JPH01228946A - Synthesis of beta-hydroxyphenetylamines - Google Patents

Synthesis of beta-hydroxyphenetylamines

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Publication number
JPH01228946A
JPH01228946A JP5535988A JP5535988A JPH01228946A JP H01228946 A JPH01228946 A JP H01228946A JP 5535988 A JP5535988 A JP 5535988A JP 5535988 A JP5535988 A JP 5535988A JP H01228946 A JPH01228946 A JP H01228946A
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JP
Japan
Prior art keywords
lower alkyl
iii
group
formula
added
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
JP5535988A
Other languages
Japanese (ja)
Inventor
Keiko Shimamoto
啓子 島本
Yasushi Oofuna
大船 泰史
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.)
Suntory Ltd
Original Assignee
Suntory Ltd
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Filing date
Publication date
Application filed by Suntory Ltd filed Critical Suntory Ltd
Priority to JP5535988A priority Critical patent/JPH01228946A/en
Publication of JPH01228946A publication Critical patent/JPH01228946A/en
Pending legal-status Critical Current

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE:To obtain the subject compound useful as a starting substance for the synthesis of neurotropic agent, beta-hydroxytyrosines, by reacting a phenetylamine derivative with a catalyst and hydrolyzing the resultant cyclic carbamate with an alkali. CONSTITUTION:The objective compound of formula III can be produced by reacting a phenetylamine derivative of formula I (R<1> is lower alkyl, lower alkoxycarbonyl, acyloxymethyl or H; R<2> is H or lower alkyl; R<3> is lower alkyl; X is H, lower alkyl, lower alkoxy or halogen; n is 1 or 3) with copper sulfate, iron (III) chloride, iron (III) sulfate, or copper acetate and potassium persulfate or lead tetraacetate in a solvent (e.g., acetonitrile) in an inert gas atmosphere at room temperature -80 deg.C and hydrolyzing the resultant cyclic carbamate of formula III with an alkali (e.g., barium hydroxide) in a solvent (e.g., ethanol) at 50-90 deg.C.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、チロシン誘導体またはフェネチルアミン誘導
体のβ位に立体選択的に水酸基が導入された化合物を合
成する方法に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for synthesizing a compound in which a hydroxyl group is stereoselectively introduced into the β-position of a tyrosine derivative or a phenethylamine derivative.

本発明の方法により得られる化合物は、向神経作用など
の生理活性を有するβ−ヒドロキシチロシン類またはそ
の類縁の新規化合物の合成出発物質として有用である。
The compounds obtained by the method of the present invention are useful as starting materials for the synthesis of β-hydroxytyrosines or novel compounds related to them, which have physiological activities such as neurotropic activity.

(従来の技術) エフェドリン、エフェドリンに代表される一群のβ−ヒ
ドロキシフェネチルアミン類は、向神経作用等の種々の
生理作用を示すものが多く、そのためβ−ヒドロキシチ
ロシン誘導体を含む一連のフェネチルアミン系誘導体に
ついて、医薬品開発に向は現在も活発な研究活動が行わ
れている。
(Prior art) A group of β-hydroxyphenethylamines represented by ephedrine and ephedrine often exhibit various physiological effects such as neurotropic effects. Therefore, a series of phenethylamine derivatives including β-hydroxytyrosine derivatives have been developed. Currently, active research activities are being carried out in the direction of drug development.

β−ヒドロキシチロシン類の合成法としては、通常アリ
ルアルデヒドとグリシンを縮合し、生成するDL−スレ
オ及びDL−エリスロ体を分割する方法がとられてきた
。近年になり、立体選択的な手法によるβ−ヒドロキシ
チロシン類の合成方法の開発が盛んになり、例えば、検
出らはアミノケトンのキラルな還元法(J、 Am、 
Chew、 Soe、。
Conventional methods for synthesizing β-hydroxytyrosine have been to condense allylaldehyde and glycine and separate the resulting DL-threo and DL-erythro forms. In recent years, the development of methods for synthesizing β-hydroxytyrosines using stereoselective methods has become active.
Chew, Soe.

106巻、4629頁、1984年)を、また伊藤らは
不斉金属錯体を用いたアリルアルデヒドとイソシアノ酢
酸エステルとの縮合法(j、 Am、 Chcm。
106, p. 4629, 1984), and Ito et al. described a condensation method of allylaldehyde and isocyanoacetate using an asymmetric metal complex (j, Am, Chcm.

Soc、、 108巻、6405頁、1986年)を報
告している。
Soc, Vol. 108, p. 6405, 1986).

しかし、これまで報告されているβ−ヒドロキシチロシ
ン類化合物は、いずれもβ位に水酸基ではなく一旦アル
デヒドやカルボン酸基を導入し、この誘導体から更に水
酸基に導くものであった。
However, all of the β-hydroxytyrosine compounds that have been reported so far have introduced an aldehyde or carboxylic acid group at the β-position instead of a hydroxyl group, and this derivative is further led to a hydroxyl group.

しかも、ある場合にはラセミ分割が必要であっt;。Moreover, in some cases racemic division is necessary.

(発明が解決しようとする課題) チロシンをはじめとしてフェネチルアミン誘導体は天然
物として光学活性体が容易に入手でき、それらのベンジ
ル位への水酸基の導入はβ−ヒドロキシフェネチルアミ
ン類を合成する上で利点が大きい。そこで、本発明はフ
ェネチルアミン誘導体のベンジル位に効率の良い反応に
より、且つ立体選択的に水酸基を導入する方法を提供す
ることを目的とする。
(Problems to be Solved by the Invention) Optically active forms of phenethylamine derivatives such as tyrosine are easily available as natural products, and the introduction of a hydroxyl group to their benzyl position is advantageous in synthesizing β-hydroxyphenethylamines. big. Therefore, an object of the present invention is to provide a method for stereoselectively introducing a hydroxyl group into the benzyl position of a phenethylamine derivative by an efficient reaction.

(課題を解決するための手段) 本発明者らは、チロシン誘導体を含むフェネチルアミン
誘導体のベンジル位に水酸基を立体選択的に導入すべく
鋭意研究を重ねた結果、N−t−ブトキシカルボニル誘
導体に硫酸銅及び過硫酸カリウムを作用させると立体選
択的に環状カルバメートを形成し、これを利用してβ位
にヒドロキシ基を有する7エネチルアミン類を合成する
ことが可能であるという知見を得、本発明を完成した。
(Means for Solving the Problems) As a result of intensive research to stereoselectively introduce a hydroxyl group into the benzyl position of phenethylamine derivatives including tyrosine derivatives, the present inventors found that We have obtained the knowledge that when copper and potassium persulfate are reacted, a cyclic carbamate is stereoselectively formed, and that it is possible to synthesize 7-enethylamines having a hydroxyl group at the β-position by using this, and the present invention has been developed. completed.

本発明は、−最大(II): (式中 R1は低級アルキル基、低級アルコキシカルボ
ニル基、アシルオキシメチル基または水素原子であり;
R2は水素原子または低級アルキル基であり;R3は低
級アルキル基であり;Xは水素原子、低級アルキル基、
低級アルコキシ基またはハロゲン原子であり;nは1ま
たは2である)で表されるフェネチルアミン誘導体に硫
酸銅、塩化鉄(I[I)、硫酸鉄(I[)もしくは酢酸
銅及び過硫酸カリウムもしくは四酢酸銅を作用させて一
般式(): (式中、R1、R2、R3、X及びnは前記の定義と同
じである)で表される化合物とし、続いて、この式(I
I[)の環状カルバメートをアルカリ加水分解すること
により一般式(I): H (式中、R1、R2、R3、X及びnは前記の定義と同
じである)で表されるβ位にヒドロキシ基を有するフェ
ネチルアミン類を合成する方法を提供する。
The present invention provides - maximum (II): (wherein R1 is a lower alkyl group, a lower alkoxycarbonyl group, an acyloxymethyl group or a hydrogen atom;
R2 is a hydrogen atom or a lower alkyl group; R3 is a lower alkyl group; X is a hydrogen atom, a lower alkyl group,
lower alkoxy group or halogen atom; n is 1 or 2), copper sulfate, iron chloride (I[I), iron sulfate (I[) or copper acetate and potassium persulfate or A compound represented by the general formula (): (wherein R1, R2, R3,
By alkaline hydrolysis of the cyclic carbamate of I[), hydroxyl is added to the β-position represented by the general formula (I): H (wherein R1, R2, R3, X and n are the same as defined above). Provided are methods for synthesizing phenethylamines having groups.

