JP2001226349A - 1-benzyl-3-(alpha-phenethylamino)pyrrolidine and method for producing optically active 3-aminopyrrolidine - Google Patents

1-benzyl-3-(alpha-phenethylamino)pyrrolidine and method for producing optically active 3-aminopyrrolidine

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Publication number
JP2001226349A
JP2001226349A JP2000040329A JP2000040329A JP2001226349A JP 2001226349 A JP2001226349 A JP 2001226349A JP 2000040329 A JP2000040329 A JP 2000040329A JP 2000040329 A JP2000040329 A JP 2000040329A JP 2001226349 A JP2001226349 A JP 2001226349A
Authority
JP
Japan
Prior art keywords
benzyl
pyrrolidine
phenethylamino
optically active
aminopyrrolidine
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
JP2000040329A
Other languages
Japanese (ja)
Inventor
Toshito Sakai
俊人 酒井
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.)
Koei Chemical Co Ltd
Original Assignee
Koei Chemical Co Ltd
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 Koei Chemical Co Ltd filed Critical Koei Chemical Co Ltd
Priority to JP2000040329A priority Critical patent/JP2001226349A/en
Publication of JP2001226349A publication Critical patent/JP2001226349A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a new pyrrolidine derivative. SOLUTION: This new pyrrolidine derivative is 1-benzyl-3-(α-phenetylamino) pyrrolidine and its optically active 1-benzyl-3-(α-phenetylamino)pyrrolidine expressed by formula (1) (wherein, * means a carbon atom attached with this mark is an asymmetric center). The method for producing an optically active 3-aminopyrrolidine is provided by reacting the optically active 1-benzyl-3-(α- phenetylamino)pyrrolidine expressed by the formula (1) with hydrogen in the presence of a hydrogenation catalyst.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、新規な化合物であ
る1−ベンジル−3−(α−フェネチルアミノ)ピロリ
ジンに関する。1−ベンジル−3−(α−フェネチルア
ミノ)ピロリジンは医薬中間体等として有用である。
[0001] The present invention relates to a novel compound, 1-benzyl-3- (α-phenethylamino) pyrrolidine. 1-benzyl-3- (α-phenethylamino) pyrrolidine is useful as a pharmaceutical intermediate or the like.

【0002】[0002]

【発明が解決しようとする課題】本発明は、医薬中間体
等として有用な新規なピロリジン誘導体を提供すること
を課題とする。
An object of the present invention is to provide a novel pyrrolidine derivative useful as a pharmaceutical intermediate or the like.

【0003】[0003]

【課題を解決するための手段】本発明者は、上記課題を
解決するために鋭意検討した結果、新規な化合物である
1−ベンジル−3−(α−フェネチルアミノ)ピロリジ
ン及びその光学活性体である次の式(1):
Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have found that a novel compound, 1-benzyl-3- (α-phenethylamino) pyrrolidine and its optically active isomer. Some following equation (1):

【0004】[0004]

【化2】 (式中、*はこれを付した炭素原子が不斉中心であるこ
とを示す。)で表される光学活性1−ベンジル−3−
(α−フェネチルアミノ)ピロリジンを見出した。これ
らは白金族金属触媒の存在下に1−ベンジル−3−ピロ
リドンを、α−フェネチルアミン又は光学活性α−フェ
ネチルアミン、及び水素と反応させて容易に製造するこ
とができる。また、上記式(1)で表される光学活性1
−ベンジル−3−(α−フェネチルアミノ)ピロリジン
を、水素化触媒の存在下に水素と反応させると医薬中間
体として有用な光学活性3−アミノピロリジンが製造で
きることも見出し、本発明を完成するに至った。
Embedded image (In the formula, * indicates that the carbon atom to which this is attached is an asymmetric center.)
(Α-phenethylamino) pyrrolidine was found. These can be easily produced by reacting 1-benzyl-3-pyrrolidone with α-phenethylamine or optically active α-phenethylamine and hydrogen in the presence of a platinum group metal catalyst. The optical activity 1 represented by the above formula (1)
It has also been found that the reaction of -benzyl-3- (α-phenethylamino) pyrrolidine with hydrogen in the presence of a hydrogenation catalyst can produce an optically active 3-aminopyrrolidine useful as a pharmaceutical intermediate. Reached.

