is reacted with an optically-optical compound (optical resolution agent) represented by the general formula (2) or (3) to form a diastereomer monosalt. To do so, they may be dissolved in an appropriate solvent and reacted. Also, the N-acylu-/?-Phenylalanine derivative does not necessarily have to be in a racemic form, and a derivative in which the content of one of the optically active substances is higher than that of the other optically active substance (enantiomer) may be contained.
- the method of the present invention can be applied for obtaining one optically active substance.
- the amount of the optically active compound (optically resolving agent) represented by the general formula (2) or (3) is usually used in the amount of the N-acyl-/?-Phenylalanine derivative represented by the general formula (1). 0.2 to 3 mol, preferably 0.5 to 1.5 mol, per 1 mol
- the solvent to be used is an N-acyl 1 / 5-phenylalanine derivative represented by the general formula (1), and an optically active compound represented by the general formula (2) or (3) (an optical splitting agent). ) Is not particularly limited as long as can be dissolved.
- Preferred solvents include Methanol, ethanol, isopropanol, acetone, methyl ethyl ketone, ethyl acetate and the like can be mentioned, but methanol is particularly preferable.
- the amount of the solvent to be used is not particularly limited, but is usually in the range of 1 to 50 times by weight based on the N-acyl-/-phenyl-2-alanine derivative represented by the general formula (1).
- the two types of diastereomer monosalts are selectively separated into one diastereomer salt by optical resolution.
- Optical resolution can be performed by performing crystallization in an appropriate solvent.
- Preferred solvents for crystallization include methanol, ethanol, isopropanol, acetone, methyl ethyl ketone, and ethyl acetate, with ethanol being particularly preferred.
- the amount of the solvent to be used is not particularly limited, but is usually in the range of 1 to 50 times by weight with respect to the N-acyl- ⁇ -phenylalanine derivative represented by the general formula (1).
- the same solvent as that used for forming the salt may be used for crystallization, and salt formation and crystallization may be performed continuously. After the salt is formed, the solvent may be distilled off, and crystallization may be performed using another solvent.
- the obtained crystals of the direomer monosalt can be further purified by dissolving in an appropriate solvent and recrystallizing.
- the crystals of the obtained diastereomer salt are subjected to a metathesis treatment by a known method such as a metathesis treatment with an acid or a base, or a decomposition treatment with an ion exchange resin (this is also one type of metathesis treatment).
- a metathesis treatment by a known method such as a metathesis treatment with an acid or a base, or a decomposition treatment with an ion exchange resin (this is also one type of metathesis treatment).
- An optically active N-acetyl-phenylalanine derivative represented by the general formula (4) can be obtained.
- the diastereomer salt is dissolved in a basic aqueous solution, and the basic aqueous layer is extracted with an organic solvent (this transfers the optical resolving agent to the organic solvent layer). May be added to make it acidic. After the resulting acidic aqueous layer is extracted with an organic solvent, the organic solvent is distilled off from the extract under reduced pressure to obtain the desired optically active N-acyl-/-1-phenylalanine derivative.
- the base used herein include sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, sodium hydrogencarbonate, hydrogencarbonate lime, and the like.
- Sodium hydroxide and hydroxylated Potassium is particularly preferably used.
- As the acid hydrochloric acid, sulfuric acid and the like are preferably used.
- Examples of the organic solvent used for the extraction include organic solvents such as getyl ether, tetrahydrofuran, ethyl acetate, n-hexane, n-heptane, cyclohexane, toluene, xylene, dichloromethane, and dichloroethane. be able to.
- the amount of the base or acid used is usually in the range of 1 to 200 mol per mol of the diastereomer salt subjected to the metathesis treatment, and the amount of the organic solvent used is usually the weight based on the diastereomer salt subjected to the metathesis treatment.
- the ratio is in the range of 1 to 200 times.
- optically active N-acyl-/-phenylphenylanine derivative thus obtained can be further purified by recrystallization using a suitable solvent such as ethanol if necessary.
- optically active compound represented by the general formula (2) or (3) can be recovered from the mother liquor or the like after the double decomposition treatment and reused.
- the mother liquor (filtrate) formed in the step of forming diastereomer salts and separating one diastereomer salt from the two diastereomeric salts formed as crystals contains the other enantiomer diastereomer salt. Therefore, the solvent is distilled off under reduced pressure, and the obtained residue is subjected to the same metathesis step as described above, whereby the enantiomer of the optically active N-acyl- ⁇ -phenylalanine derivative obtained above is obtained. You can also get it.
- the enantiomer obtained is preferably purified by recrystallization using a suitable solvent such as ethanol in order to increase the optical purity as necessary.
