JPH02174784A - Isothiazoloquinoline derivative - Google Patents

Isothiazoloquinoline derivative

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Publication number
JPH02174784A
JPH02174784A JP63327761A JP32776188A JPH02174784A JP H02174784 A JPH02174784 A JP H02174784A JP 63327761 A JP63327761 A JP 63327761A JP 32776188 A JP32776188 A JP 32776188A JP H02174784 A JPH02174784 A JP H02174784A
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JP
Japan
Prior art keywords
acid
formula
present
derivative
general formula
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
JP63327761A
Other languages
Japanese (ja)
Inventor
Yasuo Ito
伊藤 安夫
Hideo Kato
日出男 加藤
Eiichi Ecchu
越中 栄一
Nobuo Ogawa
小川 信男
Noriyuki Yagi
八木 典幸
Toshihiko Yoshida
敏彦 吉田
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.)
Abbott Japan Co Ltd
Original Assignee
Hokuriku Pharmaceutical Co Ltd
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Filing date
Publication date
Application filed by Hokuriku Pharmaceutical Co Ltd filed Critical Hokuriku Pharmaceutical Co Ltd
Priority to JP63327761A priority Critical patent/JPH02174784A/en
Publication of JPH02174784A publication Critical patent/JPH02174784A/en
Pending legal-status Critical Current

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  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

NEW MATERIAL:The compound of formula I [R<1> is lower (hydroxy)alkyl; R<2> and R<3> are H or lower alkyl; n is 2 or 3; R<2> and R<3> are not H at the same time when R<1> is methyl]. EXAMPLE:9-Cyclopropyl-6-fluoro-7-(3-hydroxymethyl-1-piperazinyl)-isoth iazolo[5,4- b]quinoline-3,4(2H,9H)-dione. USE:Antibacterial agent against gram-positive bacteria and gram-negative bacteria. PREPARATION:A 7-halogenoisothiazoloquinoline derivative of formula II (x is halogen) is made to react with a cyclic amine compound of formula III in a solvent optionally in the presence of a base.

Description

【発明の詳細な説明】 −の1 本発明は優れた抗菌作用を仔し医薬品として有用な新規
なインチアゾロキノリン誘導体及びその薬理学的に許容
しつる酸付加塩に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (1) The present invention relates to novel inthiazoloquinoline derivatives that have excellent antibacterial activity and are useful as pharmaceuticals, and their pharmacologically acceptable phosphoric acid addition salts.

従」LO丑」【 ナリジクス酸からの流れを受けついで発展して来た合成
抗菌剤はナフチリジン環、ベンゾオキサノン環あるいは
キノリン環を母核とする合成抗菌剤が主流であり、本発
明に係るインチアゾロキノリン誘導体については全く知
られていない。
Synthetic antibacterial agents that have been developed following the trend from nalidixic acid are mainly synthetic antibacterial agents that have a naphthyridine ring, benzoxanone ring, or quinoline ring as their core, and the present invention Nothing is known about inthiazoloquinoline derivatives.

ナフチリジン環及びキノリン系の合成抗菌剤は、ノルフ
ロキサシンの発見以来、画期的な進歩をもたらし、その
適応症は***症にとどまらずあらゆる感染症に有効
であることが示されている。
Synthetic antibacterial agents based on naphthyridine rings and quinolines have brought breakthroughs since the discovery of norfloxacin, and have been shown to be effective for all kinds of infections, not just urinary tract infections.

又、その作用機序は、DNA立体化酵素であるDNAジ
ャイレースの阻害作用であり、抗生物質の如きプラスミ
ドによる耐性の伝達が起こらないことも知られている。
It is also known that its mechanism of action is the inhibition of DNA gyrase, a DNA stericase, and that transmission of resistance by plasmids, such as with antibiotics, does not occur.

しかしながら、近年臨床の場では着実に非感受性閑の増
加が見られてきていることも事実である。これらのこと
から、既存の合成抗菌剤が完成された薬物であるとは言
い難く、臨床上での必要性からより優れた抗菌剤の登場
が強く望まれている。
However, it is also true that in recent years there has been a steady increase in the number of non-susceptible patients in the clinical setting. For these reasons, it is difficult to say that existing synthetic antibacterial agents are perfect drugs, and the emergence of better antibacterial agents is strongly desired due to clinical necessity.