【0005】即ち、本発明は、1−ベンジル−3−(α
−フェネチルアミノ)ピロリジン及び上記式(1)で表
される光学活性1−ベンジル−3−(α−フェネチルア
ミノ)ピロリジンに関する。また本発明は、上記式
(1)で表される光学活性1−ベンジル−3−(α−フ
ェネチルアミノ)ピロリジンを、水素化触媒の存在下、
水素と反応せしめることを特徴とする光学活性3−アミ
ノピロリジンの製造法に関するものでもある。
That is, the present invention relates to 1-benzyl-3- (α
-Phenethylamino) pyrrolidine and optically active 1-benzyl-3- (α-phenethylamino) pyrrolidine represented by the above formula (1). Further, the present invention provides a method for converting the optically active 1-benzyl-3- (α-phenethylamino) pyrrolidine represented by the above formula (1) into a compound in the presence of a hydrogenation catalyst.
The present invention also relates to a method for producing optically active 3-aminopyrrolidine characterized by reacting with hydrogen.

【0006】[0006]

【発明の実施の形態】以下に本発明を詳細に説明する。
本発明の1−ベンジル−3−(α−フェネチルアミノ)
ピロリジンは、1−ベンジル−3−ピロリドンを、白金
族金属触媒の存在下、α−フェネチルアミン及び水素と
反応させることにより製造できる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
1-benzyl-3- (α-phenethylamino) of the present invention
Pyrrolidine can be produced by reacting 1-benzyl-3-pyrrolidone with α-phenethylamine and hydrogen in the presence of a platinum group metal catalyst.

【0007】α−フェネチルアミンの使用量は、1−ベ
ンジル−3−ピロリドン1モルに対して1モル以上であ
ればよく、好ましくは2〜4モルである。
The amount of α-phenethylamine to be used is 1 mol or more, preferably 2 to 4 mol, per 1 mol of 1-benzyl-3-pyrrolidone.

【0008】白金族金属触媒としては、白金族金属、即
ち、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からなる群より選ばれる少なくとも
1種の金属を活性成分とする触媒であり、接触水素化に
おける触媒として公知の白金族金属触媒を用いることが
できる。白金族金属触媒は、触媒中の金属が、1−ベン
ジル−3−ピロリドン100重量部に対して通常1〜2
0重量部、好ましくは3〜5重量部となるように使用さ
れる。
[0008] Platinum group metal catalysts include platinum group metals, ie, ruthenium, rhodium, palladium, osmium,
A catalyst containing at least one metal selected from the group consisting of iridium and platinum as an active component, and a known platinum group metal catalyst can be used as a catalyst in catalytic hydrogenation. In the platinum group metal catalyst, the metal in the catalyst is usually 1 to 2 parts per 100 parts by weight of 1-benzyl-3-pyrrolidone.
It is used in an amount of 0 parts by weight, preferably 3 to 5 parts by weight.

【0009】また1−ベンジル−3−(α−フェネチル
アミノ)ピロリジンの製造には通常溶媒が用いられる。
溶媒としては、メタノール、エタノール、イソプロパノ
ール等のアルコール類、ベンゼン、キシレン等の芳香族
炭化水素、テトラヒドロフラン、ジオキサン等のエーテ
ル類等が挙げられるが、これに限定されない。好ましい
溶媒は、アルコール類である。溶媒の使用量は特に制限
されないが、1−ベンジル−3−ピロリドン1重量部に
対して、通常0.5〜10重量部、好ましくは1〜4重
量部である。
A solvent is usually used for the production of 1-benzyl-3- (α-phenethylamino) pyrrolidine.
Examples of the solvent include, but are not limited to, alcohols such as methanol, ethanol, and isopropanol; aromatic hydrocarbons such as benzene and xylene; and ethers such as tetrahydrofuran and dioxane. Preferred solvents are alcohols. The amount of the solvent to be used is not particularly limited, but is usually 0.5 to 10 parts by weight, preferably 1 to 4 parts by weight, per 1 part by weight of 1-benzyl-3-pyrrolidone.

