JPH03145471A - Production of 1,2,3,4-tetrahydroacridine compound - Google Patents

Production of 1,2,3,4-tetrahydroacridine compound

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Publication number
JPH03145471A
JPH03145471A JP28177589A JP28177589A JPH03145471A JP H03145471 A JPH03145471 A JP H03145471A JP 28177589 A JP28177589 A JP 28177589A JP 28177589 A JP28177589 A JP 28177589A JP H03145471 A JPH03145471 A JP H03145471A
Authority
JP
Japan
Prior art keywords
acridine
compound
tetrahydroacridine
hydrogenation
reaction
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
JP28177589A
Other languages
Japanese (ja)
Inventor
Isao Mochida
勲 持田
Kinya Sakanishi
欣也 坂西
Hiroshi Okazaki
博 岡崎
Mahito Soeda
眞日止 副田
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.)
Nippon Steel Chemical and Materials Co Ltd
Original Assignee
Nippon Steel 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 Nippon Steel Chemical Co Ltd filed Critical Nippon Steel Chemical Co Ltd
Priority to JP28177589A priority Critical patent/JPH03145471A/en
Publication of JPH03145471A publication Critical patent/JPH03145471A/en
Pending legal-status Critical Current

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  • Other In-Based Heterocyclic Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

PURPOSE:To obtain the title compound in an industrially advantageous manner by amination of the 9-site of acridine as raw material available at low cost followed by selective hydrogenation of the 1, 2, 3,4 sites of the acridine ring with hydrogen gas in the presence of a platinum-based catalyst. CONSTITUTION:The 9-site of acridine is aminated and then hydrogenated into the objective 1,2,3,4-tetrahydroacridine compound. The hydrogenation is made by reaction with hydrogen gas in the presence of platinum-based catalyst. With this method, the hydrogenation of the ring located at the center of the acridine molecule is inhibited due to the presence of the amino group and the 1,2,3,4-sites of the acridine ring can be selectively hydrogenated. Through the above process, the objective compound can be synthesized economically, in high efficiency from the inexpensive raw material, thus being advantageous. The present compound is useful as an Alzheimer-type senile dementia therapeutic agent or its intermediate, etc.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は1.2.3.4−テトラヒドロアクリジン化合
物の製造方法に関する。このような化合物はアルツハイ
マー型老人性痴呆薬あるいはその中間体等として有用で
ある。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing a 1.2.3.4-tetrahydroacridine compound. Such compounds are useful as Alzheimer's type senile dementia drugs or intermediates thereof.

〔従来の技術〕[Conventional technology]

アクリジンを白金族系触媒の存在下で水素化することは
、特開昭63−77、860号公報等で公知であり、1
.2.3.4.5.6.7.8−オクタヒドロアクリジ
ン、1、2.3.4.4a、 9.9a、 10−オク
タヒドロアクリジン又はパーヒドロアクリジンを選択的
に製造することができる。しかしながら、1.2.3.
4−テトラヒドロアクリジンを選択的に製造することは
困難である。
Hydrogenation of acridine in the presence of a platinum group catalyst is known from JP-A No. 63-77, No. 860, etc., and 1
.. 2.3.4.5.6.7.8-octahydroacridine, 1, 2.3.4.4a, 9.9a, 10-octahydroacridine or perhydroacridine can be selectively produced . However, 1.2.3.
It is difficult to selectively produce 4-tetrahydroacridine.

9−アミノ−1,2,3,4−テトラヒドロアクリジン
等の1.2.3.4−テトラヒドロアクリジン化合物は
古くから医薬品又はその中間体として有用であることが
知られており、種々の合成法が研究されてきた(例えば
、J、 Chem、 Sac、、 1947.634、
Tetrahedron Lett、、 No、20.
1277(1963)、tlssR特許第319゜59
6号等)。そして、これらの研究例で明らかなように、
このような化合物の合成法としては閉環反応でテトラヒ
ドロアクリジン環を合成する方法がもっばらであった。
1,2,3,4-tetrahydroacridine compounds such as 9-amino-1,2,3,4-tetrahydroacridine have long been known to be useful as pharmaceuticals or intermediates thereof, and can be synthesized using various synthetic methods. have been studied (e.g., J. Chem. Sac, 1947.634,
Tetrahedron Lett, No. 20.
1277 (1963), tlssR Patent No. 319°59
No. 6, etc.). And, as is clear from these research examples,
The most common method for synthesizing such compounds has been to synthesize a tetrahydroacridine ring through a ring-closing reaction.

