JPH0426690A - New production of thienopyridine derivative - Google Patents

New production of thienopyridine derivative

Info

Publication number
JPH0426690A
JPH0426690A JP12944290A JP12944290A JPH0426690A JP H0426690 A JPH0426690 A JP H0426690A JP 12944290 A JP12944290 A JP 12944290A JP 12944290 A JP12944290 A JP 12944290A JP H0426690 A JPH0426690 A JP H0426690A
Authority
JP
Japan
Prior art keywords
producing
dioxolane
acid
formula
new production
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
JP12944290A
Other languages
Japanese (ja)
Inventor
Sachio Ono
大野 左千雄
Moroharu Sumida
隅田 師玄
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.)
Maruko Pharmaceutical Co Ltd
Original Assignee
Maruko Pharmaceutical 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 Maruko Pharmaceutical Co Ltd filed Critical Maruko Pharmaceutical Co Ltd
Priority to JP12944290A priority Critical patent/JPH0426690A/en
Publication of JPH0426690A publication Critical patent/JPH0426690A/en
Pending legal-status Critical Current

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Abstract

PURPOSE:To simply and readily obtain the subject compound useful as an intermediate for producing ticlopidine hydrochloride as an antiplatelet agent in high yield and in one step by reacting thienylethylamine with dioxolane. CONSTITUTION:2-(2-Thienyl)ethylamine expressed by formula I is reacted with 1,3-dioxolane in the presence of an acid such as hydrochloric acid or methanesulfonic acid to afford the objective compound expressed by formula II.

Description

【発明の詳細な説明】 A。[Detailed description of the invention] A.

産業上の利用分野 本発明は、 式 で表わされるチェノピリジン誘導体およびその塩の新規
な製造法に関する。
INDUSTRIAL APPLICATION FIELD The present invention relates to a novel method for producing a chenopyridine derivative represented by the formula and a salt thereof.

本発明により製造することができる化合物(1)は、抗
血小板剤として広(臨床的に使用されている塩酸チクロ
ピジンを製造するための中間体である。チクロピジンは
Iより1工程で簡便にしかも高収率で製造することがで
きる。
Compound (1) that can be produced according to the present invention is an intermediate for producing ticlopidine hydrochloride, which is widely used clinically as an antiplatelet agent. It can be produced with high yield.

B、  従来の技術 式 で表わされる2−(2−チエニル)エチルアミンよりI
を製造する方法はいくつか知られている(特開昭54−
19994; 特開昭62−+03087;特開昭62
−103088などを参照。)。
B, I from 2-(2-thienyl)ethylamine represented by the conventional technical formula
There are several known methods for producing
19994; JP-A-62-+03087; JP-A-62
See, for example, -103088. ).

例えば、ジメチルホルムアミド中IIにクロロメチルメ
チルエーテルを作用させた時、1工程でIの塩酸塩が3
1%の収率で得られる(特開昭5419994ヲ参照)
。クロロメチルメチルエーテルは反応性が極めて高く、
また刺激性も極めて強く、取扱いには特別の注意を要す
る。同様に、TIにジメチルホルムアミド中、  1.
 3. 5−トリブチル−1,3,5−バーハイドロド
IJアジノを作用させた時、 Iの塩酸塩が65%の収
率で得られる(特開昭54−19994を参照)。また
IIにホルムアルデヒドの水溶液を作用させ、Nメチレ
ン−2−(2−チエニル)エチルアミンを抽出単離した
後、 ジメチルホルムアミド中テ。
For example, when chloromethyl methyl ether is allowed to react with II in dimethylformamide, 3 hydrochlorides of I are produced in one step.
Obtained with a yield of 1% (see JP-A-5419994)
. Chloromethyl methyl ether is extremely reactive;
It is also extremely irritating and requires special care when handling. Similarly, TI in dimethylformamide, 1.
3. When treated with 5-tributyl-1,3,5-barhydrodo IJ azino, the hydrochloride of I is obtained in a yield of 65% (see JP-A-54-19994). Further, II was treated with an aqueous formaldehyde solution to extract and isolate N-methylene-2-(2-thienyl)ethylamine, and then extracted and isolated in dimethylformamide.

