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WO1996008247A1 - Anti-helicobacter agent - Google Patents

Anti-helicobacter agent Download PDF

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Publication number
WO1996008247A1
WO1996008247A1 PCT/JP1995/001811 JP9501811W WO9608247A1 WO 1996008247 A1 WO1996008247 A1 WO 1996008247A1 JP 9501811 W JP9501811 W JP 9501811W WO 9608247 A1 WO9608247 A1 WO 9608247A1
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Prior art keywords
group
hydrogen atom
alkyl group
salt
active ingredient
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PCT/JP1995/001811
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French (fr)
Japanese (ja)
Inventor
Kenji Yonezawa
Hisanari Shibata
Yukio Mori
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Toyama Chemical Co., Ltd.
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Priority to AU34842/95A priority Critical patent/AU3484295A/en
Publication of WO1996008247A1 publication Critical patent/WO1996008247A1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/335Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
    • A61K31/34Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide
    • A61K31/345Nitrofurans
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00Drugs for disorders of the alimentary tract or the digestive system
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/04Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/04Antibacterial agents

Definitions

  • the present invention relates to the general formula [1]
  • R 1 represents a hydrogen atom, alkoxycarbonyl, nitrofurfurylidenealkyl or hydroxyiminoalkyl group
  • R 2 represents a hydrogen atom or an alkoxycarbonylalkyl group
  • R 3 represents amidino, alkamoyl or A thiocarbamoyl group
  • R 4 represents a hydrogen atom, a halogen atom or an alkyl group.
  • a salt thereof as an active ingredient
  • Helicobacter pylori is a specific bacterium that has been implicated in gastritis, stomach 'duodenal ulcer, and gastric cancer [Japanese clinical practice, Vol. Year)] o
  • nitrofuran derivative represented by the general formula [1] used in the present invention is a known compound. ) Eighth Edition (1981), Pharmaceutical Tojihosha].
  • H. pylori has been used as an antibacterial agent to eradicate H. pylori such as ampicillin, amoxicillin, bacampicillin, and nitrofurantoin. These antibacterial agents also show strong antibacterial activity against intestinal bacteria, and thus have side effects such as diarrhea.
  • An anti-Helicobacter agent is an agent that specifically exhibits antibacterial activity against a bacterium of the genus Helicobacter [Japanese clinical practice, Vol. 51, No. 5, pp. 16-16 (1993)].
  • the alkyl group e.g., methyl, Echiru, n- propyl, iso- propyl, n - butyl, iso- butyl, Ten- butyl, pentyl, hexyl, and ci _ s alkyl group such as butyl and Okuchi Le to;
  • the alkoxycarbonyl group is a -C00-alkyl group (the alkyl group is the above-mentioned alkyl group); the nitrofurfurylidenealkyl group is nitrofurfurylidenemethyl, nitrofurfurylideneethyl, or nitrofurfurylidene.
  • Fg ⁇ means a group having 5 or less carbon atoms.
  • alkyl group lower alkyl groups are preferred, and methyl, ethyl and propyl groups are particularly preferred.
  • Alkoxycarbonyl groups include lower alkoxycarbonyl Le group are preferred, particularly preferred ethoxycarbonyl Nirumotoka f.
  • hydroxyiminoalkyl group a hydroxyimino lower alkyl group is preferable, and a hydroxyiminomethyl group is particularly preferable.
  • alkoxycarbonylalkyl group a lower alkoxycarbonyl lower alkyl group is preferable, and an ethoxycarbonylmethyl group is particularly preferable.
  • R is preferably a hydrogen atom, a lower alkoxycarbonyl, a nitrofurfurylidene lower alkyl or a hydroxyimino lower alkyl group, more preferably a hydrogen atom, ethoxycarbonyl, nitrofurfurylidenemethyl or hydroxyiminomethyl group.
  • R 2 is preferably a hydrogen atom or a lower alkoxycarbonyl lower alkyl group, particularly preferably a hydrogen atom.
  • R 3 an amidino group is preferable.
  • R 4 is preferably a hydrogen atom, a halogen atom or a lower alkyl group, more preferably a hydrogen atom, a chlorine atom, a bromine atom, an iodine atom or a methyl group, and particularly preferably a hydrogen atom.
  • Examples of the salt of the nitrofuran derivative represented by the general formula [1] include pharmaceutically acceptable salts, for example, salts with mineral acids such as hydrochloric acid, hydrobromic acid and sulfuric acid; fumaric acid, maleic acid, malic acid and citric acid And sulfonic acids such as methanesulfonic acid, P-toluenesulfonic acid and naphthalenedisulfonic acid.
  • mineral acids such as hydrochloric acid, hydrobromic acid and sulfuric acid
  • sulfonic acids such as methanesulfonic acid, P-toluenesulfonic acid and naphthalenedisulfonic acid.
