JPH02229152A - Production of cyclic amino acid - Google Patents

Production of cyclic amino acid

Info

Publication number
JPH02229152A
JPH02229152A JP1050782A JP5078289A JPH02229152A JP H02229152 A JPH02229152 A JP H02229152A JP 1050782 A JP1050782 A JP 1050782A JP 5078289 A JP5078289 A JP 5078289A JP H02229152 A JPH02229152 A JP H02229152A
Authority
JP
Japan
Prior art keywords
amino acid
formula
alkyl
aryl
cycloalkyl
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.)
Granted
Application number
JP1050782A
Other languages
Japanese (ja)
Other versions
JP2866098B2 (en
Inventor
Tsutomu Kagitani
勤 鍵谷
Seiichi Nishimoto
清一 西本
Fumiaki Otani
文章 大谷
Kunisuke Izawa
井沢 邦輔
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.)
Ajinomoto Co Inc
Original Assignee
Ajinomoto Co Inc
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Filing date
Publication date
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Priority to JP1050782A priority Critical patent/JP2866098B2/en
Publication of JPH02229152A publication Critical patent/JPH02229152A/en
Application granted granted Critical
Publication of JP2866098B2 publication Critical patent/JP2866098B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Pyrrole Compounds (AREA)
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Abstract

PURPOSE:To obtain a cyclic amino acid which is frequently used in medicines or the like readily in high yield by irradiating an amino acid derivative bearing an amino acid on the side chain with ultraviolet rays. CONSTITUTION:An amino acid of formula I (R<1> is alkyl, cycloalkyl, aryl, aralkyl bearing an amino group; R<2>, R<3> are H, alkyl, cycloalkyl, aryl, aralkyl; two of R<1>, R<2> and R<3> may bond to each other to form a ring), for example, in the form of an aqueous solution is irradiated with ultraviolet rays in the presence of a catalyst of Lu, Rh, Pd, Os, Ir, Pt or the like, or an oxide of them, supported on a carrier at 10 to 30 deg.C under the normal pressure, to give a cyclic amino acid of formula II (R<4> is alkyl, cycloalkyl, aryl). The amino acid is kept in less than 5wt.% concentration and the amount of the metal or its oxide on the carrier is set to 0.5 to 5wt.%.

Description

【発明の詳細な説明】 〔産業−にの利用分野〕 本発明は環状アミノ酸の新規製造方法に関する。[Detailed description of the invention] [Industrial field of use] The present invention relates to a novel method for producing cyclic amino acids.

医薬品等に多用されるアミノ酸類縁化合物、とくにプロ
リンやピペコリン酸などの環状アミノ酸類の製造に利用
される。
It is used in the production of amino acid analogs, especially cyclic amino acids such as proline and pipecolic acid, which are often used in pharmaceuticals.

〔従来の技術〕[Conventional technology]

環状アミノ酸類、とくに光学活性化合物の合成法として
は、天然のアミノ酸類を利用してアミノ酸炭素の立体配
置を保持したまま反応させる方法が知られている。(例
えば、L−リジンからLピペコリン酸の合成、Tosh
iyuki ら、ブレチン・オブ・ケミカル・ソサエテ
ィ・オブ・ジャパン(Bull、Chem、Soc、J
pn、) 、48.1341−1342頁(1975)
等)。しかしながら、この反応工程は複雑な数多くの段
階から成り、全工程を通じた収率は高々30%以下であ
る。
As a method for synthesizing cyclic amino acids, particularly optically active compounds, a method is known in which natural amino acids are used and reacted while maintaining the steric configuration of amino acid carbons. (For example, synthesis of L-pipecolic acid from L-lysine, Tosh
iyuki et al., Bulletin of Chemical Society of Japan (Bull, Chem, Soc, J.
pn, ), pp. 48.1341-1342 (1975)
etc). However, this reaction process consists of many complicated steps, and the yield throughout the entire process is at most 30% or less.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

本発明は、側鎖にアミノ基を有するアミノ酸誘導体を原
料とし、例えば常温常圧という緩やかな条件下で、簡便
な反応工程により収率良く環状アミノ酸を製造する方法
を開発することを目的とする。
The purpose of the present invention is to develop a method for producing a cyclic amino acid in high yield through a simple reaction process using an amino acid derivative having an amino group in the side chain as a raw material under mild conditions such as room temperature and normal pressure. .