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

コールタール中などに含まれており、安価に得ることが
できるアクリジンを原料として1.2.3.4テトラヒ
ドロアクリジン化合物を経済的、かつ効率よく合成する
ことができれば、工業的に極めて望ましいことといえる
。本発明はこのような合成法を提供することを目的とす
る。
It would be extremely desirable industrially if 1.2.3.4 tetrahydroacridine compounds could be synthesized economically and efficiently using acridine, which is contained in coal tar and can be obtained at low cost, as a raw material. I can say that. The present invention aims to provide such a synthetic method.

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

本発明者らは、上記のような課題を解決するため鋭意研
究を行い、9−アミノアクリジンを水素化すると選択的
に1.2.3.4−テトラヒドロアクリジン化合物が得
られることを見出し、本発明を完成した。
The present inventors conducted extensive research to solve the above problems and discovered that 1.2.3.4-tetrahydroacridine compound can be selectively obtained by hydrogenating 9-aminoacridine. Completed the invention.

すなわち、本発明は、アクリジンの9−位をアミン化し
たのち、水素化することを特徴とするl、2゜3.4−
テトラヒドロアクリジン化合物の製造方法および9−ア
ミノアクリジン又はその塩を、白金族系触媒の存在下に
水素ガスと反応させることを特徴とする1、 2.3.
4−テトラヒドロアクリジン化合物の製造方法である。
That is, the present invention is characterized in that the 9-position of acridine is aminated and then hydrogenated.
1, 2.3. A method for producing a tetrahydroacridine compound, characterized by reacting 9-aminoacridine or a salt thereof with hydrogen gas in the presence of a platinum group catalyst.
This is a method for producing a 4-tetrahydroacridine compound.

請求項1に記載した発明において、アクリジンの9−位
をアミノ化する方法としては、アクリジンを過安息香酸
で酸化してN−オキシドとし、次いで無水酢酸中でリフ
ラックスして9−アクリダノンとし、これを塩化チオニ
ル、オキシ塩化リン、五塩化リン等の塩素化剤と反応さ
せる方法、あるいはN−オキシドに五塩化リンを反応さ
せるような方法で塩素化し、得られた9−クロロアクリ
ジンを炭酸アンモニウムとをフェノールの存在下、12
08C前後の温度で反応させて9−アミノアクリジンと
する等の方法がある(Org、 5ynth、 Co1
1. Vol、 1955、  III、 53)。
In the invention described in claim 1, the method for aminating the 9-position of acridine includes oxidizing acridine with perbenzoic acid to form an N-oxide, then refluxing it in acetic anhydride to form 9-acridanone, This is chlorinated by a method of reacting with a chlorinating agent such as thionyl chloride, phosphorus oxychloride, or phosphorus pentachloride, or by a method of reacting phosphorus pentachloride with N-oxide, and the resulting 9-chloroacridine is treated with ammonium carbonate. and in the presence of phenol, 12
There are methods such as reacting at a temperature around 08C to form 9-aminoacridine (Org, 5ynth, Co1
1. Vol. 1955, III, 53).

9−アミノアクリジンの水素化は、水素化触媒の存在下
、水素ガスと反応させることにより行う。
Hydrogenation of 9-aminoacridine is performed by reacting it with hydrogen gas in the presence of a hydrogenation catalyst.

この反応においては、アミノ基によってアクリジンの、
中央の環の水素化が阻害され、1.2.3.4−位が選
択的に水素化される。したがって、請求項1の発明では
触媒の種類、反応条件等は任意であるが、水素化触媒と
して白金族系触媒を使用すればより選択性が向上する。
In this reaction, acridine is
Hydrogenation of the central ring is inhibited and the 1,2,3,4-positions are selectively hydrogenated. Therefore, in the invention of claim 1, the type of catalyst, reaction conditions, etc. are arbitrary, but if a platinum group catalyst is used as the hydrogenation catalyst, the selectivity will be further improved.

また、9−アミノアクリジンは、塩酸塩、硫酸塩のよう
な塩の形で用いてもよいが、収量がやや低い。
Furthermore, 9-aminoacridine may be used in the form of a salt such as hydrochloride or sulfate, but the yield is rather low.

請求項2の発明では、水素化触媒として白金族系触媒を
使用する。白金族系触媒としては白金、パラジウム、ル
テニウム等の白金族金属をアルミナ、カーボン等の担体
に担持させた触媒が挙げられる。この場合の白金族金属
の担持量は0.1〜IO重量%の範囲が好ましい。また
、白金族金属としてパラジウム触媒を用いると、最もよ
い収量を与える。水素化触媒の使用量はバッチ反応で、
3〜5重量%の白金族金属を担持した触媒を用いる場合
、原料の9−アミノアクリジンに対し0. 1〜2.5
重態%程度である。
In the invention of claim 2, a platinum group catalyst is used as the hydrogenation catalyst. Examples of platinum group catalysts include catalysts in which platinum group metals such as platinum, palladium, and ruthenium are supported on carriers such as alumina and carbon. In this case, the amount of platinum group metal supported is preferably in the range of 0.1 to IO weight %. Also, the use of a palladium catalyst as the platinum group metal gives the best yield. The amount of hydrogenation catalyst used is for batch reaction.
When using a catalyst supporting 3 to 5% by weight of a platinum group metal, 0.0% to 9-aminoacridine as a raw material is used. 1-2.5
He is in a serious condition.