- optically active N-acyl- ⁇ -phenylalanine derivative represented by the general formula (4) is subjected to a deacylation reaction known to those skilled in the art, such as deacylation with an acid. It can be an optically active / monophenylalanine derivative represented by the formula (6).
- the measurement of the optical purity of the obtained substance is based on the optical activity Performed by high performance liquid chromatography using a column.
- Example 4 Enantiomeric Optical Activity N-Acetyl- ⁇ -phenyilalanine> Implementation
- the filtrates obtained in Example 2 were combined and concentrated under reduced pressure.
- (1) of 1-3-acetylamino-3-phenylpropanoic acid and (1R, 2S)-(1) of 1-erythro-2-amino-1,2-diphenylethanol 834mg of residue containing diastereomer monosalt Was. This was subjected to metathesis treatment in the same manner as in Example 3 to obtain 326 mg (optical purity: 59.5%) of crude (1) -3-acetylamino-3-phenylpropanoic acid.
- Example 8 Obtaining optically active N-formyl-1-/?-Phenylalanine by metathesis of diastereomer>
- the diastereomer salt obtained in Example 7 was metathesized using a 1 M aqueous sodium hydroxide solution, and then a basic organic substance was extracted from the metathesized solution with ether. Then, the aqueous layer after the ether extraction treatment was made acidic with 1 M hydrochloric acid by adding hydrochloric acid. Then, the organic matter was extracted with ethyl acetate, and the extract was dried by adding anhydrous sodium sulfate.
- an optically active N-acyl- ⁇ -phenylalanine derivative can be efficiently obtained, and thus an optically active / 5-phenylalanine derivative can be efficiently obtained.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03703284A EP1484314A4 (en) | 2002-02-15 | 2003-02-10 | METHOD FOR PRODUCING OPTICALLY ACTIVE BETA PHENYL ALANINE DERIVATIVES |
AU2003207195A AU2003207195A1 (en) | 2002-02-15 | 2003-02-10 | PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE Beta-PHENYLALANINE DERIVATIVES |
US10/914,238 US7385080B2 (en) | 2002-02-15 | 2004-08-10 | Method for producing optically active β-phenylalanine compounds |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-038757 | 2002-02-15 | ||
JP2002038757A JP4126921B2 (ja) | 2002-02-15 | 2002-02-15 | 光学活性なβ−フェニルアラニン誘導体の製造方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/914,238 Continuation US7385080B2 (en) | 2002-02-15 | 2004-08-10 | Method for producing optically active β-phenylalanine compounds |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003068727A1 true WO2003068727A1 (en) | 2003-08-21 |
Family
ID=27678199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/001363 WO2003068727A1 (en) | 2002-02-15 | 2003-02-10 | PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE β-PHENYLALANINE DERIVATIVES |
Country Status (5)
Country | Link |
---|---|
US (1) | US7385080B2 (ja) |
EP (1) | EP1484314A4 (ja) |
JP (1) | JP4126921B2 (ja) |
AU (1) | AU2003207195A1 (ja) |
WO (1) | WO2003068727A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5122871B2 (ja) * | 2007-06-01 | 2013-01-16 | 大東化学株式会社 | 光学活性n−ベンジルオキシカルボニルアミノ酸の製造方法およびジアステレオマー塩 |
CN101633625B (zh) * | 2008-07-23 | 2013-02-13 | 江苏恒瑞医药股份有限公司 | R-β-氨基苯丁酸衍生物的制备方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62123156A (ja) * | 1985-11-22 | 1987-06-04 | Kazuhiko Saigo | 光学活性エリトロ―2―アミノ―1,2―ジフェニルエタノールの製造方法および製造の中間体 |
EP1013769A1 (en) * | 1998-12-22 | 2000-06-28 | Dsm N.V. | Process for the enzymatic preparation of amino acid derivatives with enhanced optical purity |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5521737B2 (ja) * | 1972-12-23 | 1980-06-12 | ||
US4151198A (en) * | 1978-06-02 | 1979-04-24 | American Cyanamid Company | Resolution of N-acyl-DL (+)-phenylalanines |
