JPS63112578A - Pyrazine derivative - Google Patents

Pyrazine derivative

Info

Publication number
JPS63112578A
JPS63112578A JP25687586A JP25687586A JPS63112578A JP S63112578 A JPS63112578 A JP S63112578A JP 25687586 A JP25687586 A JP 25687586A JP 25687586 A JP25687586 A JP 25687586A JP S63112578 A JPS63112578 A JP S63112578A
Authority
JP
Japan
Prior art keywords
pyratine
tetrazolyl
carboxamide
ethanol
group
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
JP25687586A
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
Kazuya Mitani
見谷 一也
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
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 Hokuriku Pharmaceutical Co Ltd filed Critical Hokuriku Pharmaceutical Co Ltd
Priority to JP25687586A priority Critical patent/JPS63112578A/en
Priority to US06/941,918 priority patent/US4792547A/en
Priority to AU66586/86A priority patent/AU596624B2/en
Priority to AT86117566T priority patent/ATE52090T1/en
Priority to ES198686117566T priority patent/ES2029791T3/en
Priority to DE8686117566T priority patent/DE3670491D1/en
Priority to EP86117566A priority patent/EP0227026B1/en
Priority to CA000525801A priority patent/CA1293251C/en
Priority to YU218986A priority patent/YU46037B/en
Priority to KR860010990A priority patent/KR870006043A/en
Priority to FI865251A priority patent/FI865251A/en
Priority to HU865380A priority patent/HU197001B/en
Priority to DK628086A priority patent/DK628086A/en
Publication of JPS63112578A publication Critical patent/JPS63112578A/en
Pending legal-status Critical Current

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Abstract

NEW MATERIAL:A pyrazine derivative expressed by formula I [R1 and R2 are H, 4-12C alkyl, 3-6C cycloalkyl, phenyl (may be substituted by halogen, alkyl or alkoxy) or forms piperadyl and homopiperadinyl with R1 and R2 and adjacent N] and salt thereof. EXAMPLE:6-(n-Butylamino)-N-(1H-5-tetrazolyl)pyrazine-2-carboxyamide. USE:A remedy for bronchial asthma, etc., having excellent antiallergic action. PREPARATION:A 6-halogenopyrazine derivative expressed by formula II (X is halogen) is reacted with amines expressed by formula III in the absence of a solvent or in the presence of a solvent to provide a compound expressed by formula I.

Description

【発明の詳細な説明】 ・−・ の1 本発明は優れた抗アレルギー作用を宵し、気管支喘息な
どの治療剤として宵月な新規なピラチン誘導体、及びそ
の薬理学的に許容しつる塩に関するものである。
[Detailed Description of the Invention] - Part 1 The present invention relates to a novel pyratine derivative that exhibits excellent anti-allergic action and is useful as a therapeutic agent for bronchial asthma, etc., and a pharmacologically acceptable salt thereof. It is something.

従」ごl支蓋− 本発明のピラチン誘導体に関する文献は見当たらす、ま
た抗アレルギー作用のあることは全(知られていない。
Regarding the piratin derivative of the present invention, no literature has been found, and it is not known that it has an anti-allergic effect.

[1(’  −j占 気管支喘息は、アレルゲンの侵入によりI型アレルギー
反応(アナフィラキシ−反応)が惹起され、肥満細胞か
ら化学伝達物質の遊離が起こることによって発症するこ
とが明らかにされている。
[1(' -jShin) It has been revealed that bronchial asthma develops when a type I allergic reaction (anaphylactic reaction) is induced by the invasion of allergens, and chemical mediators are released from mast cells.

このようなアレルギー性疾患の治療薬として、化学伝達
物質の遊離を阻害する薬剤が用いられるようになってき
た。しかしながら、この種の作用を有する薬剤は数少な
く、又、薬効においても必ずしも満足すべきものとは言
い難い。これらの事情から医薬の場において、新しい抗
アレルギー剤の開発が強く望まれている。
Drugs that inhibit the release of chemical mediators have come to be used as therapeutic agents for such allergic diseases. However, there are only a few drugs that have this type of action, and their efficacy is not necessarily satisfactory. Under these circumstances, there is a strong desire for the development of new antiallergic agents in the medical field.

。日 −−の  ・ 本発明者らは、前述の事情を鑑み鋭意研究した結果、ピ
ラチン誘導体、及びその薬理学的に許容しつる塩が優れ
た抗アレルギー作用を有することを見い出し、本発明を
完成させた。
. Japan - As a result of intensive research in view of the above circumstances, the present inventors have discovered that piratin derivatives and their pharmacologically acceptable vine salts have excellent anti-allergic effects, and have completed the present invention. I let it happen.

即ち、本発明は一般式(I) [式中、R1及びR2は同−又は異なって水素原子、4
〜12個の直鎖又は分枝鎖状の炭素原子を訂するアルキ
ル基、3〜6個の炭素原子を有するシクロアルキル基、
フェニル基(ハロゲン原子。
That is, the present invention relates to general formula (I) [wherein R1 and R2 are the same or different and hydrogen atoms, 4
an alkyl group having ~12 straight-chain or branched carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms,
Phenyl group (halogen atom).

低級アルキル基、低級アルコキシ基で置換してもよい。It may be substituted with a lower alkyl group or a lower alkoxy group.

)を表わすか、又はR工及びR2が隣接する窒素原子と
共に形成するピペラジニル基及びホモピペラジニル基(
低級アルキル基、フェニル基で置換してもよい。)を表
わす。] で示される新規なピラチン誘導体、及びその薬理学的に
許容しうる塩に関するものである。
), or a piperazinyl group and a homopiperazinyl group (
It may be substituted with a lower alkyl group or a phenyl group. ). ] The present invention relates to a novel pyratine derivative represented by the following, and a pharmacologically acceptable salt thereof.

本発明の前記一般式中、R1及びR2で示される4〜1
2個の直鎖又は分枝鎖状の炭素原子を有するアルキル基
としては、たとえば、ブチル、イソブチル、 5eC−
ブチル、 tert−ブチル、ペンチル。
In the general formula of the present invention, 4 to 1 represented by R1 and R2
Examples of alkyl groups having two straight or branched carbon atoms include butyl, isobutyl, 5eC-
Butyl, tert-butyl, pentyl.

ヘキシル、ヘプチル、オクチル、ノニル、デシル。Hexyl, heptyl, octyl, nonyl, decyl.

ウンデシル、ドデシル基等が、3〜6個の炭素原子を有
するシクロアルキル基としては、シクロプロピル、シク
ロブチル、シクロペンチル、シクロヘキシル基等が挙げ
られる。又、フェニル基(ハロゲン原子、低級アルキル
基、低級アルコキン基で置換してもよい。)の置換基と
しては、フッ素。
Examples of cycloalkyl groups such as undecyl and dodecyl groups having 3 to 6 carbon atoms include cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl groups. Further, as a substituent for the phenyl group (which may be substituted with a halogen atom, lower alkyl group, or lower alkokene group), fluorine is used.

