JPS631938B2 - - Google Patents

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Publication number
JPS631938B2
JPS631938B2 JP9459779A JP9459779A JPS631938B2 JP S631938 B2 JPS631938 B2 JP S631938B2 JP 9459779 A JP9459779 A JP 9459779A JP 9459779 A JP9459779 A JP 9459779A JP S631938 B2 JPS631938 B2 JP S631938B2
Authority
JP
Japan
Prior art keywords
water
present
compound
dimethoxyphenethyl
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.)
Expired
Application number
JP9459779A
Other languages
Japanese (ja)
Other versions
JPS5618947A (en
Inventor
Tosaku Miki
Masahide Asano
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.)
Daiichi Pharmaceutical Co Ltd
Original Assignee
Daiichi 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 Daiichi Pharmaceutical Co Ltd filed Critical Daiichi Pharmaceutical Co Ltd
Priority to JP9459779A priority Critical patent/JPS5618947A/en
Priority to DK343479A priority patent/DK149748C/en
Priority to CA000333939A priority patent/CA1110628A/en
Priority to ES483484A priority patent/ES483484A1/en
Priority to DE7979103116T priority patent/DE2962567D1/en
Priority to EP79103116A priority patent/EP0009608B1/en
Priority to AT0570879A priority patent/AT367397B/en
Priority to US06/070,085 priority patent/US4297357A/en
Publication of JPS5618947A publication Critical patent/JPS5618947A/en
Publication of JPS631938B2 publication Critical patent/JPS631938B2/ja
Granted legal-status Critical Current