本発明の以下の方法により製造することができる式(I
)で表されるフェネチルアミン誘導体において、 Rl
は、低級アルキル基としてはメチル、エチル、n−プロ
ピル、n−ブチルもしくはバレリルが好ましく、低級ア
ルコキシカルボニル基としてはメトキシカルボニルもし
くはエトキシカルボニル基が好ましく、また、アシルオ
キシメチル基としてはアセトキシメチル基もしくはペン
ゾイルオキンメチル基が好ましく:R2は、低級アルキ
ル基としてはメチル、エチル、n−プロピルもしくはn
−ブチル基が好ましく;R3は、低級アルキル基として
はメチル、エチル、n−プロピルもしくはn−ブチル基
が好ましく、低級アルコキノ基としてはメトキシ基もし
くはエトキシ基が好ましく;Xは、低級アルキル基とし
てはメチル、エチル、n−プロピルもしくはn−ブチル
基が好ましい。
Formula (I) can be produced by the following method of the present invention
) in the phenethylamine derivative represented by Rl
The lower alkyl group is preferably methyl, ethyl, n-propyl, n-butyl or valeryl, the lower alkoxycarbonyl group is preferably methoxycarbonyl or ethoxycarbonyl group, and the acyloxymethyl group is preferably acetoxymethyl group or penzoyl group. Oquinemethyl group is preferred: R2 is lower alkyl group such as methyl, ethyl, n-propyl or n
-butyl group is preferred; R3 is preferably a methyl, ethyl, n-propyl or n-butyl group as a lower alkyl group, and a methoxy or ethoxy group is preferred as a lower alkokino group; Methyl, ethyl, n-propyl or n-butyl groups are preferred.

本発明の方法は、以下のようにして実施することができ
る。即ち、式(II)で表されるフェネチルアミン誘導
体を不活性溶媒、好ましくはアセトニトリルに溶解し、
不活性ガス(例えば、アルゴンガス、窒素ガス等)雰囲
気下で過硫酸カリウム水溶液もしくは四酢酸鉛水溶液及
び硫酸銅水溶液、塩化鉄(III)水溶液、硫酸鉄(n
I)水溶液もしくは酢酸銅水溶液を加え、室温ないし8
0°Cで0.5〜5時間撹拌して反応させる。この際、
加える過硫酸カリウム及び硫酸銅等の量は、特に限定さ
れないが、好ましくは7工ネチルアミン誘導体に対して
それぞれ約2当量及び0.2当量である。
The method of the present invention can be carried out as follows. That is, a phenethylamine derivative represented by formula (II) is dissolved in an inert solvent, preferably acetonitrile,
Under an inert gas (e.g. argon gas, nitrogen gas, etc.) atmosphere, potassium persulfate aqueous solution or lead tetraacetate aqueous solution, copper sulfate aqueous solution, iron (III) chloride aqueous solution, iron sulfate (n
I) Add aqueous solution or copper acetate aqueous solution and heat from room temperature to 8
Stir and react at 0°C for 0.5-5 hours. On this occasion,
The amounts of potassium persulfate, copper sulfate, etc. to be added are not particularly limited, but are preferably about 2 equivalents and 0.2 equivalents, respectively, relative to the heptamine netylamine derivative.

反応液を適当な溶媒(例えば、酢酸エチル、クロロホル
ム等)で抽出し、カラムクロマトグラフィー(例えば、
シリカゲルを充填したカラムに付し、エーテル、酢酸エ
チルもしくはアセトニトリルなどで溶出する)等の通常
の方法を用いて精製することにより式(III)で表さ
れる環状カルバメートを得る。
The reaction solution was extracted with an appropriate solvent (e.g., ethyl acetate, chloroform, etc.) and subjected to column chromatography (e.g.,
The cyclic carbamate represented by formula (III) is obtained by purification using a conventional method such as applying to a column packed with silica gel and eluting with ether, ethyl acetate or acetonitrile.

この環状カルバメートを反応に関与しない溶媒、例えば
エタノールに溶解し、アルカリ、好ましくは水酸化バリ
ウム水溶液を加え、50〜90°Cで加水分解する。反
応液を中和後、必要に応じて官能基を保護したのち(例
えば、アミノ基をt−ブトキンカルボニル基で保護する
)、溶媒抽出し、カラムクロマトグラフィー等の通常の
方法により精製することにより式(I)で表されるβ−
ヒドロキシフェネチルアミン誘導体又はその保護化合物
を得ることができる。
This cyclic carbamate is dissolved in a solvent that does not participate in the reaction, such as ethanol, and an alkali, preferably an aqueous barium hydroxide solution, is added and hydrolyzed at 50 to 90°C. After neutralizing the reaction solution and protecting the functional groups as necessary (for example, protecting the amino group with a t-butquine carbonyl group), solvent extraction is performed, and purification is performed by a conventional method such as column chromatography. β- represented by formula (I)
Hydroxyphenethylamine derivatives or protected compounds thereof can be obtained.

本発明で使用する式(n)の出発物質は、公知化合物で
あるが、以下の参考例の記載に従って合成できるもので
ある。
The starting material of formula (n) used in the present invention is a known compound, but it can be synthesized according to the description in the following reference examples.

以下実施例及び参考例を以て本発明をより詳細に説明す
るが、本発明は実施例に限定されるものではない。
The present invention will be explained in more detail below using Examples and Reference Examples, but the present invention is not limited to the Examples.

参考例1 (2S)−2−(N−t−ブトキシカルボニル)アミノ
−3−(p−メトキシフェニル)プロパツールアセテー
トの合成 N−t−ブトキシカルボニル−p−メトキシ−L−フェ
ニルアラニンメチルエステル1.00 g(3,23鳳
mat)をテトラヒドロフラン(以下THFと略す)5
0mllに溶かした溶液を、水素化リチウムアルミニウ
ム184鳳tc4.8S謙mol)のTHF懸濁液(5
0@ll)中に滴下した。室温で1時間撹拌して後、水
冷下で氷片を加えて過剰の試薬を分解した。硫酸マグネ
シウムを加えて濾過し、濾液を濃縮し、残渣をエーテル
に溶かして、10%酒石酸溶液および水で洗浄した。有
機層を乾燥後濃縮し油状のアルコール体7c+omg(
収率86゜9%)を得た。アルコール体390mt(1
,39m履o1)をピリジン2allに溶かし、無水酢
酸195μff1(2,07mmol)を加えて室温で
3時間撹拌した。メタノールで過剰の試薬を分解後、エ
ーテルおよび水を加えて抽出し、エーテル層を濃縮して
、残渣をシリカゲルカラムクロマトグラフィー(エーテ
ル/ヘキサン(2: l) )で精製して標記化合物4
0(ln(収率91.3%)を無色結晶として得た。
Reference Example 1 Synthesis of (2S)-2-(N-t-butoxycarbonyl)amino-3-(p-methoxyphenyl)propatur acetate N-t-butoxycarbonyl-p-methoxy-L-phenylalanine methyl ester 1. 00 g (3,23 mat) in tetrahydrofuran (hereinafter abbreviated as THF) 5
The solution dissolved in 0 ml was added to a THF suspension (5 mol) of lithium aluminum hydride 184
0@ll). After stirring at room temperature for 1 hour, excess reagent was decomposed by adding ice chips while cooling with water. It was filtered by adding magnesium sulfate, the filtrate was concentrated, the residue was dissolved in ether and washed with 10% tartaric acid solution and water. The organic layer was dried and concentrated to give an oily alcohol 7c+omg (
A yield of 86.9%) was obtained. Alcohol body 390mt (1
, 39mol o1) was dissolved in 2all pyridine, 195μff1 (2.07mmol) of acetic anhydride was added, and the mixture was stirred at room temperature for 3 hours. After decomposing excess reagent with methanol, extraction was performed by adding ether and water, the ether layer was concentrated, and the residue was purified by silica gel column chromatography (ether/hexane (2: l)) to obtain the title compound 4.
0(ln (yield 91.3%)) was obtained as colorless crystals.