  • the nitrofuran derivative represented by the general formula [1] or a salt thereof includes isomers (geometric isomers and optical isomers), hydrates, solvates and crystal forms.
  • nitrofuran derivative represented by the general formula [1] or a salt thereof is described in, for example, Japanese Patent Publication No. 27-2673, No. 9382, No. 39-5030, No. 39-5031 and No. 39-6530. It can be manufactured by the method described.
  • the drug of the present invention is orally administered as capsules, powders, granules, pills, tablets, suspensions, emulsions, liquids or syrups in a usual manner.
  • the administration method, dosage, and number of administrations may be appropriately adjusted according to the age and symptoms of the patient, but usually 100 mg / kg per day for adults is divided into one to several doses. I just need.
  • the active ingredient In order to make a nitrofuran derivative of the general formula [1] or a salt thereof into a pharmaceutical preparation as an active ingredient, the active ingredient must contain excipients such as lactose, anhydrous lactose, mannitol, corn starch and microcrystalline cellulose, if necessary. Binders such as hydroxypropylcellulose, polyvinylpyrrolidone and methylcellulose; disintegrants such as carboxymethylcellulose, carboxymethylcellulose calcium, low-substituted hydroxypropylcellulose and partially a-starch; magnesium stearate, calcium stearate, stealine.
  • excipients such as lactose, anhydrous lactose, mannitol, corn starch and microcrystalline cellulose, if necessary.
  • Binders such as hydroxypropylcellulose, polyvinylpyrrolidone and methylcellulose
  • disintegrants such as carboxymethylcellulose, carboxymethylcellulose calcium, low-substituted hydroxypropyl
  • Lubricants such as acid and talc; Coating agents such as hydroxypropylmethylcellulose, methacrylic acid-acrylic acid copolymer and hydroxypropylmethylcellulose phthalate; P-oxo Using a preservative such as methyl benzoate; a pigment such as Yellow No. 5; and a glossing agent such as Carnauba wax, etc., in a manner usually performed by those skilled in the art, for example, capsules, powders, granules, pills, Tablets, suspensions, emulsions, solutions, syrups and the like may be used.
  • a preservative such as methyl benzoate
  • a pigment such as Yellow No. 5
  • a glossing agent such as Carnauba wax, etc.
  • Test compound 1,5-bis (5-nitro-2-furyl) -11,4-pentagen-3-one-amidinohydrazone hydrochloride [hereinafter referred to as diflazone. ] Test example
  • the minimum inhibitory concentration (MIC) for Helicobacter pylori was determined by the agar plate method. Measured. Helicobacter pylori was treated with 7% horse defibrinated blood and Brain Heart Infusion Agar (manufactured by Tanabe Seiyaku Co., Ltd.) in a 5% oxygen / 10% carbon dioxide atmosphere at 37 for 1 week ( HT—1 share) or 4 days
  • MI C ⁇ gAnl
  • the MIC for Escherichia coli was measured based on the standard method of the Japanese Society of Chemotherapy [CHEMOTH ERAPY], Vol. 29, No. 1, pp. 76-79 (1981). Sunawa Chi, with 37 Myurahin tons' broth (Mueller Hinton broth) [Difco (Difco) Co.], and cultured for 20 hours, saline bacteria amount was adjusted to 10 6 cells / ml in bacterial solution 1 loopful Was inoculated into Mueller Hinton Agar medium (Difco) containing the drug, cultured at 37 for 20 hours, and the presence or absence of bacterial growth was observed. The minimum concentration at which growth was inhibited was defined as MIC (/ gAnl).
  • Tablets are prepared according to a conventional method using the above formula, and the resulting uncoated tablets are subjected to film coating according to the following formula according to a conventional method to obtain tablets.
  • Granulation is carried out by the usual method according to the above formulation, and the obtained granules are filled into No. 2 capsule to obtain a force bushing agent.
  • Powders are obtained according to the above formula by a conventional method. Industrial applicability
  • the compound of the present invention has a strong antibacterial activity against bacteria of the genus Helicobacter, but hardly acts on intestinal bacteria, and has almost no oral absorption, so that it is useful as an anti-helicopter agent. .

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  • Health & Medical Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
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  • Medicinal Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

An anti-helicobacter agent containing a nitrofuran derivative represented by general formula (I) or a salt thereof as the active ingredient and useful as a drug with a high selectivity because of scarcely affecting enteric bacteria; wherein R1 represents hydrogen, alkoxycarbonyl, nitrofurfurylidenealkyl or hydroxyiminoalkyl; R2 represents hydrogen or alkoxycarbonylalkyl; R3 represents amidino, carbamoyl or thiocarbamoyl; and R4 represents hydrogen, halogeno or alkyl.