の 本発明者らは、前述の事情を鑑み鋭意研究した結果、本
発明に係る新規なインチアゾロキノリン誘導体及びその
薬理学的に許容しつる酸付加塩が優れた抗菌作用を有す
ることを見い出し、本発明を完成させた。
As a result of intensive research in view of the above-mentioned circumstances, the present inventors have discovered that the novel inthiazoloquinoline derivative and its pharmacologically acceptable acid addition salt thereof according to the present invention have excellent antibacterial activity, The present invention has been completed.

即ち、本発明は次の一般式(I) (式中、R1は低級アルキル基又はヒドロキシ低級アル
キル基を、R2及びR3は同一もしくは異なって水素原
子又は低級アルキル基を表わし、nは2又は3の整数を
表わす。ただし、R1がメチル基を表わす時、R2及び
R3は同時に水素原子を表わさない。) で示されるインチアゾロキノリン誘導体及びその薬理学
的に許容しうる酸付加塩に関するものである。
That is, the present invention relates to the following general formula (I) (wherein R1 represents a lower alkyl group or a hydroxy lower alkyl group, R2 and R3 are the same or different and represent a hydrogen atom or a lower alkyl group, and n is 2 or 3 (However, when R1 represents a methyl group, R2 and R3 do not represent a hydrogen atom at the same time.) and its pharmacologically acceptable acid addition salts. .

本発明の前記一般式(I)中、R工、R2及びR3で示
される低級アルキル基としては、たとえば、メチル基、
エチル基、n−プロピル基、イソプロピル基、n−ブチ
ル基、 5ec−ブチル基、 tert−ブチル基等が
X R1で示されるヒドロキシ低級アルキル基としては
、たとえば、ヒドロキシメチル基。
In the general formula (I) of the present invention, the lower alkyl group represented by R, R2 and R3 includes, for example, a methyl group,
An example of the hydroxy lower alkyl group represented by R1 is a hydroxymethyl group.

2−ヒドロキシエチル基、3−ヒドロキシプロピル基、
4−ヒドロキシブチル基等が挙げられる。
2-hydroxyethyl group, 3-hydroxypropyl group,
Examples include 4-hydroxybutyl group.

本発明の前記一般式(I)で示される化合物の薬理学的
に許容しつる酸付加塩としては、たとえば、塩酸、臭化
水素酸、ヨウ化水素酸、硝酸、硫酸、燐酸等の鉱酸塩、
あるいは、酢酸、マレイン酸、フマル酸、クエン酸、リ
ンゴ酸、シュウ酸。
Examples of the pharmacologically acceptable acid addition salts of the compound represented by the general formula (I) of the present invention include mineral acids such as hydrochloric acid, hydrobromic acid, hydroiodic acid, nitric acid, sulfuric acid, and phosphoric acid. salt,
Or acetic acid, maleic acid, fumaric acid, citric acid, malic acid, oxalic acid.

酒石酸、  メタンスルホン酸、 10−カンファース
ルホン酸、マンデル酸等の有機酸塩が挙げられる。
Examples include organic acid salts such as tartaric acid, methanesulfonic acid, 10-camphorsulfonic acid, and mandelic acid.

本発明の前記一般式(I)で示される化合物は7位環状
アミン基に不斉炭素原子を有しており、これらは光学活
性体として存在し得るため、これらの光学活性体も本発
明の化合物に包含される。
The compound represented by the general formula (I) of the present invention has an asymmetric carbon atom in the 7-position cyclic amine group, and these can exist as optically active forms. Therefore, these optically active forms are also included in the present invention. Included in compounds.

本発明の前記一般式(I)で示されるインチアゾロキノ
リン誘導体は種々の方法により製造することができる。
The inthiazoloquinoline derivative represented by the general formula (I) of the present invention can be produced by various methods.

本発明に係る化合物の製造方法の第一の様式によれば、
前記一般式(I)で示される化合物は、次の一般式(I
I) (式中、Xはハロゲン原子を表わす。)で示される7−
バロゲンイソチアゾロキノリン誘導体と、次の一般式(
III) (式中、R工 R2、R3及びnは前述と同意義 を表わす。) でボされる環伏アミン化合物を、溶媒中塩基の存在下又
は非存在下で反応させることにより製造することができ
る。
According to the first mode of the method for producing a compound according to the present invention,
The compound represented by the general formula (I) is represented by the following general formula (I).
I) 7- represented by (wherein, X represents a halogen atom)
A balogen isothiazoquinoline derivative and the following general formula (
III) (In the formula, R2, R3 and n represent the same meanings as above.) Produced by reacting a cyclic amine compound represented by the formula in the presence or absence of a base in a solvent. Can be done.

