JP2562021B2 - 2- (4-Pyridylaminomethyl) -benzimidazole derivative having antiviral activity - Google Patents

2- (4-Pyridylaminomethyl) -benzimidazole derivative having antiviral activity

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Publication number
JP2562021B2
JP2562021B2 JP62013258A JP1325887A JP2562021B2 JP 2562021 B2 JP2562021 B2 JP 2562021B2 JP 62013258 A JP62013258 A JP 62013258A JP 1325887 A JP1325887 A JP 1325887A JP 2562021 B2 JP2562021 B2 JP 2562021B2
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Japan
Prior art keywords
mmol
compound
reduced pressure
under reduced
nmr δppm
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.)
Expired - Fee Related
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JP62013258A
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Japanese (ja)
Other versions
JPS63179870A (en
Inventor
信勝 佐藤
晴夫 栗山
昌信 吾郷
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Maruishi Pharmaceutical Co Ltd
Original Assignee
Maruishi Pharmaceutical Co Ltd
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Application filed by Maruishi Pharmaceutical Co Ltd filed Critical Maruishi Pharmaceutical Co Ltd
Priority to JP62013258A priority Critical patent/JP2562021B2/en
Priority to CA000541384A priority patent/CA1279648C/en
Priority to US07/071,251 priority patent/US4818761A/en
Priority to EP87109931A priority patent/EP0252507B1/en
Priority to DE8787109931T priority patent/DE3765475D1/en
Publication of JPS63179870A publication Critical patent/JPS63179870A/en
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Publication of JP2562021B2 publication Critical patent/JP2562021B2/en
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Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、普通感冒の主因とされるある種のウイル
ス、例えばヒトライノウイルス群やエンテロウイルス群
に対し活性を期待される新規な2−(4−ピリジルアミ
ノメチル)−ベンズイミダゾール誘導体を合成し、これ
らの内でイン ビトロ及びイン ビボの第一次的スクリ
ーニング試験において活性を認められた化合物を提供す
ることに関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is a novel 2- (2), which is expected to be active against certain viruses that are the main cause of common cold, such as human rhinovirus group and enterovirus group. The present invention relates to the synthesis of 4-pyridylaminomethyl) -benzimidazole derivatives, and to provide compounds among these, which are found to be active in the in vitro and in vivo primary screening tests.

〔従来の公知々識〕 ベンズイミダゾール誘導体の内のある種の化合物にウ
イルス増殖阻害作用があることは、1947年にザ ジャー
ナル オブ イムノロジー:第55巻、345頁を始めとし
て数多く発表され、特に2−(アニリノメチル)−ベン
ズイミダゾール誘導体については、その合成法がケミカ
ル アブストラクツ誌:第59巻、3906fに述べられ、そ
の生理活性については、水野らが薬学雑誌:第85巻第10
号、926〜935頁(1965年)に発表しているところであ
る。
[Prior art knowledge] The fact that certain compounds among benzimidazole derivatives have a virus growth inhibitory effect was widely announced in 1947, starting with The Journal of Immunology: Volume 55, page 345, especially 2 Regarding the-(anilinomethyl) -benzimidazole derivative, its synthetic method is described in Chemical Abstracts: Volume 59, 3906f, and its physiological activity is described in Mizuno et al .: Pharmaceutical Journal: Volume 85, Volume 10.
Issue, pages 926-935 (1965).

そして、本発明者らも先に: なる2−(4−ピリジルアミノメチル)−ベンズイミダ
ゾール誘導体において、R置換基として水素原子、5
(6)位にクロル,ベンゾイル,メトキシ,メチル,ニ
トロ,アミノ,トリフルオロメチル,エチル基の置換し
たもの、4(7)位にメチル基の置換したもの、更に5
位,6位にクロルまたはメチル基が置換した化合物を新た
に合成して、その第一次的ウイルス活性のスクリーニン
グ試験成績と共に昭和60年7月15日付けで特願昭60−15
6.680号をもって特許出願を行なった。
And, the present inventors also previously: In the following 2- (4-pyridylaminomethyl) -benzimidazole derivative, a hydrogen atom as an R substituent is 5
Substituted with chloro, benzoyl, methoxy, methyl, nitro, amino, trifluoromethyl, ethyl group at the (6) position, 4 substituted with methyl group at the (7) position, and further 5
A compound having a chloro or methyl group substituted at the 6- and 6-positions was newly synthesized, and the results of the screening test for its primary viral activity were filed on July 15, 1985, in Japanese Patent Application No. 60-15.
The patent application was filed with No. 6.680.

ついで、本発明者らは: なる2−(4−ピリジルアミノメチル)−ベンズイミダ
ゾール誘導体において、X置換基として水素原子,メチ
ル,エチル,n−またはiso−プロピル,プロピレン,n−
ブチル,n−ペンチル,シクロ−ペンチル,n−ヘキシル,n
−オクチル,2−ヒドロキシエチル,フェニル,p−トリ
ル,p−フルオロフェニル,ベンジル基よりなる群より選
ばれたいずれかの基が置換したもの、又、R置換基とし
て水素原子,−5(6)−置換のブロム,フルオロ,ヨ
ード,エトキシ,n−またはiso−プロピル,n−またはt
−ブチル,フェニル,−4(7)−メチル−6(5)−
クロル,−4(7)−クロル−6(5)−メチル,−4
(7)−クロル−6(5)−クロル,−5(6)−メチ
ル−6(5)−ブロム,−5(6)−メチル−6(5)
−クロル,−5(6)−メチル−6(5)−フルオロ,
−5(6)−エチル−6(5)−ブロム,−5(6)−
エチル−6(5)−クロル,−5(6)−メトキシ−6
(5)−クロル,−5,6−ジメトキシ,5(6)−フルオ
ロ−6(5)−クロル,−5位置換のクロル,メチル,
エチル,−6位置換のクロル,メチル,エチル,フルオ
ロ基よりなる群より選ばれたいずれかの基が置換した化
合物を新たに合成して、その第一次的ウイルス活性のス
クリーニング試験成績と共に昭和61年7月11日付けで特
願昭61−164.324号をもって特許出願を行なった。
We then: In the following 2- (4-pyridylaminomethyl) -benzimidazole derivative, a hydrogen atom as an X substituent, methyl, ethyl, n- or iso-propyl, propylene, n-
Butyl, n-pentyl, cyclo-pentyl, n-hexyl, n
-Octyl, 2-hydroxyethyl, phenyl, p-tolyl, p-fluorophenyl, substituted with any group selected from the group consisting of benzyl group, hydrogen atom as R substituent, -5 (6 ) -Substituted bromo, fluoro, iodo, ethoxy, n- or iso-propyl, n- or t
-Butyl, phenyl, -4 (7) -methyl-6 (5)-
Chlor, -4 (7) -chloro-6 (5) -methyl, -4
(7) -chloro-6 (5) -chloro, -5 (6) -methyl-6 (5) -bromo, -5 (6) -methyl-6 (5)
-Chloro, -5 (6) -methyl-6 (5) -fluoro,
-5 (6) -ethyl-6 (5) -bromo, -5 (6)-
Ethyl-6 (5) -chloro, -5 (6) -methoxy-6
(5) -chloro, -5,6-dimethoxy, 5 (6) -fluoro-6 (5) -chloro, -5-substituted chloro, methyl,
A compound in which any of the groups selected from the group consisting of ethyl, -6-substituted chloro, methyl, ethyl, and fluoro groups was substituted was newly synthesized, and the results of screening tests for its primary viral activity were shown together with the results of the screening test. On July 11, 1986, we filed a patent application with Japanese Patent Application No. 61-164.324.