Description

明細書 抗ヘリコパクター剤  Description Anti-helicopter agent
技術分野 Technical field
本発明は、 一般式 [ 1 ]  The present invention relates to the general formula [1]
Figure imgf000003_0001
Figure imgf000003_0001
[式中、 R ,は、 水素原子、 アルコキシカルボニル、 ニトロフルフリリデンァ ルキルまたはヒドロキシィ ミノアルキル基を; R 2は、 水素原子またはアルコキ シカルボニルアルキル基を ; R 3は、 ア ミジノ、 力ルバモイルまたはチォカルバ モイル基を ; R 4は、 水素原子、 ハロゲン原子またはアルキル基を示す。 ] で表 される二トロフラン誘導体またはその塩を有効成分とする抗ヘリコパクター剤に 関するものである。 [Wherein, R 1 represents a hydrogen atom, alkoxycarbonyl, nitrofurfurylidenealkyl or hydroxyiminoalkyl group; R 2 represents a hydrogen atom or an alkoxycarbonylalkyl group; R 3 represents amidino, alkamoyl or A thiocarbamoyl group; R 4 represents a hydrogen atom, a halogen atom or an alkyl group. And a salt thereof as an active ingredient.
背景技術 Background art
ヘリコバクタ— . ピロリ (Hdicobactor pylori) は胃炎、 胃 '十二指腸潰瘍、 胃 癌との関連が注 されている特異的な細菌である [日本臨床、 第 51卷、 第 12号、 第卜 218頁 ( 1993年) ] o  Helicobacter pylori is a specific bacterium that has been implicated in gastritis, stomach 'duodenal ulcer, and gastric cancer [Japanese clinical practice, Vol. Year)] o
一方、 本発明で使用される一般式 [ 1 ] のニトロフラン誘導体は、 既知化合物 であり、 特にジフラゾンは、 赤痢、 疫痢などの細菌性腸疾患の治療に用いられた [医薬品要 ¾ (総合新版) 第 8版 (1981年) 、 薬業時報社] 。  On the other hand, the nitrofuran derivative represented by the general formula [1] used in the present invention is a known compound. ) Eighth Edition (1981), Pharmaceutical Tojihosha].
従来、 ヘリコバクタ一 ' ピロリを除菌するために抗菌薬としてアンピシリン、 ァモキシシリン、 バカンピシリン、 ニトロフラントインなど 、 '用いられている力;'、 これらの抗菌薬は、 腸内細菌に対しても強い抗菌活性を示すため、 下痢などの副 作用が発現する。 Conventionally, Helicobacter pylori has been used as an antibacterial agent to eradicate H. pylori such as ampicillin, amoxicillin, bacampicillin, and nitrofurantoin. These antibacterial agents also show strong antibacterial activity against intestinal bacteria, and thus have side effects such as diarrhea.
それ故、 へリコパクター ' ピロリに特異的に抗菌活性を示す力 他の腸内細菌 には、 抗菌活性を示さない薬剤の開発が望まれている。 発明の開示  Therefore, the ability of Helicobacter pylori to specifically exhibit antibacterial activity It is desired that other intestinal bacteria develop drugs that do not exhibit antibacterial activity. Disclosure of the invention
このよ うな状況下において、 本発明者らは、 鋭意研究を行った結果、 一般式 [ 1 ] のニトロフラン誘導体またはその塩力 ?、 特にへリコパクター属の細菌に対 して選択性の高い薬剤であることを見出し、 本発明を完成するに至った。 Under such circumstances, the present inventors have intensively studied the results of, nitrofuran derivative or a salt thereof forces the general formula [1]?, Rikopakuta bacteria pairs was highly selective with drug to the particular Thus, the present invention has been completed.
以下、 本発明の医薬に関する化合物について詳述する。 Hereinafter, the compounds related to the medicament of the present invention will be described in detail.