【0010】1−ベンジル−3−(α−フェネチルアミ
ノ)ピロリジンの製造を実施するには、例えば、加圧反
応器に1−ベンジル−3−ピロリドン、α−フェネチル
アミン、白金族金属触媒及び溶媒を仕込み、当該反応器
に水素を導入して水素圧を0.1〜1.0MPaに保ち
ながら、20〜60℃で攪拌下に反応させればよい。水
素の消費が認められなくなった後、通常1〜5時間、上
記水素圧及び温度に保って反応を完結させる。
In order to carry out the production of 1-benzyl-3- (α-phenethylamino) pyrrolidine, for example, 1-benzyl-3-pyrrolidone, α-phenethylamine, a platinum group metal catalyst and a solvent are placed in a pressure reactor. What is necessary is just to charge and react at 20-60 degreeC under stirring, introducing hydrogen into the said reactor and keeping a hydrogen pressure at 0.1-1.0 MPa. After the consumption of hydrogen is no longer observed, the reaction is completed by maintaining the above hydrogen pressure and temperature usually for 1 to 5 hours.

【0011】反応終了後の反応混合物を濾過して白金族
金属触媒を濾別し、得られた濾液を濃縮後、減圧下に蒸
留または常圧ないし微加圧下にてカラム処理すれば1−
ベンジル−3−(α−フェネチルアミノ)ピロリジンを
回収することができる。
After completion of the reaction, the reaction mixture is filtered to separate the platinum group metal catalyst, and the obtained filtrate is concentrated and then distilled under reduced pressure or subjected to a column treatment under normal pressure or slight pressure to give 1-
Benzyl-3- (α-phenethylamino) pyrrolidine can be recovered.

【0012】また本発明の上記式(1)で表される光学
活性1−ベンジル−3−(α−フェネチルアミノ)ピロ
リジンは、α−フェネチルアミンとして光学活性α−フ
ェネチルアミンを用いること以外は上記1−ベンジル−
3−(α−フェネチルアミノ)ピロリジンの製造法と同
様にして製造できる。光学活性α−フェネチルアミンと
しては、(R)−α−フェネチルアミン及び(S)−α
−フェネチルアミンのいずれも使用することができる。
(R)−α−フェネチルアミンを使用すると光学活性1
−ベンジル−3−(α−フェネチルアミノ)ピロリジン
として(R)−1−ベンジル−3−[(R)−α−フェ
ネチルアミノ]ピロリジンが主成分として得られ、
(S)−α−フェネチルアミンを使用すると(S)−1
−ベンジル−3−[(S)−α−フェネチルアミノ]ピ
ロリジンが主成分として得られる。
The optically active 1-benzyl-3- (α-phenethylamino) pyrrolidine represented by the above formula (1) of the present invention is the same as the above-mentioned 1-benzyl-3- (α-phenethylamine) except that optically active α-phenethylamine is used as α-phenethylamine. Benzyl-
It can be produced in the same manner as in the production method of 3- (α-phenethylamino) pyrrolidine. As the optically active α-phenethylamine, (R) -α-phenethylamine and (S) -α
-Any of phenethylamine can be used.
When (R) -α-phenethylamine is used, optical activity 1
(R) -1-benzyl-3-[(R) -α-phenethylamino] pyrrolidine is obtained as the main component as -benzyl-3- (α-phenethylamino) pyrrolidine;
When (S) -α-phenethylamine is used, (S) -1
-Benzyl-3-[(S) -α-phenethylamino] pyrrolidine is obtained as the main component.