本発明は前特許出願発明のR基およびX基の種類を更
に増やしたものを提供し、前特許出願発明を拡張させた
ものに相当する。
The present invention provides a further increase in the types of R groups and X groups of the prior patent application invention, and corresponds to an extension of the prior patent application invention.

〔本発明の解決手段〕[Means for Solving the Present Invention]

まず、ベンズイミダゾール環上の置換基の位置の表現
法について触れれば、 上式上の第1位と第3位の窒素原子は、そのいずれにで
も水素原子が置換できると考えてよく、また第5位に置
換基を有する場合は、第6位に置換したものと互変異性
の関係にあり、5(6)という表現法が認められてお
り、本明細書でもこれに倣うものである。
First, referring to the expression of the position of the substituent on the benzimidazole ring, It can be considered that the nitrogen atom at the 1st position and the 3rd position in the above formula can be replaced by a hydrogen atom at any of them, and when a substituent is at the 5th position, it is considered that the hydrogen atom is substituted at the 6th position. There is a tautomeric relationship, and the expression 5 (6) is accepted, and this specification is also followed.

本発明の新規ベンズイミダゾール誘導体は下記の一般
式で表わすことができる: 式中、Xはイソブチル、イソアミル、3−ヒドロキシプ
ロピル、4−ヒドロキシブチル、3,3−ジメチル−2−
オキソブチル、2−エトキシエチル、2−アセトキシエ
トキシメチル、3−フェニルプロピル、o−フルオロフ
ェニル、m−フルオロフェニル、p−クロロフェニル、
p−ブロモフェニル、p−ヨードフェニル、o−トリ
ル、m−トリル、p−トリフルオロメチルフェニル、o
−エチルフェニル、p−エチルフェニル、o−メトキシ
フェニル、p−メトキシフェニル、3,4−ジクロロフェ
ニル、3,4−ジメチルフェニル、3−フルオロ−4−メ
チルフェニル、2,4,6−トリメチルフェニル、または2
−チアゾリルを意味し、そしてRは水素原子を意味し、
またはXは水素原子をそしてRはフェノキシを意味す
る。本発明はまた、前記ベンズイミダゾール誘導(I)
の酸付加塩をも含む。
The novel benzimidazole derivatives of the present invention can be represented by the general formula: In the formula, X is isobutyl, isoamyl, 3-hydroxypropyl, 4-hydroxybutyl, 3,3-dimethyl-2-
Oxobutyl, 2-ethoxyethyl, 2-acetoxyethoxymethyl, 3-phenylpropyl, o-fluorophenyl, m-fluorophenyl, p-chlorophenyl,
p-bromophenyl, p-iodophenyl, o-tolyl, m-tolyl, p-trifluoromethylphenyl, o
-Ethylphenyl, p-ethylphenyl, o-methoxyphenyl, p-methoxyphenyl, 3,4-dichlorophenyl, 3,4-dimethylphenyl, 3-fluoro-4-methylphenyl, 2,4,6-trimethylphenyl, Or 2
-Means thiazolyl, and R means a hydrogen atom,
Or X means a hydrogen atom and R means phenoxy. The present invention also provides the benzimidazole-derived (I)
Also included are acid addition salts of.

本発明の上記した、〔I〕式の誘導体の内、後述する
インビトロの抗ウイルス活性試験において、多少の活性
が認められ、今後一層の発展が期待される化合物を表示
すれば次表の通りである。
Among the above-mentioned derivatives of the formula [I] of the present invention, compounds which have some activity in the in vitro antiviral activity test described below and are expected to be further developed are shown in the following table. is there.

注:化合物No.27は本発明化合物ではないが、参考とし
て示した。
Note: Compound No. 27 is not the compound of the present invention, but is shown as a reference.

以下に本発明の化合物の若干について、それらの製法
を説明する: 実施例1 化合物No.2の製造 (イ)N−イソアミル−o−フェニレンジアミンの製造 o−ニトロアセトアニリド(7.2g、40ミリモル)をア
セトン(28ml)に溶解し、冷却下、水酸カリウム粉末
(2.2g、39ミリモル)を加える。これに、1−ブロモ−
3−メチルブタン(6.0g、40ミリモル)を加え、60℃で
5時間還流する。還流後、反応液を放冷し、無機物を
過、液を減圧濃縮する。これをクロロホルムで抽出し
水洗、無水硫酸ナトリウムで乾燥後、液を減圧濃縮、
得られた油状物質(9.8g、39ミリモル)に濃塩酸(39m
l、390ミリモル)を加え120℃で3時間還流する。還流
後、反応液を放冷しクロロホルムで抽出、水洗、炭酸水
素ナトリウム水溶液で洗浄し水洗乾燥後、減圧濃縮し油
状物質(6.4g、30.7ミリモル)を得る。さらに、これを
鉄粉(17.1g、306ミリモル)エタノール(24.5ml)水
(6.2ml)濃塩酸(0.3ml、300ミリモル)の混液に加
え、1.5時間還流する。還流後、熱時過し、減圧濃
縮、これに石油エーテルを加え可溶物を取し、液を
減圧濃縮する。これをクロロホルムに溶解し、シリカゲ
ル処理し、暫時撹拌後に過し液を減圧濃縮する。
Hereinafter, some of the compounds of the present invention will be described with respect to their production methods: Example 1 Production of Compound No. 2 (a) Production of N-isoamyl-o-phenylenediamine o-nitroacetanilide (7.2 g, 40 mmol) Is dissolved in acetone (28 ml) and potassium hydroxide powder (2.2 g, 39 mmol) is added under cooling. To this, 1-bromo-
3-Methylbutane (6.0 g, 40 mmol) is added and the mixture is refluxed at 60 ° C for 5 hours. After refluxing, the reaction solution is allowed to cool, excess inorganic substances are added, and the solution is concentrated under reduced pressure. This is extracted with chloroform, washed with water, dried over anhydrous sodium sulfate, and concentrated under reduced pressure.
To the obtained oily substance (9.8 g, 39 mmol) was added concentrated hydrochloric acid (39 m
(1, 390 mmol) and refluxed at 120 ° C. for 3 hours. After refluxing, the reaction mixture was allowed to cool, extracted with chloroform, washed with water, washed with aqueous sodium hydrogen carbonate solution, dried with water, and concentrated under reduced pressure to give an oily substance (6.4 g, 30.7 mmol). Further, this is added to a mixture of iron powder (17.1 g, 306 mmol) ethanol (24.5 ml) water (6.2 ml) concentrated hydrochloric acid (0.3 ml, 300 mmol), and the mixture is refluxed for 1.5 hours. After refluxing, the mixture was heated under heating and concentrated under reduced pressure. Petroleum ether was added to this to remove soluble matter, and the liquid was concentrated under reduced pressure. This is dissolved in chloroform, treated with silica gel, stirred for a while, and the filtrate is concentrated under reduced pressure.