本発明の方法において使用される溶媒としては、反応を
阻害しない限りいかなるものでもよく、たとえば、アセ
トニトリル、N、N−ジメチルホルムアミド、N−メチ
ル−2−ピロリドン、ジメチルスルホキシド、ヘキサメ
チルフォスポリツクトリアミド等の非プロトン性極性溶
媒、ベンゼン。
Any solvent may be used in the method of the present invention as long as it does not inhibit the reaction, such as acetonitrile, N,N-dimethylformamide, N-methyl-2-pyrrolidone, dimethylsulfoxide, hexamethylphosphoric acid, etc. Aprotic polar solvents such as amides, benzene.

トルエン等の芳香族炭化水素系溶媒、ピリノン。Aromatic hydrocarbon solvents such as toluene, pyrinone.

ピコリン、ルチジン、コリジン等の有機塩基あるいはこ
れらの混合溶媒が挙げられる。
Examples include organic bases such as picoline, lutidine, and collidine, and mixed solvents thereof.

本発明の方法において使用される塩基としては、たとえ
ば、トリエチルアミン、1,8−ジアザビシクロ[:5
.4.0]−7−ウンデセン、炭酸ナトリウム、炭酸カ
リウム等が挙げられ、又、反応は水冷下から溶媒の還流
温度までの範囲で行われる。
Bases used in the method of the invention include, for example, triethylamine, 1,8-diazabicyclo[:5
.. 4.0]-7-undecene, sodium carbonate, potassium carbonate, etc., and the reaction is carried out at a temperature ranging from water cooling to the reflux temperature of the solvent.

本発明の方法において出発原料となった前記−般式(n
)で示される7−バロゲノイソチアゾロキノリン誘導体
もまた新規な化合物であり、以下の図に示す様にして製
造され、それらを参考例に記載した。
In the method of the present invention, the starting material is the general formula (n
The 7-valogenoisothiazoloquinoline derivatives represented by ) are also new compounds, and were produced as shown in the figures below, and are described in Reference Examples.

(式中、Xは前述と同意義を表わす。)本発明に係る化
合物の製造方法の第二の様式によれば、前記一般式CI
)で示される化合物のうち、R2が低級アルキル基であ
る化合物は、前記一般式(I)中、R2が水素原子であ
る化合物をアルキル化することにより製造することがで
きる。
(In the formula, X represents the same meaning as defined above.) According to the second mode of the method for producing a compound according to the present invention,
) Among the compounds represented by formula (1), a compound in which R2 is a lower alkyl group can be produced by alkylating a compound in which R2 is a hydrogen atom in the general formula (I).

本発明の方法において使用されるアルキル化剤としては
、ハロゲン化低級アルキルもしくはアルデヒド化合物が
挙げられ、ハロゲン化低級アルキルを用いる場合は、溶
媒中、脱酸剤としての塩基の存在下又は非存在下で反応
させ、又、アルデヒド化合物を用いる場合はギ酸の存在
下に反応させることにより製造することができる。
The alkylating agent used in the method of the present invention includes a halogenated lower alkyl or an aldehyde compound, and when a halogenated lower alkyl is used, the alkylating agent is used in a solvent, in the presence or absence of a base as a deoxidizing agent. Alternatively, when an aldehyde compound is used, it can be produced by reacting it in the presence of formic acid.

本発明の方法において用いられるハロゲン化低級アルキ
ルとしては、たとえば、ヨウ化メチル。
Examples of the lower alkyl halide used in the method of the present invention include methyl iodide.

ヨウ化エチル、臭化エチル、臭化ブチル等が、溶媒とし
ては、たとえば、N、N−ジメチルホルムアミド、アセ
トン、エタノール、テトラヒドロフラン、ベンゼン、ク
ロロホルム等が挙げられ、脱酸剤としての塩基としては
、たとえば、トリエチルアミン、炭酸カリウム等が挙げ
られる。
Examples of solvents include ethyl iodide, ethyl bromide, butyl bromide, etc.; examples of solvents include N,N-dimethylformamide, acetone, ethanol, tetrahydrofuran, benzene, and chloroform; examples of bases as deoxidizers include: Examples include triethylamine, potassium carbonate, and the like.