【0013】次に本発明の光学活性3−アミノピロリジ
ンの製造法は、本発明の上記式(1)で表される光学活
性1−ベンジル−3−(α−フェネチルアミノ)ピロリ
ジンを、水素化触媒の存在下に水素と反応させることか
らなる。当該方法によれば光学活性1−ベンジル−3−
(α−フェネチルアミノ)ピロリジンにおけるピロリジ
ン環の3位の不斉炭素の立体構造を維持した光学活性3
−アミノピロリジンを製造することができ、例えば、
(R)−1−ベンジル−3−[(R)−α−フェネチル
アミノ]ピロリジンからは(R)−3−アミノピロリジ
ンが得られ、(S)−1−ベンジル−3−[(S)−α
−フェネチルアミノ]ピロリジンからは(S)−3−ア
ミノピロリジンが得られる。
Next, the process for producing the optically active 3-aminopyrrolidine of the present invention comprises the step of hydrogenating the optically active 1-benzyl-3- (α-phenethylamino) pyrrolidine of the present invention represented by the above formula (1). Reacting with hydrogen in the presence of a catalyst. According to the method, optically active 1-benzyl-3-
Optical activity 3 of (α-phenethylamino) pyrrolidine while maintaining the steric structure of the asymmetric carbon at position 3 of the pyrrolidine ring
-Aminopyrrolidine can be produced, for example,
(R) -1-benzyl-3-[(R) -α-phenethylamino] pyrrolidine gives (R) -3-aminopyrrolidine, and (S) -1-benzyl-3-[(S)- α
(Phenethylamino) pyrrolidine gives (S) -3-aminopyrrolidine.

【0014】水素化触媒としては、接触水素化に用いら
る公知の触媒を広く使用することができ、例えば、上記
本発明の1−ベンジル−3−(α−フェネチルアミノ)
ピロリジンの製造に使用される白金族金属触媒のほか、
ラネーニッケル及びラネーコバルト等のラネー触媒等を
用いることができる。好ましい水素化触媒は白金族金属
触媒である。水素化触媒は、触媒中の金属が、光学活性
1−ベンジル−3−(α−フェネチルアミノ)ピロリジ
ン100重量部に対して通常1〜20重量部、好ましく
は2〜10重量部となるように使用するのがよい。
As the hydrogenation catalyst, known catalysts used for catalytic hydrogenation can be widely used. For example, 1-benzyl-3- (α-phenethylamino) of the present invention is used.
In addition to the platinum group metal catalyst used for the production of pyrrolidine,
Raney catalysts such as Raney nickel and Raney cobalt can be used. Preferred hydrogenation catalysts are platinum group metal catalysts. The hydrogenation catalyst is prepared such that the metal in the catalyst is usually 1 to 20 parts by weight, preferably 2 to 10 parts by weight, per 100 parts by weight of optically active 1-benzyl-3- (α-phenethylamino) pyrrolidine. Good to use.

【0015】本発明の光学活性3−アミノピロリジンの
製造には通常溶媒が用いられる。溶媒としては、メタノ
ール、エタノール、イソプロパノール等のアルコール
類、テトラヒドロフラン、ジオキサンなどのエーテル類
等が挙げられ、好ましくはアルコール類である。溶媒の
使用量は特に制限されないが、式(1)で表される光学
活性1−ベンジル−3−(α−フェネチルアミノ)ピロ
リジン1重量部に対して、通常0.5〜10重量部、好
ましくは1〜4重量部である。
A solvent is usually used for producing the optically active 3-aminopyrrolidine of the present invention. Examples of the solvent include alcohols such as methanol, ethanol and isopropanol, and ethers such as tetrahydrofuran and dioxane, and preferably alcohols. The amount of the solvent used is not particularly limited, but is usually 0.5 to 10 parts by weight, preferably 1 to 10 parts by weight, based on 1 part by weight of the optically active 1-benzyl-3- (α-phenethylamino) pyrrolidine represented by the formula (1). Is 1 to 4 parts by weight.