性状:無色結晶 融点:98.5〜99.5℃ ’H−NMRスペクトル(l OOMHzS CDCl
3、δpp■): 1.44 (9H,s)、2.10 (3H,s)。
Properties: Colorless crystal Melting point: 98.5-99.5°C 'H-NMR spectrum (l OOMHZS CDCl
3, δpp■): 1.44 (9H, s), 2.10 (3H, s).

2.79 (2H,m)、3.80 (3H,s)。2.79 (2H, m), 3.80 (3H, s).

4.02 (2H,bs)、4.05 (IH,m)。4.02 (2H, bs), 4.05 (IH, m).

4.60 (IH,bs)。4.60 (IH, bs).

6.84 (2H,d、J・10Hz)。6.84 (2H, d, J・10Hz).

7.11 (2H,d、J・IQHz)IRスペクトル
(yes−’): 3364,29B8゜1726.1
694,1262.1246[al  ”: −12,
7° (c・1.00.  CHCILs)参考例2 N−t−ブトキシカルボニル−L−p−メトキシフェニ
ルアラニンメチルエステルの合成N−t−ブトキシカル
ボニル−し−チロシン10.0 g (35,5m +
aol)をエーテル100mAに溶かし、ジアゾメタン
のエーテル溶液を発泡しなくなるまで加えた。反応溶液
を乾燥後、減圧濃縮し、得られた残渣をジメチルホルム
アミド(以下DMFと略す)(200ml)に溶かし、
水冷下−1?大過剰のヨウ化メチルと水素化ナトリウム
1.6g (53,3m 1@I)を加えて、水冷下で
1時間、さらに室温で1時間撹拌した。反応終了後、ニ
ーチルと塩化アンモニウム水溶液を加えて抽出し、エー
テル層を10%クエン酸水溶液および水で洗浄した。硫
酸マグネシウムで乾燥後、減圧濃縮し、残渣をシリカゲ
ルカラムクロマトグラフィー(エーテル/ヘキサン(1
: D )で精製して標記化金物xo、+g(収率94
.7%)を得た。
7.11 (2H, d, J・IQHz) IR spectrum (yes-'): 3364,29B8°1726.1
694,1262.1246 [al ”: -12,
7° (c・1.00.CHCILs) Reference Example 2 Synthesis of N-t-butoxycarbonyl-L-p-methoxyphenylalanine methyl ester N-t-butoxycarbonyl-tyrosine 10.0 g (35,5m +
aol) was dissolved in 100 mA of ether, and an ethereal solution of diazomethane was added until no more foaming occurred. After drying the reaction solution, it was concentrated under reduced pressure, and the resulting residue was dissolved in dimethylformamide (hereinafter abbreviated as DMF) (200 ml),
Under water cooling -1? A large excess of methyl iodide and 1.6 g (53.3 m 1@I) of sodium hydride were added, and the mixture was stirred for 1 hour under water cooling and then for 1 hour at room temperature. After the reaction was completed, nityl and ammonium chloride aqueous solution were added for extraction, and the ether layer was washed with 10% citric acid aqueous solution and water. After drying over magnesium sulfate, it was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (ether/hexane (1
:D) to obtain the labeled metal compound xo, +g (yield 94
.. 7%).

性状:無色の油状物 ’H−NMRスペクトル(100M Hz SCD C
1s、δppm) : 1.43 (9B、s)。
Properties: Colorless oil 'H-NMR spectrum (100MHz SCD C
1s, δppm): 1.43 (9B, s).

3.01 (2H,d、J寡6Hz)。3.01 (2H, d, J low 6Hz).

3.71 (3H,S)、3.78 (3H,S)。3.71 (3H, S), 3.78 (3H, S).

4.52 (IH,m)、4.90 (IH,b)。4.52 (IH, m), 4.90 (IH, b).

6.80 (2B、d、JiHz)。6.80 (2B, d, JiHz).

7.02 (2H,d、J−9H2) IRスペクトル(y cm−つ :3452,2984
゜1748.1718,1252.1218[gl ”
ニー27.1’ (c・2.oO,CHCL)参考例3 N−t−ブトキシカルボニル−2−(p−メトキシフェ
ニル)エチルアミンの合成 チラミン30 (law (2,18iz ido+)
をメタノール10鳳lに溶かしジーt−ブチル−ジカル
ポキシラート5ooxx(2,sxm++ul)を加え
て16時間撹拌した。反応溶液を濃縮し、酢酸エチルお
よび水を加えて抽出した。有機層を10%クエン酸水溶
液および水で洗浄後、乾燥し、減圧濃縮し残液をシリカ
ゲルカラムクロマトグラフィー(エーテル/ヘキサン(
3: 1) )で精製してN−t−ブトキシカルボニル
チラミン4961g(収率95゜9%)を得た。
7.02 (2H, d, J-9H2) IR spectrum (y cm-t: 3452, 2984
゜1748.1718, 1252.1218 [gl ”
27.1' (c・2.oO, CHCL) Reference Example 3 Synthesis of Nt-butoxycarbonyl-2-(p-methoxyphenyl)ethylamine Tyramine 30 (law (2,18iz ido+)
was dissolved in 10 liters of methanol, 5ooxx (2, sxm++ ul) of di-t-butyl-dicarpoxylate was added, and the mixture was stirred for 16 hours. The reaction solution was concentrated and extracted with ethyl acetate and water. The organic layer was washed with 10% citric acid aqueous solution and water, dried, concentrated under reduced pressure, and the remaining liquid was purified by silica gel column chromatography (ether/hexane).
3:1)) to obtain 4961 g of N-t-butoxycarbonyltyramine (yield: 95.9%).

性状:無色結晶(エーテル/ヘキサンから再結晶)この
N−t−ブトキンカルボニルチラミン200B (0,
843m mol)をDMF5鳳ffiに溶かして大過
剰のヨウ化メチル、水素化ナトリウム3o諺g(1,0
1mmol)を加えて室温で1時間撹拌した。
Properties: Colorless crystals (recrystallized from ether/hexane) This Nt-butquine carbonyltyramine 200B (0,
Dissolve 843 m mol) in DMF 5 ffi to obtain a large excess of methyl iodide and 30 g of sodium hydride (1,0
1 mmol) was added thereto, and the mixture was stirred at room temperature for 1 hour.

塩化アンモニウム水溶液および酢酸エチルを加えて抽出
し、有機層を水洗、乾燥後、減圧濃縮し残渣をシリカゲ
ルカラムクロマトグラフィー(エーテル/ヘキサン(3
: l) )で精製して標記化合物203mg (95
,8%)を得た。
Extraction was performed by adding an aqueous ammonium chloride solution and ethyl acetate, and the organic layer was washed with water, dried, concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (ether/hexane (3
: l)) to give 203 mg of the title compound (95
, 8%).