又、本発明の方法のうち、アルデヒド化合物を用いる場
合のアルデヒド化合物としては、たとえば、ホルムアル
デヒド、アセトアルデヒド、プロピオンアルデヒド等が
挙げられ、ホルムアルデヒドはホルムアルデヒド水溶液
(ホルマリン)として使用することが好ましく、又、ア
セトアルデヒド及びプロピオンアルデヒドを使用する時
は、ニトロベンゼンを溶媒として用いることが好ましい
Further, in the method of the present invention, when an aldehyde compound is used, examples of the aldehyde compound include formaldehyde, acetaldehyde, propionaldehyde, etc., and formaldehyde is preferably used as an aqueous formaldehyde solution (formalin); When using propionaldehyde, it is preferable to use nitrobenzene as a solvent.

又、反応は室l」から200’の範囲で行われる。Further, the reaction is carried out in a range from 1' to 200'.

この様にして製造される前記一般式(I)で示される新
規なインチアゾロキノリン誘導体及びその薬理学的に許
容しつる酸付加塩は、医薬品として一般に用いられる製
剤添加物を用いて、常法により錠剤、散剤、カプセル剤
、注射剤1点眼剤。
The novel inthiazoloquinoline derivative represented by the general formula (I) and its pharmacologically acceptable acid addition salt produced in this way can be prepared by a conventional method using formulation additives commonly used as pharmaceuticals. Tablets, powders, capsules, injections and 1 eye drop.

点鼻剤又は外用剤等の製剤とすることができ、経口又は
非経口投与することにより臨床に供される。
It can be made into formulations such as nasal drops or external preparations, and is clinically administered by oral or parenteral administration.

L胤■ 以下、本発明を参考例及び実施例によって説明するが、
本発明はこれらの実施例の特定の細部に限定されるもの
ではない。
Ltane ■ The present invention will be explained below by reference examples and examples.
The invention is not limited to the specific details of these examples.

参考例1 1−7クロプロピルー6.7−ジフルオロ−14−ジヒ
ドロ−2−メチルスルフィニル−4−オキソキノリン−
3−カルボン酸エチル1−シクロプロピル−8,7−ジ
フルオロ−14−ジヒドロ−2−メチルチオ−4−オキ
ソキノリン−3−カルボン酸エチル1.OOgの塩化メ
チレン100m1溶液に、80%メタクロロ過安息香酸
0.70gを加え室温で5.5時間撹拌する。反応液に
水を加え、水洗、乾燥後溶媒を減圧留去する。残渣にエ
ーテルを加え析出結晶をろ取し、無色結晶0.71gを
得る。ベンゼンより再結晶して融点213〜214°の
無色針状晶を得る。
Reference example 1 1-7 clopropyl-6,7-difluoro-14-dihydro-2-methylsulfinyl-4-oxoquinoline-
Ethyl 3-carboxylate 1-cyclopropyl-8,7-difluoro-14-dihydro-2-methylthio-4-oxoquinoline-3-carboxylate 1. 0.70 g of 80% metachloroperbenzoic acid was added to a solution of OOg in 100 ml of methylene chloride, and the mixture was stirred at room temperature for 5.5 hours. Water is added to the reaction solution, washed with water, and after drying, the solvent is distilled off under reduced pressure. Ether was added to the residue and the precipitated crystals were collected by filtration to obtain 0.71 g of colorless crystals. Recrystallization from benzene gives colorless needle crystals with a melting point of 213-214°.