塩素、臭素、ヨウ素原子等のハロゲン原子、メチル、エ
チル、プロピル、イソプロピル、ブチル。
Halogen atoms such as chlorine, bromine, and iodine atoms, methyl, ethyl, propyl, isopropyl, and butyl.

イソブチル基等の低級アルキル基、メトキ7.エトキシ
、プロポキン基等の低級アルコキシ基等が挙げられる。
Lower alkyl groups such as isobutyl group, methoxy7. Examples include lower alkoxy groups such as ethoxy and propoquine groups.

又、ピペラジニル基及びホモピペラジニル基(低級アル
キル基、フェニル基で置換してもよい。)の置換基とし
ては、メチル、エチル。
In addition, examples of substituents for the piperazinyl group and homopiperazinyl group (which may be substituted with a lower alkyl group or phenyl group) include methyl and ethyl.

プロピル、イソプロピル、ブチル、イソブチル基等の低
級アルキル基、フェニル基等が挙げられる。
Examples include lower alkyl groups such as propyl, isopropyl, butyl and isobutyl groups, and phenyl groups.

本発明の前記一般式(I)で示される化合物の薬理学的
に許容しうる塩としては、酸付加塩又はアルカリ付加塩
か挙げられ、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、フマール酸、クエン酸、
ンユウ酸、酒石酸等の何機酸塩が、アルカリ付加塩とし
ては、たとえば、ナトリウム、カリウム、カルシウム。
Examples of the pharmacologically acceptable salts of the compound represented by the general formula (I) of the present invention include acid addition salts and alkali addition salts; examples of the acid addition salts include hydrochloric acid, hydrobromic acid , mineral acid salts such as hydroiodic acid, nitric acid, sulfuric acid, phosphoric acid,
Alternatively, acetic acid, maleic acid, fumaric acid, citric acid,
Examples of alkaline addition salts include sodium, potassium, and calcium salts such as uric acid and tartaric acid.

アルミニウム等の金属塩、あるいは、エタノールアミン
、N、N−ジアルキルエタノールアミン。
Metal salts such as aluminum, or ethanolamine, N,N-dialkylethanolamine.

トリス(ハイドロキンメチル)アミノメタン等の有機塩
基の塩等が挙げられる。
Examples include salts of organic bases such as tris(hydroquinemethyl)aminomethane.

本発明に係わる化合物の製造方法によれば、前記一般式
(I)で示される化合物は、次の一般式(n) (式中、Xはハロゲン原子を表わす。)で示される6−
バロゲノピラチン誘導体と、次の一般式(III) (式中、R及びR2は前述と同意義を表わす。)で示さ
れるアミン類とを、無溶媒下あるいは溶媒下において反
応させることにより製造することができる。
According to the method for producing a compound according to the present invention, the compound represented by the general formula (I) is produced by the following general formula (n) (wherein, X represents a halogen atom).
It can be produced by reacting a balogenopyratine derivative with an amine represented by the following general formula (III) (wherein R and R2 have the same meanings as above) in the absence of a solvent or in a solvent. can.

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、水、
メタノール、エタノール、プロパツール、ブタノール等
のアルコール類、エチレングリコールジメチルエーテル
(モノグライム)、ジエチレングリコールジメチルエー
テル(ジグライム)、トリエチレングリコールジメチル
エーテル(トリグライム)等のエーテル類、ジメチルホ
ルムアミド、ジメチルスルホキンド、ヘキサメチルフォ
スホリソクトリアミド等の非プロトン性溶媒、ベンゼン
、トルエン等の芳香族炭化水素系溶媒、あるいは、ピリ
ジン、ピフリン、ルチジン、コリシン、トリエチルアミ
ン等の有機塩基が挙げられ、特にエタノール、ベンゼン
、ジメチルスルホキシドが好ましい。
Any solvent may be used in the method of the present invention as long as it does not inhibit the reaction, such as water,
Alcohols such as methanol, ethanol, propatool, butanol, ethers such as ethylene glycol dimethyl ether (monoglyme), diethylene glycol dimethyl ether (diglyme), triethylene glycol dimethyl ether (triglyme), dimethylformamide, dimethyl sulfokind, hexamethyl phosphoryl Examples include aprotic solvents such as triamide, aromatic hydrocarbon solvents such as benzene and toluene, and organic bases such as pyridine, pifrin, lutidine, colicin, and triethylamine, with ethanol, benzene, and dimethyl sulfoxide being particularly preferred.

又、反応は常圧もしくは加圧下で行なわれ、反応温度は
室温から200″′の範囲で、好ましくは80〜110
6で行なわれる。
Further, the reaction is carried out under normal pressure or increased pressure, and the reaction temperature is in the range of room temperature to 200'', preferably 80 to 110''.
It will be held at 6.

なお、ここで原料となった一般式(n)で示される化合
物は次の様にして製造される。
Incidentally, the compound represented by the general formula (n) used as a raw material here is produced in the following manner.

即ち、前記一般式(II)で示される化合物は、次の一
般式(rV) (式中、Xは前述と同、依義を表わす。)で示されるピ
ラチンカルボン酸誘導体をその反応性誘導体(酸クロリ
ド、M無水物、混合酸無水物で示される5−アミノテト
ラゾールと、塩基の存在下あるいは非存在下、不活性a
機溶媒中で反応させることにより製造することができる
That is, the compound represented by the general formula (II) is a reactive derivative of the piratincarboxylic acid derivative represented by the following general formula (rV) (wherein X represents the same definition as above). (5-aminotetrazole represented by acid chloride, M anhydride, mixed acid anhydride and inactive a
It can be produced by reacting in a solvent.

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、ピリジン、ピコリン、ルチジン、コリジン、N−メ
チルピペリジン、N−メチルピロリジン、N−メチルモ
ルホリン、トリエチルアミン。
Bases used in the method of the invention include, for example, pyridine, picoline, lutidine, collidine, N-methylpiperidine, N-methylpyrrolidine, N-methylmorpholine, triethylamine.

炭酸カリウム、炭酸ナトリウム等が挙げられ、特にトリ
エチルアミンが好ましい。
Examples include potassium carbonate and sodium carbonate, with triethylamine being particularly preferred.

又、本発明の方法において使用される不活性有機溶媒と
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、エーテル、ベンゼン。
Furthermore, any inert organic solvent may be used in the method of the present invention as long as it does not inhibit the reaction.
For example, ether, benzene.

テトラヒドロフラン、ジオキサン、クロロホルム。Tetrahydrofuran, dioxane, chloroform.

塩化メチレン、ジメチルスルホキシド、N、N−ジメチ
ルホルムアミド等が挙げられ、特にテトラヒドロフラン
が好ましい。
Examples include methylene chloride, dimethyl sulfoxide, N,N-dimethylformamide, and tetrahydrofuran is particularly preferred.