(ロ)1−イソアミル−2−クロルメチル−ベンズイミ
ダゾールの製造 N−イソアミル−o−フェニレンジアミン(3.5g、1
9.7ミリモル)を塩酸(4N、20ml)に溶解し、モノクロ
ル酢酸(2.8g、29.6ミリモル)を加え2時間加熱還流、
放冷後、アンモニア水で弱塩基性とし、析出した油状沈
澱を酢酸エチルで抽出、水洗、乾燥後減圧濃縮する。
(B) Preparation of 1-isoamyl-2-chloromethyl-benzimidazole N-isoamyl-o-phenylenediamine (3.5 g, 1
9.7 mmol) was dissolved in hydrochloric acid (4N, 20 ml), monochloroacetic acid (2.8 g, 29.6 mmol) was added, and the mixture was heated under reflux for 2 hours.
After allowing to cool, the mixture is made weakly basic with aqueous ammonia, and the precipitated oily precipitate is extracted with ethyl acetate, washed with water, dried and concentrated under reduced pressure.

(ハ)1−イソアミル−2−(4−ピリジルアミノメチ
ル)−ベンズイミダゾール・一塩酸塩の製造 前工程で得られた1−イソアミル−2−クロルメチル
−ベンズイミダゾール(2.9g、12.2ミリモル)と4−ア
ミノピリジン(3.9g、22.5ミリモル)を混合し、エタノ
ール(24ml)を加え、加熱還流し、反応液を減圧濃縮
後、アセトンより結晶化する。過後、アセトン洗浄、
乾燥物(2.9g、9.0ミリモル)を得、エタノールより再
結晶(活性炭処理)し目的物(1.5g、4.5ミリモル)を
得る。
(C) Preparation of 1-isoamyl-2- (4-pyridylaminomethyl) -benzimidazole monohydrochloride 1-isoamyl-2-chloromethyl-benzimidazole (2.9 g, 12.2 mmol) obtained in the previous step and 4- Aminopyridine (3.9 g, 22.5 mmol) is mixed, ethanol (24 ml) is added, the mixture is heated under reflux, the reaction mixture is concentrated under reduced pressure, and crystallized from acetone. After that, wash with acetone,
The dried product (2.9 g, 9.0 mmol) is obtained and recrystallized from ethanol (treated with activated carbon) to obtain the desired product (1.5 g, 4.5 mmol).

元素分析(%) C18H22N4・HCl1/2H2Oとして 実験値 C63.05 H7.18 N16.57 計算値 C63.60 H7.12 N16.48 実施例2 化合物No.10の製造 (イ)N−(3−フルオロフェニル)−o−フェニレン
ジアミンの製造 o−ニトロアニリン(2.8g、20.3ミリモル)と炭酸カ
リウム(0.9g、6.5ミリモル)よう化銅(0.78g、4.1ミ
リモル)及び1−ブロモ−3−フルオロベンゼン(15.4
g、88.0ミリモル)を混合し、165℃で24時間加熱還流す
る。還流後、反応物を水蒸気蒸留し、残留物に酢酸エチ
ルを加える。不溶物を過後、酢酸エチル層を分液し、
水洗、無水硫酸ナトリウムで乾燥後、減圧濃縮する。溶
媒にクロロホルムを用いてこれをカラムクロマト分離
(1.2g、5.2ミリモル)を得る。さらにこれを、鉄粉
(2.9g、52ミリモル)エタノール(4.2ml)水(1ml)濃
塩酸(0.05ml、50ミリモル)の混合液に加え、1時間還
流する。還流後、熱時過し、減圧濃縮する。
Elemental analysis (%) Experimental value as C 18 H 22 N 4 · HCl1 / 2H 2 O C63.05 H7.18 N16.57 Calculated value C63.60 H7.12 N16.48 Example 2 Production of compound No. 10 ( B) Preparation of N- (3-fluorophenyl) -o-phenylenediamine o-Nitroaniline (2.8 g, 20.3 mmol) and potassium carbonate (0.9 g, 6.5 mmol) copper iodide (0.78 g, 4.1 mmol) and 1 -Bromo-3-fluorobenzene (15.4
g, 88.0 mmol) and heated to reflux at 165 ° C. for 24 hours. After refluxing, the reaction is steam distilled and ethyl acetate is added to the residue. After passing the insoluble matter, the ethyl acetate layer was separated,
Wash with water, dry over anhydrous sodium sulfate, and concentrate under reduced pressure. This is subjected to column chromatographic separation (1.2 g, 5.2 mmol) using chloroform as the solvent. Further, this is added to a mixed solution of iron powder (2.9 g, 52 mmol) ethanol (4.2 ml) water (1 ml) concentrated hydrochloric acid (0.05 ml, 50 mmol), and the mixture is refluxed for 1 hour. After refluxing, heat and concentrate under reduced pressure.

(ロ)1−(3−フルオロフェニル)−2−クロルメチ
ル−ベンズイミダゾールの製造 N−(3−フルオロフェニル)−o−フェニレンジア
ミン(0.8g、4ミリモル)をポリリン酸エステル(2.7
g)と混合し、加熱後、モノクロル酢酸(0.4g、4.2ミリ
モル)を加え、撹拌し、130℃で1時間加熱する。反応
物に水を加え、ポリリン酸エステルを分解後炭酸ナトリ
ウムで中和し、油状沈澱をクロロホルムで抽出する。水
洗、乾燥後減圧濃縮する。
(B) Preparation of 1- (3-fluorophenyl) -2-chloromethyl-benzimidazole N- (3-fluorophenyl) -o-phenylenediamine (0.8 g, 4 mmol) was added to polyphosphoric acid ester (2.7
g) and after heating, add monochloroacetic acid (0.4 g, 4.2 mmol), stir and heat at 130 ° C. for 1 hour. Water is added to the reaction product, the polyphosphate ester is decomposed and then neutralized with sodium carbonate, and the oily precipitate is extracted with chloroform. Wash with water, dry and concentrate under reduced pressure.

(ハ)1−(3−フルオロフェニル)−2−(4−ピリ
ジルアミノメチル)−ベンズイミダゾール・一塩酸塩の
製造 前工程で製した1−(3−フルオロフェニル)−2−
クロルメチル−ベンズイミダゾール(1.0g、4ミリモ
ル)とアミノピリジン(1.3g、7.4ミリモル)を混合
し、エタノール(8ml)に溶解し、1.5時間加熱還流す
る。反応液を減圧濃縮しアセトンより結晶化する(0.6
g、1.65ミリモル)。これをエタノール−アセトンより
再結晶(活性炭処理)(0.3g、0.82ミリモル)を得る。
(C) Preparation of 1- (3-fluorophenyl) -2- (4-pyridylaminomethyl) -benzimidazole monohydrochloride 1- (3-fluorophenyl) -2-prepared in the previous step
Chloromethyl-benzimidazole (1.0 g, 4 mmol) and aminopyridine (1.3 g, 7.4 mmol) are mixed, dissolved in ethanol (8 ml) and heated under reflux for 1.5 hours. The reaction solution is concentrated under reduced pressure and crystallized from acetone (0.6
g, 1.65 mmol). This was recrystallized from ethanol-acetone (treated with activated carbon) to obtain (0.3 g, 0.82 mmol).