塩化水素を作用させることによりIの塩酸塩が得られる
(特開昭62−103087; 特開昭6210308
8を参照)。2工程の通算収率は65%に過ぎない。し
かもホルムアルデヒドは刺激性であり、炎症等を引き起
こす恐れがあるので。
Hydrochloride of I can be obtained by reacting with hydrogen chloride (JP-A-62-103087; JP-A-6210308)
8). The total yield of the two steps is only 65%. Moreover, formaldehyde is an irritant and may cause inflammation.

その取扱いには特別の注意を要する。Special care is required when handling it.

その他、  11を出発原料としないIの製造法も知ら
れている[例えば、  Eur、  J、  Med、
  Ch e m、   9. 483 (+ 974
 )などを参照]。
In addition, methods for producing I that do not use 11 as a starting material are also known [for example, Eur, J., Med.
Chem, 9. 483 (+974
), etc.].

C1発明が解決しようとする問題点 前述したように、いくつかの■の製造法が知られている
が、工程が長い、収率が低い、あるいは反応試薬が刺激
性であるなどの問題点を有している。本発明は安価なし
かも刺激性の無い原料を用い、工程数も短く9反応は簡
便で容易であり、 しかも高収率なIの製造法を提供す
るものである。
C1 Problems to be Solved by the Invention As mentioned above, several methods for producing (2) are known, but they suffer from problems such as long steps, low yields, and irritating reaction reagents. have. The present invention provides a method for producing I that uses inexpensive and non-irritating raw materials, has a short number of steps, is simple and easy to perform 9 reactions, and has a high yield.

D、  問題点を解決するための手段と作用本発明者ら
は、  IIに、酸存在下、1,3−ジオキソランを作
用させることにより、簡便に。
D. Means and Actions for Solving the Problems The present inventors simply reacted II with 1,3-dioxolane in the presence of an acid.

工程で、 しかも高収率で目的化合物(I)を製造でき
ることを見いだし2本発明を完結するに至った。
It was discovered that the target compound (I) could be produced in a high yield in a simple process, and the present invention was completed.

11および1,3−ジオキソランの反応は、酸存在下、
1,3−ジオキソランを溶媒として、あるいはその他の
反応に不活性な溶媒2例えば、 ジオキサン、エタノー
ル等を用い、さらには無溶媒で 加熱下に行なうことが
できる。酸きしては塩酸、臭化水素酸等の無機酸、メタ
ンスルホン酸等の有機酸を使用することができる。酸の
使用量は。
The reaction of 11 and 1,3-dioxolane is carried out in the presence of an acid,
The reaction can be carried out using 1,3-dioxolane as a solvent, or using other solvents inert to the reaction, such as dioxane, ethanol, etc., or without a solvent under heating. For acidification, inorganic acids such as hydrochloric acid and hydrobromic acid, and organic acids such as methanesulfonic acid can be used. What is the amount of acid used?

11に対して当量に触媒量を加えた量、  TIの塩を
使用する場合は触媒量が適当である。
The amount equivalent to 11 plus the catalytic amount is appropriate, and when using a TI salt, the catalytic amount is appropriate.

本発明により、 IIより1工程で簡便に容易に。According to the present invention, it is simpler and easier than II in one step.

しかも高収率で目的化合物(1)を製造することができ
る。
Furthermore, the target compound (1) can be produced in high yield.

本発明は塩酸チクロピジン製造のための中間体Iの製造
法として産業上極めて有用である。
The present invention is industrially extremely useful as a method for producing Intermediate I for producing ticlopidine hydrochloride.

E、  実施例 2−(2−チエニル)エチルアミン塩酸塩(10、0g
)、  1. 3−ジオキソラン(aO,Og)の混合
物に、濃塩酸(0,1m1)を加え。
E, Example 2-(2-thienyl)ethylamine hydrochloride (10.0 g
), 1. Concentrated hydrochloric acid (0.1 ml) was added to the mixture of 3-dioxolane (aO, Og).

7(]−75°Cで2.5時間加熱攪拌。放冷汲水を加
え、酢酸エチルにて洗浄。水層をNaOH−アルカリ性
とし、酢酸エチルで抽出。有機層を水洗。
7 (] Heat and stir at -75°C for 2.5 hours. Add cooled water and wash with ethyl acetate. The aqueous layer is made alkaline with NaOH and extracted with ethyl acetate. The organic layer is washed with water.