【0016】本発明の光学活性3−アミノピロリジンの
製造を実施するには、例えば、加圧反応器に光学活性1
−ベンジル−3−(α−フェネチルアミノ)ピロリジ
ン、水素化触媒及び溶媒を仕込み、当該反応器に水素を
導入して水素圧を1.0〜5.0MPaに保ちながら、
80〜150℃で攪拌下に反応させればよい。水素の消
費が認められなくなった後、通常1〜5時間、上記水素
圧及び温度に保って反応を完結させる。
In order to carry out the production of the optically active 3-aminopyrrolidine of the present invention, for example, an optically active 3-aminopyrrolidine is added to a pressure reactor.
-Benzyl-3- (α-phenethylamino) pyrrolidine, a hydrogenation catalyst and a solvent were charged, and hydrogen was introduced into the reactor to maintain the hydrogen pressure at 1.0 to 5.0 MPa.
What is necessary is just to make it react under stirring at 80-150 degreeC. After the consumption of hydrogen is no longer observed, the reaction is completed by maintaining the above hydrogen pressure and temperature usually for 1 to 5 hours.

【0017】反応終了後の反応混合物を濾過して水素化
触媒を濾別し、得られた濾液を濃縮後、減圧下に蒸留ま
たは常圧ないし微加圧下にてカラム処理すれば、光学活
性3−アミノピロリジンを回収することができる。
After completion of the reaction, the reaction mixture is filtered to remove the hydrogenation catalyst, and the obtained filtrate is concentrated and then distilled under reduced pressure or subjected to a column treatment under normal pressure or slight pressure to obtain an optically active compound having an optical activity of 3%. -Aminopyrrolidine can be recovered.

【0018】[0018]

【実施例】以下に実施例を示し、本発明をさらに具体的
に説明するが、本発明は以下の実施例に限定されるもの
ではない。尚、以下の実施例における液体クロマトグラ
フィーの分析条件は次の通りである。 <液体クロマトグラフィー分析条件> カラム;Inertsil ODS−3V(内径4.6
mm、長さ250mm)溶離液;20ミリモル/リット
ル−酢酸アンモニウム水溶液:アセトニトリル (容量比)=7:3 溶離液流速:1.0ml/分 温度:40℃ 検出:UV 210nm
EXAMPLES The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the following examples. In addition, the analysis conditions of the liquid chromatography in the following Examples are as follows. <Liquid chromatography analysis conditions> Column: Inertsil ODS-3V (inner diameter 4.6)
eluent: 20 mmol / l-aqueous ammonium acetate: acetonitrile (volume ratio) = 7: 3 Eluent flow rate: 1.0 ml / min Temperature: 40 ° C. Detection: UV 210 nm

【0019】実施例1 容量100mlのオートクレーブに1−ベンジル−3−
ピロリドン5.26g(30ミリモル)、(R)−α−
フェネチルアミン10.9g(90ミリモル)、エタノ
ール35.6g及び5重量%Pt/C0.26gを仕込
んだ。次いで水素を導入して水素置換した後、引き続き
水素を導入しながら0.5MPaの水素圧下、30℃に
て8時間反応させた。反応終了後、得られた反応混合物
から触媒を濾別後、濾液を濃縮し、得られた残査を液体
クロマトグラフィーで分析した。残渣には1−ベンジル
−3−(−α−フェネチルアミノ)ピロリジンが収率7
3.1%で含まれていた。なお当該1−ベンジル−3−
(−α−フェネチルアミノ)ピロリジンは、(R)−1
−ベンジル−3−[(R)−α−フェネチルアミノ]ピ
ロリジンと(S)−1−ベンジル−3−[(R)−α−
フェネチルアミノ]ピロリジンの割合が、前者63.0
%に対して後者37.0%であった。得られた1−ベン
ジル−3−(α−フェネチルアミノ)ピロリジンの13
−NMR、1H−NMR、IR及びMSの分析結果は次
のとおりであった。
Example 1 1-benzyl-3- was added to an autoclave having a capacity of 100 ml.
5.26 g (30 mmol) of pyrrolidone, (R) -α-
10.9 g (90 mmol) of phenethylamine, 35.6 g of ethanol and 0.26 g of 5% by weight Pt / C were charged. Next, after introducing hydrogen to replace the hydrogen, the reaction was carried out at 30 ° C. for 8 hours under a hydrogen pressure of 0.5 MPa while continuously introducing hydrogen. After completion of the reaction, the catalyst was filtered off from the obtained reaction mixture, the filtrate was concentrated, and the obtained residue was analyzed by liquid chromatography. In the residue, 1-benzyl-3-(-α-phenethylamino) pyrrolidine was obtained in a yield of 7
It was contained at 3.1%. The 1-benzyl-3-
(-Α-phenethylamino) pyrrolidine is (R) -1
-Benzyl-3-[(R) -α-phenethylamino] pyrrolidine and (S) -1-benzyl-3-[(R) -α-
The ratio of phenethylamino] pyrrolidine is 63.0%.
% Was 37.0% of the latter. 13 C of the obtained 1-benzyl-3- (α-phenethylamino) pyrrolidine
The analysis results of -NMR, 1 H-NMR, IR and MS were as follows.