元素分析(%) C19H15N4FHCl・1/2H2Oとして 実験値 C62.15 H5.04 N15.28 計算値 C62.72 H4.71 N15.40 実施例3 化合物No.27の製造 (イ)2−アニリノ−−4−エチル−5−クロルアニリ
ンの製造 3−エチルアニリン(4.7g、39ミリモル)に無水酢酸
(21.6g、212ミリモル)を加え、冷却下、硝酸(70%、
5.5ml)を徐々に加える。反応液を室温で1時間撹拌
し、これを氷水(150ml)に注加し、析出した油状沈澱
をクロロホルムで抽出する。水洗、炭酸水素ナトリウム
水溶液で洗浄後、水洗、乾燥、減圧濃縮する。これを酢
酸(33ml)に溶解し、氷冷しながら塩素ガスをバブリン
グする。反応液を35〜45℃で3時間撹拌し、酸性亜流酸
ソーダ(2.1g)を氷水(210ml)に溶解し、これに反応
液を注加する。生じた油状沈澱をクロロホルムで抽出、
水洗、炭酸水素ナトリウム水溶液で洗浄後、水洗、乾
燥、減圧濃縮する。得られた油状物質(10.5g)にグラ
イゼンアルカリ(20ml)を加え、15分間加熱後、湯(20
ml)を注加し、再び15分間加熱し、反応液を急冷、析出
した結晶を過する。結晶はクロロホルムに溶解し、水
洗、乾燥後減圧濃縮、液はクロロホルムで抽出し、水
洗、乾燥、減圧濃縮する。
Elemental analysis (%) Experimental value as C 19 H 15 N 4 FHCl · 1 / 2H 2 O C62.15 H5.04 N15.28 Calculated value C62.72 H4.71 N15.40 Example 3 Production of compound No. 27 (A) Production of 2-anilino-4-ethyl-5-chloroaniline Acetic anhydride (21.6 g, 212 mmol) was added to 3-ethylaniline (4.7 g, 39 mmol), and nitric acid (70%, 70%,
5.5 ml) is gradually added. The reaction solution is stirred at room temperature for 1 hour, poured into ice water (150 ml), and the oily precipitate that has precipitated is extracted with chloroform. After washing with water and an aqueous solution of sodium hydrogen carbonate, washing with water, drying, and concentration under reduced pressure. This is dissolved in acetic acid (33 ml), and chlorine gas is bubbled while cooling with ice. The reaction solution is stirred at 35 to 45 ° C. for 3 hours, acidic sodium sulfite (2.1 g) is dissolved in ice water (210 ml), and the reaction solution is added thereto. The resulting oily precipitate was extracted with chloroform,
After washing with water and an aqueous solution of sodium hydrogen carbonate, washing with water, drying, and concentration under reduced pressure. Greisen alkali (20 ml) was added to the obtained oily substance (10.5 g), and the mixture was heated for 15 minutes and then hot water (20 ml)
ml) is added and the mixture is heated again for 15 minutes, the reaction solution is rapidly cooled, and the precipitated crystals are passed. The crystals are dissolved in chloroform, washed with water, dried and concentrated under reduced pressure. The liquid is extracted with chloroform, washed with water, dried and concentrated under reduced pressure.

得られた油状物質(6.0g、30ミリモル)と炭酸カリウ
ム(1.4g、10ミリモル)よう化銅(1.2g、6ミリモル)
及びブロムベンゼン(23.6g、150ミリモル)を混合し、
165℃で24時間還流、還流後、反応液を放冷し、これを
水蒸気蒸留する。残留物に酢酸エチルを加え、過し、
酢酸エチル層を分液し、水洗、乾燥、減圧濃縮する。こ
れをクロロホルムに溶解し、シリカゲル処理し暫時撹拌
後に過し、液を減圧濃縮する。
The oily substance obtained (6.0 g, 30 mmol) and potassium carbonate (1.4 g, 10 mmol) copper iodide (1.2 g, 6 mmol)
And brombenzene (23.6 g, 150 mmol) were mixed,
After refluxing at 165 ° C. for 24 hours and refluxing, the reaction solution is allowed to cool and steam-distilled. Add ethyl acetate to the residue, pass,
The ethyl acetate layer is separated, washed with water, dried and concentrated under reduced pressure. This is dissolved in chloroform, treated with silica gel, stirred for a while and then allowed to pass, and the solution is concentrated under reduced pressure.

さらに、これを鉄粉(10.1g、180ミリモル)エタノー
ル(15ml)水(3.8ml)濃塩酸(0.18ml、180ミリモル)
の混液に加え、1.5時間還流する。還流後熱時過し、
液を減圧濃縮する。
Furthermore, iron powder (10.1 g, 180 mmol) ethanol (15 ml) water (3.8 ml) concentrated hydrochloric acid (0.18 ml, 180 mmol)
Add to the mixture and reflux for 1.5 hours. After reflux, heat is passed,
The solution is concentrated under reduced pressure.

(ロ)1−フェニル−2−クロルメチル−5−クロル−
6−エチルベンズイミダゾールの製造 2−アニリノ−4−エチル−5−クロルアニリン(3.
3g、13.4ミリモル)をポリリン酸エステル(8.9g)と混
合し、加熱後、モノクロル酢酸(1.3g、13.4ミリモル)
を加え撹拌し、130℃で1時間加熱する。反応物に水を
加え、ポリリン酸エステルを分解後、炭酸ナトリウムで
中和し、油状沈澱をクロロホルムで抽出する。水洗、乾
燥、これにシリカゲルを加え暫時撹拌後に過し、液
を減圧濃縮する。
(B) 1-phenyl-2-chloromethyl-5-chloro-
Preparation of 6-ethylbenzimidazole 2-anilino-4-ethyl-5-chloroaniline (3.
3 g, 13.4 mmol) was mixed with polyphosphate ester (8.9 g) and after heating, monochloroacetic acid (1.3 g, 13.4 mmol)
Is stirred and heated at 130 ° C. for 1 hour. Water is added to the reaction product to decompose the polyphosphate ester, which is then neutralized with sodium carbonate, and the oily precipitate is extracted with chloroform. After washing with water and drying, adding silica gel to the mixture, stirring for a while, and then passing it through, the solution is concentrated under reduced pressure.