硫酸マグネシウムで乾燥。溶媒留去し、油状の4゜5、
 6. 7−チトラヒドロチエノ [3,2−c]ピリ
ジン(8,5g、  約100%)を得。
Dry with magnesium sulfate. The solvent was distilled off, leaving an oily 4°5.
6. 7-titrahydrothieno[3,2-c]pyridine (8.5 g, approximately 100%) was obtained.

NMR(CDCl2)δ:  2. 61−2. 92
 (2H,m)、  3. 12 (2H,td、  
J=5. 7゜J=1. 2)、  3. 90(2H
,t、  J=1. 2)6、  68  (IH,d
、   J=5.  4)、   7.  01(IH
,d、   J=5.  4)。
NMR (CDCl2) δ: 2. 61-2. 92
(2H, m), 3. 12 (2H, td,
J=5. 7°J=1. 2), 3. 90 (2H
,t, J=1. 2) 6, 68 (IH, d
, J=5. 4), 7. 01(IH
, d, J=5. 4).

遊離塩基をメタノール中で塩酸塩とし、メタツルを濃縮
後、アセトンをゆっくり加えて放置。
Convert the free base into a hydrochloride salt in methanol, concentrate the methazuru, then slowly add acetone and leave to stand.

析出結晶を濾取し、  4. 5. 6. 7−チトラ
ヒドロチエノ[3,2−cコピリジン塩酸塩の無色針状
晶、mp228−9° (9,1g、85%)を得。
4. Collect the precipitated crystals by filtration. 5. 6. Colorless needles of 7-titrahydrothieno[3,2-c-copyridine hydrochloride, mp 228-9° (9.1 g, 85%) were obtained.

F、  効果 実施例より明かな如く1本発明により、  IIより1
工程で簡便に容易に、しかも高収率で目的化合物(1)
を製造することができる。さらに2反応試薬である1、
3−ジオキソランは、溶媒として使用される化合物であ
り、刺激性もなく安全に取り扱うことができる。
F. As is clear from the effect examples, 1 according to the present invention, 1 from II
Target compound (1) can be obtained easily and easily in a high yield during the process.
can be manufactured. Furthermore, 2 reaction reagents 1,
3-dioxolane is a compound used as a solvent and can be safely handled without irritation.

本発明は塩酸チクロピジン製造のための中間体の製造法
として産業上極めて有用である。
The present invention is industrially extremely useful as a method for producing an intermediate for producing ticlopidine hydrochloride.

Claims (1)

【特許請求の範囲】 式 ▲数式、化学式、表等があります▼ で表される2−(2−チエニル)エチルアミンに1,3
−ジオキソランを反応させることを特徴とする、式 ▲数式、化学式、表等があります▼ で表わされるチエノピリジン誘導体およびその塩の製造
法。
[Claims] 2-(2-thienyl)ethylamine represented by the formula ▲There are mathematical formulas, chemical formulas, tables, etc.▼ 1,3
- A method for producing a thienopyridine derivative and its salt represented by the formula ▲There are mathematical formulas, chemical formulas, tables, etc.▼, characterized by reacting dioxolane.
JP12944290A 1990-05-18 1990-05-18 New production of thienopyridine derivative Pending JPH0426690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12944290A JPH0426690A (en) 1990-05-18 1990-05-18 New production of thienopyridine derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12944290A JPH0426690A (en) 1990-05-18 1990-05-18 New production of thienopyridine derivative

Publications (1)

Publication Number Publication Date
JPH0426690A true JPH0426690A (en) 1992-01-29

Family

ID=15009570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12944290A Pending JPH0426690A (en) 1990-05-18 1990-05-18 New production of thienopyridine derivative

Country Status (1)

Country Link
JP (1) JPH0426690A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0829482A3 (en) * 1996-09-04 1998-05-20 Poli Industria Chimica S.p.A. Method of making thieno-pyridine derivatives

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0829482A3 (en) * 1996-09-04 1998-05-20 Poli Industria Chimica S.p.A. Method of making thieno-pyridine derivatives
US6043368A (en) * 1996-09-04 2000-03-28 Poli Industria Chimica, S.P.A. Method of making thieno-pyridine derivatives

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