又、反応は、−10°から加熱還流下において行われる
が、好ましくは、室温から使用される溶媒の加熱還流下
の間において行われることである。
Further, the reaction is carried out under heating under reflux from -10°, but preferably between room temperature and under heating under reflux of the solvent used.

IL匠 以下、本発明を実施例によって説明する。IL Takumi Hereinafter, the present invention will be explained by examples.

実施例エ ロー(n−ブチルアミノ)−N−(IH−5−テトラゾ
リル)ピラチン−2−カルボキサミドロークロロ−N−
(IH−5−テトラゾリル)ピラチン−2−カルボキサ
ミド2.28gのエタノール30m1懸濁液にn−ブチ
ルアミン4.95m1を加え、21時間加熱還流を行な
う。反応液を減圧下膿縮し、残渣に水及び10%FA酸
を加えpH3とする。析出結晶をろ取し、ジメチルホル
ムアミド−エタノールより再結晶して、融点269〜2
72° (分解)の淡黄色針状晶を2.00g得る。
Example yellow (n-butylamino)-N-(IH-5-tetrazolyl)pyratine-2-carboxamide hydrochloro-N-
4.95 ml of n-butylamine was added to a suspension of 2.28 g of (IH-5-tetrazolyl)pyratine-2-carboxamide in 30 ml of ethanol, and the mixture was heated under reflux for 21 hours. The reaction solution was evaporated under reduced pressure, and water and 10% FA acid were added to the residue to adjust the pH to 3. The precipitated crystals were collected by filtration and recrystallized from dimethylformamide-ethanol to give a melting point of 269-2.
2.00 g of pale yellow needles of 72° (decomposition) are obtained.

元素分析値 CIO814N80 理論値 C、45,80;H,5,38: N 、42
.72実験値 C、45,l1i5 ; H,5,53
; N 、42.83実施例2 6−(インブチルアミノ)−N−(LH−5−テトラゾ
リル)ピラチン−2−カルボキサミドロークロロ−N−
(IH−5−テトラゾリル)ピラチン−2−カルボキサ
ミド2.26gのエタノール30m1F!Ei液にイソ
ブチルアミン4.971111を加え、19時間加熱還
流を行なう。反応液を減圧上濃縮し、残渣に水及び10
%塩酸を加えpH3きする。析出結晶をろ取し、ジメチ
ルホルムアミド−エタノールより再結晶して、融点26
5〜275”  (分解)の淡黄色プリズム品を2.1
0g得る。
Elemental analysis value CIO814N80 Theoretical value C, 45,80; H, 5,38: N, 42
.. 72 Experimental value C, 45, l1i5; H, 5,53
; N, 42.83 Example 2 6-(inbutylamino)-N-(LH-5-tetrazolyl)pyratine-2-carboxamide dichloro-N-
(IH-5-tetrazolyl)pyratine-2-carboxamide 2.26g ethanol 30ml 1F! Isobutylamine 4.971111 was added to the Ei solution, and the mixture was heated under reflux for 19 hours. The reaction solution was concentrated under reduced pressure, and the residue was diluted with water and 10%
% hydrochloric acid to bring the pH to 3. The precipitated crystals were collected by filtration and recrystallized from dimethylformamide-ethanol to give a melting point of 26.
5-275” (disassembled) pale yellow prism product 2.1
Get 0g.

元素分析値 CIO814N80 理論値 C,45,8θ; H,5,38; N 、4
2.72実験値 C、45,77; H,5,38; 
N 、42.82実施例3 6−(see−ブチルアミ/)−N−(tH−5Lテト
ラゾリル)ピラチン−2−カルボキサミドロークロロ−
N−(IH−5−テトラゾリル)ピラチン−2−カルボ
キサミド2.26gのエタノール30m1懸濁液に5e
e−ブチルアミン5.051を加え、47時間加熱還流
を行なう。反応液を減圧下l=縮し、残渣に水及び10
%塩酸を加えp)13とする。析出結晶をろ取し、ジメ
チルホルムアミド−エタノールより再結晶して、融点2
65〜269° (分解)の淡黄色針状品を1.28g
得る。
Elemental analysis value CIO814N80 Theoretical value C, 45, 8θ; H, 5, 38; N, 4
2.72 Experimental value C, 45,77; H, 5,38;
N, 42.82 Example 3 6-(see-butyrami/)-N-(tH-5Ltetrazolyl)pyratine-2-carboxamide dichloro-
5e in a suspension of 2.26 g of N-(IH-5-tetrazolyl)pyratine-2-carboxamide in 30 ml of ethanol.
Add 5.051 g of e-butylamine and heat under reflux for 47 hours. The reaction solution was condensed under reduced pressure, and the residue was mixed with water and 10
Add % hydrochloric acid to make p) 13. The precipitated crystals were collected by filtration and recrystallized from dimethylformamide-ethanol to give a melting point of 2.
1.28g of pale yellow needle-shaped product of 65-269° (decomposition)
obtain.

元素分析値 C工。H工、N80 理論値 C、45,80i H,5,38; N 、4
2.72実験値 C、45,54; H,5,36; 
N 、42.49実施例4 (3−(tert−ブチルアミノ)−N−(IH−5−
テトラゾリル)ピラチン−2−カルボキサミドロークロ
ロ−N−(IH−5−テトラゾリル)ピラチン−2−カ
ルボキサミド2.26gのジメチルスルホキノド151
懸濁液にtert−ブチルアミン5.25m1を加え、
封管中80〜90″で41時間加熱する。反応液に水及
び10%水酸化ナトリウム水を加えアルカリ性とした後
、クロロホルムで洗浄する。水層をろ過した後、ろ液に
10%塩酸を加えてpH3とする。析出結晶をろ取し、
ジメチルホルムアミド−エタノールより再結晶して、融
点266〜2706 (分解)の黄色粉末を1.07g
得る。
Elemental analysis value C engineering. H engineering, N80 Theoretical value C, 45,80i H, 5,38; N, 4
2.72 Experimental value C, 45,54; H, 5,36;
N, 42.49 Example 4 (3-(tert-butylamino)-N-(IH-5-
2.26 g of dimethylsulfoquinode 151
Add 5.25 ml of tert-butylamine to the suspension,
Heat in a sealed tube at 80-90" for 41 hours. Add water and 10% sodium hydroxide to the reaction solution to make it alkaline, then wash with chloroform. After filtering the aqueous layer, add 10% hydrochloric acid to the filtrate. Add to adjust the pH to 3. Filter the precipitated crystals,
Recrystallize from dimethylformamide-ethanol to obtain 1.07g of yellow powder with a melting point of 266-2706 (decomposition).
obtain.

IRスペクトル v (KBr)cII+−1:170
5NMRスペクトル δ(DMSO−d6 )ppm+
1.47(9H,−重線)、7.19(111,−重線
)、8.20(l)I。
IR spectrum v (KBr)cII+-1:170
5NMR spectrum δ(DMSO-d6)ppm+
1.47 (9H, - double line), 7.19 (111, - double line), 8.20 (l) I.