性状:無色結晶 融点:58.5〜59.0℃ ’H−NMRスペクトル(100MHzS CDCl5
、δppm) : 1.443 ((l)I、s)。
Properties: Colorless crystal Melting point: 58.5-59.0°C 'H-NMR spectrum (100MHzS CDCl5
, δppm): 1.443 ((l)I,s).

2.74 (2H,t、J・7Hz)。2.74 (2H, t, J・7Hz).

3.35 (2H,q、J・7Hz)。3.35 (2H, q, J・7Hz).

3.80 (3H,S)、4.50 (IH,bs)。3.80 (3H, S), 4.50 (IH, bs).

6.84 (2H,d、J−8H2)。6.84 (2H, d, J-8H2).

7.12 (2H,d、J・8Hz) IRスペクトル(ycm−’): 3368,2996
゜16B2. 1532. 1516. 1292参考
例4 (2S)−2−(t−ブトキシカルボニル)アミ’3−
(3,4−ジメトキシフェニル)プロパツールアセテー
トの合成 O L−ドーパ500腸g(2,54飄飄◎l)を水とジオ
キサン(l:l)混合液10mff1に溶かし、0.5
N水酸化ナトリウム水溶液およびジーt−プチルージ力
ルポキシラートを加えて16時間撹拌した。
7.12 (2H, d, J・8Hz) IR spectrum (ycm-'): 3368,2996
゜16B2. 1532. 1516. 1292 Reference Example 4 (2S)-2-(t-butoxycarbonyl)ami'3-
Synthesis of (3,4-dimethoxyphenyl) propazole acetate 500 g (2,54 ◎l) of L-dopa was dissolved in 10 mff1 of a mixture of water and dioxane (l:l), and 0.5
N aqueous sodium hydroxide solution and di-t-butyl hydroxylate were added, and the mixture was stirred for 16 hours.

反応溶液をエーテルで洗浄し、水層をIN塩酸でpH2
にして酢酸エチルで抽出した。有機層を飽和食塩水で洗
浄し、乾燥後、減圧濃縮した。残渣をエーテル5@1に
溶かしジアゾメタンのエーテル溶液を発泡が止まるまで
加えた。反応溶液を乾燥後、減圧濃縮しDMF7mAに
溶かして水冷下で過剰のヨウ化メチルと水素化ナトリウ
ム95sB(3,18m mol)を加え、室温で30
分撹拌した。
The reaction solution was washed with ether, and the aqueous layer was adjusted to pH 2 with IN hydrochloric acid.
and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried, and concentrated under reduced pressure. The residue was dissolved in ether 5@1 and an ethereal solution of diazomethane was added until bubbling stopped. After drying, the reaction solution was concentrated under reduced pressure, dissolved in DMF 7 mA, and added with excess methyl iodide and 95 sB (3.18 mmol) of sodium hydride under water cooling.
Stir for 1 minute.

エーテルと塩化アンモニウム水溶液を加えて抽出した。Ether and aqueous ammonium chloride solution were added for extraction.

エーテル層を水洗、乾燥し、減圧濃縮し、残渣をTHF
(5mg)に溶かした。これを水素化リチウムアルミニ
ウム(83mt)のTHF懸濁液(5mff1)中に0
°Cで滴下して後、室温で30分撹拌した。再び氷冷し
、氷片を加えて過剰の試薬を分解した後、エーテルで希
釈し、硫酸マグネシウムを加えて濾過した。濾液をIN
塩酸および水で洗浄後、乾燥し、減圧濃縮した。残渣を
ピリジン3mQに溶かし、無水酢酸500μl加えて1
6時間撹拌した。メタノールで過剰の試薬を分解後、減
圧濃縮し、残渣をシリカゲルカラムクロマトグラフィー
(エーテル/ヘキサン(1: 1) )で精製して標記
化合物268B(収率31.2%)を得Iこ 。
The ether layer was washed with water, dried, concentrated under reduced pressure, and the residue was dissolved in THF.
(5 mg). This was added to a THF suspension (5mff1) of lithium aluminum hydride (83mt).
After the dropwise addition at °C, the mixture was stirred at room temperature for 30 minutes. The mixture was cooled on ice again, ice chips were added to decompose excess reagent, diluted with ether, magnesium sulfate was added, and the mixture was filtered. Insert the filtrate
After washing with hydrochloric acid and water, it was dried and concentrated under reduced pressure. Dissolve the residue in 3 mQ of pyridine, add 500 μl of acetic anhydride, and
Stirred for 6 hours. After decomposing excess reagent with methanol, it was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (ether/hexane (1:1)) to obtain the title compound 268B (yield 31.2%).

性状:無色結晶 融点:80〜83°C ’H−NMRスペクトル(100MH2,CDCl3、
δppm) : 1.44 (9H,s)、2.09 (3H,s)。
Properties: Colorless crystal Melting point: 80-83°C 'H-NMR spectrum (100MH2, CDCl3,
δppm): 1.44 (9H, s), 2.09 (3H, s).

2.78 (2H,m)、3.87 (6H,s)。2.78 (2H, m), 3.87 (6H, s).

4.04 (2H,s)。4.04 (2H, s).

3.9−4.2 (IH,m)。3.9-4.2 (IH, m).

4.63 (IH,b)。4.63 (IH, b).

6.6−7.0 (3H,m) IRスペクトル(y cm−’ )  : 3372 
+  2984 +1746.1714.1242 [al ”ニー8.2° (cml、oo、CHCl5
)実施例1 (23,3R)−2−(N−t−ブトキシカルボニル)
−3−(4−メトキシフェニル)セリンの製造 (1)(4R,5R)−4−アセトキシメチル−5−(
4−メトキシフェニル)−2−オキサゾリトンの合成 参考例1の化合物(2S) −2−(N−t−ブトキシ
カルボニル)アミノ−3−(p−メトキシフェニル)グ
ロパノールアセテート200醜!(0゜618鳳園o1
)のア七トニトリル溶液(5鳳l)に過硫酸カリウム3
34鳳((1,24m■・l)を含む水溶液(5I)と
硫酸銅20at (0,124m m@l)を含む水溶
液1鵬直を加え、窒素気流下、70”Oで1.5時間撹
拌した。反応液を酢酸エチルで抽出し、有機層を水洗、
乾燥後、濃縮し、シリカゲルクロマトグラフィー(エー
テルにて溶出)で精製して標記化合物114B(収率6
9.2%)を得た。
6.6-7.0 (3H, m) IR spectrum (y cm-'): 3372
+ 2984 +1746.1714.1242 [al “knee 8.2° (cml, oo, CHCl5
) Example 1 (23,3R)-2-(N-t-butoxycarbonyl)
Production of -3-(4-methoxyphenyl)serine (1) (4R,5R)-4-acetoxymethyl-5-(
Synthesis of 4-methoxyphenyl)-2-oxazolitone Compound (2S) of Reference Example 1 -2-(N-t-butoxycarbonyl)amino-3-(p-methoxyphenyl)glopanol acetate 200 Ugly! (0゜618 Hoen o1
) of potassium persulfate (5 liters)
An aqueous solution (5I) containing 34 tungsten ((1,24 ml) and an aqueous solution 1 sulfuric acid containing 20 at (0,124 m m@l) were added, and the mixture was heated at 70"O under a nitrogen stream for 1.5 hours. The reaction solution was extracted with ethyl acetate, and the organic layer was washed with water.
After drying, it was concentrated and purified by silica gel chromatography (eluting with ether) to obtain the title compound 114B (yield: 6
9.2%).

