JPS59181244A - Optical resolution of dl-phenylalanine - Google Patents

Optical resolution of dl-phenylalanine

Info

Publication number
JPS59181244A
JPS59181244A JP5167483A JP5167483A JPS59181244A JP S59181244 A JPS59181244 A JP S59181244A JP 5167483 A JP5167483 A JP 5167483A JP 5167483 A JP5167483 A JP 5167483A JP S59181244 A JPS59181244 A JP S59181244A
Authority
JP
Japan
Prior art keywords
phenylalanine
mandelic acid
optically active
optical resolution
complex
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.)
Pending
Application number
JP5167483A
Other languages
Japanese (ja)
Inventor
Keiko Saito
恵子 斉藤
Hiroshi Fujii
博 藤井
Hiroyuki Nohira
博之 野平
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.)
Yamakawa Yakuhin Kogyo KK
Unipres Corp
Original Assignee
Yamakawa Industrial Co Ltd
Yamakawa Yakuhin Kogyo KK
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 Yamakawa Industrial Co Ltd, Yamakawa Yakuhin Kogyo KK filed Critical Yamakawa Industrial Co Ltd
Priority to JP5167483A priority Critical patent/JPS59181244A/en
Publication of JPS59181244A publication Critical patent/JPS59181244A/en
Pending legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE:Optically active mandelic acid is allowed to act on DL-phenylalanine and the resultant complex is resolved utilizing solubility difference to permit optical resolution of DL-phenylalanine in high yield and high purity. CONSTITUTION:Optically active mandelic acid is allowed to act on DL-phenyl- alanine in a solvent such as water or methanol to form 2 kinds of diastereomer complexes. Then, cooling or other operations are effected to crystallize out a hard-soluble complex and the solid is separated from the liquid phase to obtain L-phenylalanine; L-mandelic acid or D-phenylalanine: D-mandelic acid. The resultant complex is decomposed with a mineral acid and the formed mandelic acid is extracted with an organic solvent, then the aqueous phase is neutralized with an alkali to precipitate optically acitve phenylalanine. Direct optical resolution can be effected in high yield and high purity without formation of DL-phenylalanine derivatives.

Description

【発明の詳細な説明】 本発明は、光学活性フェニルアラニンの製造に関するも
のである。し−フェニルアラニンは必要アミノ酸の1つ
であるが、これまで生産峻としては少なく、アミノ酸輸
夜等に用いられているの与であった。最近になり、アミ
ノ酸・論液用の漸増順向とともに1医薬品合成原料しよ
び人工甘味料であるα−L−アスパルチル−し一フェニ
ルアラニジメチルエステル(アスパルテーム)の原料と
して需要が高まりつつある。またD−フェニルアラニン
も′礪膚作用を持つなどから、大儀の光学活性フェニル
アラニンを細枠に単離する必要性−b二生じてきた。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the production of optically active phenylalanine. Phenylalanine is one of the necessary amino acids, but until now it has been produced in small quantities and has only been used as an amino acid. Recently, with the gradual increase in the use of amino acids and logical liquids, demand has been increasing as a raw material for pharmaceutical synthesis and for the artificial sweetener α-L-aspartyl-phenylalanidimethyl ester (aspartame). Furthermore, since D-phenylalanine also has an inflammatory effect, there has been a need to isolate optically active phenylalanine in a small size.

DL−フェニルアラニンの光学分割(では多くの方法が
報告されている。1)DL−フェニルアラニンのN−ク
ロロアセチルd 41本KI鯵・噸カルボキシペプチダ
ーゼを1乍用させ、酵素分割する方法(J 、 B 、
 G11bert、 V、 B。
Optical resolution of DL-phenylalanine (Many methods have been reported. 1) A method of enzymatic resolution using one N-chloroacetyl d41 KI Aji-Kan carboxypeptidase of DL-phenylalanine (J, B ,
G11bert, V, B.

Pr1ce  、and  J、P、Greenste
in、J。
Pr1ce, and J., P., Greenste.
in, J.

Biol、 Chem、 、 1旦−Q、、 473 
 (1949))  2)  N−7セチルーDLフェ
ニルアラニンを糸状iアミノアシラーゼで不語加水分解
する方法(T、To、sa、T、Mori、N、Fus
e  and  I。
Biol, Chem, 1dan-Q, 473
(1949)) 2) Method for hydrolyzing N-7 cetyl-DL phenylalanine with filamentous aminoacylase (T, To, sa, T, Mori, N, Fus
e and I.

Chibata、  Biotechnol、  Bi
oeng、。
Chibata, Biotechnol, Bi
oeng,.