〔課題を解決するための手段〕[Means to solve the problem]

本発明者らは側鎖にアミノ基を有するアミノ酸誘導体を
、例えば水溶液の形で好ましくは酸化チタン(IV)又
はこれにルテニウム、ロジウム、パラジウム、オスミウ
ム、イリジウム、白金等の金属又はその酸化物を担持さ
せた触媒の共存下に、紫外線を作用せしめることにより
目的とする環状アミノ酸を容易に、収率良く製造できる
ことを見出し、この発見に基づき本発明を完成するに到
った。
The present inventors prepared an amino acid derivative having an amino group in the side chain, preferably titanium (IV) oxide, or a metal such as ruthenium, rhodium, palladium, osmium, iridium, or platinum, or an oxide thereof, in the form of an aqueous solution. It was discovered that the desired cyclic amino acid could be easily produced in good yield by applying ultraviolet rays in the presence of a supported catalyst, and based on this discovery, the present invention was completed.

本発明の原料物質である側鎖にアミノ基を有する前記ア
ミノ酸誘導体は、−i式 %式% (式中、R1は、アミン基を含有し、炭素数2〜16の
アルキル基、炭素数5〜16のシクロアルキル基炭素数
6〜14のアリール基、又は炭素数7〜16アラルキル
基の、R2及びR3は、相互に異っていてもよく、それ
ぞれ水素原子、炭素数2〜16のアルキル基、炭素数5
〜16のシクロアルキル基炭素数6〜14のアリール基
を、又は炭素数7〜16のアラルキル基を表わし、RR
2及びR3のいずれか二つは相互に結合して環を形成し
ていてもよい。)で表示されるアミノ酸である。具体例
としでは、例えば、L−1D−1又はDL−リジン、オ
ルニチン等などのアミノ酸;これらのアミノ酸のアルキ
ル、アリール、あるいはアラルキルエステル(例えば、
リジンメチルエステル);これらのアミノ酸の1位にお
けるアルキル、アリーム、又はアラルキル置換体(例え
ば、1−フェニルリジン)などが挙げられる。
The amino acid derivative having an amino group in the side chain, which is a raw material of the present invention, is a -i formula % formula % (wherein R1 is an alkyl group containing an amine group and having 2 to 16 carbon atoms, a carbon number 5 ~16 cycloalkyl group, C6-14 aryl group, or C7-16 aralkyl group, R2 and R3 may be different from each other, and each represents a hydrogen atom and an alkyl group having 2-16 carbon atoms. group, carbon number 5
~16 cycloalkyl group represents an aryl group having 6 to 14 carbon atoms, or an aralkyl group having 7 to 16 carbon atoms, RR
Any two of 2 and R3 may be bonded to each other to form a ring. ) is an amino acid represented by Specific examples include amino acids such as L-1D-1 or DL-lysine, ornithine; alkyl, aryl, or aralkyl esters of these amino acids (e.g.
lysine methyl ester); alkyl, allem, or aralkyl substituted products at the 1-position of these amino acids (eg, 1-phenylysine); and the like.

反応系は前記アミノ酸の例えば水溶液と酸化チタン(T
V)又はこれにルテニウム、ロジウム、パラジウム、オ
スミウム、イリジウム、白金等の金属又はその酸化物の
単独又は混合物を担持させた触媒の混合物である。アミ
ノ酸類の濃度は分子間反応を防ぐために5%(重量%、
以下同様)以下、特に0.5−1%とするのが好ましい
。触媒に担持させる金属又はその酸化物の担持量は0.
5−5%程度が適当である。
The reaction system includes, for example, an aqueous solution of the amino acid and titanium oxide (T
V) or a mixture of catalysts in which metals such as ruthenium, rhodium, palladium, osmium, iridium, platinum, or oxides thereof, singly or in mixtures, are supported thereon. The concentration of amino acids was 5% (wt%) to prevent intermolecular reactions.
The same applies hereinafter) Below, it is particularly preferable to set it as 0.5-1%. The amount of metal or its oxide supported on the catalyst is 0.
Approximately 5-5% is appropriate.