性状:無色結晶 融点:99.5〜100.0℃ ’H−NMRスペ’) トル(360MHz、CDC1
5、app醜) : 2.11 (3H,S)、3.83 (3H,S)。
Properties: Colorless crystal Melting point: 99.5-100.0℃ 'H-NMR spectrum') (360MHz, CDC1
5, app ugly): 2.11 (3H,S), 3.83 (3H,S).

3.97 (IH,dddd、J−1,0,4,2゜5
.9,6.3Hz)。
3.97 (IH, dddd, J-1, 0, 4, 2゜5
.. 9,6.3Hz).

4.12 (IH,dd、J@5.9,11.6Hz)
4.12 (IH, dd, [email protected], 11.6Hz)
.

4.33 (IH,dd、J・4.2.11.6Hz)
4.33 (IH, dd, J・4.2.11.6Hz)
.

5.22 (IH,d、J□6.3Hz)。5.22 (IH, d, J□6.3Hz).

5.79 (IH,bs)。5.79 (IH, bs).

6.94 (2H,d、J諺9Hz)。6.94 (2H, d, J proverb 9Hz).

7.30 (2H,d、J・9Hz) IRスペクトル(ycll−’): 3316,294
8゜1764.1744.1252 [ir] ”: +58.8 ’ (c−1,00,C
HCl5)(2)(2R,3R)−2−(N−t−ブト
キシカルボニル)アミノ−3−(p−メトキシフェニル
)−1,3−プロパンジオールの合成0〜 H 上記(1)の化合物(4R,SR) −4−アセトキシ
メチル−5−(4−メトキシフェニル)−2−オキサゾ
リドン200at (0,754m mol)のエタノ
ール溶液(5鳳1)に0.5N水酸化バリウム水溶液4
.5鳳1を加えて80℃で4時間撹拌した。希硫酸で中
和後、沈澱を濾去し、濾液を炭酸水素ナトリウムでpH
9にした。ジーt−プチル−ジカルポナート20 oJ
i (o、s 7m mol)とジオキサン3鳳iを加
えて室温で16時間撹拌した。
7.30 (2H, d, J・9Hz) IR spectrum (ycll-'): 3316,294
8゜1764.1744.1252 [ir] ”: +58.8' (c-1,00,C
HCl5) (2) Synthesis of (2R,3R)-2-(N-t-butoxycarbonyl)amino-3-(p-methoxyphenyl)-1,3-propanediol 0-H Compound (1) above ( 4R, SR) -4-acetoxymethyl-5-(4-methoxyphenyl)-2-oxazolidone 200 at (0,754 mmol) in ethanol solution (5 1) 0.5N barium hydroxide aqueous solution 4
.. 5 and 1 were added, and the mixture was stirred at 80°C for 4 hours. After neutralizing with dilute sulfuric acid, the precipitate was filtered off, and the filtrate was adjusted to pH with sodium hydrogen carbonate.
I made it 9. Di-t-butyl-dicarponate 20 oJ
7 mmol of dioxane and dioxane were added, and the mixture was stirred at room temperature for 16 hours.

酢酸エチルで抽出後、有機層を水洗、乾燥、減圧濃縮し
、シリカゲルカラムクロマトグラフィーにより精製して
標記化合物191mg(収率66%)を得た。
After extraction with ethyl acetate, the organic layer was washed with water, dried, concentrated under reduced pressure, and purified by silica gel column chromatography to obtain 191 mg (yield: 66%) of the title compound.

性状:無色の油状物 ’H−NMRスペクトル(100M Hz 、 CD 
Cl s、δ pp鳳) : 1.37 (9H,s)、2.42 (IH,bs)。
Properties: Colorless oil 'H-NMR spectrum (100MHz, CD
Cl s, δ pp Otori): 1.37 (9H, s), 2.42 (IH, bs).

3.65−3.85 (3H)。3.65-3.85 (3H).

3.79 (3H,s)。3.79 (3H, s).

4.90 (IH,d、J・4Hz)。4.90 (IH, d, J, 4Hz).

5.1a (iH,bs)。5.1a (iH, bs).

6.86 (2H,d、J尊9Hz)。6.86 (2H, d, Json 9Hz).

7.28 (28,d、JIHz) (3)(2S、3R)−N−t−ブトキシカルボニル−
3−(4−メトキシフェニル)セリンの合成 0H 二酸化白金30ICを水4mlに懸濁し、水素雰囲気下
で15分撹拌した後、上記(2)の化合物(2R,3R
) −2−(N−t−ブトキシカルボニル)アミノ−3
−(p−メトキシフェニル)−1,3=プロパンジオ一
ル50鳳g(0,168m1拳■)のジオキサン溶液(
4all)を加え、55℃で酸素ガスを吹き込みながら
17時間撹拌した。触媒を濾去し、濾液に炭酸水素ナト
リウムを加えてエーテルで洗浄した。水層をIN塩酸で
pH1にし、酢酸エチルで抽出し、有機層を水洗、乾燥
後、減圧濃縮して標記化合物24■g(収率46%)を
油状物として得た。
7.28 (28, d, JIHz) (3) (2S, 3R)-N-t-butoxycarbonyl-
Synthesis of 3-(4-methoxyphenyl)serine After suspending 0H platinum dioxide 30IC in 4 ml of water and stirring under hydrogen atmosphere for 15 minutes, the compound (2R, 3R
) -2-(N-t-butoxycarbonyl)amino-3
-(p-Methoxyphenyl)-1,3=Dioxane solution of 50 g (0,168 ml) of propanediol (
4all) was added thereto, and the mixture was stirred at 55° C. for 17 hours while blowing oxygen gas. The catalyst was removed by filtration, sodium hydrogen carbonate was added to the filtrate, and the mixture was washed with ether. The aqueous layer was adjusted to pH 1 with IN hydrochloric acid, extracted with ethyl acetate, and the organic layer was washed with water, dried, and concentrated under reduced pressure to obtain 24 g (yield: 46%) of the title compound as an oil.

性状:無色の油状物 ’H−NMRスペクトル(100MHz、CDCDC1
51app: 1.32 (9H,S)、3.78 (3H,8)。
Properties: Colorless oil 'H-NMR spectrum (100MHz, CDCDC1
51app: 1.32 (9H, S), 3.78 (3H, 8).

4.53 (LH,d、J−8Hz)。4.53 (LH, d, J-8Hz).

5.29 (IH,d、J・2Hz)。5.29 (IH, d, J・2Hz).

5.47 (IH,d、J・8Hz)。5.47 (IH, d, J, 8Hz).

6.42 (2H,bs)。6.42 (2H, bs).

6.83 (2H,d、JII9Hz)。6.83 (2H, d, JII 9Hz).