Links

Description

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

本発明は式() で示される新規化合物、2−(3−カルバモイル
フエニルアミノ)−N−(3・4−ジメトキシフエ
ネチル)アセトアミド・三水晶に関する。本発明
化合物は優れた抗潰瘍作用を呈し、医薬として極
めて有用な化合物である。 本発明者等は、先に、式() (式中、X1は低級アルコキシ基を、X2は水素原
子又は低級アルコキシ基を、Rはハロゲン原子、
カルバモイル基、低級アルコキシ基、スルフアモ
イル基、アミノ基、低級アルキルチオ基、低級ア
ルキルアミノ基、水酸基、低級アルコキシカルボ
ニル基等の置換基の一種又はそれ以上が置換する
こともあるフエニル基、ピリジル基、ピリミジニ
ル基又はベンゾイル基を意味する。)で示される
新規N−フエネチルアセトアミド誘導体又はその
酸付加塩が優れた抗潰瘍作用を呈することを見い
出し特許出願をした。(特願昭53−103652号参照) その後、本発明者等は、上記式()の化合物
中の代表例、即ち、置換基X1及びX2がメトキシ
基であつてかつ置換基Rがカルバモイルフエニル
基である2−(3−カルバモイルフエニルアミノ)
−N−(3・4−ジメトキシフエネチル)アセト
アミド及びその酸付加塩(以下、それぞれ単に無
水物及び酸付加塩と略称す)について、特に製剤
上の観点から鋭意検討を試みた結果、これ等無水
物及び/又は酸付加塩を、水と処理した場合、3
モルの水を結晶水として保持する安定な水化物に
変換させうること及びかくして得られる式()
で示される水化物(以下、水化物と略称す)は特
に製剤上優れた性状を呈することを見い出し本発
明を完成した。 本発明の目的化合物、即ち、式()で示され
る水化物を製するには、無水物及び/又は酸付加
塩を水で処理すればよい。更に詳しくは、無水物
及び/又は酸付加塩を水に懸濁、好ましくは溶解
させ、数時間乃至数十時間室温ないし加温下撹拌
した後、そのまま又は冷却後放置すれば水化物が
晶析する。析出晶を濾取、室温下風乾すれば本発
明化合物がえられる。なお、無水物及び/又は酸
付加塩は水に対し難溶性であるため、無水物及
び/又は酸付加塩を水と処理するに際し適当な親
水性有機溶媒、例えば、低級アルコール、アセト
ン、ジオキサン等を溶解補助の目的で加えること
も可能である。 かくして得られる本発明化合物が、2−(3−
カルバモイルフエニルアミノ)−N−(3・4−ジ
メトキシフエネチル)アセトアミド1分子に水3
分子が結晶水として結合した新規な水化物である
ことは、元素分析値、融点、示差熱分析、赤外吸
収スペクトル、X線回析等で確認された。 本発明の水化物は、酸付加塩及び無水物と同
様、従来の抗潰瘍剤に比べ特異的かつ優れた抗潰
瘍作用を呈する。 本発明の水化物の優れた抗潰瘍作用は高木、岡
部等の水浸拘束ストレス潰瘍法(ジヤパニーズ・
ジヤーナル・オブ・フアーマコロジイ、18巻、9
頁、1968年参照)に準じた抗潰瘍作用試験等によ
り確認された。即ち、実験動物として一群7匹の
ラツト(体重300g前後)を選び、水温21℃、7
時間、水浸拘束して作成した実験潰瘍に対する抑
制効果を著明な市販抗潰瘍剤スルピリドと対比し
た結果は表−1に示される通りであり、本発明の
水化物の優れた抗潰瘍作用は明らかである。
The present invention is based on the formula () This invention relates to a novel compound, 2-(3-carbamoylphenylamino)-N-(3,4-dimethoxyphenethyl)acetamide tricrystal. The compound of the present invention exhibits excellent anti-ulcer activity and is an extremely useful compound as a medicine. The inventors previously proposed the formula () (In the formula, X 1 is a lower alkoxy group, X 2 is a hydrogen atom or a lower alkoxy group, R is a halogen atom,
Phenyl group, pyridyl group, pyrimidinyl which may be substituted with one or more substituents such as carbamoyl group, lower alkoxy group, sulfamoyl group, amino group, lower alkylthio group, lower alkylamino group, hydroxyl group, lower alkoxycarbonyl group, etc. or benzoyl group. We have discovered that the novel N-phenethylacetamide derivative shown in ) or its acid addition salt exhibits excellent anti-ulcer activity, and have filed a patent application. (See Japanese Patent Application No. 53-103652.) Thereafter, the present inventors discovered a representative example of the compound of the above formula (), in which substituents X 1 and X 2 are methoxy groups and substituent R is carbamoyl. 2-(3-carbamoylphenylamino) which is a phenyl group
-N-(3,4-dimethoxyphenethyl)acetamide and its acid addition salts (hereinafter simply referred to as anhydrides and acid addition salts, respectively), as a result of intensive studies especially from the viewpoint of formulation. When the isoanhydrides and/or acid addition salts are treated with water, 3
that moles of water can be converted into a stable hydrate that retains water as crystallization water, and the formula thus obtained ()
The present invention was completed based on the discovery that the hydrate represented by (hereinafter abbreviated as hydrate) exhibits particularly excellent properties in terms of formulation. To produce the target compound of the present invention, ie, the hydrate represented by formula (), an anhydride and/or an acid addition salt may be treated with water. More specifically, if the anhydride and/or acid addition salt is suspended, preferably dissolved, in water, stirred at room temperature or warm for several hours to several tens of hours, and then left as is or after cooling, the hydrate will crystallize. do. The precipitated crystals are collected by filtration and air-dried at room temperature to obtain the compound of the present invention. In addition, since the anhydride and/or acid addition salt is poorly soluble in water, when treating the anhydride and/or acid addition salt with water, a suitable hydrophilic organic solvent such as lower alcohol, acetone, dioxane, etc. It is also possible to add for the purpose of solubilizing. The compound of the present invention thus obtained is 2-(3-
1 molecule of carbamoylphenylamino)-N-(3,4-dimethoxyphenethyl)acetamide and 3 parts water
It was confirmed by elemental analysis, melting point, differential thermal analysis, infrared absorption spectrum, X-ray diffraction, etc. that this is a novel hydrate in which molecules are combined as crystal water. The hydrate of the present invention, like acid addition salts and anhydrides, exhibits specific and superior anti-ulcer effects compared to conventional anti-ulcer agents. The excellent anti-ulcer effect of the hydrate of the present invention is due to the water immersion restraint stress ulcer method of Takagi, Okabe et al.
Journal of Pharmacology, Volume 18, 9
This was confirmed by an antiulcer effect test, etc., according to the authors (Refer to Page, 1968). That is, a group of 7 rats (weighing around 300 g) were selected as experimental animals, and the water temperature was 21°C.
Table 1 shows the results of comparing the inhibitory effect on experimental ulcers prepared by immersion in water for a period of time with that of sulpiride, a prominent commercially available anti-ulcer agent. it is obvious.