【0020】[0020]

【化3】 Embedded image

【0021】[0021]

【表1】 [Table 1]

【0022】IR(cm-1):3315,3061,3
026,2960,2924,2864,2787,1
603,1585,1493,1452,1371,1
346,1304,1196,1128,1072,1
027,910,885,762,734,700,5
88,550,467
IR (cm -1 ): 3315, 3063, 3
026,2960,2924,2864,2787,1
603, 1585, 1493, 1452, 1371, 1
346, 1304, 1196, 1128, 1072, 1
027,910,885,762,734,700,5
88,550,467

【0023】MS(CI):[M+H]+=281MS (CI): [M + H] + = 281

【0024】実施例2 実施例1においてエタノール35.6gに代えてメタノ
ール35.6gを使用した以外は実施例1と同様に行っ
た。その結果、1−ベンジル−3−(α−フェネチルア
ミノ)ピロリジンが収率90.1%で得られた。なお当
該1−ベンジル−3−(−α−フェネチルアミノ)ピロ
リジンは、(R)−1−ベンジル−3−[(R)−α−
フェネチルアミノ]ピロリジンと(S)−1−ベンジル
−3−[(R)−α−フェネチルアミノ]ピロリジンの
割合が、前者61.9%に対して後者38.1%であっ
た。
Example 2 The procedure of Example 1 was repeated, except that 35.6 g of methanol was used instead of 35.6 g of ethanol. As a result, 1-benzyl-3- (α-phenethylamino) pyrrolidine was obtained at a yield of 90.1%. Note that the 1-benzyl-3-(-α-phenethylamino) pyrrolidine is (R) -1-benzyl-3-[(R) -α-
The ratio of phenethylamino] pyrrolidine and (S) -1-benzyl-3-[(R) -α-phenethylamino] pyrrolidine was 61.9% for the former and 38.1% for the latter.

【0025】実施例3 実施例1においてエタノール35.6gに代えてキシレ
ン35.6gを使用した以外は実施例1と同様に行っ
た。その結果、1−ベンジル−3(−α−フェネチルア
ミノ)ピロリジンが収率29.9%で得られた。なお当
該1−ベンジル−3−(−α−フェネチルアミノ)ピロ
リジンは、(R)−1−ベンジル−3−[(R)−α−
フェネチルアミノ]ピロリジンと(S)−1−ベンジル
−3−[(R)−α−フェネチルアミノ]ピロリジンの
割合が、前者58.6%に対して後者41.4%であっ
た。
Example 3 The procedure of Example 1 was repeated, except that 35.6 g of xylene was used instead of 35.6 g of ethanol. As a result, 1-benzyl-3 (-α-phenethylamino) pyrrolidine was obtained at a yield of 29.9%. Note that the 1-benzyl-3-(-α-phenethylamino) pyrrolidine is (R) -1-benzyl-3-[(R) -α-
The ratio of phenethylamino] pyrrolidine to (S) -1-benzyl-3-[(R) -α-phenethylamino] pyrrolidine was 48.6% for the former and 41.4% for the latter.