反応は70〜120°C1水素圧力20 kg/ cr
l、G以上の条件で行うことが好ましい。120℃を越
える高温又は100 kg/cri、G以上の高い水素
圧力の条件では、反応率が高く、反応時間も短縮される
が、パーヒドロ化が起こりやすくなり、選択率が低下す
る。したがって、より好ましくは反応温度80〜100
℃、水素圧力50〜80 kg/cnf、Gである。反
応は、原料の9−アミノアクリジンを適当な溶媒に溶解
し、触媒を加え、水素ガス加圧下に攪拌しながら反応さ
せる方法等を挙げることができる。
The reaction is 70-120°C1 hydrogen pressure 20 kg/cr
It is preferable to carry out the test under conditions of 1, G or higher. At a high temperature exceeding 120° C. or a high hydrogen pressure of 100 kg/cri, G or higher, the reaction rate is high and the reaction time is shortened, but perhydration tends to occur and the selectivity decreases. Therefore, the reaction temperature is more preferably 80 to 100.
℃, hydrogen pressure 50-80 kg/cnf, G. The reaction may be carried out by dissolving 9-aminoacridine as a raw material in a suitable solvent, adding a catalyst, and reacting with stirring under pressure of hydrogen gas.

本発明の1.2.3.4−テトラヒドロアクリジン化合
物は、9−アミノ−1,2,3,4−テトラヒドロアク
リジン自体、およびこの誘導体であり、誘導体してはア
ミノ基を除去又はアミン基と反応しうる化合物を反応さ
せて得られる化合物、アクリジン骨格に置換基を結合さ
せた化合物などがある。
The 1.2.3.4-tetrahydroacridine compound of the present invention is 9-amino-1,2,3,4-tetrahydroacridine itself and its derivatives, and the derivatives include removing the amino group or adding an amine group. These include compounds obtained by reacting reactive compounds, and compounds in which a substituent is bonded to an acridine skeleton.

〔実施例〕〔Example〕

実施例1 アクリジンを、クロロホルム中、過安息香酸で酸化して
N−オキシドとし、次いで五塩化リン反応させて9−ク
ロロアクリジンとした。これに炭酸アンモニウムを加え
て、フェノールの存在下、120°C145分間攪拌し
て9−アミノアクリジンを得た。
Example 1 Acridine was oxidized with perbenzoic acid in chloroform to give the N-oxide, and then reacted with phosphorus pentachloride to give 9-chloroacridine. Ammonium carbonate was added to this, and the mixture was stirred at 120°C for 145 minutes in the presence of phenol to obtain 9-aminoacridine.

この9−アミノアクリジンの塩酸塩1g、触媒0゜25
gおよび溶媒としてのエタノールlogを、内容積50
−の電磁攪拌式のオートクレーブに入れ、水素ガスを封
入後、100℃で10分間反応を行った。
1 g of this 9-aminoacridine hydrochloride, 0°25 catalyst
g and ethanol log as solvent, internal volume 50
- The autoclave was placed in a magnetic stirring type autoclave, and after hydrogen gas was sealed, a reaction was carried out at 100°C for 10 minutes.

反応終了後、生成物を取り出し、ベンゼンに溶解させ、
このベンゼン溶液を水酸化ナトリウムの希薄溶液で洗浄
し、無水硫酸ナトリウムで脱水したのち、ガスクロマト
グラフで分析した。また、目的生成物である9−アミノ
−1,2,3,4−テトラヒドロアクリジンは、’H−
N M Rおよび” C−N M R並びにGC−MS
で確認した。その他の条件および9−アミノ−1,2,
3,4−テトラヒドロアクリジンの選択率、収率を第1
表に示す。
After the reaction is complete, the product is taken out and dissolved in benzene.
This benzene solution was washed with a dilute solution of sodium hydroxide, dehydrated with anhydrous sodium sulfate, and then analyzed by gas chromatography. In addition, the target product 9-amino-1,2,3,4-tetrahydroacridine is 'H-
NMR and "C-NMR and GC-MS
I confirmed it. Other conditions and 9-amino-1,2,
The selectivity and yield of 3,4-tetrahydroacridine were
Shown in the table.