WO1985003932A1 (en) * | 1984-03-01 | 1985-09-12 | Alkaloida Vegyészeti Gyár | Novel diastereomer salts of phenylalanine and n-acyl derivatives thereof and process for the separation of optically active phenylalanine and n-acyl derivatives thereof |
HU190534B (en) | 1984-04-11 | 1986-09-29 | Egal Vegyipari Koezoes Vallalat,Hu | Improved process for preparing l-beta-phenyl-alanine and acid addition salts tereof |
JPS62114945A (ja) * | 1985-11-15 | 1987-05-26 | Toray Ind Inc | N−置換−dl−フエニルアラニンの光学分割方法 |
US5191112A (en) * | 1989-10-17 | 1993-03-02 | Nissan Chemical Industries, Ltd. | Process for optical resolution of (±)-2-(3-benzoyl)-phenylpropionic acid |
JP3888402B2 (ja) * | 1997-07-30 | 2007-03-07 | 味の素株式会社 | 光学活性N−カルボベンゾキシ−tert−ロイシンの製造法 |
-
2002
- 2002-02-15 JP JP2002038757A patent/JP4126921B2/ja not_active Expired - Fee Related
-
2003
- 2003-02-10 AU AU2003207195A patent/AU2003207195A1/en not_active Abandoned
- 2003-02-10 WO PCT/JP2003/001363 patent/WO2003068727A1/ja active Application Filing
- 2003-02-10 EP EP03703284A patent/EP1484314A4/en not_active Withdrawn
-
2004
- 2004-08-10 US US10/914,238 patent/US7385080B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62123156A (ja) * | 1985-11-22 | 1987-06-04 | Kazuhiko Saigo | 光学活性エリトロ―2―アミノ―1,2―ジフェニルエタノールの製造方法および製造の中間体 |
EP1013769A1 (en) * | 1998-12-22 | 2000-06-28 | Dsm N.V. | Process for the enzymatic preparation of amino acid derivatives with enhanced optical purity |
Non-Patent Citations (1)
Title |
---|
See also references of EP1484314A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP4126921B2 (ja) | 2008-07-30 |
EP1484314A1 (en) | 2004-12-08 |
AU2003207195A1 (en) | 2003-09-04 |
US7385080B2 (en) | 2008-06-10 |
US20050065366A1 (en) | 2005-03-24 |
EP1484314A4 (en) | 2005-04-13 |
JP2003238506A (ja) | 2003-08-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2008540496A (ja) | 2‐アミノ‐6‐プロピルアミノ‐4,5,6,7‐テトラヒドロベンゾチアゾールおよび中間化合物の分割方法 | |
JP2005531633A (ja) | キラルアミノニトリルの調製 | |
US10370329B2 (en) | Process for the enantiomeric resolution of apremilast intermediates | |
EP3207041B1 (en) | An improved process for the preparation of lurasidone hydrochloride | |
EP2019097A1 (en) | Process for preparing (alphaS)-alpha-(2-methylpropyl)-2-(1-piperidinyl)benzenemethanamine | |
JP5369853B2 (ja) | α−フルオロ−β−アミノ酸類の製造方法 | |
EP2586769B1 (en) | Method for producing (1r, 2s)-1-amino-2-vinyl cyclopropane carboxylic acid ester that has improved optical purity | |
WO2003068727A1 (en) | PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE β-PHENYLALANINE DERIVATIVES | |
EP2643284B1 (en) | Synthetic method of enantiomerically pure 2,2'-dihydroxy-1,1'-binaphthyl-3-carboxylic acid | |
JP3982993B2 (ja) | 光学活性1−(トリフルオロメチルモノ置換フェニル)エチルアミンの精製方法 | |
WO2003051852A1 (fr) | Produit intermediaire et procede permettant de produire un compose a activite optique a partir de ce produit intermediaire | |
JPWO2004031163A1 (ja) | 光学活性α−置換システインまたはその塩の製造方法並びにその合成中間体及びその製造方法 | |
JP3902384B2 (ja) | 光学活性α−メチル−ビス−3,5−(トリフルオロメチル)ベンジルアミン類の精製方法 | |
JP3005669B2 (ja) | 不斉な含フッ素一級アミンの製造法 | |
JP4812434B2 (ja) | 光学活性(s)−2−メチル−6−オキソヘプタン酸の製造方法 | |
JP4752285B2 (ja) | トリフルオロ乳酸の効率的な光学分割 | |
JP2002332277A (ja) | 光学活性2−メチルピペラジンの製造方法 | |
JP5153631B2 (ja) | 新規イミダゾリジノン誘導体とその製造方法及び光学活性アミノ酸の製造方法 | |
JP2011057619A (ja) | 光学活性アミン化合物の製造方法、並びに、ジアステレオマー塩及びその製造方法 | |
JP2000178253A (ja) | 光学活性ピペコリン酸の製造法 | |
JP2008143786A (ja) | 光学分割方法 | |
JP3552260B2 (ja) | 1−アミノ−2−インダノール類の光学分割法 | |
WO2003068728A1 (fr) | Procede de production de $g(b)-phenylalamine optiquement active | |
JP5510040B2 (ja) | 光学活性(r)−1−(4−フルオロフェニル)エチルアミンを得る光学分割 | |
WO2002085833A1 (fr) | Procede de preparation d'acide 2-benzyl-succinique a activite optique et de monamides de l'acide 2-benzyl-succinique a activite optique |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 10914238 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003703284 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2003703284 Country of ref document: EP |