7.27 (2H,d、J・9Hz) IRスペクトル(y cm−リ :3404,2984
゜1696.1250 [a] ”ニー15.0” (cO,50,CHCl3
)実施例2 N−t−ブトキシカルボニルーオクトバミンの製造 (1)5− (4−メトキシフェニル)−2−オキサシ
リドンの合成 参考例3の化合物N−t−ブトキシカルボニル−2−(
p−メトキシフェニル)エチルアミン5031! (2
,0m mol)のアセトニトリル溶液(lo@1l)
i:過硫酸カリウム1.08g(4,0rm mol)
 ヲ含む水溶液(10mDとfEra銅64−g(0,
4m@ol)を含む水溶液3mff1を加え、窒素気流
下で脱気した。55°Cで4時間撹拌した後、反応液を
酢酸エチルで抽出した。有機層を水洗、乾燥後、濃縮し
、シリカゲルクロマトグラフィー(エーテル及び酢酸エ
チルにて溶出)で精製して標記化合物288111(収
率74.7%)を得た。
7.27 (2H, d, J・9Hz) IR spectrum (y cm-li: 3404, 2984
゜1696.1250 [a] "Knee 15.0" (cO,50,CHCl3
) Example 2 Production of N-t-butoxycarbonyl-octobamine (1) Synthesis of 5-(4-methoxyphenyl)-2-oxacylidone Compound of Reference Example 3 N-t-butoxycarbonyl-2-(
p-methoxyphenyl)ethylamine 5031! (2
,0m mol) in acetonitrile solution (lo@1l)
i: Potassium persulfate 1.08g (4.0rm mol)
An aqueous solution containing (10 mD and fEra copper 64-g (0,
3mff1 of an aqueous solution containing 4m@ol) was added and degassed under a nitrogen stream. After stirring at 55°C for 4 hours, the reaction solution was extracted with ethyl acetate. The organic layer was washed with water, dried, concentrated, and purified by silica gel chromatography (eluted with ether and ethyl acetate) to obtain the title compound 288111 (yield 74.7%).

性状:無色結晶 融点:116.O〜116.5℃ ’H−NMRスペクトル(100MHz −CD Ci
s1δ ppm) : 3.54 (1)1.ddd、J−1,8,8,8Hz
)。
Properties: Colorless crystal Melting point: 116. O~116.5℃'H-NMR spectrum (100MHz-CD Ci
s1δ ppm): 3.54 (1)1. ddd, J-1,8,8,8Hz
).

3.83 (31−1,S)。3.83 (31-1, S).

3.92 (IH,ddd、J・1,8,8.8Hz)
3.92 (IH, ddd, J・1,8,8.8Hz)
.

5.56 (11(、t、J−8H2)。5.56 (11(, t, J-8H2).

5.90 (IH,b)。5.90 (IH, b).

6.90 (2H,d、JiHz)。6.90 (2H, d, JiHz).

7.30 (2H,d、JiHz) IRスペクトル(yes−’):3268,3164゜
1756.1724.1254 (2)l−(4−メトキシフェニル)−2−(N−t−
ブトキシカルボニル)アミノエタノールの合成 0H 上記(1)の化合物5−(4−メトキシフェニル)−2
−オキサシリドン200mg(1,04鳳朧o1)のエ
タノール溶液(5朧&)に0.5N水酸化バリウム水溶
液4.2量直を加えて70℃で5時間撹拌した。希硫酸
で中和後、沈澱を濾去し、濾液を炭酸水素ナトリウムで
pH9にした。ジーt−ブチル−ジカルポナート360
μl(1,57重鳳・l)とジオキサン5mlを加えて
室温で16時間撹拌した。酢酸エチルで抽出後、有機層
を水洗、乾燥、減圧濃縮し、シリカゲルカラムクロマト
グラフ(−(エーテル/ヘキサン(3: l)で溶出)
により精製して標記化合物227B(収率82%)を得
た。
7.30 (2H, d, JiHz) IR spectrum (yes-'): 3268, 3164° 1756.1724.1254 (2) l-(4-methoxyphenyl)-2-(N-t-
Synthesis of butoxycarbonyl)aminoethanol 0H Compound 5-(4-methoxyphenyl)-2 of (1) above
- To an ethanol solution (5 Oboro) of 200 mg (1,04 Oboro o1) of oxacilidone was added 4.2 volumes of a 0.5 N barium hydroxide aqueous solution, and the mixture was stirred at 70°C for 5 hours. After neutralization with dilute sulfuric acid, the precipitate was filtered off, and the filtrate was adjusted to pH 9 with sodium hydrogen carbonate. Di-t-butyl dicarponate 360
μl (1,57 liters) and 5 ml of dioxane were added and stirred at room temperature for 16 hours. After extraction with ethyl acetate, the organic layer was washed with water, dried, concentrated under reduced pressure, and subjected to silica gel column chromatography (-(eluted with ether/hexane (3: l)).
Purification was performed to obtain the title compound 227B (yield 82%).

性状:無色結晶 ’H−NMRスペクトル(100MHz、CDC15、
δpp■): 1.44 (9H,s)。
Properties: Colorless crystal 'H-NMR spectrum (100MHz, CDC15,
δpp■): 1.44 (9H, s).

2.50 (IH,bs)。2.50 (IH, bs).

3.15−3.45 (2H,m)。3.15-3.45 (2H, m).

3.78 (3H,s)。3.78 (3H, s).

4.74 (IH,dd、J□4,8Hz)。4.74 (IH, dd, J□4,8Hz).

4.90 (IH,b)。4.90 (IH, b).

6.85 (2H,d、J・9Hz)。6.85 (2H, d, J・9Hz).

7.25 (2H,d、J□9Hz) IRスペクトル(yc+a−’): 3424.298
0゜(3)N−t−ブトキシ力ルポニルーオクトパミン
の合成 上記(2)の化合物1−(4−メトキシフェニル)−2
−(N−t−7’トキシカルボニル)アミノエタノール
140鳳r(0,542mm・1)の塩化メチレン溶液
(15ml)に−10℃の水冷下で三臭化ホウ素の1M
塩化メチレン溶液(2,6mDを加えた。−10℃で1
時間撹拌後、室温に戻しN。
7.25 (2H, d, J□9Hz) IR spectrum (yc+a-'): 3424.298
0゜(3) Synthesis of N-t-butoxyluponyl-octopamine Compound 1-(4-methoxyphenyl)-2 of above (2)
-(N-t-7'toxycarbonyl)aminoethanol 140 ml (0,542 mm 1) in methylene chloride solution (15 ml) under water cooling at -10°C with 1M boron tribromide.
Methylene chloride solution (2.6 mD was added. 1 at -10 °C
After stirring for an hour, return to room temperature and add N.

N−ジメチルアセトアミドを白濁が無くなるまで(約1
 ml)加えて、さらに2時間撹拌した。反応終了後塩
化アンモニウム水溶液とエーテルを加えた。水層を炭酸
水素ナトリウムでpH9に調整し、大過剰のジーt−プ
チルージカルボナートとジオキサンを加えて室温で16
時間撹拌した。酢酸エチルで抽出し、有機層を水洗、乾
燥後に減圧濃縮した。残渣をシリカゲルカラムクロマト
グラフィー(エーテルで溶出)で精製して標記化合物4
5重g(収率34%)を得た。
Add N-dimethylacetamide until the cloudiness disappears (approximately 1
ml) and further stirred for 2 hours. After the reaction was completed, an aqueous ammonium chloride solution and ether were added. The aqueous layer was adjusted to pH 9 with sodium hydrogen carbonate, and a large excess of di-t-butyl-dicarbonate and dioxane were added, and the mixture was heated to 16 mL at room temperature.
Stir for hours. The organic layer was extracted with ethyl acetate, washed with water, dried, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluting with ether) to obtain the title compound 4.
5 g (yield: 34%) was obtained.

性状:無色結晶 融点=144〜145℃ ’H−NMRスペクトル(100MHz、CD30DS
 a ppm)  : 1.44 (9H,s)。
Properties: Colorless crystal Melting point = 144-145°C 'H-NMR spectrum (100MHz, CD30DS
a ppm): 1.44 (9H, s).

3.1−3.3 (2H,m)。3.1-3.3 (2H, m).

4.58 (IH,t、J・6Hz)。4.58 (IH, t, J・6Hz).

6.74 (2H,d、J−9H2)。6.74 (2H, d, J-9H2).