9、 603  (1967))  3)  N−アセ
チル−DL−フェニルアラニンメチルエステルニ蛋白質
分解酵素を作用させ子爪加水分解する方法(%公昭57
−35956)  j)N−アセチル−DL−フェニル
アラニンをアンモニウム頃として過砲仲水溶液より優先
晶、折させる物理化学的方法(特公昭39−24440
)などが仰られている。しかしながら、これら酵素的分
割方法あるいidフェニルアラニン誘導体の分割以外に
直接的にフェニルアラニ/を分割した例1d未だ報告さ
れていない。
9, 603 (1967)) 3) Method of hydrolyzing finger nails by acting with N-acetyl-DL-phenylalanine methyl ester protease (% Kosho 57
-35956) j) Physicochemical method of preferentially crystallizing and folding N-acetyl-DL-phenylalanine from an aqueous solution using ammonium (Japanese Patent Publication No. 39-24440)
) etc. are said. However, no example 1d has yet been reported in which phenylalanine/ is directly resolved other than these enzymatic resolution methods or resolution of id phenylalanine derivatives.

一方、DL−マンデル酸に、L−フェニルアラニンを作
用させると、L−フェニルアラニン・L−マンデル酸複
合体が晶出するという報告(日化誌9’2.999 (
1971) )があるが、Dし一フェニルアラニンが光
学活性なマンデル酸によって光学分前できるという報告
(は見当らない。
On the other hand, it has been reported that when L-phenylalanine is allowed to act on DL-mandelic acid, an L-phenylalanine/L-mandelic acid complex crystallizes (Nichikkashi 9'2.999 (
(1971)), but there is no report that D-phenylalanine can be optically separated by optically active mandelic acid.

これらの事実に基づき、本発明番らは、工業的に加1更
かつ安価な光学活性フェニルアラニンの製造法を開#、
tべく検討を重ねた結果、光学活性マンデル酸を用いる
ことfこより、DL−フェニルアラニンを誘導体((導
くことなく、高純度、商収率で置部光学分割できること
f:見い出した。
Based on these facts, the inventors of the present invention have developed a method for producing optically active phenylalanine that is industrially more processable and inexpensive.
As a result of repeated studies, it was discovered that by using optically active mandelic acid, DL-phenylalanine could be optically resolved into derivatives with high purity and commercial yield without derivation.

すなわち、本発明id D L−フェニルアラニンに光
学活性なマンデル酸を作用させて複合体を形成し、その
溶!i差を利用して光学分割する方法である。
That is, the present invention id D L-phenylalanine is reacted with optically active mandelic acid to form a complex, and the complex is dissolved! This is a method of optical division using the i difference.

本発明の実a&こあたっては、溶媒中でDL−フェニル
アラニ/に光学活性マンテル酸を作用させて2つのジア
ステレオマー複合+ti−全生成させ、その後金と11
などの操作により・難溶性複合体を選択的に晶出させ、
1司液を分離してL−フェニルアラニン−し−マンデル
酸マftI/1iD−フェニルアラニン−D−マン7 
)しr曖f:得る。生成した複合体は、鉱酸により分解
した淡、有・機l各課でマンデル酸を抽出・除去し、ア
ルカリにより中和して光学活1生フェニルアラニ/を析
出させ、必要があればこれを再結晶して光学活性フェニ
ルアラニンを得ることができる。
In the practice of the present invention, optically active mantelic acid is applied to DL-phenylalani/ in a solvent to form two diastereomer complexes +ti-, and then gold and 11
By such operations, the poorly soluble complex is selectively crystallized,
1 liquid was separated and L-phenylalanine-d-mandelic acid MAFTI/1iD-phenylalanine-D-man7
) し r vague f: obtain. The resulting complex is decomposed with mineral acid, and mandelic acid is extracted and removed in the organic and organic sections, neutralized with alkali to precipitate optically active phenylalanine, and if necessary, this is removed. Optically active phenylalanine can be obtained by recrystallization.

使用する溶媒としては、IIfi活、水、メタノール、
エタノール、1−プロパツール、2−プロパノールおよ
びこれらの溶媒の混合溶媒などが好ましい。
The solvents used include IIfi active, water, methanol,
Ethanol, 1-propanol, 2-propanol, a mixed solvent of these solvents, and the like are preferred.

晶析させる際には、特に接種の必要lriないが、晶析
を円管に行なうために難溶性複合体を敵酸加えても良い
When performing crystallization, there is no particular need for inoculation, but enemy acid may be added to the poorly soluble complex in order to perform crystallization in a circular tube.

以下、実姉例を挙げ、本発明方法を詳細に説明する。Hereinafter, the method of the present invention will be explained in detail using a real sister example.