【0026】実施例4 実施例1においてエタノール35.6gに代えてテトラ
ヒドロフラン35.6gを使用した以外は実施例1と同
様に行った。その結果、1−ベンジル−3−(α−フェ
ネチルアミノ)ピロリジンが収率32.1%で得られ
た。なお当該1−ベンジル−3−(−α−フェネチルア
ミノ)ピロリジンは、(R)−1−ベンジル−3−
[(R)−α−フェネチルアミノ]ピロリジンと(S)
−1−ベンジル−3−[(R)−α−フェネチルアミ
ノ]ピロリジンの割合が、前者62.1%に対して後者
37.9%であった。
Example 4 The procedure of Example 1 was repeated, except that 35.6 g of ethanol was used instead of 35.6 g of ethanol. As a result, 1-benzyl-3- (α-phenethylamino) pyrrolidine was obtained at a yield of 32.1%. Note that the 1-benzyl-3-(-α-phenethylamino) pyrrolidine is (R) -1-benzyl-3-
[(R) -α-phenethylamino] pyrrolidine and (S)
The proportion of -1-benzyl-3-[(R) -α-phenethylamino] pyrrolidine was 67.9% for the former and 37.9% for the latter.

【0027】実施例5 実施例1において(R)−α−フェネチルアミンの使用
量を3.6g(30ミリモル)に代えた以外は実施例1
と同様に行った。その結果、1−ベンジル−3−(α−
フェネチルアミノ)ピロリジンが収率44.3%で得ら
れた。なお当該1−ベンジル−3−(−α−フェネチル
アミノ)ピロリジンは、(R)−1−ベンジル−3−
[(R)−α−フェネチルアミノ]ピロリジンと(S)
−1−ベンジル−3−[(R)−α−フェネチルアミ
ノ]ピロリジンの割合が、前者62.4%に対して後者
37.6%であった。
Example 5 Example 1 was repeated except that the amount of (R) -α-phenethylamine used was changed to 3.6 g (30 mmol).
The same was done. As a result, 1-benzyl-3- (α-
[Phenethylamino) pyrrolidine was obtained in a yield of 44.3%. Note that the 1-benzyl-3-(-α-phenethylamino) pyrrolidine is (R) -1-benzyl-3-
[(R) -α-phenethylamino] pyrrolidine and (S)
The proportion of -1-benzyl-3-[(R) -α-phenethylamino] pyrrolidine was 32.4% for the former and 37.6% for the latter.

【0028】実施例6 実施例1において(R)−α−フェネチルアミンの使用
量を14.5g(120ミリモル)に代えた以外は実施
例1と同様に行った。その結果、1−ベンジル−3−
(α−フェネチルアミノ)ピロリジンが収率76.4%
で得られた。なお当該1−ベンジル−3−(−α−フェ
ネチルアミノ)ピロリジンは、(R)−1−ベンジル−
3−[(R)−α−フェネチルアミノ]ピロリジンと
(S)−1−ベンジル−3−[(R)−α−フェネチル
アミノ]ピロリジンの割合が、前者63.1%に対して
後者36.9%であった。
Example 6 The procedure of Example 1 was repeated except that the amount of (R) -α-phenethylamine used was changed to 14.5 g (120 mmol). As a result, 1-benzyl-3-
(Α-phenethylamino) pyrrolidine yield 76.4%
Was obtained. The 1-benzyl-3-(-α-phenethylamino) pyrrolidine is (R) -1-benzyl-
The ratio of 3-[(R) -α-phenethylamino] pyrrolidine and (S) -1-benzyl-3-[(R) -α-phenethylamino] pyrrolidine is 63.1% for the former and 36.% for the latter. 9%.