元素分析値 C工。H工、F2N04S理論値 C,5
4,08; H、4,25; N 、 3.94実験値
 C,54,87; H、4,39; N 、 3.9
1参考例2 1−7りロプロピルー6.7−ジフルオロ−14−ジヒ
ドロ−2−メルカプト−4−オキソキノリン−3−カル
ボン酸エチル 1−シクロプロピル−6,7−ジフルオロ−14−ノヒ
ドロー2−メチルスルフイニル−4−オキソキノリン−
3−カルボン酸エチル0.71gのテトラヒドロフラン
10−1懸濁液に、IN水硫化ナトリウム水/8液2.
21を加え3時間室温撹拌する。反応液を減圧濃縮し、
残渣を炭酸水素ナトリウム0.25g及び水20−1に
溶解する。
Elemental analysis value C engineering. H engineering, F2N04S theoretical value C, 5
4,08; H, 4,25; N, 3.94 Experimental value C, 54,87; H, 4,39; N, 3.9
1 Reference Example 2 Ethyl 1-7-difluoro-14-dihydro-2-mercapto-4-oxoquinoline-3-carboxylate 1-cyclopropyl-6,7-difluoro-14-nohydro-2-methyl Sulfinyl-4-oxoquinoline-
To a suspension of 0.71 g of ethyl 3-carboxylate in tetrahydrofuran 10-1, IN sodium hydrogen sulfide water/8 solution 2.
Add 21 and stir at room temperature for 3 hours. Concentrate the reaction solution under reduced pressure,
The residue is dissolved in 0.25 g of sodium bicarbonate and 20 parts of water.

水溶液をエーテル洗浄後、水層に希塩酸を加えpH3と
し、析出結晶をろ取して融点91〜93″の赤色結晶0
.50gを得る。
After washing the aqueous solution with ether, dilute hydrochloric acid was added to the aqueous layer to adjust the pH to 3, and the precipitated crystals were collected by filtration.
.. Obtain 50g.

元素分析値 C15H13F 2 NO3S理論値 C
,55,38; H、4,03; N 、 4.31実
験値 C,55,23; H、4,35; N 、 4
.32参考例3 9−シクロプロピル−6,7−ジフルオロイソチアゾロ
[5,4−b]キノリン−3,4(289H)−ジオン 1−シクロプロピル−6,7−ジフルオロ−14−ジヒ
ドロ−2−メルカプト−4−オキソキノリン−3−カル
ボン酸0.45g、炭酸水素ナトリウム0.87g及び
テトラヒドロフラン51の水20■1溶液に、ヒドロキ
シルアミン−〇−スルホン酸0.36gを加え2時間室
温撹拌する。
Elemental analysis value C15H13F 2 NO3S theoretical value C
,55,38; H,4,03; N,4.31 Experimental value C,55,23; H,4,35; N,4
.. 32 Reference Example 3 9-Cyclopropyl-6,7-difluoroisothiazolo[5,4-b]quinoline-3,4(289H)-dione 1-cyclopropyl-6,7-difluoro-14-dihydro-2- To a solution of 0.45 g of mercapto-4-oxoquinoline-3-carboxylic acid, 0.87 g of sodium hydrogen carbonate, and 51 parts of tetrahydrofuran in 20 parts of water was added 0.36 g of hydroxylamine-〇-sulfonic acid, and the mixture was stirred at room temperature for 2 hours.

反応液に希塩酸を加えpH3とし析出結晶をろ取する。Dilute hydrochloric acid is added to the reaction solution to adjust the pH to 3, and the precipitated crystals are collected by filtration.

得られた結晶をメタノール洗浄して融点282〜287
° (分解)の淡黄色結晶0.24gを得る。
The obtained crystals were washed with methanol to give a melting point of 282 to 287.
0.24 g of pale yellow crystals (decomposition) are obtained.

元素分析値 C13H8F2 N 202 S理論値 
C,53,08; H、2,74; N 、 9.52
実験値 C,53,04; H、3,09i N 、 
9.34実施例1 9−シクロプロピル−6−フルオロ−7−(3−ヒトロ
キシメチルーl−ピペラジニル)−イソチアゾロ[5,
4−bコキノリン−3,4(2H9H)−ジオン 9−シクロプロピル−6,7−ジフルオロインチアゾロ
[5,4−bコキノリン−3,4(2H9H)−ジオン
0.50gのピリジン8.51M1&!液に、2−ヒド
ロキシメチルピペラジン0゜39g、1.8−ジアザビ
シクロ[5,4,Oコー7−ウンデセン0.52gを加
え3時間還流し、さらに2−ヒドロキシメチルピペラジ
ン0.10gを加えて1時間還流する。反応液の溶媒を
留去し、残渣に酢酸エチルを加え析出結晶をろ取する。
Elemental analysis value C13H8F2 N 202 S theoretical value
C, 53,08; H, 2,74; N, 9.52
Experimental value C, 53,04; H, 3,09i N,
9.34 Example 1 9-Cyclopropyl-6-fluoro-7-(3-hydroxymethyl-l-piperazinyl)-isothiazolo[5,
4-b coquinoline-3,4(2H9H)-dione 9-cyclopropyl-6,7-difluorothiazolo[5,4-b coquinoline-3,4(2H9H)-dione 0.50 g of pyridine 8.51 M1 &! To the solution, 0.39 g of 2-hydroxymethylpiperazine and 0.52 g of 1,8-diazabicyclo[5,4,O-7-undecene were added, and the mixture was refluxed for 3 hours. Reflux for an hour. The solvent of the reaction solution was distilled off, ethyl acetate was added to the residue, and the precipitated crystals were collected by filtration.