(ハ)1−フェニル−2−(4−ピリジルアミノメチ
ル)−5−クロル−6−エチルベンズイミダゾール・一
塩酸塩の製造 前工程で製した1−フェニル−2−クロルメチル−5
−クロル−6−エチルベンズイミダゾール(1.7g、5.5
ミリモル)と4−アミノピリジン(1.8g、10.3ミリモ
ル)を混合し、エタノール(10.8ml)に溶解し、1.5時
間加熱還流する。還流後、沈澱を過し、液を減圧濃
縮しアセトンより結晶化する(1.0g、2.35ミリモル)。
これをエタノールより再結晶(活性炭処理)(0.35g、
0.82ミリモル)を得る。
(C) Preparation of 1-phenyl-2- (4-pyridylaminomethyl) -5-chloro-6-ethylbenzimidazole monohydrochloride 1-phenyl-2-chloromethyl-5 prepared in the previous step
-Chloro-6-ethylbenzimidazole (1.7 g, 5.5
Mmol) and 4-aminopyridine (1.8 g, 10.3 mmol) are mixed, dissolved in ethanol (10.8 ml) and heated under reflux for 1.5 hours. After refluxing, the precipitate was passed, the solution was concentrated under reduced pressure and crystallized from acetone (1.0 g, 2.35 mmol).
This was recrystallized from ethanol (activated carbon treatment) (0.35g,
0.82 mmol).

元素分析(%) C21H19N4Cl・3/2H2Oとして 実験値 C58.98 H4.84 N13.27 計算値 C59.16 H5.44 N13.14 〔発明の効果〕 本発明の各化合物の抗ピコルナウイルス活性の一端は
下記の実験により示される: 実験方法:抗ピコルナウイルス活性試験 被検化合物の抗ウイルス活性はプラーク減少法(PR
A)およびウイルス細胞変性効果阻害法(CPE.IA)によ
り試験した。
Each elemental analysis (%) C 21 H 19 N 4 Cl · 3 / 2H 2 O as an experimental value C58.98 H4.84 N13.27 Calculated C59.16 H5.44 N13.14 [Effect of the Invention The present invention One part of the anti-picornavirus activity of the compound is shown by the following experiment: Experimental method: anti-picornavirus activity test The antiviral activity of the test compound was determined by the plaque reduction method (PR
A) and viral cytopathic effect inhibition method (CPE.IA).

すなわち、PRAは赤毛ザル腎由来株化細胞(LLC−M
K2)またはヒト子宮頚癌由来株化細胞(HeLa)を各々5
%新生仔牛血清(NCS)、7%牛胎児血清(FBS)加イー
グルMEM培養液(E.MEM)を用いてプラスチックシャーレ
(直径60mm)に37℃、3日間培養して一様な単層を形成
させ、約100プラーク形成単位のウイルスを接種した。
1時間吸着後ウイルス液を除去し、リン酸緩衝食塩水で
細胞面を洗浄した後、種々の濃度の被検化合物と0.9%
寒天を含むE.MEMを重層した。ヒトライノウイルス14型
(HRV14)およびエンテロウイルス70型(EV70)は33
℃、ポリオウイルス2型(Polio2)およびコクサッキー
ウイルスB4型(CB4)37℃で培養した。HRV14は感染後4
日目に、他は3日目に中性紅でウイルス感染細胞を染色
し、形成されたプラーク数を算定した。
That is, PRA is a red-haired monkey kidney-derived cell line (LLC-M
K 2 ) or human cervical cancer cell line (HeLa) 5
% Neonatal Calf Serum (NCS), 7% Fetal Bovine Serum (FBS) in Eagle's MEM Culture Solution (E.MEM) was used to culture a plastic dish (60 mm in diameter) at 37 ℃ for 3 days to form a uniform monolayer. Formed and inoculated with approximately 100 plaque forming units of virus.
After adsorbing for 1 hour, the virus solution was removed, and the cell surface was washed with phosphate buffered saline.
E.MEM containing agar was overlaid. 33 for human rhinovirus type 14 (HRV14) and enterovirus type 70 (EV70)
The cells were cultured at 37 ° C at 37 ° C, poliovirus type 2 (Polio2) and coxsackievirus type B4 (CB4). HRV14 is 4 after infection
Virus-infected cells were stained with neutral red on day 3 and others on day 3 and the number of plaques formed was counted.

また後者は、5%NCS加E.MEMあるいは7%FBS加E.MEM
に夫々LLC−MK2、HeLa細胞を2×105個/mlになるように
浮遊させ96ウエルマイクロテストプレートの各ウエルに
0.1mlづつ播き、37℃、24時間培養後培養液を除去して1
00〜300TCID50のウイルスを接種した。1時間ウイルス
を吸着させた後、ウイルス液を除去して段階稀釈した被
検化合物を含むE.MEMを0.1ml/ウエルづつ加えてウイル
スよって起る細胞変性効果(CPE)をウイルス感染後5
日目まで観察した。吸着および培養はHRV14およびEV70
は33℃、Polio2およびCB4は37℃で行った。
The latter is 5% NCS added E.MEM or 7% FBS added E.MEM.
LLC-MK 2 and HeLa cells were suspended at 2 × 10 5 cells / ml in each well of each 96-well microtest plate.
Seed 0.1 ml each, incubate at 37 ℃ for 24 hours, remove the culture solution, and
The virus was inoculated with 00 to 300 TCID50. After adsorbing the virus for 1 hour, remove the virus solution and add 0.1 ml / well of E.MEM containing the test compound that was diluted serially to obtain the cytopathic effect (CPE) caused by the virus.
I observed until the first day. HRV14 and EV70 for adsorption and culture
At 33 ° C and Polio2 and CB4 at 37 ° C.

抗ウイルス活性は、前者の場合にはプラーク形成を、
後者の場合にはCPEを夫々50%阻害するのに必要な最小
有効濃度をIC50で示した。
Antiviral activity is associated with plaque formation in the former case,
In the latter case, the IC50 represents the minimum effective concentration required to inhibit CPE by 50%, respectively.

また、細胞に対する毒性は後者と同様の処理を行った
非感染細胞の形態変化を顕微鏡下で化合物添下後5日目
まで観察して50%毒性を示す濃度をCD50とした。
Regarding the toxicity to cells, the morphological change of non-infected cells treated in the same manner as the latter was observed under a microscope until 5 days after compound addition, and the concentration showing 50% toxicity was defined as CD50.

さらにCD50/IC50を化学療法係数(CI)として表し選
択毒性の指標とした。
Furthermore, CD50 / IC50 was expressed as a chemotherapy coefficient (CI) and used as an index of selective toxicity.

その結果を下記表1、2に示す。大部分の化合物に抗
ピコルナウイルス活性が認められ、これらのウイルスの
増殖を特異的に阻害することが実証された。
The results are shown in Tables 1 and 2 below. Most of the compounds had anti-picornavirus activity, demonstrating specific inhibition of growth of these viruses.

かくして、本発明に係る新規化合物群の内の若干のも
のについての臨床的応用については現在研究中である
が、現時点においては主として乳幼児、小児の流行性感
冒の予防及至は治療薬としての応用が強く期待される。
すなわち、本発明の化合物を有効成分として単独又は他
剤と配合させ、これに常用の補助剤、賦形剤を加えて、
例えば錠剤として経口投与、シロップ剤または注射剤あ
るいは座剤として適用等が考えられる。
Thus, the clinical application of some of the novel compounds according to the present invention is currently under study, but at the present time, it is mainly applied to the prevention of epidemic common cold in infants and children as a therapeutic drug. Strongly expected.
That is, the compound of the present invention as an active ingredient alone or in combination with other agents, to which the usual auxiliary agents, excipients are added,
For example, oral administration as a tablet, application as a syrup or injection, or a suppository can be considered.