第  1  表 実施例2 9−アミノアクリジン5g、白金属金属をアルミナ又は
カーボンに5%担持させた触媒0.5gおよびエタノー
ル100dを、内容積300dの電磁攪拌式オートクレ
ーブに入れ、水素圧60kg/crt、G、 80℃で
2時間反応を行った。
Table 1 Example 2 5 g of 9-aminoacridine, 0.5 g of a catalyst with 5% platinum metal supported on alumina or carbon, and 100 d of ethanol were placed in a magnetic stirring autoclave with an internal volume of 300 d, and the hydrogen pressure was 60 kg/cr. , G. The reaction was carried out at 80°C for 2 hours.

反応終了後、内容物を濾過して、触媒を除去したのち、
エタノールを蒸留除去して得られた固形物を常法に従っ
てカラムクロマトグラフで精製した。結果を第2表に示
す。
After the reaction is complete, the contents are filtered to remove the catalyst.
The solid material obtained by distilling off the ethanol was purified by column chromatography according to a conventional method. The results are shown in Table 2.

第  2  表 (注)■Pd/A、 Rh/A1pt/Aは、それぞれ
Pd、 Rh。
Table 2 (Note) ■Pd/A and Rh/A1pt/A are Pd and Rh, respectively.

Ptをアルミナに5%担持させた触媒である。This is a catalyst in which 5% of Pt is supported on alumina.

■Pd/Cは、カーボンにPdを5%担持させた触媒で
ある。
(2) Pd/C is a catalyst in which 5% of Pd is supported on carbon.

(注)記号、単位は第1表と同じ。(Note) Symbols and units are the same as in Table 1.

実施例3 9−アミノアクリジン100g、3%Pd/アルミナ触
媒15gおよびエタノール500m1をオートクレーブ
に入れ、水素ガスを封入したのち、反応を行った。条件
および結果を第3表に示す。
Example 3 100 g of 9-aminoacridine, 15 g of 3% Pd/alumina catalyst, and 500 ml of ethanol were placed in an autoclave, and hydrogen gas was sealed therein, followed by a reaction. The conditions and results are shown in Table 3.

第  3  表 〔発明の効果〕 本発明方法によれば、アクリジン環の1.2.3.4−
位を選択的に水素化することができ、有利に1,2゜3
.4−テトラヒドロアクリジン化合物を収率良く製造す
ることができる。
Table 3 [Effects of the Invention] According to the method of the present invention, 1.2.3.4- of the acridine ring
It is possible to selectively hydrogenate the 1,2°3
.. A 4-tetrahydroacridine compound can be produced with good yield.

Claims (2)

【特許請求の範囲】[Claims] (1)アクリジンの9−位をアミノ化したのち、水素化
することを特徴とする1,2,3,4−テトラヒドロア
クリジン化合物の製造方法。
(1) A method for producing a 1,2,3,4-tetrahydroacridine compound, which comprises aminating the 9-position of acridine and then hydrogenating it.
(2)9−アミノアクリジン又はその塩を、白金族系触
媒の存在下に水素ガスと反応させることを特徴とする1
,2,3,4−テトラヒドロアクリジン化合物の製造方
法。
(2) 1 characterized in that 9-aminoacridine or its salt is reacted with hydrogen gas in the presence of a platinum group catalyst.
, 2,3,4-Tetrahydroacridine compound manufacturing method.
JP28177589A 1989-10-31 1989-10-31 Production of 1,2,3,4-tetrahydroacridine compound Pending JPH03145471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28177589A JPH03145471A (en) 1989-10-31 1989-10-31 Production of 1,2,3,4-tetrahydroacridine compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28177589A JPH03145471A (en) 1989-10-31 1989-10-31 Production of 1,2,3,4-tetrahydroacridine compound

Publications (1)

Publication Number Publication Date
JPH03145471A true JPH03145471A (en) 1991-06-20

Family

ID=17643806

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28177589A Pending JPH03145471A (en) 1989-10-31 1989-10-31 Production of 1,2,3,4-tetrahydroacridine compound

Country Status (1)

Country Link
JP (1) JPH03145471A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114130389A (en) * 2021-08-31 2022-03-04 浙江工业大学 Supported catalyst, preparation thereof and application thereof in selective hydrogenation of nitrogen-containing heterocyclic compound

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114130389A (en) * 2021-08-31 2022-03-04 浙江工业大学 Supported catalyst, preparation thereof and application thereof in selective hydrogenation of nitrogen-containing heterocyclic compound
CN114130389B (en) * 2021-08-31 2023-11-17 浙江工业大学 Supported catalyst, preparation thereof and application thereof in selective hydrogenation of nitrogen-containing heterocyclic compound

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