結晶を水に懸濁させ、10%水酸化ナトリウム水溶液に
てpH11とした後、10%塩酸でpH8〜9とし、析
出結晶をろ取する。結晶をメタノールに懸濁させ、エタ
ノール性塩酸を加えてpH1〜2とする。析出結晶をろ
取し、水及び10%塩酸に加熱溶解し、10%水酸化ナ
トリウム水溶液でpH8〜9とする。析出結晶をろ取し
、融点275〜280° (分解)の淡褐色結晶を得る
The crystals are suspended in water, the pH is adjusted to 11 with a 10% aqueous sodium hydroxide solution, the pH is adjusted to 8 to 9 with 10% hydrochloric acid, and the precipitated crystals are collected by filtration. The crystals are suspended in methanol and ethanolic hydrochloric acid is added to adjust the pH to 1-2. The precipitated crystals are collected by filtration, heated and dissolved in water and 10% hydrochloric acid, and adjusted to pH 8-9 with a 10% aqueous sodium hydroxide solution. The precipitated crystals are collected by filtration to obtain pale brown crystals with a melting point of 275-280° (decomposed).

元素分析値 C工。H工、FN403S@H20理論値
 C,52,93;H、5,18;N 、13.72実
験値 C,53,22; H、5,30; N 、13
.59実施例1と同様にして実施例2〜3の化合物を得
る。
Elemental analysis value C engineering. H Engineering, FN403S@H20 Theoretical value C, 52,93; H, 5, 18; N, 13.72 Experimental value C, 53, 22; H, 5, 30; N, 13
.. 59 Compounds of Examples 2 and 3 are obtained in the same manner as in Example 1.

実施例2 9−シクロプロピル−7−(3,5−ジメチル1−ピペ
ラジニル)−6−フルオロイソチアゾロ[5,4−b]
キノリン−3,4(2H,9H)−ジオン働塩酸塩 性状 無色結晶(F20) 融点 288〜293@ (分解) 元素分析値 C工9H2□FN402S・HCI・F2
0 理論値 C,51,52; H,5,4G; N、12
.65実験値 C,51,G3; H、5,31; N
 、12.58実施例3 9−7クロプロピルー6−フルオロー7−(1−ホモピ
ペラジニル)−インチアゾロ[5,4−bコキノリン−
3,4(2H,9H)−ジオン性状 淡黄色結晶(F2
0) 融点 290〜295° (分解) 元素分析値 C,、H,、FN40□S # H20理
論値 C,55,09; H、5,39; N 、14
.28実験値 C,55,03; H、5,42; N
 、14.05光」IQ」L呆− この様にして製造される前記一般式(1)で示される新
規なインチアゾロキノリン誘導体、及びその薬理学的に
許容しろる酸付加塩は、グラム陽 性菌、 ダラム陰性菌に対して広い抗菌作用を存し、医薬として
極めて有用である。
Example 2 9-cyclopropyl-7-(3,5-dimethyl 1-piperazinyl)-6-fluoroisothiazolo[5,4-b]
Quinoline-3,4(2H,9H)-dione hydrochloride Properties Colorless crystals (F20) Melting point 288-293@ (decomposition) Elemental analysis values C-9H2□FN402S・HCI・F2
0 Theoretical value C, 51, 52; H, 5, 4G; N, 12
.. 65 experimental value C, 51, G3; H, 5, 31; N
, 12.58 Example 3 9-7 clopropyl-6-fluoro-7-(1-homopiperazinyl)-inthiazolo[5,4-b coquinoline-
3,4(2H,9H)-dione Properties Pale yellow crystals (F2
0) Melting point 290-295° (decomposition) Elemental analysis value C,, H,, FN40□S # H20 theoretical value C, 55,09; H, 5,39; N, 14
.. 28 Experimental value C, 55,03; H, 5,42; N
, 14.05 Hikari'IQ'L - The novel inthiazoloquinoline derivative represented by the general formula (1) and its pharmacologically acceptable acid addition salt produced in this manner are Gram-positive. It has a wide range of antibacterial effects against bacteria and Durham-negative bacteria, making it extremely useful as a medicine.