前記アミノ酸の水溶液と例えば酸化チタン(IV)又は
これにルテニウム、ロジウム、パラジウム、オスミウム
、イリジウム、白金等の金属又はその酸化物の単独又は
混合物を担持させた触媒の混合物を反応容器に入れ、外
部或いは内部から光を照射するとよい。反応は10〜3
0℃で常圧にて充分進行する。反応雰囲気はアルゴンガ
ス、窒素ガス等の不活性ガス雰囲気とするのが好ましい
A mixture of the aqueous solution of the amino acid and a catalyst prepared by supporting titanium (IV) oxide or a metal such as ruthenium, rhodium, palladium, osmium, iridium, platinum, or a mixture thereof, alone or in a mixture, is placed in a reaction vessel, and an external Alternatively, light may be irradiated from inside. The reaction is 10-3
The reaction progresses satisfactorily at 0°C and normal pressure. The reaction atmosphere is preferably an inert gas atmosphere such as argon gas or nitrogen gas.

反応容器としては反応混合物中の成分と反応しない材質
のものという条件を満たすものであれば特に限定されな
いが、反応容器外から光を照射する場合には光の透過性
が高いものが好ましい。
The reaction vessel is not particularly limited as long as it is made of a material that does not react with the components in the reaction mixture, but when irradiating light from outside the reaction vessel, a vessel with high light transmittance is preferred.

本発明で得られる環状アミノ酸は、例えば−儀式 %式% で示される化合物である。式中、R2及びR3は前記同
様の意義を有する。R4は、前記R′の意義において脱
アミノ基した置換基を意味する。
The cyclic amino acid obtained in the present invention is, for example, a compound represented by the formula %. In the formula, R2 and R3 have the same meanings as above. R4 means a deaminated substituent in the meaning of R' above.

〔作用〕[Effect]

光吸収により酸化チタン(IV )中に生成した正孔に
よる原料物質の側鎖のアミノ基の酸化と引き続く加水分
解によりアルデヒド基が生し、これと同一分子内のアミ
ノ基との脱水縮合の結果生成した環状イミンが、正孔と
同時に発生した電子により還元されて目的物環状アミノ
酸が生成したものと考えられる。
Oxidation of amino groups in the side chains of the raw material by holes generated in titanium (IV) oxide due to light absorption and subsequent hydrolysis generate aldehyde groups, which are dehydrated and condensed with amino groups in the same molecule. It is thought that the generated cyclic imine was reduced by holes and electrons generated at the same time, and the target cyclic amino acid was generated.

〔実施例〕〔Example〕

次に、本発明の方法を実施例に基づいて説明する。 Next, the method of the present invention will be explained based on examples.

実施例I L  IJレシン酸塩240■、0.02規定水酸化す
) IJウム水溶液60m1、及び酸化白金10%を添
加した酸化チタン(IV)600■を混合し、硬質硝子
試験管に入れた。系内の空気をアルゴンガスで置換して
ゴム栓で密封した後、400ワツト高圧水銀灯を用いて
5 cmの距離から室温下で44時間照射した。酸化チ
タン(TV)を遠心分離により取り除いた後、上澄み液
の水分を大部分留去し、陽イオン交換樹脂筒を通過させ
た。ニンヒドリン試薬により発色する留分を濃縮して、
吸湿性の淡黄色の粉末を得た。56■、単離収率33%
。単離生成物を重水に溶解し3−()IJメチルシリル
)プロピオン酸ナトリウム−2,2,3,3−d4(以
下rTPsJと略す)を基準物質(Oppm)としてプ
ロトンNMR測定を行うと、光照射前の試料に認められ
た1、4.3.0.3.4ppmのりシンに由来するピ
ークが消失し、代わりに1.8.2.2.3.1.3.
4、および3.6 ppHlにピペコリン酸に特徴的な
ピークを1iII認した。(2,3,4,6−テトラ0
−アセチル−β−D−グルコピラノシルイソチオシアネ
ート(以下rGITcJと略す)により誘導体化した試
料の逆相系高速液体クロマトグラフ分析によりL体74
%、0体26%と求められた。
Example I L 240 ml of IJ lecinate, 0.02 N hydroxide solution) and 600 ml of titanium (IV) oxide to which 10% platinum oxide was added were mixed and placed in a hard glass test tube. . After replacing the air in the system with argon gas and sealing it with a rubber stopper, it was irradiated for 44 hours at room temperature from a distance of 5 cm using a 400 Watt high pressure mercury lamp. After removing titanium oxide (TV) by centrifugation, most of the water in the supernatant was distilled off, and the supernatant was passed through a cation exchange resin column. Concentrate the fraction that develops color with ninhydrin reagent,
A hygroscopic pale yellow powder was obtained. 56■, isolated yield 33%
. When the isolated product was dissolved in heavy water and proton NMR measurement was performed using sodium 3-()IJmethylsilyl)propionate-2,2,3,3-d4 (hereinafter abbreviated as rTPsJ) as a reference material (Oppm), light was detected. The peaks derived from 1, 4, 3, 0, 3, 4 ppm glue, which were observed in the sample before irradiation, disappeared and were replaced by 1, 8, 2, 2, 3, 1, 3.
4 and 3.6 ppHl, peaks characteristic of pipecolic acid were observed. (2,3,4,6-tetra0
-L-form 74 was determined by reversed-phase high performance liquid chromatography analysis of a sample derivatized with -acetyl-β-D-glucopyranosyl isothiocyanate (hereinafter abbreviated as rGITcJ).
%, 0 body 26%.