−重線)、8.31(IH,−重線)、11.01(I
n、−重線) 実施例5 6−(ヘキシルアミノ)−N−(IH−5−テトラゾリ
ル)ピラチン−2−カルボキサミドロークロロ−N−(
IH−5−テトラゾリル)ピラチン−2−カルボキサミ
ド2.26gのエタノール30m1懸濁液にn−ヘキシ
ルアミン5.06gを加え、24時間加熱還流を行なう
。反応液を減圧上濃縮し、残渣に水及び10%水酸化ナ
トリウム水を加えアルカリ性とした後、クロロホルムで
洗浄する。水層をろ過した後、ろ液に10%塩酸を加え
てpH3とする。析出結晶をろ取し、ジメチルホルムア
ミド−エタノールより再結晶して、融点263〜267
″′ (分解)の白色羽毛状具を1.95g得る。
- double line), 8.31 (IH, - double line), 11.01 (I
n, - heavy line) Example 5 6-(hexylamino)-N-(IH-5-tetrazolyl)pyratine-2-carboxamidolochloro-N-(
5.06 g of n-hexylamine was added to a suspension of 2.26 g of IH-5-tetrazolyl)pyratine-2-carboxamide in 30 ml of ethanol, and the mixture was heated under reflux for 24 hours. The reaction solution is concentrated under reduced pressure, water and 10% sodium hydroxide are added to the residue to make it alkaline, and the residue is washed with chloroform. After filtering the aqueous layer, 10% hydrochloric acid is added to the filtrate to adjust the pH to 3. The precipitated crystals were collected by filtration and recrystallized from dimethylformamide-ethanol to obtain a melting point of 263-267.
1.95 g of white feather-like material (decomposed) was obtained.

元素分析値 C1□H工8N80 理論値 C、49,G4 ; H、B、25 ; N 
、38J30実験値 C、49,54; H、Ei、2
Ei ; N 、38.48実施例6 6−(ドデシルアミン)−N−(IH−5−テトラゾリ
ル)ピラチン−2−カルボキサミドロークロロ−N−(
IH−5−テトラゾリル)ピラチン−2−カルボキサミ
ド2.26gのエタノール30m1懸濁液にn−ドデシ
ルアミン5.56?を加え、19時間加熱還流を行なう
。反応液を減圧上濃縮し、残渣に水及び10%水酸化ナ
トリウム水を加えてアルカリ性とした後、ろ過する。
Elemental analysis value C1□H engineering 8N80 Theoretical value C, 49, G4; H, B, 25; N
, 38J30 experimental value C, 49,54; H, Ei, 2
Ei;
A suspension of 2.26 g of IH-5-tetrazolyl)pyratine-2-carboxamide in 30 ml of ethanol contains 5.56 ml of n-dodecylamine. was added and heated under reflux for 19 hours. The reaction solution is concentrated under reduced pressure, water and 10% sodium hydroxide are added to the residue to make it alkaline, and then filtered.

結晶に水及び10%塩酸を加えてpH3とした後、結晶
物をろ取し、ジメチルスルホキシド−エタノールより再
結晶して、融点250〜259° (分解)の白色羽毛
状具を2.17g得る。
After adding water and 10% hydrochloric acid to the crystals to adjust the pH to 3, the crystals were collected by filtration and recrystallized from dimethyl sulfoxide-ethanol to obtain 2.17 g of white feather-like material with a melting point of 250-259° (decomposition). .

元素分析値 C1883ON80 理論値 C、57,73; H,8,07; N 、2
9.92実験値 C、57,85; H,8,09; 
N 、29.92実施例7 6−(シクロプロピルアミノ)−N−(IH−5−テト
ラゾリル)ピラチン−2−カルボキサミド ロークロロ−N−(LH−5−テトラゾリル)ピラチン
−2−カルボキサミド2.26gのエタノール30nl
懸濁液にシクロプロピルアミノ6゜92m1を加え、封
管中80〜906で96時間加熱する。反応液を減圧上
濃縮し、残渣に水及び10%水酸化ナトリウム水を加え
アルカリ性とした後、クロロホルムで洗浄する。水層を
ろ過した後、ろ液に10%塩酸を加えてpH3とする。
Elemental analysis value C1883ON80 Theoretical value C, 57,73; H, 8,07; N, 2
9.92 Experimental value C, 57,85; H, 8,09;
N, 29.92 Example 7 6-(Cyclopropylamino)-N-(IH-5-tetrazolyl)pyratine-2-carboxamide Dorochloro-N-(LH-5-tetrazolyl)pyratine-2-carboxamide 2.26 g of ethanol 30nl
Add 92 ml of 6° cyclopropylamino to the suspension and heat in a sealed tube at 80-906 for 96 hours. The reaction solution is concentrated under reduced pressure, water and 10% sodium hydroxide are added to the residue to make it alkaline, and the residue is washed with chloroform. After filtering the aqueous layer, 10% hydrochloric acid is added to the filtrate to adjust the pH to 3.

析出結晶をろ取し、ジメチルスルホキンドーエタノール
より再結晶して、融点272〜280° (分解)の淡
黄色粉末を1.34g得る。
The precipitated crystals were collected by filtration and recrystallized from dimethylsulfoquine ethanol to obtain 1.34 g of pale yellow powder with a melting point of 272-280° (decomposition).

元素分析値 C9H1oN80 理論値 C、43,90; H,4,09; N 、4
5.51実験値 C、44,01; H,4,20; 
N 、45.70実施例8 6−(シクロへキフルアミノ)−N−(IH−5−テト
ラゾリル)ピラチン−2−カルボキサミド ロークロロ−N−(IH−5−テトラゾリル)ピラチン
−2−カルボキサミド2.26gのエタノール30m1
懸濁液にシクロヘキシルアミン5゜72m1を加え、4
8時間加熱還流を行なう。反応液を減圧上濃縮し、残渣
に水及び10%水酸化ナトリウム水を加えアルカリ性と
した後、クロロホルムで洗浄する。水層をろ過した後、
ろ液に10%塩酸を加えてpH3とする。析出結晶をろ
取し、ジメチルスルホキシド−エタノールより再結晶し
て、融点287〜291° (分解)の淡黄色羽毛状品
を1.85g得る。
Elemental analysis value C9H1oN80 Theoretical value C, 43,90; H, 4,09; N, 4
5.51 Experimental value C, 44,01; H, 4,20;
N, 45.70 Example 8 6-(Cyclohexyfluamino)-N-(IH-5-tetrazolyl)pyratine-2-carboxamide Dolochloro-N-(IH-5-tetrazolyl)pyratine-2-carboxamide 2.26 g of ethanol 30ml
Add 5.72ml of cyclohexylamine to the suspension,
Heat and reflux for 8 hours. The reaction solution is concentrated under reduced pressure, water and 10% sodium hydroxide are added to the residue to make it alkaline, and the residue is washed with chloroform. After filtering the water layer,
Add 10% hydrochloric acid to the filtrate to adjust the pH to 3. The precipitated crystals were collected by filtration and recrystallized from dimethyl sulfoxide-ethanol to obtain 1.85 g of a pale yellow feather-like product with a melting point of 287-291° (decomposed).