本明細書において、 各用語は、 特にことわらない限り、 以下の意味を有する。 抗ヘリコバクタ一剤とは、 へリコパクター属の細菌 [日本臨床、 第 51卷、 第 号、 第 Π- 16頁 (1993年) ] に対し特異的に抗菌活性を示す薬剤を意味する。 アルキル基とは、 たとえば、 メチル、 ェチル、 n-プロピル、 iso-プロピル、 n -ブチル、 iso-ブチル、 ten-ブチル、 ペンチル、 へキシル、 へブチルおよびォクチ ルなどの c i _ sアルキル基を ; アルコキシカルボニル基とは、 -C 0 0 -アルキル 基 (アルキル基は、 上記したアルキル基を示す。 )を ;ニトロフルフリ リデンアル キル基とは、 ニトロフルフリリデンメチル、 ニトロフルフリ リデンェチル、 ニ ト 口フルフリ リデン -n-プロピル、 ニトロフルフリ リデン -iso-プロピル、 ニトロフル フリ リデン -n-ブチル、 ニトロフルフリリデン -iso-ブチル、 ニトロフルフリリデン -ten-ブチル、 ニトロフルフリ リデンペンチル、 ニ トロフルフリ リデンへキシル、 二トロフルフリ リデンヘプチルおよび二トロフルフリリデンォクチルなどの二 ト 口フルフリリデン C アルキル基を ; ヒ ドロキシィ ミノアルキル基とは、 H 0 -N =アルキル基 (アルキル基は、 上記したアルキル基を示す。 )を ; アルコキシ力 ルポニルアルキル基とは、 アルキル- 0- C 0 -アルキル基 (アルキル基は、 上記し たアルキル基を示す。 )を ;ハロゲン原子とは、 フッ素原子、 塩素原子、 臭素原 子およびヨウ素原子などを示す。 また、 「fg^及」 とは、 炭素数 5以下の基を示す。 アルキル基としては、 低級アルキル基力好ましく、 特にメチル、 ェチル、 プロ ピル基が好ましい。 アルコキシカルボニル基と しては、 低級アルコキシカルボ二 ル基が好ましく、 特に、 エトキシカルボ二ル基カ f好ましい。 ヒドロキシイミノア ルキル基としては、 ヒ ドロキシィミノ低級アルキル基が好ましく、 特にヒ ドロキ シィミノメチル基が好ましい。 アルコキシカルボニルアルキル基としては、 低級 アルコキシカルボニル低級アルキル基が好ましく、 特に、 エトキシカルボニルメ チル基が好ましい。 In this specification, each term has the following meaning unless otherwise specified. An anti-Helicobacter agent is an agent that specifically exhibits antibacterial activity against a bacterium of the genus Helicobacter [Japanese clinical practice, Vol. 51, No. 5, pp. 16-16 (1993)]. The alkyl group, e.g., methyl, Echiru, n- propyl, iso- propyl, n - butyl, iso- butyl, Ten- butyl, pentyl, hexyl, and ci _ s alkyl group such as butyl and Okuchi Le to; The alkoxycarbonyl group is a -C00-alkyl group (the alkyl group is the above-mentioned alkyl group); the nitrofurfurylidenealkyl group is nitrofurfurylidenemethyl, nitrofurfurylideneethyl, or nitrofurfurylidene. -n-propyl, nitrofurfurylidene -iso-propyl, nitrofurfurylidene -n-butyl, nitrofurfurylidene -iso-butyl, nitrofurfurylidene -ten-butyl, nitrofurfurylidenepentyl, nitrofurfurylidenehexyl, ditrofurfury Such as lideneheptyl and ditrofurfurylidenoctyl A hydroxyfurfurylidene C alkyl group; a hydroxyminoalkyl group is a H 0 -N = alkyl group (the alkyl group is an alkyl group as described above); an alkoxy group, a rubonylalkyl group is an alkyl-0- A C 0 -alkyl group (the alkyl group represents the above-mentioned alkyl group); a halogen atom means a fluorine atom, a chlorine atom, a bromine atom, an iodine atom and the like. "Fg ^" means a group having 5 or less carbon atoms. As the alkyl group, lower alkyl groups are preferred, and methyl, ethyl and propyl groups are particularly preferred. Alkoxycarbonyl groups include lower alkoxycarbonyl Le group are preferred, particularly preferred ethoxycarbonyl Nirumotoka f. As the hydroxyiminoalkyl group, a hydroxyimino lower alkyl group is preferable, and a hydroxyiminomethyl group is particularly preferable. As the alkoxycarbonylalkyl group, a lower alkoxycarbonyl lower alkyl group is preferable, and an ethoxycarbonylmethyl group is particularly preferable.
R】としては、 水素原子、 低級アルコキシカルボニル、 ニトロフルフリ リデン 低級アルキルまたはヒドロキシィミノ低級アルキル基が好ましく、 更には、 水素 原子、 エトキシカルボニル、 ニトロフルフリ リデンメチルまたはヒ ドロキシイ ミ ノメチル基が好ましく、 特に、 ニトロフルフリリデンメチル基力 f好ましい。 R 2 としては、 水素原子または低級アルコキシカルボニル低級アルキル基が好ましく、 特に、 水素原子が好ま しい。 R 3と しては、 アミジノ基が好ましい。 R 4として は、 水素原子、 ハロゲン原子または低級アルキル基が好ましく、 更には、 水素原 子、 塩素原子、 臭素原子、 ヨウ素原子またはメチル基が好ましく、 特に、 水素原 子が好ましい。 R is preferably a hydrogen atom, a lower alkoxycarbonyl, a nitrofurfurylidene lower alkyl or a hydroxyimino lower alkyl group, more preferably a hydrogen atom, ethoxycarbonyl, nitrofurfurylidenemethyl or hydroxyiminomethyl group. preferred nitro furfurylidene methyl force f. R 2 is preferably a hydrogen atom or a lower alkoxycarbonyl lower alkyl group, particularly preferably a hydrogen atom. As R 3 , an amidino group is preferable. R 4 is preferably a hydrogen atom, a halogen atom or a lower alkyl group, more preferably a hydrogen atom, a chlorine atom, a bromine atom, an iodine atom or a methyl group, and particularly preferably a hydrogen atom.