Claims (1)

【特許請求の範囲】 一般式 ▲数式、化学式、表等があります▼ (式中、R_1は低級アルキル基又はヒドロキシ低級ア
ルキル基を、R_2及びR_3は同一もしくは異なって
水素原子又は低級アルキル基を表わし、nは2又は3の
整数を表わす。ただし、R_1がメチル基を表わす時、
R_2及びR_3は同時に水素原子を表わさない。) で示されるイソチアゾロキノリン誘導体及びその薬理学
的に許容しうる酸付加塩。
[Claims] General formula ▲ Numerical formula, chemical formula, table, etc. , n represents an integer of 2 or 3. However, when R_1 represents a methyl group,
R_2 and R_3 do not represent hydrogen atoms at the same time. ) isothiazoquinoline derivatives and pharmacologically acceptable acid addition salts thereof.
JP63327761A 1988-12-27 1988-12-27 Isothiazoloquinoline derivative Pending JPH02174784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63327761A JPH02174784A (en) 1988-12-27 1988-12-27 Isothiazoloquinoline derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63327761A JPH02174784A (en) 1988-12-27 1988-12-27 Isothiazoloquinoline derivative

Publications (1)

Publication Number Publication Date
JPH02174784A true JPH02174784A (en) 1990-07-06

Family

ID=18202694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63327761A Pending JPH02174784A (en) 1988-12-27 1988-12-27 Isothiazoloquinoline derivative

Country Status (1)

Country Link
JP (1) JPH02174784A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7199128B2 (en) 2005-02-02 2007-04-03 Achillion Pharmaceuticals, Inc. 8-N-substituted-2H-isothiazolo[5,4-b]quinolizine-3,4-diones and related compounds as antiinfective agents
US7659399B2 (en) 2005-01-05 2010-02-09 Achillion Pharmaceuticals, Inc. 1-thia-2,4a-diaza-cyclopenta[b]napththalene-3,4-diones and related compounds as anti-infective agents
US8044204B2 (en) 2005-07-27 2011-10-25 Achillion Pharmaceuticals, Inc. 8-methoxy-9H-isothiazolo[5,4-b]quinoline-3,4-diones and related compounds as anti-infective agents
US8114888B2 (en) 2005-02-16 2012-02-14 Achillion Pharmaceuticals, Inc. Isothiazoloquinolones and related compounds as anti-infective agents
US8173636B2 (en) 2009-04-03 2012-05-08 Achillion Pharmaceuticals, Inc. Hydroxylthienoquinolones and related compounds as anti-infective agents

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7659399B2 (en) 2005-01-05 2010-02-09 Achillion Pharmaceuticals, Inc. 1-thia-2,4a-diaza-cyclopenta[b]napththalene-3,4-diones and related compounds as anti-infective agents
US7199128B2 (en) 2005-02-02 2007-04-03 Achillion Pharmaceuticals, Inc. 8-N-substituted-2H-isothiazolo[5,4-b]quinolizine-3,4-diones and related compounds as antiinfective agents
US8114888B2 (en) 2005-02-16 2012-02-14 Achillion Pharmaceuticals, Inc. Isothiazoloquinolones and related compounds as anti-infective agents
US8044204B2 (en) 2005-07-27 2011-10-25 Achillion Pharmaceuticals, Inc. 8-methoxy-9H-isothiazolo[5,4-b]quinoline-3,4-diones and related compounds as anti-infective agents
US8946422B2 (en) 2005-07-27 2015-02-03 Achillion Pharmaceuticals, Inc. 8-methoxy-9H-isothiazolo[5,4-B]quinoline-3,4-diones and related compounds as anti-infective agents
US8173636B2 (en) 2009-04-03 2012-05-08 Achillion Pharmaceuticals, Inc. Hydroxylthienoquinolones and related compounds as anti-infective agents

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