【0029】実施例7 実施例2で得られた1−ベンジル−3−(α−フェネチ
ルアミノ)ピロリジン〔(R)−1−ベンジル−3−
[(R)−α−フェネチルアミノ]ピロリジン/(S)
−1−ベンジル−3−[(R)−α−フェネチルアミ
ノ]ピロリジン(ジアステレオマー比)=61.9/3
8.1〕5.6g(20ミリモル)、メタノール22.
4g、5重量%Pd/C0.56gを混合し、水素を導
入しながら4.0MPaの水素圧下、130℃にて3時
間反応させた。反応終了後、得られた反応混合物から触
媒を濾別後、濾液を濃縮し、得られた残査を液体クロマ
トグラフィーで分析した。その結果、(R)−3−アミ
ノピロリジンと(S)−(3)−アミノピロリジンの割
合が、前者65.0%に対して後者35.0%の3−ア
ミノピロリジンを収率87.7%で得た。
Example 7 1-benzyl-3- (α-phenethylamino) pyrrolidine obtained in Example 2 [(R) -1-benzyl-3-
[(R) -α-phenethylamino] pyrrolidine / (S)
-1-benzyl-3-[(R) -α-phenethylamino] pyrrolidine (diastereomeric ratio) = 61.9 / 3
8.1] 5.6 g (20 mmol), methanol
4 g and 0.56 g of 5% by weight Pd / C were mixed and reacted at 130 ° C. for 3 hours under a hydrogen pressure of 4.0 MPa while introducing hydrogen. After completion of the reaction, the catalyst was filtered off from the obtained reaction mixture, the filtrate was concentrated, and the obtained residue was analyzed by liquid chromatography. As a result, the ratio of (R) -3-aminopyrrolidine and (S)-(3) -aminopyrrolidine was 65.0% for the former, and 35.0% for the latter, yielding 3-aminopyrrolidine of 87.7%. %.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 1−ベンジル−3−(α−フェネチルア
ミノ)ピロリジン。
1. 1-benzyl-3- (α-phenethylamino) pyrrolidine.
【請求項2】 式(1): 【化1】 (式中、*はこれを付した炭素原子が不斉中心であるこ
とを示す。)で表される光学活性1−ベンジル−3−
(α−フェネチルアミノ)ピロリジン。
2. Formula (1): (In the formula, * indicates that the carbon atom to which this is attached is an asymmetric center.)
(Α-phenethylamino) pyrrolidine.
【請求項3】 請求項2に記載の光学活性1−ベンジル
−3−(α−フェネチルアミノ)ピロリジンを、水素化
触媒の存在下、水素と反応せしめることを特徴とする光
学活性3−アミノピロリジンの製造法。
3. An optically active 3-aminopyrrolidine, which comprises reacting the optically active 1-benzyl-3- (α-phenethylamino) pyrrolidine according to claim 2 with hydrogen in the presence of a hydrogenation catalyst. Manufacturing method.
JP2000040329A 2000-02-17 2000-02-17 1-benzyl-3-(alpha-phenethylamino)pyrrolidine and method for producing optically active 3-aminopyrrolidine Pending JP2001226349A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005115975A1 (en) * 2004-05-28 2005-12-08 Tanabe Seiyaku Co., Ltd. Arylalkylamines and process for production thereof
JP2008050307A (en) * 2006-08-25 2008-03-06 Koei Chem Co Ltd Method for producing piperidine compound

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005115975A1 (en) * 2004-05-28 2005-12-08 Tanabe Seiyaku Co., Ltd. Arylalkylamines and process for production thereof
JPWO2005115975A1 (en) * 2004-05-28 2008-03-27 田辺三菱製薬株式会社 Arylalkylamine compound and process for producing the same
EP1757582A4 (en) * 2004-05-28 2010-05-12 Mitsubishi Tanabe Pharma Corp Arylalkylamines and process for production thereof
JP4629036B2 (en) * 2004-05-28 2011-02-09 田辺三菱製薬株式会社 Arylalkylamine compound and process for producing the same
US8362274B2 (en) 2004-05-28 2013-01-29 Mitsubishi Tanabe Pharma Corporation Arylalkylamine compound and process for preparing the same
US8492111B2 (en) 2004-05-28 2013-07-23 Mitsubishi Tanabe Pharma Corporation Arylalkylamine compound and process for preparing the same
US8703721B2 (en) 2004-05-28 2014-04-22 Mitsubishi Tanabe Pharma Corporation Arylalkylamine compound and process for preparing the same
US8759387B2 (en) 2004-05-28 2014-06-24 Mitsubishi Tanabe Pharma Corporation Arylalkylamine compound and process for preparing the same
US8778628B2 (en) 2004-05-28 2014-07-15 Mitsubishi Tanabe Pharma Corporation Arylalkylamine compound and process for preparing the same
JP2008050307A (en) * 2006-08-25 2008-03-06 Koei Chem Co Ltd Method for producing piperidine compound

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