一般式 [ 1 ] のニトロフラン誘導体の塩としては、 医薬として許容される塩、 たとえば、 塩酸、 臭化水素酸および硫酸などの鉱酸との塩; フマル酸、 マレイン 酸、 リンゴ酸およびクェン酸などの有機カルボン酸との塩;並びにメタンスルホ ン酸、 P-トルエンスルホン酸およびナフタレンジスルホン酸などのスルホン酸と の塩などが挙げられる。  Examples of the salt of the nitrofuran derivative represented by the general formula [1] include pharmaceutically acceptable salts, for example, salts with mineral acids such as hydrochloric acid, hydrobromic acid and sulfuric acid; fumaric acid, maleic acid, malic acid and citric acid And sulfonic acids such as methanesulfonic acid, P-toluenesulfonic acid and naphthalenedisulfonic acid.
一般式 [ 1 ] のニトロフラン誘導体またはその塩は、 異性体 (幾何異性体およ び光学異性体) 、 水和物、 溶媒和物および結晶形を包含するものである。  The nitrofuran derivative represented by the general formula [1] or a salt thereof includes isomers (geometric isomers and optical isomers), hydrates, solvates and crystal forms.
一般式 [ 1 ] のニトロフラン誘導体またはその塩は、 たとえば、 特公昭 27-267 3号、 同 3卜 9382号、 同 39- 5030号、 同 39-5031号および同 39-6530号公報に記載され た方法によって製造することができる。  The nitrofuran derivative represented by the general formula [1] or a salt thereof is described in, for example, Japanese Patent Publication No. 27-2673, No. 9382, No. 39-5030, No. 39-5031 and No. 39-6530. It can be manufactured by the method described.
本発明の薬剤は、 常法によりカプセル剤、 散剤、 顆粒剤、 丸剤、 錠剤、 懸濁剤、 乳剤、 液剤またはシロップ剤として経口で投与する。 また、 投与方法、 投与量お よび投与回数は、 患者の年齢および症状に応じて適宜増減し得るが、 通常成人に 対して 1 日卜 100mg/kgを 1回から数回に分割して投与すればよい。  The drug of the present invention is orally administered as capsules, powders, granules, pills, tablets, suspensions, emulsions, liquids or syrups in a usual manner. The administration method, dosage, and number of administrations may be appropriately adjusted according to the age and symptoms of the patient, but usually 100 mg / kg per day for adults is divided into one to several doses. I just need.
本発明の抗ヘリコバクター剤の有効成分である二トロフラン誘導体の代表的化 ^を表 1に示す。 なお、 表 1における R】、 R2、 R3および R4は、 それぞれ、 次式Representative of the ditrofuran derivative which is an active ingredient of the anti-Helicobacter agent of the present invention ^ Is shown in Table 1. Note that R], R 2 , R 3 and R 4 in Table 1 are represented by the following formulas, respectively.
Figure imgf000006_0001
Figure imgf000006_0001
で表される化合物の置換基を示す。 なお、 表 1における化合物は、 全て塩酸塩で め 。 Represents a substituent of the compound represented by The compounds in Table 1 are all hydrochlorides.
表 1 化合物 No. R; R 2 R 3
Figure imgf000007_0001
Table 1 Compound No. R; R 2 R 3
Figure imgf000007_0001
NH  NH
2 H H H  2 H H H
NH2 O NH 2 O
3 H -CH2COOCfiCH3 H 3 H -CH 2 COOCfiCH 3 H
NH 2  NH 2
S  S
4 H -CH2COOOiCH, H 4 H -CH 2 COOOiCH, H
NH, NH,
NH NH
5 -COOCHzC ^ H H  5 -COOCHzC ^ H H
NH9 NH 9
NH NH
6 一 CH-NOH H H  6 One CH-NOH H H
NH2 NH 2
Figure imgf000007_0002
以下、 表 1の化合物の物性を示す c 1 :融点: 280で (分解)
Figure imgf000007_0002
Hereinafter, c indicating the physical properties of the compounds of Table 1 1: Melting point: 280 (decomposed)
2:融点: 252-260"C (分解)  2: Melting point: 252-260 "C (decomposed)
3:融点: 204で (分解)  3: Melting point: 204 (decomposed)
4:融点: 169 (分解)  4: Melting point: 169 (decomposition)
5:融点: >300で (分解) 5: Melting point:> 300 (decomposition)
6:融点: 225で (分解)  6: Melting point: 225 (decomposed)
7:融点: 273で (分解)  7: Melting point: 273 (decomposed)