元素分析値 C12HI3 N s O理論値 C、4
9,99; H,5,59; N 、38.87実験値
 C、49,99; H,5,7[i ; N 、38
.88実施例9 6−(フェニルアミノ)−N−(IH−5−テトラゾリ
ル)ピラチン−2−カルボキサミドロークロロ−N−(
IH−5−テトラゾリル)ピラチン−2−カルボキサミ
ド1.13gのジメチルスルホキシド5鱈懸濁液にアニ
リン4.55m1を加え、80〜90°で17時間加熱
する。反応液に水及び10%水酸化すl−IJウム水を
加え、クロロホルムで洗浄する。水層をろ過後、ろ液を
10%塩酸でpH3とする。析出結晶をろ取し、ジメチ
ルスルホキシド−エタノールより再結晶して、融点29
0〜293.5’  (分解)の黄色羽毛状品を0.8
0g得る。
Elemental analysis value C12HI3 N s O theoretical value C, 4
9,99; H, 5,59; N, 38.87 Experimental value C, 49,99; H, 5,7 [i; N, 38
.. 88 Example 9 6-(phenylamino)-N-(IH-5-tetrazolyl)pyratine-2-carboxamide hydrochloro-N-(
4.55 ml of aniline is added to a cod suspension containing 1.13 g of IH-5-tetrazolyl)pyratine-2-carboxamide in dimethyl sulfoxide, and the mixture is heated at 80-90° for 17 hours. Water and 10% sodium hydroxide solution were added to the reaction solution, and the mixture was washed with chloroform. After filtering the aqueous layer, the filtrate is adjusted to pH 3 with 10% hydrochloric acid. The precipitated crystals were collected by filtration and recrystallized from dimethyl sulfoxide-ethanol to give a melting point of 29.
0 to 293.5' (decomposed) yellow feathery product to 0.8
Get 0g.

元素分析値 C1281ON80 理論値 C、51,0G ; H,3,57;N 、3
9.70実験値 C、51,1G ; H,3,8G 
; N 、39.Ei8実施例10 6− [(3−クロロフェニル)アミノコ−N−(IH
−5−テトラゾリル)ピラチン−2−カルボキサミド ロークロロ−N−(IH−5−テトラゾリル)ピラチン
−2−カルボキサミド1.13gのジメチルスルホキシ
ド10m1懸濁液にm−クロロホルム75.39m1を
加え、80〜θO°で7G時間加熱する。反応液に水及
び10%水酸化ナトIJウム水を加え、クロロホルムで
洗浄する。水層をろ過後、ろ液を10%塩酸でpH3と
する。析出結晶をろ取し、ジメチルホルムアミド−エタ
ノールより再結晶して、融点281〜289° (分解
)の黄色粉末を0.34g得る。
Elemental analysis value C1281ON80 Theoretical value C, 51,0G; H, 3,57; N, 3
9.70 Experimental value C, 51,1G; H, 3,8G
; N, 39. Ei8 Example 10 6-[(3-chlorophenyl)aminoco-N-(IH
75.39 ml of m-chloroform was added to a suspension of 1.13 g of -5-tetrazolyl)pyratine-2-carboxamide hydrochloro-N-(IH-5-tetrazolyl)pyratine-2-carboxamide in 10 ml of dimethyl sulfoxide. Heat for 7 G hours at °C. Water and 10% sodium hydroxide solution were added to the reaction solution, and the mixture was washed with chloroform. After filtering the aqueous layer, the filtrate is adjusted to pH 3 with 10% hydrochloric acid. The precipitated crystals were collected by filtration and recrystallized from dimethylformamide-ethanol to obtain 0.34 g of a yellow powder with a melting point of 281-289° (decomposed).

元素分析値 CHClN80 理論値 C、45,51; H,2,8Ei ; N 
、35.38実験値 C、45,2Ei ; H,3,
10; N 、35.03実施例11 6− [(2−メチルフェニル)アミノ]−N−(IH
−5−テトラゾリル)ピラチン−2−カルボキサミド ロークロロ−N−(IH−5−テトラゾリル)ピラチン
−2−カルボキサミド1.13gのジメチルスルホキシ
ド5ml懸濁液に0−トルイジン5゜35m1を加え、
100〜110’で24時間加熱する。反応液に水及び
10%水酸化ナトリウム水を加え、クロロホルムで洗浄
する。水層をろ過後、ろ液を10%塩酸でpH3とする
。析出結晶をろ取し、ツメチルホルムアミド−エタノー
ルより再結晶して、融点277〜282° (分解)の
黒黄色粉末を0.19g得る。
Elemental analysis value CHClN80 Theoretical value C, 45,51; H, 2,8Ei; N
, 35.38 experimental value C, 45,2Ei; H, 3,
10; N, 35.03 Example 11 6-[(2-methylphenyl)amino]-N-(IH
-5-Tetrazolyl)pyratine-2-carboxamide Hydrochloro-N-(IH-5-tetrazolyl)pyratine-2-carboxamide 1.13g suspension in 5ml of dimethyl sulfoxide was added with 5°35ml of 0-toluidine,
Heat at 100-110' for 24 hours. Water and 10% aqueous sodium hydroxide are added to the reaction mixture, and the mixture is washed with chloroform. After filtering the aqueous layer, the filtrate is adjusted to pH 3 with 10% hydrochloric acid. The precipitated crystals were collected by filtration and recrystallized from trimethylformamide-ethanol to obtain 0.19 g of a black-yellow powder with a melting point of 277-282° (decomposed).

元素分析値 C13H12N80 理論値 CI 52.70 ; H14,08; N 
、37.82実験値 C、52,85; H,4,28
; N 、38.18実施例12 6−[(3−メチルフェニル)アミノ]−N−(IH−
5−テトラゾリル)ピラチン−2−カルボキサミド ロークロロ−N−(LH−5−テトラゾリル)ピラチン
−2−カルボキサミド1.13gのジメチルスルホキシ
ド10m1懸濁、夜に国−トルインン5、4mlを加え
、100〜110’で22時間加熱する。反応液に水及
び10%水酸化ナトリウム水を加え、クロロホルムで洗
浄する。水層をろ過後、ろ液を10%塩酸でpH3とす
る。析出結晶をろ取し、ジメチルスルホキシド−エタノ
ールより再結晶して、融点278.5〜284° (分
解)の黄色羽毛献品を0.68g得る。
Elemental analysis value C13H12N80 Theoretical value CI 52.70; H14,08; N
, 37.82 experimental value C, 52,85; H, 4,28
; N, 38.18 Example 12 6-[(3-methylphenyl)amino]-N-(IH-
Suspend 1.13 g of 5-tetrazolyl)pyratine-2-carboxamide hydrochloro-N-(LH-5-tetrazolyl)pyratine-2-carboxamide in 10 ml of dimethyl sulfoxide, add 5.4 ml of toluin in the evening, and add 100 to 110 'Heat for 22 hours. Water and 10% aqueous sodium hydroxide are added to the reaction mixture, and the mixture is washed with chloroform. After filtering the aqueous layer, the filtrate is adjusted to pH 3 with 10% hydrochloric acid. The precipitated crystals were collected by filtration and recrystallized from dimethyl sulfoxide-ethanol to obtain 0.68 g of a yellow feather offering having a melting point of 278.5-284° (decomposed).