7.16 (2H,d、J・9Hz) !Rスペクトル(y c+s−つ :3416,328
0゜2980.1650 実施例3 (2S、3R)−N−t−ブトキシカルボニル−3−(
3,4−ジメトキシフェニル)セリンの製(1)(4R
,5R)−4−アセトキシメチル−5−(3,4−ジメ
トキシ)フェニル−2−オキサゾリドンの合成 参考例4の化合物(2S) −2−(t−ブトキシカル
ボニル)−アミノ−3−(3,4−ジメトキシフェニル
)プロパツールアセテート200膳g(0,566mm
ol)のアセトニトリル溶液(5at)に過硫酸カリウ
ム306鳳g(1−13鳳鳳・l)を含む水溶液(5鳳
0と硫酸鋼18鳳((0,113mno 1)を含む水
溶液1mlを加え、窒素気流下で脱気した。70℃で5
時間撹拌した後、反応液を酢酸エチルで抽出した。有機
層を水洗、乾燥後、濃縮し、シリカゲルクロマトグラフ
ィー(エーテルおよび酢酸エチルにて溶出)で精製して
標記化合物73鳳g(収率43.5%)を得た。
7.16 (2H, d, J・9Hz)! R spectrum (yc+s-t:3416,328
0°2980.1650 Example 3 (2S,3R)-Nt-butoxycarbonyl-3-(
Production of 3,4-dimethoxyphenyl)serine (1) (4R
,5R) -4-acetoxymethyl-5-(3,4-dimethoxy)phenyl-2-oxazolidone Compound (2S) of Reference Example 4 -2-(t-butoxycarbonyl)-amino-3-(3, 4-dimethoxyphenyl) propatool acetate 200 servings (0,566 mm
To the acetonitrile solution (5at) of potassium persulfate, add 1 ml of an aqueous solution containing 306 g (1-13 mno 1) of potassium persulfate (5 0 and 18 ml of sulfuric acid steel (0,113 mno 1), Degassed under nitrogen stream. 5 at 70°C.
After stirring for an hour, the reaction solution was extracted with ethyl acetate. The organic layer was washed with water, dried, concentrated, and purified by silica gel chromatography (eluted with ether and ethyl acetate) to obtain 73 g (yield: 43.5%) of the title compound.

性状:無色の油状物 ’H−NMRスペクトル(100MHz、CDCl5−
δppm) : 2.12 (3H,s)、3.92 (6H,s)。
Properties: Colorless oil 'H-NMR spectrum (100MHz, CDCl5-
δppm): 2.12 (3H, s), 3.92 (6H, s).

3.8−4.1 (IH,m)。3.8-4.1 (IH, m).

4.04−4.25 (2)1.m)。4.04-4.25 (2) 1. m).

5.22 (IH,d、J寓6Hz)。5.22 (IH, d, J 6Hz).

6.21 (IH,s)、6.89 (3H,5)IR
スペクトル(y cm−つ :3352,3023゜1
754.1266.1238 [g] !D’:+43.4” (c−1,oO,CH
Cら)(2)上記(1)で得たオキサゾリドンは実施例
1または実施例2の方法により容易に加水分解され(2
S、3R)−N−t−ブトキシカルボニル−3−(3,
4−ジメトキシフェニル)セリンが得られた。
6.21 (IH,s), 6.89 (3H,5)IR
Spectrum (ycm-t:3352,3023゜1
754.1266.1238 [g]! D': +43.4" (c-1, oO, CH
C et al.) (2) The oxazolidone obtained in (1) above is easily hydrolyzed by the method of Example 1 or Example 2 (2)
S, 3R)-N-t-butoxycarbonyl-3-(3,
4-dimethoxyphenyl)serine was obtained.

実施例4 (25,3R)−N−t−ブトキシカルボニル−3−(
4−メトキシフェニル)セリンの製造(1)(4S、S
R) −4−メトキシカルボニル−5−(4−メトキシ
)フェニル−2−オキサゾリドンの合成 参考例2の化合物N−t−ブトキシカルボニル−1,−
p−メトキシフェニルアラニンメチルエステル230■
g(0,744鳳鳳・l)のアセトニトリル溶液(5m
l)に過硫酸カリウム385鳳g(1゜42■鳳・l)
を含む水溶液(5ti)と硫酸鋼23鳳g(0,142
鳳鳳・I)を含む水溶液1mlを加え、窒素気流下で脱
気した。70”Oで2時間撹拌した後、反応液をエーテ
ルで抽出した。エーテル層を水洗、乾燥後、濃縮し、シ
リカゲルクロマトグラフィー(エーテルにて溶出)で精
製して標記化合物69.9鳳g(収率39.1%)を得
た。
Example 4 (25,3R)-Nt-butoxycarbonyl-3-(
Production of 4-methoxyphenyl)serine (1) (4S,S
R) Synthesis of -4-methoxycarbonyl-5-(4-methoxy)phenyl-2-oxazolidone Compound N-t-butoxycarbonyl-1,- of Reference Example 2
p-methoxyphenylalanine methyl ester 230■
acetonitrile solution (5 m
l) 385g of potassium persulfate (1°42cm/l)
(5ti) and sulfuric acid steel 23g (0,142g)
1 ml of an aqueous solution containing Hoho I) was added, and the mixture was degassed under a nitrogen stream. After stirring at 70"O for 2 hours, the reaction solution was extracted with ether. The ether layer was washed with water, dried, concentrated, and purified by silica gel chromatography (eluted with ether) to yield 69.9 g of the title compound ( A yield of 39.1%) was obtained.

性状:無色結晶 融点:102.0−102.5℃ ’H−NMRスペクトル(100MHzSCDCIs。Properties: Colorless crystal Melting point: 102.0-102.5℃ 'H-NMR spectrum (100MHz SCDCIs.

app鳳) : 3.54 (3H,s)、3.86 (3B、s)。app Otori): 3.54 (3H, s), 3.86 (3B, s).

4.30 (IH,d、J宿6Hz)。4.30 (IH, d, J Inn 6Hz).

5.58 (IH,d、J・6Hz)。5.58 (IH, d, J, 6Hz).

6.42 (IH,bs)。6.42 (IH, bs).

6.92 (2H,d、J婁9Hz)。6.92 (2H, d, J 9Hz).

7.34 (2H,d、J−9Hz) IRスペクトル(yes−’): 3268,1758
゜1280.1228 [g] ”: +80.6@(c−1,03,CHCl
5)(2)上記(1)で得たオキサゾリドンはカルポキ
シル基を還元してアルコールとした後、実施例1または
実施例2の方法により加水分解後、再び酸化することに
より容易に(23,3R)−N−t−ブトキシカルボニ
ル−3−(4−メトキシフェニル)セリンを得ることが
できる。
7.34 (2H, d, J-9Hz) IR spectrum (yes-'): 3268,1758
゜1280.1228 [g] ”: +80.6@(c-1,03,CHCl
(23,3R )-Nt-butoxycarbonyl-3-(4-methoxyphenyl)serine can be obtained.

(発明の効果) 本発明の方法を使用することにより、チロシン誘導体の
β位に立体特異的に水酸基を導入することができる。得
られたβ−ヒドロキシチロシン類は、β位に水酸基を持
ちかつ立体特異性を有するので、種々の生理活性を持つ
ことが知られているβ−ヒドロキシフェネチルアミン類
化合物の合成出発物質として大変有益な化合物である。
(Effects of the Invention) By using the method of the present invention, a hydroxyl group can be stereospecifically introduced into the β-position of a tyrosine derivative. The obtained β-hydroxytyrosines have a hydroxyl group at the β-position and have stereospecificity, so they are very useful as starting materials for the synthesis of β-hydroxyphenethylamine compounds, which are known to have various physiological activities. It is a compound.