8:融点: 221で (分解)  8: Melting point: 221 (decomposed)
9:融点: 229-230で (分解)  9: Melting point: 229-230 (decomposed)
10:融点: 270で (分解) 10: Melting point: 270 (decomposed)
一般式 [ 1 ] のニトロフラン誘導体またはその塩を有効成分として医薬品製剤 とするには、 有効成分に、 必要に応じて、 乳糖、 無水乳糖、 マンニトール、 コ一 ンスターチおよび結晶セルロースなどの賦形剤; ヒドロキシプロピルセルロース、 ポリビニルピロリ ドンおよびメチルセルロースなどの結合剤; カルボキシメチル セルロース、 カルボキシメチルセルロースカルシウム、 低置換度ヒ ドロキシプロ ピルセルロースおよび部分 a化デンプンなどの崩壊剤 ; ステアリン酸マグネシゥ ム、 ステアリン酸カルシウム、 ステアリ ン酸およびタルクなどの滑沢剤; ヒ ドロ キシプロピルメチルセルロース、 メタァクリル酸ーァクリル酸コポリマーおよび ヒ ドロキシプロピルメチルセルロースフ夕レ一 トなどのコ一ティ ング剤; P-ォキ シ安息香酸メチルのような保存剤;黄色 5号などの色素;並びにカルナゥバロウ などのツヤ出し剤などを用いて、 当業者が通常行う方法で、 たとえば、 カプセル 剤、 散剤、 顆粒剤、 丸剤、 錠剤、 懸濁剤、 乳剤、 液剤およびシロップ剤などにす ればよい。  In order to make a nitrofuran derivative of the general formula [1] or a salt thereof into a pharmaceutical preparation as an active ingredient, the active ingredient must contain excipients such as lactose, anhydrous lactose, mannitol, corn starch and microcrystalline cellulose, if necessary. Binders such as hydroxypropylcellulose, polyvinylpyrrolidone and methylcellulose; disintegrants such as carboxymethylcellulose, carboxymethylcellulose calcium, low-substituted hydroxypropylcellulose and partially a-starch; magnesium stearate, calcium stearate, stealine. Lubricants such as acid and talc; Coating agents such as hydroxypropylmethylcellulose, methacrylic acid-acrylic acid copolymer and hydroxypropylmethylcellulose phthalate; P-oxo Using a preservative such as methyl benzoate; a pigment such as Yellow No. 5; and a glossing agent such as Carnauba wax, etc., in a manner usually performed by those skilled in the art, for example, capsules, powders, granules, pills, Tablets, suspensions, emulsions, solutions, syrups and the like may be used.
次に、 本発明の抗へリコパクター剤の薬理作用について説明する。  Next, the pharmacological action of the anti-helicopter agent of the present invention will be described.
被験化合物: 1 , 5—ビス (5 —二トロ一 2 —フリル) 一 1 , 4—ペンタジェン — 3—オン一アミジノヒ ドラゾンの塩酸塩 [以下、 ジフラゾンと称する。 ] 試験例 Test compound: 1,5-bis (5-nitro-2-furyl) -11,4-pentagen-3-one-amidinohydrazone hydrochloride [hereinafter referred to as diflazone. ] Test example
( 1 )抗ヘリコバクタ一作用  (1) Anti-helicobacter action
ヘリコバクタ一 · ピロリに讨する最小発育阻止濃度 (M I C ) を寒天平板法に より測定した。 すなわち、 ヘリコバクタ一 ' ピロリを 7%馬脱繊維血加ブレイン ハートインフユジョン寒天培地 (Brain Heart Infusion Agar) [田辺製薬社製] で 5%酸素 · 10%炭酸ガス雰囲気下、 37で、 1週間 (HT— 1株) または 4日間The minimum inhibitory concentration (MIC) for Helicobacter pylori was determined by the agar plate method. Measured. Helicobacter pylori was treated with 7% horse defibrinated blood and Brain Heart Infusion Agar (manufactured by Tanabe Seiyaku Co., Ltd.) in a 5% oxygen / 10% carbon dioxide atmosphere at 37 for 1 week ( HT—1 share) or 4 days
(ATCC 4 3504株) 培養し、 菌量を】 06個 Λτιΐに調整した菌液 1白金耳を、 薬剤を含む上記寒天培地に接種し、 同条件で 1週間 (ΗΤ— 1株) または 4日間(ATCC 4 3504 strain) Cultivate the bacterial volume] 0 6 Inoculate 1 loopful of bacterial solution adjusted to Λτιΐ on the agar medium containing the drug, and under the same conditions for 1 week (ΗΤ1 strain) or 4 Days
(ATC C 4 3504株) 培養した後、 菌の発育の有無を観察し、 菌の発育が 阻止された最小濃度をもって MI C (^gAnl) とした。 After culturing, the presence or absence of bacterial growth was observed, and the minimum concentration at which bacterial growth was inhibited was taken as MI C (^ gAnl).