元素分析値 C13H12N80 理論値 C、52,70; H,4,08; N 、3
7.82実験値 C、52,56; H,4,17; 
N 、38.18実施例13 6− [(4−メチルフェニル)アミノコ−N−(IH
−5−テトラゾリル)ピラチン−2−カルボキサミド ロークロロ−N−(IH−5−テトラゾリル)ピラチン
−2−カルボキサミド1.13gのジメチルスルホキシ
ド151懸濁液にp−)ルイジン5.36gを加え、8
0〜90″で18時間更に100〜110°で6時間加
熱する。反応液に水及び10%水酸化ナトリウム水を加
え、クロロホルムで洗浄する。水層をろ過後、ろ液を1
0%塩酸でpH3とする。析出結晶をろ取し、ジメチル
スルホキシド−メタノールより再結晶して、融点289
.5〜294’  (分解)の黄色羽毛献品を0゜93
g得る。
Elemental analysis value C13H12N80 Theoretical value C, 52,70; H, 4,08; N, 3
7.82 Experimental value C, 52,56; H, 4,17;
N, 38.18 Example 13 6-[(4-methylphenyl)aminoco-N-(IH
5.36 g of p-)luidine was added to a suspension of 1.13 g of -5-tetrazolyl)pyratine-2-carboxamide hydrochloro-N-(IH-5-tetrazolyl)pyratine-2-carboxamide in 151 dimethyl sulfoxide.
Heat at 0 to 90° for 18 hours and then at 100 to 110° for 6 hours. Add water and 10% sodium hydroxide to the reaction solution, and wash with chloroform. After filtering the aqueous layer, the filtrate is
Adjust to pH 3 with 0% hydrochloric acid. The precipitated crystals were collected by filtration and recrystallized from dimethyl sulfoxide-methanol to give a melting point of 289.
.. 5-294' (decomposed) yellow feather offering at 0°93
g get.

元素分析値 C工3H工2N80 理論値 C、52,70; H,4,08; N 、3
7.82実験値 C、52,83; H,4,29; 
N 、38.08実施例14 8− [(4−メトキシフェニル)アミノコ−N−(I
H−5−テトラゾリル)ピラチン−2−カルボキサミド ロークロロ−N−(IH−5−テトラゾリル)ピラチン
−2−カルボキサミド1.13gのジメチルスルホキ7
115m1懸濁液にp−アニンジン6.16gを加え、
80〜90°で18時間加熱する。反応液に水及び10
%水酸化ナトリウム水を加え、クロロホルムで洗浄する
。水層をろ過後、ろ液を10%塩酸でpH3とする。析
出結晶をろ取し、ジメチルスルホキシド−メタノールよ
り再結晶して、融点291〜294° (分解)の黄橙
色粉末を1.02g得る。
Elemental analysis value C engineering 3H engineering 2N80 Theoretical value C, 52,70; H, 4,08; N, 3
7.82 Experimental value C, 52,83; H, 4,29;
N, 38.08 Example 14 8-[(4-methoxyphenyl)aminoco-N-(I
H-5-tetrazolyl)pyratine-2-carboxamide Dorochloro-N-(IH-5-tetrazolyl)pyratine-2-carboxamide 1.13 g dimethylsulfo 7
Add 6.16 g of p-aningine to 115 ml of suspension,
Heat at 80-90° for 18 hours. Water and 10% in the reaction solution
% sodium hydroxide solution and wash with chloroform. After filtering the aqueous layer, the filtrate is adjusted to pH 3 with 10% hydrochloric acid. The precipitated crystals were collected by filtration and recrystallized from dimethyl sulfoxide-methanol to obtain 1.02 g of a yellow-orange powder with a melting point of 291-294° (decomposed).

元素分析値 C13H12N8 o2 理論値 C、50,00; H,3,87; N 、3
5.88実験値 C、50,08; H,4,05;N
 、3B、05実施例15 8−(1−ピペラジニル)−N−(IH−5−テトラゾ
リル)ピラチン−2−カルボキサミドロークロロ−N−
(IH−5−テトラゾリル)ピラチン−2−カルボキサ
ミド2.26gのエタノール50m1懸濁液に無水ピペ
ラジン8.61gを加え、22時間加熱還流する。反応
混合物をろ取する。黄色結晶に水及び10%水酸化ナト
リウム水を加え、アルカリ性とした後、クロロホルムで
洗浄する。水層を10%塩酸でpH8とする。結晶を水
及び10%水酸化ナトリウム水を加えアルカリ性とし溶
解した後、10%塩酸でpH8とする。
Elemental analysis value C13H12N8 o2 Theoretical value C, 50,00; H, 3,87; N, 3
5.88 Experimental value C, 50,08; H, 4,05; N
, 3B, 05 Example 15 8-(1-piperazinyl)-N-(IH-5-tetrazolyl)pyratine-2-carboxamide dichloro-N-
8.61 g of anhydrous piperazine is added to a suspension of 2.26 g of (IH-5-tetrazolyl)pyratine-2-carboxamide in 50 ml of ethanol, and the mixture is heated under reflux for 22 hours. The reaction mixture is filtered. Water and 10% sodium hydroxide are added to the yellow crystals to make them alkaline, and then washed with chloroform. The aqueous layer is adjusted to pH 8 with 10% hydrochloric acid. The crystals are made alkaline and dissolved by adding water and 10% aqueous sodium hydroxide, and then adjusted to pH 8 with 10% hydrochloric acid.

析出結晶をろ取し、融点300°以上の淡黄色粉末品を
1.68g得る。
The precipitated crystals were collected by filtration to obtain 1.68 g of a pale yellow powder product with a melting point of 300° or higher.