以下に本発明の各化合物のIR値及びNMR値を記す: 化合物No.1 IRνmaxcm-1;3340、3120、2960、1655、1550、1460、13
85、1320、1210、835、725 NMR δppm;0.9(6H)、1.9〜2.3(1H)、4.2(2H)、5.
9(2H)、7.0(2H)、7.2〜7.9(4H)、8.4(2H) 化合物No.2 IRνmaxcm-1;3330、3100、2960、1650、1550、1460、13
85、1210、840、730 NMR δppm;1.0(6H)、1.3〜1.8(3H)、4.1〜4.6(2
H)、6.0(2H)、7.1(2H)、7.2〜7.8(4H)、8.4(2
H) 化合物No.3 IRνmaxcm-1;3320、3150、1660、1540、1460、1430、12
20、1190、840、760 NMR δppm;1.9(2H)、3.5(2H)、4.4(2H)、5.8(2
H)、7.0(2H)、7.2〜7.4(2H)、7.5〜7.8(2H)、8.
3(2H) 化合物No.4 IRνmaxcm-1;3300、3150、1645、1540、1460、1310、12
15、1200、1060、840、735 NMR δppm;1.1〜2.1(4H)、3.3〜3.7(2H)、4.1〜4.6
(2H)、5.9(2H)、7.0(2H)、7.2〜8.0(4H)、8.3
(2H) 化合物No.5 IRνmaxcm-1;3360、3180、1660、1540、1500、1410、12
90、1210、500 NMR δppm;0.8(9H)、4.9(2H)、5.7(2H)、6.9(2
H)、7.4〜8.1(4H)、8.3(2H) 化合物No.6 IRνmaxcm-1;3280、3100、1645、1540、1460、1380、12
00、1110、840、740 NMR δppm;1.0(3H)、3.2〜3.5(2H)、3.5〜3.9(2
H)、4.4〜4.8(2H)、5.9(2H)、7.1(2H)、7.2〜7.
9(4H)、8.4(2H) 化合物No.7 IRνmaxcm-1;3300、3000、1740、1620、1460、1200、10
30、740 NMR δppm;2.2(3H)、2.9(2H)、3.2〜3.8(2H)、4.
3(2H)、5.7(2H)、7.0(2H)、7.1〜7.8(4H)、8.0
〜8.5(2H) 化合物No.8 IRνmaxcm-1;3110、1660、1540、1460、1340、1205、82
5、745 NMR δppm;1.8〜2.4(2H)、2.7〜2.9(2H)、4.4(2
H)、5.9(2H)、7.0(2H)、7.3〜7.8(9H)、8.2(2
H) 化合物No.9 IRνmaxcm-1;3470、3320、3170、1655、1530、1500、13
10、1200、1015、845、770、730 NMR δppm;5.7(2H)、7.0(2H)、7.2〜7.6(3H)、7.
6〜8.0(5H)、8.3(2H) 化合物No.10 IRνmaxcm-1;3330、3170、1660、1610、1530、1490、13
10、1205、850、735 NMR δppm;5.8(2H)、7.0(2H)、7.3〜7.5(3H)、7.
5〜8.0(5H)、8.3(2H) 化合物No.11 IRνmaxcm-1;3010、1650、1540、1485、1380、1195、10
80、830、745、490 NMR δppm;5.8(2H)、7.0(2H)、7.2〜7.4(3H)、7.
5〜7.9(5H)、8.2(2H) 化合物No.12 IRνmaxcm-1;3020、1650、1540、1480、1380、1195、83
5、745、490 NMR δppm;5.7(2H)、6.9(2H)、7.3(3H)、7.5〜8.
0(5H)、8.2(2H) 化合物No.13 IRνmaxcm-1;3450、3150、1660、1540、1490、1455、12
10、1000、840、740 NMR δppm;5.7(2H)、6.9(2H)、7.2〜7.9(5H)、8.
0〜8.4(4H) 化合物No.14 IRνmaxcm-1;3430、3080、1650、1530、1450、1400、11
85、845、745 NMR δppm;1.9(3H)、5.6(2H)、6.7〜7.1(3H)、7.
2〜7.5(2H)、7.5〜7.9(5H)、8.2(2H) 化合物No.15 IRνmaxcm-1;3330、3160、2930、1650、1530、1490、14
50、1310、1200、840、740、720 NMR δppm;2.5(3H)、5.8(2H)、7.0(2H)、7.2〜7.
4(3H)、7.4〜8.0(5H)、8.2(2H) 化合物No.16 IRνmaxcm-1;3430、3150、3020、1655、1610、1540、14
55、1320、1190、1120、1065、745 NMR δppm;5.8(2H)、7.0(2H)、7.4(3H)、7.6〜8.
0(2H)、8.1(3H)、8.4(2H) 化合物No.17 IRνmaxcm-1;3130、1650、1540、1490、1460、1305、12
00、1180、840、740 NMR δppm;0.9(3H)、2.1(2H)、5.5(2H)、6.8〜7.
1(3H)、7.2〜7.9(7H)、8.1(2H) 化合物No.18 IRνmaxcm-1;3350、3160、1665、1550、1520、1460、12
10、840、750 NMR δppm;1.3(3H)、2.8(2H)、5.7(2H)、6.9(2
H)、7.2〜7.5(3H)、7.6〜7.9(5H)、8.2(2H) 化合物No.19 IRνmaxcm-1;3200、1655、1540、1290、1260、1205、10
05、760 NMR δppm;3.7(3H)、5.6(2H)、6.9(2H)、7.0〜7.
9(8H)、8.0(2H) 化合物No.20 IRνmaxcm-1;3390、3100、1660、1540、1510、1460、13
00、1240、1215、1015、830、745 NMR δppm;3.9(3H)、5.7(2H)、7.0(2H)、7.1〜7.
5(5H)、7.5〜7.9(3H)、8.2(2H) 化合物No.21 IRνmaxcm-1;3350、3170、1660、1540、1480、1300、12
10、1030、835、745 NMR δppm;5.8(2H)、7.0(2H)、7.3(3H)、7.6〜8.
0(3H)、8.1〜8.4(3H) 化合物No.22 IRνmaxcm-1;3300、3130、1650、1540、1500、1460、12
00、840、740 NMR δppm;2.3(6H)、5.7(2H)、6.9(3H)、7.3(2
H)、7.4(2H)、7.5〜8.0(2H)、8.2(2H) 化合物No.23 IRνmaxcm-1;3430、3140、1660、1550、1510、1460、13
20、1210、740 NMR δppm;2.4(3H)、5.8(2H)、7.0(2H)、7.2〜7.
9(7H)、8.3(2H) 化合物No.24 IRνmaxcm-1;3140、1655、1535、1505、1400、1180、84
0、750 NMR δppm;1.8(6H)、2.4(3H)、5.5(2H)、6.8〜7.
1(3H)、7.1〜7.6(4H)、7.7〜8.0(1H)、8.2(2H) 化合物No.25 IRνmaxcm-1;3300、3100、1660、1540、1510、1460、12
00、840、760 NMR δppm;6.0(2H)、7.0(2H)、7.3〜7.9(4H)、8.
0(2H)、8.3(2H) 化合物No.26 IRνmaxcm-1;3350、3170、1660、1550、1480、1350、12
10、1190、825 NMR δppm;5.9(2H)、6.9〜7.6(9H)、7.8(1H)、8.
4(2H) 化合物No.27 IRνmaxcm-1;3380、3130、1660、1640、1540、1500、14
50、1210、1010、865、770、700、500 NMR δppm;1.2(3H)、2.8(2H)、5.7(2H)、6.9(2
H)、7.2(1H)、7.7(5H)、7.8(1H)、8.2(2H)
The IR and NMR values of each compound of the present invention are shown below: Compound No. 1 IRν max cm -1 ; 3340, 3120, 2960, 1655, 1550, 1460, 13
85, 1320, 1210, 835, 725 NMR δppm; 0.9 (6H), 1.9 to 2.3 (1H), 4.2 (2H), 5.