手  続  補  正  書 昭和63年4月22日 1、事件の表示 昭和63年特許願PjS55359号 2、発明の名称 β−ヒドロキシ7エネチルアミン類の合成法3、補−正
をする者 事件との関係 特許出願人 住所 名称 (190)サントリー株式会社 4、代 理 人 5、補正の対象 (別紙) (1)[特許請求の範囲]を次のとおり補正する。
Procedures Amendment Document April 22, 1988 1. Indication of the case 1988 Patent Application PjS55359 2. Name of the invention Method for synthesizing β-hydroxy 7enethylamines 3. Person making the amendment Relationship with the case Patent applicant address name (190) Suntory Ltd. 4, Agent 5, Subject of amendment (attached sheet) (1) [Scope of claims] is amended as follows.

「 下記の一般式(II): に1 (式中 R1は低級アルキル基、低級アルコキシカルボ
ニル基、アシルオキシメチル基または水素原子であり:
R2は水素原子または低級アルキル基であり、R3は低
級アルキル基であり:Xは水素原子、低級アルキル基、
低級アルコキシ基またはハロゲン原子であり:nは1ま
たは2である)で表されるフェネチルアミン誘導体に硫
酸銅、塩化鉄(Ill)、硫酸鉄(I[[)もしくは酢
酸銅及び過硫酸カリウムもしくは四酢酸鉛を作用させて
一般式(): (式中、R1,R2、R3、X及びnは前記の定義と同
じである)で表される環状カルバメートとし、続いて、
この式(III)の化合物をアルカリ加水分解すること
により一般式(I): H (式中、−盈2−1R3、R1、X及びnは前記の定義
と同じである)で表されるβ位にヒドロキシ基を有する
フェネチルアミン誘導体を合成する方法。」(2)明細
書の記載を次のとおり補正する。
"The following general formula (II): 1 (wherein R1 is a lower alkyl group, a lower alkoxycarbonyl group, an acyloxymethyl group, or a hydrogen atom:
R2 is a hydrogen atom or a lower alkyl group, R3 is a lower alkyl group; X is a hydrogen atom, a lower alkyl group,
copper sulfate, iron chloride (Ill), iron sulfate (I [[) or copper acetate and potassium persulfate or tetraacetic acid]. A cyclic carbamate represented by the general formula (): (wherein R1, R2, R3, X and n are the same as defined above) by the action of lead, and then,
By alkaline hydrolysis of the compound of formula (III), β represented by the general formula (I): H (wherein -R, R, X and n are the same as defined above) A method for synthesizing a phenethylamine derivative having a hydroxy group at the position. (2) The statement in the description is amended as follows.

頁   行      誤          正目 
  下!   −H,l@      −t17.l’
34   11   3.54(311,S)    
3.1!(3H,S)以   上
Page line error correct
under! -H,l@-t17. l'
34 11 3.54 (311,S)
3.1! (3H,S) or more

Claims (1)

【特許請求の範囲】 下記の一般式(II): ▲数式、化学式、表等があります▼(II) (式中、R^1は低級アルキル基、低級アルコキシカル
ボニル基、アシルオキシメチル基または水素原子であり
;R^2は水素原子または低級アルキル基であり;R^
3は低級アルキル基であり;Xは水素原子、低級アルキ
ル基、低級アルコキシ基またはハロゲン原子であり;n
は1または2である)で表されるフェネチルアミン誘導
体に硫酸銅、塩化鉄(III)、硫酸鉄(III)もしくは酢
酸銅及び過硫酸カリウムもしくは四酢酸鉛を作用させて
一般式(III): ▲数式、化学式、表等があります▼(III) (式中、R^1、R^2、R^3、X及びnは前記の定
義と同じである)で表される環状カルバメートとし、続
いて、この式(III)の化合物をアルカリ加水分解する
ことにより一般式( I ): ▲数式、化学式、表等があります▼( I ) (式中、R^1R^1、R^2、R^3、X及びnは前
記の定義と同じである)で表されるβ位にヒドロキシ基
を有するフェネチルアミン誘導体を合成する方法。
[Claims] The following general formula (II): ▲There are mathematical formulas, chemical formulas, tables, etc.▼(II) (In the formula, R^1 is a lower alkyl group, a lower alkoxycarbonyl group, an acyloxymethyl group, or a hydrogen atom. and R^2 is a hydrogen atom or a lower alkyl group; R^
3 is a lower alkyl group; X is a hydrogen atom, a lower alkyl group, a lower alkoxy group, or a halogen atom; n
is 1 or 2) is reacted with copper sulfate, iron (III) chloride, iron (III) sulfate, copper acetate, and potassium persulfate or lead tetraacetate to obtain the general formula (III): ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼(III) (In the formula, R^1, R^2, R^3, X and n are the same as the above definitions) cyclic carbamate, followed by By alkaline hydrolysis of the compound of formula (III), the general formula (I): ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) (In the formula, R^1R^1, R^2, R^ 3. A method for synthesizing a phenethylamine derivative having a hydroxy group at the β-position represented by (X and n are the same as defined above).
JP5535988A 1988-03-09 1988-03-09 Synthesis of beta-hydroxyphenetylamines Pending JPH01228946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5535988A JPH01228946A (en) 1988-03-09 1988-03-09 Synthesis of beta-hydroxyphenetylamines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5535988A JPH01228946A (en) 1988-03-09 1988-03-09 Synthesis of beta-hydroxyphenetylamines

Publications (1)

Publication Number Publication Date
JPH01228946A true JPH01228946A (en) 1989-09-12

Family

ID=12996297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5535988A Pending JPH01228946A (en) 1988-03-09 1988-03-09 Synthesis of beta-hydroxyphenetylamines

Country Status (1)

Country Link
JP (1) JPH01228946A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5739387A (en) * 1995-05-18 1998-04-14 Sumitomo Chemical Company, Limited Process for producing threo-3-(3,4-dihydroxyphenyl)serine
WO1999002508A1 (en) * 1997-07-10 1999-01-21 Ube Industries, Ltd. Process for producing 4-alkoxycarbonyl-2-oxazolidinone compounds
KR20000063913A (en) * 2000-08-10 2000-11-06 하현준 Process for preparing 1,2-diaminopropane alcohols from aziridines
KR20010000196A (en) * 2000-08-10 2001-01-05 하현준 Process for preparing alpha-amino acids and their derivatives including phenylalanine and homophenylalanine from aziridines
WO2003002514A1 (en) * 2001-06-28 2003-01-09 Dr. Reddy's Research Foundation 3-aryl-alpha-amino propanoic acid derivatives and a process for their preparation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5739387A (en) * 1995-05-18 1998-04-14 Sumitomo Chemical Company, Limited Process for producing threo-3-(3,4-dihydroxyphenyl)serine
WO1999002508A1 (en) * 1997-07-10 1999-01-21 Ube Industries, Ltd. Process for producing 4-alkoxycarbonyl-2-oxazolidinone compounds
KR20000063913A (en) * 2000-08-10 2000-11-06 하현준 Process for preparing 1,2-diaminopropane alcohols from aziridines
KR20010000196A (en) * 2000-08-10 2001-01-05 하현준 Process for preparing alpha-amino acids and their derivatives including phenylalanine and homophenylalanine from aziridines
WO2002012184A1 (en) * 2000-08-10 2002-02-14 Chembionex Co., Ltd. Process for preparing alpha-amino acids and their derivatives including phenylalanine and homophenylalanine and their intermediates
WO2002012185A1 (en) * 2000-08-10 2002-02-14 Chembionex Co., Ltd. Process for preparing 2,3-diaminopropanols and synthesis of other compounds using 2,3-diaminopropanols
WO2003002514A1 (en) * 2001-06-28 2003-01-09 Dr. Reddy's Research Foundation 3-aryl-alpha-amino propanoic acid derivatives and a process for their preparation

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