IRスペクトル ν(KBr)cm−’ :IEi9O
NMRスペクトル δ(CF3GOOD )ppm :
2.70−2.95(4H,多重線L3.35−3.5
4(4[(、多重線)、8.87(I)I、−重線)、
8.89(IH,−重線)実施例16 6−(4−メチル−1−ピペラジニル)−N−(IH−
5−テトラゾリル)ピラチン−2−カルボキサミド・塩
酸塩・1永和物 6−クロロ−N−(IH−5−テトラゾリル)ピラチン
−2−カルボキサミド2.26gのエタノール30m1
!!l!!濁液にN−メチルピペラジン5゜55m1を
加え、6時間加熱還流する。反応液にエタノール性塩酸
を加えてpH1とする。析出結晶をろ取し、ジメチルス
ルホキンドーメタノールより「ヰ結晶して、融点246
〜250’  (分解)の淡黄色粉末を2.27g得る
IR spectrum ν(KBr)cm-': IEi9O
NMR spectrum δ(CF3GOOD) ppm:
2.70-2.95 (4H, multiplet L3.35-3.5
4 (4 [(, multiplet), 8.87 (I) I, - multiplet),
8.89 (IH, - heavy line) Example 16 6-(4-methyl-1-piperazinyl)-N-(IH-
2.26 g of 5-tetrazolyl)pyratine-2-carboxamide hydrochloride 1-eternal 6-chloro-N-(IH-5-tetrazolyl)pyratine-2-carboxamide in 30 ml of ethanol
! ! l! ! Add 5.55 ml of N-methylpiperazine to the suspension, and heat under reflux for 6 hours. Add ethanolic hydrochloric acid to the reaction solution to adjust the pH to 1. The precipitated crystals were collected by filtration and crystallized from dimethylsulfoquine-methanol to give a melting point of 246.
Obtain 2.27 g of a pale yellow powder of ~250' (decomposition).

元素分析値 C工、H工、N90 ・HCI・H20理
論値 C、38,43; H,5,28i N 、38
.67実験値 C、38,G2 ; H,5,15; 
N 、311i、71実施例17 6−(4−エチル−1−ピペラジニル)−N−(IH−
5−テトラゾリル)ピラチン−2−カルボキサミド・塩
酸塩 6−クロロ−N−(IH−5−テトラゾリル)ピラチン
−2−カルボキサミド2.28gのエタノール30m1
懸濁液にN−エチルピペラジン4゜56gを加え、24
時間加熱還流する。反応液を減圧上留去し、残渣に水及
び10Vo水酸化すl−IJウム水を加え、アルカリ性
とした後、クロロホルムで洗浄する。水層を10%塩酸
でpH3とする。
Elemental analysis values C, H, N90 ・HCI/H20 theoretical values C, 38,43; H, 5,28i N, 38
.. 67 Experimental value C, 38, G2; H, 5, 15;
N, 311i, 71 Example 17 6-(4-ethyl-1-piperazinyl)-N-(IH-
2.28 g of 5-tetrazolyl)pyratine-2-carboxamide hydrochloride 6-chloro-N-(IH-5-tetrazolyl)pyratine-2-carboxamide in 30 ml of ethanol
Add 4.56 g of N-ethylpiperazine to the suspension,
Heat to reflux for an hour. The reaction solution was distilled off under reduced pressure, and the residue was made alkaline by adding water and 10 Vo sodium hydroxide solution, and then washed with chloroform. The aqueous layer is adjusted to pH 3 with 10% hydrochloric acid.

析出結晶をろ取し、ジメチルスルホキシド−メタノール
より再結晶して、融点230〜243゜(分解)の黄色
粉末品を2.32g得る。
The precipitated crystals were collected by filtration and recrystallized from dimethyl sulfoxide-methanol to obtain 2.32 g of a yellow powder with a melting point of 230-243° (decomposed).

元素分析値 CI2 G17 N 90  ・HCI理
論値 C、42,42; H,5,34; N 、37
.10実験値 C、42,59; H,5,55; N
 、38.83実施例18 6−(4−フェニル−1−ピペラジニル)−N−(IH
−5−テトラゾリル)ピラチン−2−カルボキサミド ロークロロ−N−(IH−5−テトラゾリル)ピラチン
−2−カルボキサミド2.26gのエタノール3Qn+
1懸濁液にN−フェニルピペラジン4.58m1を加え
、17時間加熱還流を行なう。反応液にエタノール性塩
酸を加えてpH2とした後。
Elemental analysis value CI2 G17 N 90 ・HCI theoretical value C, 42,42; H, 5,34; N, 37
.. 10 Experimental values C, 42,59; H, 5,55; N
, 38.83 Example 18 6-(4-phenyl-1-piperazinyl)-N-(IH
-5-tetrazolyl)pyratine-2-carboxamide Hydrochloro-N-(IH-5-tetrazolyl)pyratine-2-carboxamide 2.26 g of ethanol 3Qn+
4.58 ml of N-phenylpiperazine was added to the suspension and heated under reflux for 17 hours. After adding ethanolic hydrochloric acid to the reaction solution to adjust the pH to 2.

析出結晶をろ取する。得られた結晶に水及び10%塩酸
を加えてpH3とする。析出結晶をろ取し、ジメチルホ
ルムアミド−エタノールより再結晶して、融点250〜
262° (分解)の黄色針状晶を2.17g得る。
Filter the precipitated crystals. Water and 10% hydrochloric acid are added to the obtained crystals to adjust the pH to 3. The precipitated crystals were collected by filtration and recrystallized from dimethylformamide-ethanol to give a melting point of 250~
2.17 g of yellow needles of 262° (decomposition) are obtained.

元素分析値 C16G17 N 90 理論値 C、54,fli9 ; H,4,84; N
 、35.88実験値 C、54,[1lli ; H
,4,92; N 、3Ei、02実施例19 6−(1−ホモピペラジニル)−N−(IH−5−テト
ラゾリル)ピラチン−2−カルボキサミド ロークロロ−N−(IH−5−テトラゾリル)ピラチン
−2−カルボキサミド2.28gのエタノール50ml
FM濁液にホモピペラジン10.0gを加え、23時間
加熱還流する。反応混合物をろ取する。黄色結晶に水及
び10%水酸化ナトリウム水を加え、アルカリ性とした
後、クロロホルムで洗浄する。水層を10%塩酸でpH
8とする。結晶を水及び10%水酸化すl−IJウム水
を加え、アルカリ性とし溶解した後、10%塩酸でpH
8とする。析出結晶をろ取すると、融点295〜300
6以上(分解)の淡黄色粉末品を1.87g得る。
Elemental analysis value C16G17 N 90 Theoretical value C, 54, fli9; H, 4, 84; N
, 35.88 experimental value C, 54, [1lli; H
,4,92;N,3Ei,02Example 19 6-(1-homopiperazinyl)-N-(IH-5-tetrazolyl)pyratine-2-carboxamidolochloro-N-(IH-5-tetrazolyl)pyratine-2 - 2.28 g of carboxamide in 50 ml of ethanol
Add 10.0 g of homopiperazine to the FM suspension and heat under reflux for 23 hours. The reaction mixture is filtered. Water and 10% sodium hydroxide are added to the yellow crystals to make them alkaline, and then washed with chloroform. pH the aqueous layer with 10% hydrochloric acid.
8. The crystals were made alkaline and dissolved by adding water and 10% sodium hydroxide water, and then adjusted to pH with 10% hydrochloric acid.
8. When the precipitated crystals are collected by filtration, the melting point is 295-300.
Obtain 1.87 g of a light yellow powder of 6 or more (decomposition).