9 (2H), 7.0 (2H), 7.2 to 7.9 (4H), 8.4 (2H) Compound No. 2 IRν max cm -1 ; 3330, 3100, 2960, 1650, 1550, 1460, 13
85, 1210, 840, 730 NMR δppm; 1.0 (6H), 1.3 to 1.8 (3H), 4.1 to 4.6 (2
H), 6.0 (2H), 7.1 (2H), 7.2 ~ 7.8 (4H), 8.4 (2
H) Compound No. 3 IRν max cm -1 ; 3320, 3150, 1660, 1540, 1460, 1430, 12
20, 1190, 840, 760 NMR δppm; 1.9 (2H), 3.5 (2H), 4.4 (2H), 5.8 (2
H), 7.0 (2H), 7.2 to 7.4 (2H), 7.5 to 7.8 (2H), 8.
3 (2H) Compound No. 4 IRν max cm -1 ; 3300, 3150, 1645, 1540, 1460, 1310, 12
15, 1200, 1060, 840, 735 NMR δppm; 1.1 to 2.1 (4H), 3.3 to 3.7 (2H), 4.1 to 4.6
(2H), 5.9 (2H), 7.0 (2H), 7.2 ~ 8.0 (4H), 8.3
(2H) Compound No. 5 IRν max cm -1 ; 3360, 3180, 1660, 1540, 1500, 1410, 12
90, 1210, 500 NMR δppm; 0.8 (9H), 4.9 (2H), 5.7 (2H), 6.9 (2
H), 7.4 to 8.1 (4H), 8.3 (2H) Compound No. 6 IRν max cm -1 ; 3280, 3100, 1645, 1540, 1460, 1380, 12
00, 1110, 840, 740 NMR δppm; 1.0 (3H), 3.2 to 3.5 (2H), 3.5 to 3.9 (2
H), 4.4 to 4.8 (2H), 5.9 (2H), 7.1 (2H), 7.2 to 7.
9 (4H), 8.4 (2H) Compound No. 7 IRν max cm -1 ; 3300, 3000, 1740, 1620, 1460, 1200, 10
30,740 NMR δppm; 2.2 (3H), 2.9 (2H), 3.2 to 3.8 (2H), 4.
3 (2H), 5.7 (2H), 7.0 (2H), 7.1 ~ 7.8 (4H), 8.0
~ 8.5 (2H) Compound No. 8 IR ν max cm -1 ; 3110, 1660, 1540, 1460, 1340, 1205, 82
5,745 NMR δppm; 1.8-2.4 (2H), 2.7-2.9 (2H), 4.4 (2
H), 5.9 (2H), 7.0 (2H), 7.3 to 7.8 (9H), 8.2 (2
H) Compound No. 9 IRν max cm -1 ; 3470, 3320, 3170, 1655, 1530, 1500, 13
10, 1200, 1015, 845, 770, 730 NMR δppm; 5.7 (2H), 7.0 (2H), 7.2 to 7.6 (3H), 7.
6 to 8.0 (5H), 8.3 (2H) Compound No. 10 IRν max cm -1 ; 3330, 3170, 1660, 1610, 1530, 1490, 13
10, 1205, 850, 735 NMR δppm; 5.8 (2H), 7.0 (2H), 7.3 to 7.5 (3H), 7.
5 to 8.0 (5H), 8.3 (2H) Compound No. 11 IRν max cm -1 ; 3010, 1650, 1540, 1485, 1380, 1195, 10
80, 830, 745, 490 NMR δppm; 5.8 (2H), 7.0 (2H), 7.2 to 7.4 (3H), 7.
5 to 7.9 (5H), 8.2 (2H) Compound No. 12 IRν max cm -1 ; 3020, 1650, 1540, 1480, 1380, 1195, 83
5,745,490 NMR δppm; 5.7 (2H), 6.9 (2H), 7.3 (3H), 7.5-8.
0 (5H), 8.2 (2H) Compound No. 13 IRν max cm -1 ; 3450, 3150, 1660, 1540, 1490, 1455, 12
10, 1000, 840, 740 NMR δppm; 5.7 (2H), 6.9 (2H), 7.2-7.9 (5H), 8.
0 ~ 8.4 (4H) Compound No. 14 IR ν max cm -1 ; 3430, 3080, 1650, 1530, 1450, 1400, 11
85, 845, 745 NMR δppm; 1.9 (3H), 5.6 (2H), 6.7 to 7.1 (3H), 7.
2-7.5 (2H), 7.5-7.9 (5H), 8.2 (2H) Compound No. 15 IRν max cm -1 ; 3330, 3160, 2930, 1650, 1530, 1490, 14
50, 1310, 1200, 840, 740, 720 NMR δppm; 2.5 (3H), 5.8 (2H), 7.0 (2H), 7.2 to 7.
4 (3H), 7.4 to 8.0 (5H), 8.2 (2H) Compound No. 16 IRν max cm -1 ; 3430, 3150, 3020, 1655, 1610, 1540, 14
55, 1320, 1190, 1120, 1065, 745 NMR δppm; 5.8 (2H), 7.0 (2H), 7.4 (3H), 7.6-8.
0 (2H), 8.1 (3H), 8.4 (2H) Compound No. 17 IRν max cm -1 ; 3130, 1650, 1540, 1490, 1460, 1305, 12
00, 1180, 840, 740 NMR δppm; 0.9 (3H), 2.1 (2H), 5.5 (2H), 6.8 to 7.
1 (3H), 7.2 to 7.9 (7H), 8.1 (2H) Compound No. 18 IRν max cm -1 ; 3350, 3160, 1665, 1550, 1520, 1460, 12
10, 840, 750 NMR δppm; 1.3 (3H), 2.8 (2H), 5.7 (2H), 6.9 (2
H), 7.2 to 7.5 (3H), 7.6 to 7.9 (5H), 8.2 (2H) Compound No. 19 IRν max cm -1 ; 3200, 1655, 1540, 1290, 1260, 1205, 10
05,760 NMR δppm; 3.7 (3H), 5.6 (2H), 6.9 (2H), 7.0 to 7.
9 (8H), 8.0 (2H) Compound No. 20 IR ν max cm -1 ; 3390, 3100, 1660, 1540, 1510, 1460, 13
00, 1240, 1215, 1015, 830, 745 NMR δppm; 3.9 (3H), 5.7 (2H), 7.0 (2H), 7.1 to 7.
5 (5H), 7.5 to 7.9 (3H), 8.2 (2H) Compound No. 21 IRν max cm -1 ; 3350, 3170, 1660, 1540, 1480, 1300, 12
10, 1030, 835, 745 NMR δppm; 5.8 (2H), 7.0 (2H), 7.3 (3H), 7.6-8.
0 (3H), 8.1 to 8.4 (3H) Compound No. 22 IRν max cm -1 ; 3300, 3130, 1650, 1540, 1500, 1460, 12
00, 840, 740 NMR δppm; 2.3 (6H), 5.7 (2H), 6.9 (3H), 7.3 (2
H), 7.4 (2H), 7.5 to 8.0 (2H), 8.2 (2H) Compound No. 23 IRν max cm -1 ; 3430, 3140, 1660, 1550, 1510, 1460, 13
20, 1210, 740 NMR δppm; 2.4 (3H), 5.8 (2H), 7.0 (2H), 7.2 to 7.