実施例2 実施例1におけるL−リシン塩酸塩240nwに代えて
L−オルニチン塩酸塩300nvを用い、同一条件下で
反応させてプロリン89■を得た。単離収率43%。単
離生成物の重水溶液のプロトンNMRスペクトルには、
光照射前の試料に認められた1、8.3.0.3.5 
ppmのオルニチンに由来するピークは認められず、代
わりに2.0.2.4.3.4、および4.1 ppm
にプロリンに特徴的なピークを確認した。GITCによ
り誘導体化した生成物の逆相系高速液体クロマトグラフ
分析により、L体64%、0体36%と求められた。
Example 2 300 nv of L-ornithine hydrochloride was used in place of 240 nw of L-lysine hydrochloride in Example 1, and the reaction was carried out under the same conditions to obtain 89 ■ of proline. Isolated yield 43%. The proton NMR spectrum of a heavy aqueous solution of the isolated product includes:
1, 8.3.0.3.5 observed in the sample before light irradiation
No peaks derived from ornithine at ppm were observed, but instead at 2.0.2.4.3.4, and 4.1 ppm.
A peak characteristic of proline was confirmed. Reversed-phase high performance liquid chromatography analysis of the product derivatized by GITC determined that the L-form was 64% and the 0-form was 36%.

実施例3 L−リシン塩酸塩20■、蒸溜水5mβ、及び酸化白金
5%を添加した酸化チタン(TV)50■の混合物を含
む硬質硝子試験管を4木調製した。
Example 3 Four hard glass test tubes containing a mixture of 20 μm of L-lysine hydrochloride, 5 mβ of distilled water, and 50 μm of titanium oxide (TV) to which 5% platinum oxide was added were prepared.

このうち3木のそれぞれに、0.1規定水酸化ナトリウ
ム水溶液を0.04.0.1、及び0.5m6添加し、
混合物の初期pl+を第1表に示す値に調整した。
Of these, 0.04, 0.1, and 0.5 m6 of 0.1N aqueous sodium hydroxide solution were added to each of the three trees,
The initial pl+ of the mixture was adjusted to the values shown in Table 1.

残る1木は水酸化ナトリウム水溶液を加えずにそのまま
使用した。試験管内の空気をアルゴンガスで置換してゴ
ム栓で密封した後、400ワソI・高圧水銀灯を用いて
5 cmの距離から室温下で24時間照射した。遠心分
離により酸化チタン(IV)を取り除いた上澄みにGr
TCを作用させて誘導体化し、HPLCを用いて収率な
らびに不斉収率を測定した結果を第1表に示す。
The remaining one tree was used as it was without adding an aqueous sodium hydroxide solution. After replacing the air in the test tube with argon gas and sealing it with a rubber stopper, it was irradiated for 24 hours at room temperature from a distance of 5 cm using a 400 waso I high pressure mercury lamp. Gr is added to the supernatant after removing titanium (IV) oxide by centrifugation.
Table 1 shows the results of derivatization with TC and measurement of yield and asymmetric yield using HPLC.

第1表 第1表から明らかな如く、初期pHを小さくすると、単
位時間あたりのし一リシン転化率は若干低下するものの
不斉収率が向上する。
As is clear from Table 1, when the initial pH is decreased, the asymmetric yield improves, although the conversion rate of lysine per unit time slightly decreases.

〔発明の効果〕〔Effect of the invention〕

以上から明らかな如く、本発明の方法によれば、原料物
質の立体配置を保持した環状アミノ酸の優先的合成を常
温常圧下で容易に行うことが出来るので、 本発明は、 環状アミノ酸の製造分野、 或は 医薬品製造分野で極めて有用である。
As is clear from the above, according to the method of the present invention, preferential synthesis of a cyclic amino acid that maintains the configuration of the raw material can be easily carried out at room temperature and normal pressure. , or extremely useful in the pharmaceutical manufacturing field.