(2)腸内細菌に対する作用 (2) Effects on intestinal bacteria
大腸菌に対する MI Cを日本化学療法学会標準法 [ケモテラピー (CHEMOTH ERAPY) 、 第 29卷、 第 1号、 第 76~79頁(1981年)] に基づいて測定した。 すなわ ち、 ミュラーヒン トン ' ブロース (Mueller Hinton broth) [ディフコ (Difco) 社 製] で 37で、 20時間培養し、 生理食塩液で菌量を 106個/ mlに調整した菌液 1白金 耳を、 薬剤を含むミュラーヒン トン * ァガ一培地 (Mueller Hinton Agar) [ディ フコ (Difco) 社製] に接種し、 37でで 20時間培養した後、 菌の発育の有無を観 察し、 菌の発育が阻止された最小濃度をもって、 MI C (/ gAnl) とした。 The MIC for Escherichia coli was measured based on the standard method of the Japanese Society of Chemotherapy [CHEMOTH ERAPY], Vol. 29, No. 1, pp. 76-79 (1981). Sunawa Chi, with 37 Myurahin tons' broth (Mueller Hinton broth) [Difco (Difco) Co.], and cultured for 20 hours, saline bacteria amount was adjusted to 10 6 cells / ml in bacterial solution 1 loopful Was inoculated into Mueller Hinton Agar medium (Difco) containing the drug, cultured at 37 for 20 hours, and the presence or absence of bacterial growth was observed. The minimum concentration at which growth was inhibited was defined as MIC (/ gAnl).
その結果を表 2に示す。 The results are shown in Table 2.
表 2  Table 2
Figure imgf000009_0001
Figure imgf000009_0001
発明を実施するための最良の方法 BEST MODE FOR CARRYING OUT THE INVENTION
以下、 本発明の抗へリコパクター剤を具体的に製剤例を挙げて説明する力 本 発明は、 これらに限定されるものではない。  Hereinafter, the ability to specifically describe the anti-helicopter agent of the present invention with reference to formulation examples The present invention is not limited thereto.
製剤例 1 : ジフラゾン 200mg Formulation Example 1: Diflazone 200mg
乳糖 60mg コーンスターチ 25mg Lactose 60mg 25mg corn starch
ヒ ドロキシプロピルセルロース 12mg  Hydroxypropylcellulose 12mg
ステアリン酸マグネシウム― 3mg  Magnesium stearate-3mg
計 300mg  300mg in total
上記処方で常法により製錠し、 得られた素錠に下記処方のフィルムコーティ ン グを常法により行い錠剤を得る。  Tablets are prepared according to a conventional method using the above formula, and the resulting uncoated tablets are subjected to film coating according to the following formula according to a conventional method to obtain tablets.
ヒ ドロキシブ口ピルセルロース 5.4mg  Pill cellulose in mouth with hydroxy 5.4mg
ポリエチレングリコール 6000 l .lmg  Polyethylene glycol 6000 l .lmg
タルク 0.5mg  Talc 0.5mg
酸化チタン 0.5mg  Titanium oxide 0.5mg
黄色 5号 微量  Yellow No. 5 trace
力ルナウノ 口ゥ 微量  Power Lunauno mouth ゥ trace
計 約 7.5mg  Total about 7.5mg
製剤例 2 : ジフラゾン 200mg Formulation Example 2: Diflazone 200mg
乳糖 60mg  Lactose 60mg
コーンスターチ 25mg  25mg corn starch
ヒ ドロキシプロピルセルロース I2mg  Hydroxypropylcellulose I2mg
ステアリン酸マグネシウム 3mg  Magnesium stearate 3mg
計 300mg  300mg in total
上記処方で常法により造粒し、 得られた造粒物を 2号カブセルに充填し力ブセ ル剤を得る。  Granulation is carried out by the usual method according to the above formulation, and the obtained granules are filled into No. 2 capsule to obtain a force bushing agent.
製剤例 3 : ジフラゾン 200mg Formulation Example 3: Diflazone 200mg
乳糖 500mg  Lactose 500mg
コーンスターチ 220mg  Cornstarch 220mg
ヒ ドロキシプロピルセルロース 40mg  Hydroxypropyl cellulose 40mg
タルク 30mg  Talc 30mg
ステアリン酸マグネシゥム ΙΟπ^  Magnesium stearate ΙΟπ ^
計 lOOOmg  Total lOOOOmg
上記処方で常法により散剤を得る。 産業上の利用可能性 Powders are obtained according to the above formula by a conventional method. Industrial applicability
本発明化合物は、 ヘリコパクター属の細菌に対し強い抗菌活性を有するにも拘 らず、 腸内細菌に対しては殆ど作用せず、 また、 経口吸収も殆どないことから抗 ヘリコパクター剤として有用である。  The compound of the present invention has a strong antibacterial activity against bacteria of the genus Helicobacter, but hardly acts on intestinal bacteria, and has almost no oral absorption, so that it is useful as an anti-helicopter agent. .