実施例1゜ 水36 +nlにDL−フェニルアラニン16.5SM
’(0,10mol)、L−(ト)−マンデル酸7.6
1g (0,05mol )、メタンスルホン酸5.7
71(0,06mol)を加え、攪拌しつつ加温溶解シ
タ。70℃にてL−フェニルアラニン・L−マンデル酸
複合体の種結晶(〔α〕435+ 120.8°)0.
Ifを接種した。放冷後、同夜分離して、L−フェニル
アラニン・L−マノデル酸複合体11.361を得た。
Example 1 DL-phenylalanine 16.5 SM in 36 +nl of water
'(0.10 mol), L-(t)-mandelic acid 7.6
1g (0.05mol), methanesulfonic acid 5.7
Add 71 (0.06 mol) and dissolve while stirring. Seed crystals of L-phenylalanine/L-mandelic acid complex ([α]435+120.8°) 0.
If was inoculated. After cooling, it was separated on the same night to obtain L-phenylalanine/L-manoderic acid complex 11.361.

〔α〕435+120.6° (c  1.0 、 H
20)この結晶を水34 mlより再結晶して、精製L
−フェニルアラニン・L−マンデル酸複合i本6.53
FtrI&。Cαlj 3−g+t 20.8゜(c 
 1.0.H2O) こうして得た晴委復合体を水10rnlに加温溶解し、
濃塩酸を加えコンゴレッド凛:生とした。放冷後エーテ
ル抽出を行ない2.94 fのし−(ト)−マ/デル:
瞳を回収した。〔α〕20・5+150.9° (c 
 1.0.H2O)回収率93.9チ ニーチル抽出後の水層に6硯定水酸化ナトリウム水溶液
をpH7になるまで加え、析出した し−(へ)−フェ
ニルアラニン2.34ri得だ。〔α〕19・5−20
.9° (cl、0゜H2O) このL−(ハ)−フェニルアラニンを10m1の水より
再結晶して、悄映し−(→−フェニルア特許出願人  
山用薬品工栗昧式会社 代表取締役 取原識部
[α]435+120.6° (c 1.0, H
20) Recrystallize this crystal from 34 ml of water to obtain purified L.
- Phenylalanine/L-mandelic acid complex i book 6.53
FtrI&. Cαlj 3-g+t 20.8° (c
1.0. H2O) The thus obtained clear polymer complex was dissolved in 10 rnl of water by heating,
Congo Red Rin was made raw by adding concentrated hydrochloric acid. After cooling, ether extraction was performed to obtain 2.94 f.
The eyes were recovered. [α]20・5+150.9° (c
1.0. H2O) recovery rate: 93.9 To the aqueous layer after extraction with chinychile, 6 ml of constant sodium hydroxide aqueous solution was added until the pH reached 7, and 2.34 ri of shi-(he)-phenylalanine was precipitated. [α] 19.5-20
.. 9° (cl, 0°H2O) This L-(c)-phenylalanine was recrystallized from 10 ml of water, and the crystallization - (→- Phenylua Patent Applicant
Shikibe Torihara, Representative Director of Yamayo Pharmaceutical Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] DL−フェニルアラニンにマンデル酸の光学活性体を作
用させ、生成した腹き体を、その溶解度差を利用して分
割することを特徴とするDL−フェニルアラニンの光学
分割法
An optical resolution method for DL-phenylalanine, which is characterized in that an optically active form of mandelic acid is applied to DL-phenylalanine, and the resulting abdominal bodies are separated by utilizing the difference in solubility thereof.
JP5167483A 1983-03-29 1983-03-29 Optical resolution of dl-phenylalanine Pending JPS59181244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5167483A JPS59181244A (en) 1983-03-29 1983-03-29 Optical resolution of dl-phenylalanine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5167483A JPS59181244A (en) 1983-03-29 1983-03-29 Optical resolution of dl-phenylalanine

Publications (1)

Publication Number Publication Date
JPS59181244A true JPS59181244A (en) 1984-10-15

Family

ID=12893423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5167483A Pending JPS59181244A (en) 1983-03-29 1983-03-29 Optical resolution of dl-phenylalanine

Country Status (1)

Country Link
JP (1) JPS59181244A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158301A2 (en) * 1984-04-06 1985-10-16 Nippon Kayaku Kabushiki Kaisha Process for producing optically active phenylalanine
JPS61115052A (en) * 1984-11-08 1986-06-02 Nippon Kayaku Co Ltd Production of optically active mandelic acid
CN1301967C (en) * 2004-12-15 2007-02-28 南京大学 Method of chiral separation for D,L-phenylalanine ester or its salt

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158301A2 (en) * 1984-04-06 1985-10-16 Nippon Kayaku Kabushiki Kaisha Process for producing optically active phenylalanine
JPS61115052A (en) * 1984-11-08 1986-06-02 Nippon Kayaku Co Ltd Production of optically active mandelic acid
CN1301967C (en) * 2004-12-15 2007-02-28 南京大学 Method of chiral separation for D,L-phenylalanine ester or its salt

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