特 許 出 願 人 鍵  谷      勤 味の素株式会社Special permission Out wish Man Key Tani Tsutomu Ajinomoto Co., Inc.

Claims (1)

【特許請求の範囲】 1、一般式 ▲数式、化学式、表等があります▼ で示されるアミノ酸に紫外線を作用せしめることを特徴
とする環状アミノ酸の製造方法。 但し、式中、R^1は、一級アミノ基を含有し、アルキ
ル、シクロアルキル、アリール、又はアラルキル基を、
R^2及びR^3は、相互に異っていてもよく、それぞ
れ水素原子、又はアルキル、シクロアルキル、アリール
若しくはアラルキル基を、それぞれ表わすが、R^1、
R^2及びR^3のいずれか二つが相互に結合して環を
形成してもよい。 2、紫外線を作用せしめる際酸化チタン(IV)又はこれ
に金属若しくは金属酸化物を担持させた触媒が存在する
請求項1記載の方法。 3、金属がルテニウム、ロジウム、パラジウム、オスミ
ウム、イリジウム、及び白金の少なくとも一種である請
求項2記載の方法。 4、アミノ酸が水溶液の状態で存する請求項1記載の方
法。 5、環状アミノ酸が一般式: ▲数式、化学式、表等があります▼ で示されるものである請求項1記載の方法。 但し、式中、R^2及びR^3は、相互に異っていても
よく、それぞれ水素原子、又はアルキル、シクロアルキ
ル、アリール若しくはアラルキル基を、R^4は、アル
キル、シクロアルキル、アリール又はアラルキル基を、
それぞれ表わすが、R^2、R^3及びR^4のいずれ
か二つが相互に結合して環を形成してもよい。
[Claims] 1. A method for producing a cyclic amino acid, which comprises exposing an amino acid represented by the general formula (numerical formula, chemical formula, table, etc.) to ultraviolet light. However, in the formula, R^1 contains a primary amino group, and represents an alkyl, cycloalkyl, aryl, or aralkyl group,
R^2 and R^3 may be different from each other and each represents a hydrogen atom, or an alkyl, cycloalkyl, aryl or aralkyl group, but R^1,
Any two of R^2 and R^3 may be bonded to each other to form a ring. 2. The method according to claim 1, wherein titanium (IV) oxide or a catalyst in which a metal or metal oxide is supported on titanium (IV) oxide is present when the ultraviolet rays are applied. 3. The method according to claim 2, wherein the metal is at least one of ruthenium, rhodium, palladium, osmium, iridium, and platinum. 4. The method according to claim 1, wherein the amino acid is present in an aqueous solution. 5. The method according to claim 1, wherein the cyclic amino acid has a general formula: ▲A mathematical formula, a chemical formula, a table, etc.▼. However, in the formula, R^2 and R^3 may be different from each other and each represents a hydrogen atom or an alkyl, cycloalkyl, aryl or aralkyl group, and R^4 represents an alkyl, cycloalkyl, aryl group. Or an aralkyl group,
Although each is represented, any two of R^2, R^3 and R^4 may be bonded to each other to form a ring.
JP1050782A 1989-03-02 1989-03-02 Method for producing cyclic amino acid Expired - Lifetime JP2866098B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1050782A JP2866098B2 (en) 1989-03-02 1989-03-02 Method for producing cyclic amino acid

Publications (2)

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JPH02229152A true JPH02229152A (en) 1990-09-11
JP2866098B2 JP2866098B2 (en) 1999-03-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6172234B1 (en) 1998-07-27 2001-01-09 Sumitomo Chemical Company, Limited Optically active cyclic amino acid ester derivatives and processes for producing the same
US6245588B1 (en) * 1996-04-19 2001-06-12 Rohm Co., Ltd Semiconductor light-emitting device and method of manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6245588B1 (en) * 1996-04-19 2001-06-12 Rohm Co., Ltd Semiconductor light-emitting device and method of manufacturing the same
US6172234B1 (en) 1998-07-27 2001-01-09 Sumitomo Chemical Company, Limited Optically active cyclic amino acid ester derivatives and processes for producing the same

Also Published As

Publication number Publication date
JP2866098B2 (en) 1999-03-08

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