Claims

請求の範囲 The scope of the claims
1 . 一般式  1. General formula
Figure imgf000012_0001
Figure imgf000012_0001
[式中、 R 1は、 水素原子、 アルコキシカルボニル、 ニトロフルフリ リデンァ ルキルまたはヒドロキシィ ミノアルキル基を ; R 2は、 水素原子またはアルコキ シカルボニルアルキル基を ; R 3は、 ア ミジノ、 力ルバモイルまたはチォカルバ モイル基を; R 4は、 水素原子、 ハロゲン原子またはアルキル基を示す。 ] で表 される二トロフラン誘導体またはその塩を有効成分とする抗ヘリコパクター剤。 [Wherein, R 1 represents a hydrogen atom, an alkoxycarbonyl, a nitrofurfurylidenealkyl or a hydroxyiminoalkyl group; R 2 represents a hydrogen atom or an alkoxycarbonylalkyl group; R 3 represents an amidino, alkamoyl or thiocarbamate; A moyl group; R 4 represents a hydrogen atom, a halogen atom or an alkyl group. ] An anti-helicopter agent comprising a ditrofuran derivative represented by the formula or a salt thereof as an active ingredient.
2 . 力 ;'、 水素原子、 低級アルコキシカルボニル、 ニトロフルフリ リデン低級 アルキルまたはヒドロキシィ ミノ低級アルキル基; R 2力 水素原子または低級 アルコキシカルボニル低級アルキル基; R 3力 ί、 アミ ジノ、 力ルバモイルまたは チォカルバモイル基; R 4力 水素原子、 ハロゲン原子または低級アルキル基で ある請求の範囲 1に記載の二トロフラン誘導体またはその塩を有効成分とする抗 ヘリコバクタ一剤。 2. Power; ', hydrogen atom, lower alkoxycarbonyl, nitrofurfurylidene lower alkyl or hydroxyamino lower alkyl group; R 2 power hydrogen atom or lower alkoxycarbonyl lower alkyl group; R 3 power ί, amidino, power rubamoyl or 2. An anti-Helicobacter agent comprising as an active ingredient a ditrofuran derivative or a salt thereof according to claim 1, which is a thiocarbamoyl group; R 4 is a hydrogen atom, a halogen atom or a lower alkyl group.
3 . R,カ、 ニトロフルフリリデン低級アルキル基; 1^ 2?、 水素原子; R 3f、 アミジノ基; R 45'、 水素原子である請求の範囲 1または 2に記載のニトロフラ ン誘導体またはその塩を有効成分とする抗ヘリコパクター剤。 . 3 R, mosquitoes, nitro furfurylidene lower alkyl group; 1 ^ 2 months, a hydrogen atom;? R 3 force f, amidino group; R 4 force 5 ', Nitorofura to in 1 or 2 according to a hydrogen atom An anti-helicopter agent comprising an active ingredient or a salt thereof as an active ingredient.
4 . 力 水素原子、 低級アルコキシカルボニル、 ニトロフルフリリデンメチ ルまたはヒドロキシィミノメチル基; R 2 、 水素原子またはェトキシカルボ二 ルメチル基; R,力 アミジノ、 力ルバモイ ルまたはチォカルバモイル基; R 4 力;'、 水素原子、 ハロゲン原子または低級アルキル基である請求の範囲 1、 2また は 3に記載のニトロフラン誘導体またはその塩を有効成分とする抗ヘリコパクター 剤。 4. Force hydrogen atom, lower alkoxycarbonyl, nitrofurfurylidenemethyl or hydroxyiminomethyl group; R 2 , hydrogen atom or ethoxycarbonylmethyl group; R, force amidino, force rubamoyl or thiocarbamoyl group; R 4 force; 4. An anti-helicopter agent comprising a nitrofuran derivative or a salt thereof according to claim 1, 2, or 3 which is a hydrogen atom, a halogen atom or a lower alkyl group.
5 . !^カ ニトロフルフリリデンメチル基である請求の範囲 1、 2、 3または 4に記載の二トロフラン誘導体またはその塩を有効成分とする抗ヘリコバクタ一 剤。 Five . ! ^ A nitrofurfurylidenemethyl group according to claims 1, 2, 3 or An anti-Helicobacter agent comprising the ditrofuran derivative or a salt thereof according to 4, as an active ingredient.
6. 1^カ 二ト口フルフリリデンメチル基; R2が、 水素原子; R3が、 アミジ ノ基; R4が、 水素原子である請求の範囲 1、 2、 3、 4または 5に記載のニ ト ロフラン誘導体またはその塩を有効成分とする杭へリコバクタ一剤。 6. A 1 ^ 2 furfurylidenemethyl group; R 2 is a hydrogen atom; R 3 is an amidino group; R 4 is a hydrogen atom, according to claim 1, 2, 3, 4 or 5. A bacterium containing a nitrofuran derivative or a salt thereof as an active ingredient.
PCT/JP1995/001811 1994-09-16 1995-09-13 Anti-helicobacter agent WO1996008247A1 (en)

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