元素分析値 C工、H工、N90 理論値 C、45,G7 ; H,5,23; N 、
43.57実験値 C、45,37; H,5,42;
 N 、43.42実施例20 6−(4−メチル−1−ホモピペラジニル)−N−(I
H−5−テトラゾリル)ピラチン−2−カルボキサミド ロークロロ−N−(IH−5−テトラゾリル)ピラチン
−2−カルボキサミド2.28gのエタノール30m1
懸濁液にN−メチルホモピペラジン4.56gを加え、
18時間加熱還流する。反応液をエタノール性塩酸にて
p)11とする。析出結晶をろ取し、結晶に水及び10
%水酸化ナトリウム水を加え、アルカリ性とした後ろ過
する。ろ液を10%塩酸でpH8とする。結晶を水及び
10%水酸化ナトリウム水を加え、アルカリ性とし溶解
した後、10%塩酸でpH8とする。析出結晶をろ取し
、融点300°以上の微黄色粉末品を1.30g得る。
Elemental analysis values C, H, N90 Theoretical values C, 45, G7; H, 5, 23; N,
43.57 Experimental value C, 45,37; H, 5,42;
N, 43.42 Example 20 6-(4-methyl-1-homopiperazinyl)-N-(I
2.28 g of H-5-tetrazolyl)pyratine-2-carboxamide hydrochloro-N-(IH-5-tetrazolyl)pyratine-2-carboxamide in 30 ml of ethanol
Add 4.56 g of N-methylhomopiperazine to the suspension,
Heat to reflux for 18 hours. The reaction solution was adjusted to p)11 with ethanolic hydrochloric acid. The precipitated crystals were collected by filtration, and the crystals were mixed with water and 10
% sodium hydroxide solution to make alkaline, and then filter. The filtrate is adjusted to pH 8 with 10% hydrochloric acid. The crystals are made alkaline and dissolved by adding water and 10% aqueous sodium hydroxide, and then adjusted to pH 8 with 10% hydrochloric acid. The precipitated crystals were collected by filtration to obtain 1.30 g of a pale yellow powder product with a melting point of 300° or higher.

元素分析値 Cl2H17N90 理論値 C、47,52; H,5,85; N 、4
]、50実験値 C、47,71; H,5,Ei6 
; N 、41.321豆Δ肱装 この様にして製造される前記一般式(I)で示される新
規なピラチン誘導体、及びその薬理学的に許容しつる塩
は、優れた抗アレルギー作用を有し、気管支喘息、アレ
ルギー性胃腸障害、枯草熱。
Elemental analysis value Cl2H17N90 Theoretical value C, 47,52; H, 5,85; N, 4
], 50 experimental value C, 47, 71; H, 5, Ei6
; N , 41.321 Bean Δ肱SO The novel pyratine derivative represented by the general formula (I) and its pharmacologically acceptable salts produced in this way have excellent antiallergic effects. and bronchial asthma, allergic gastrointestinal disorders, and hay fever.

じん麻疹、アレルギー性鼻炎、アレルギー性結膜炎等の
治療剤として極めて有用である。
It is extremely useful as a therapeutic agent for urticaria, allergic rhinitis, allergic conjunctivitis, etc.

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及びR_2は同一又は異なって水素原子
、4〜12個の直鎖又は分枝鎖状の炭素原子を有するア
ルキル基、3〜6個の炭素原子を有するシクロアルキル
基、フェニル基(ハロゲン原子、低級アルキル基、低級
アルコキシ基で置換してもよい。)を表わすか、又はR
_1及びR_2が隣接する窒素原子と共に形成するピペ
ラジニル基及びホモピペラジニル基(低級アルキル基、
フェニル基で置換してもよい。)を表わす。] で示されるピラチン誘導体、及びその薬理学的に許容し
うる塩。
[Claims] General formula▲ Numerical formula, chemical formula, table, etc.▼ [In the formula, R_1 and R_2 are the same or different and have a hydrogen atom and 4 to 12 straight or branched carbon atoms represents an alkyl group, a cycloalkyl group having 3 to 6 carbon atoms, a phenyl group (which may be substituted with a halogen atom, a lower alkyl group, or a lower alkoxy group), or R
Piperazinyl group and homopiperazinyl group (lower alkyl group,
It may be substituted with a phenyl group. ). ] A pyratine derivative represented by the following, and a pharmacologically acceptable salt thereof.
JP25687586A 1985-12-26 1986-10-30 Pyrazine derivative Pending JPS63112578A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
JP25687586A JPS63112578A (en) 1986-10-30 1986-10-30 Pyrazine derivative
US06/941,918 US4792547A (en) 1985-12-26 1986-12-15 Pyrazine-2-carboxamide derivatives useful in treating allergic disease
AU66586/86A AU596624B2 (en) 1985-12-26 1986-12-16 N-(5-tetrazolyl) pyrazine-2-carboxamides and their use as anti-allergic agents
AT86117566T ATE52090T1 (en) 1985-12-26 1986-12-17 PYRAZIN DERIVATIVES, PROCESSES FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS THEREOF.
ES198686117566T ES2029791T3 (en) 1985-12-26 1986-12-17 A PROCEDURE FOR THE PREPARATION OF PIRAZINE DERIVATIVES.
DE8686117566T DE3670491D1 (en) 1985-12-26 1986-12-17 PYRAZINE DERIVATIVES, METHOD FOR THE PRODUCTION THEREOF AND PHARMACEUTICAL COMPOSITIONS WITH THESE.
EP86117566A EP0227026B1 (en) 1985-12-26 1986-12-17 Pyrazine derivative, a process for preparation thereof and pharmaceutical composition therefrom
CA000525801A CA1293251C (en) 1985-12-26 1986-12-18 Pyrazine derivative, a process for preparation thereof and pharmaceutical composition therefrom
YU218986A YU46037B (en) 1985-12-26 1986-12-19 PROCEDURE FOR OBTAINING NEW PYRAZINE DERIVATIVES
KR860010990A KR870006043A (en) 1985-12-26 1986-12-20 Pyrazine derivatives manufacturing method and pharmaceutical composition
FI865251A FI865251A (en) 1985-12-26 1986-12-22 PYRAZINDERIVAT, FOERFARANDE FOER DESS FRAMSTAELLNING OCH DESS FARMACEUTISK BLANDNING.
HU865380A HU197001B (en) 1985-12-26 1986-12-22 Process for producing new pyrazine derivatives and pharmaceuticals comprising same
DK628086A DK628086A (en) 1985-12-26 1986-12-23 PYRAZINE DERIVATIVES AND PHARMACEUTICAL ACCEPTABLE SALTS AND PROCEDURES FOR THE PREPARATION AND PHARMACEUTICAL COMPOSITION CONTAINING SAME

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25687586A JPS63112578A (en) 1986-10-30 1986-10-30 Pyrazine derivative

Publications (1)

Publication Number Publication Date
JPS63112578A true JPS63112578A (en) 1988-05-17

Family

ID=17298625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25687586A Pending JPS63112578A (en) 1985-12-26 1986-10-30 Pyrazine derivative

Country Status (1)

Country Link
JP (1) JPS63112578A (en)

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