9 (7H), 8.3 (2H) Compound No. 24 IR ν max cm -1 ; 3140, 1655, 1535, 1505, 1400, 1180, 84
0,750 NMR δppm; 1.8 (6H), 2.4 (3H), 5.5 (2H), 6.8 to 7.
1 (3H), 7.1 to 7.6 (4H), 7.7 to 8.0 (1H), 8.2 (2H) Compound No. 25 IRν max cm -1 ; 3300, 3100, 1660, 1540, 1510, 1460, 12
00, 840, 760 NMR δppm; 6.0 (2H), 7.0 (2H), 7.3 to 7.9 (4H), 8.
0 (2H), 8.3 (2H) Compound No. 26 IRν max cm -1 ; 3350, 3170, 1660, 1550, 1480, 1350, 12
10, 1190, 825 NMR δppm; 5.9 (2H), 6.9 to 7.6 (9H), 7.8 (1H), 8.
4 (2H) Compound No.27 IRν max cm -1 ; 3380, 3130, 1660, 1640, 1540, 1500, 14
50, 1210, 1010, 865, 770, 700, 500 NMR δppm; 1.2 (3H), 2.8 (2H), 5.7 (2H), 6.9 (2
H), 7.2 (1H), 7.7 (5H), 7.8 (1H), 8.2 (2H)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】下記一般式: (式中、Xはイソブチル、イソアミル、3−ヒドロキシ
プロピル、4−ヒドロキシブチル、3,3−ジメチル−2
−オキソブチル、2−エトキシエチル、2−アセトキシ
エトキシメチル、3−フェニルプロピル、o−フルオロ
フェニル、m−フルオロフェニル、p−クロロフェニ
ル、p−ブロモフェニル、p−ヨードフェニル、o−ト
リル、m−トリル、p−トリフルオロメチルフェニル、
o−エチルフェニル、p−エチルフェニル、o−メトキ
シフェニル、p−メトキシフェニル、3,4−ジクロロフ
ェニル、3,4−ジメチルフェニル、3−フルオロ−4−
メチルフェニル、2,4,6−トリメチルフェニル、または
2−チアゾリルを意味し、そしてRは水素原子を意味
し、またはXは水素原子をそしてRはフェノキシを意味
する。)で表わされる2−(4−ピリジルアミノメチ
ル)−ベンズイミダゾール誘導体またはその酸付加塩。
1. The following general formula: (In the formula, X is isobutyl, isoamyl, 3-hydroxypropyl, 4-hydroxybutyl, 3,3-dimethyl-2.
-Oxobutyl, 2-ethoxyethyl, 2-acetoxyethoxymethyl, 3-phenylpropyl, o-fluorophenyl, m-fluorophenyl, p-chlorophenyl, p-bromophenyl, p-iodophenyl, o-tolyl, m-tolyl. , P-trifluoromethylphenyl,
o-ethylphenyl, p-ethylphenyl, o-methoxyphenyl, p-methoxyphenyl, 3,4-dichlorophenyl, 3,4-dimethylphenyl, 3-fluoro-4-
It means methylphenyl, 2,4,6-trimethylphenyl, or 2-thiazolyl, and R means a hydrogen atom, or X means a hydrogen atom and R means phenoxy. ) A 2- (4-pyridylaminomethyl) -benzimidazole derivative represented by the formula) or an acid addition salt thereof.
JP62013258A 1986-07-11 1987-01-21 2- (4-Pyridylaminomethyl) -benzimidazole derivative having antiviral activity Expired - Fee Related JP2562021B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP62013258A JP2562021B2 (en) 1987-01-21 1987-01-21 2- (4-Pyridylaminomethyl) -benzimidazole derivative having antiviral activity
CA000541384A CA1279648C (en) 1986-07-11 1987-07-06 2-(4-pyridylaminometyl)-benzimidazole derivatives having antiviral activity
US07/071,251 US4818761A (en) 1986-07-11 1987-07-08 2-(4-pyridylaminomethyl)-benzimidazole derivatives having antiviral activity
EP87109931A EP0252507B1 (en) 1986-07-11 1987-07-09 2-(4-pyridylaminomethyl)-benzimidazole derivatives having antiviral activity
DE8787109931T DE3765475D1 (en) 1986-07-11 1987-07-09 2- (4-PYRIDYLAMINOMETHYL) -BENZIMIDAZOLE DERIVATIVES WITH ANTIVIRAL EFFECT.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62013258A JP2562021B2 (en) 1987-01-21 1987-01-21 2- (4-Pyridylaminomethyl) -benzimidazole derivative having antiviral activity

Publications (2)

Publication Number Publication Date
JPS63179870A JPS63179870A (en) 1988-07-23
JP2562021B2 true JP2562021B2 (en) 1996-12-11

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3667047B2 (en) 1997-09-12 2005-07-06 キヤノン株式会社 Artificial nucleic acid and method for producing the same, deoxyribofuranose compound, ribofuranose compound and method for producing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6322091A (en) * 1986-07-11 1988-01-29 Maruishi Seiyaku Kk 2-(4-pyridylaminomethyl)-benzimidazole based derivative having antiviral activity
JPH0376318A (en) * 1989-08-18 1991-04-02 Hitachi Ltd Digital/analog converter or delta sigma modulation circuit in analog/digital converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6322091A (en) * 1986-07-11 1988-01-29 Maruishi Seiyaku Kk 2-(4-pyridylaminomethyl)-benzimidazole based derivative having antiviral activity
JPH0376318A (en) * 1989-08-18 1991-04-02 Hitachi Ltd Digital/analog converter or delta sigma modulation circuit in analog/digital converter

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