【表】 更に本発明化合物の抗潰瘍作用は極めて注目す
べき特徴を有するものである。即ち、従来の抗潰
瘍剤が主に局所性のものであるのに対し、本発明
化合物は中枢性抗潰瘍作用を発揮するものであ
り、新しいタイプの抗潰瘍剤として極めて有用な
ものである。このことはシールド法(ブリテイツ
シユ・ジヤーナル・オブ・フアーマコロジイ13
巻、54頁、1958年)の変法による胃液分泌抑制試
験等により確認された。更に詳しくは、本発明化
合物を30%プロピレングリコール含有の生理食塩
水に溶解した溶液を調製し、ラツトに静脈内投与
した。その結果、インスリン投与により惹起され
たいわゆる中枢性胃酸分泌作用を著しく抑制する
が、その投与量の5倍量又は10倍量のいずれの投
与量においても、塩化カルプロニウムに起因する
末梢性胃酸分泌作用を抑制しなかつた。又、本発
明化合物のマウスによる急性毒性試験(経口投
与)を行なつた結果、LD50は2g/Kg以上であ
り、本発明化合物が極めて低毒性のものであるこ
とが判明した。 なお、本発明化合物と化学構造上、幾分か類似
するものとして3・4−ジハイドロキシフエネチ
ルアミン(ドパミン)が抗潰瘍作用を有すること
は知られている。しかしながら、ドパミンは血液
脳関門を通過しえないものであること(L.S.グツ
ドマン、A.ジルマン編、ザ・フアーマコロジカ
ル・ベイシス・オブ・セラピユーチクス、第4
版、234頁、1970年参照)からその抗潰瘍作用が
中枢作用に基づくものではないことは明白であ
り、本発明化合物の場合とは本質的に作用機序を
異にするものである。更にドパミンは本来、シヨ
ツク治療剤として循環器系に強い作用を表わすも
のであることはよく知られるところであり(応用
薬理8巻(6)835〜846頁、1974年参照)、抗潰瘍剤
としては適切でないことは明白である。本剤の投
与量は投与方法によつても異なるが、動物実験の
結果からして50〜450mg/日の投与量で十分であ
ると考えられる。 本発明の水化物は特に製剤学上特徴を有するも
のである。即ち、通常医薬品の投与に際しては、
種々の剤型、例えば、カプセル、錠剤、散剤、注
射剤、坐剤等の任意の型に公知の製剤技術により
製剤化して使用されるものであるが、抗潰瘍剤と
して繁用される経口投与剤、即ち、カプセル、錠
剤、散剤、顆粒剤等を製する場合には、ある特定
化合物を各種添加剤とを混合し製型する方法がと
られる。従つて、製剤化過程において物質の安定
性及び各種配合剤との配合変化(特に着色)がな
いことはその物質における製剤上の大きな特色と
なるものであるが、これ等製剤上の問題点を全て
の薬物が満足させうるとは限らない。しかるに本
発明の水化物は物理化学的に極めて安定であり、
例えば、等温吸着曲線測定の結果、本水化物は相
対臨界湿度がなく、高湿条件下で安定であるこ
と、又はメタノール溶液、室温、48時間等の苛酷
条件下での虐待試験において安定であること等で
確認された。又通常繁用される各種添加剤との配
合変化を調べた結果でも本発明水化物は、高温多
湿(40℃、75%)或は光照射(2500ルツクス)の
条件下、1ケ月保存で着色変化が起らないことが
確認された(表−2参照)。 従つて、本発明の水化物は、製剤技術上の観点
からして、極めて優れたものといえる。
[Table] Furthermore, the anti-ulcer effect of the compounds of the present invention is extremely noteworthy. That is, while conventional anti-ulcer agents are mainly local, the compound of the present invention exhibits central anti-ulcer action and is extremely useful as a new type of anti-ulcer agent. This is the shield method (British Journal of Pharmacology 13).
This was confirmed by a gastric juice secretion suppression test using a modified method (Vol., p. 54, 1958). More specifically, a solution of the compound of the present invention dissolved in physiological saline containing 30% propylene glycol was prepared and administered intravenously to rats. As a result, the so-called central gastric acid secretion effect induced by insulin administration is significantly suppressed, but the peripheral gastric acid secretion effect caused by carpronium chloride is suppressed at either 5 times or 10 times the dose. I didn't suppress it. Furthermore, as a result of an acute toxicity test (oral administration) of the compound of the present invention in mice, the LD 50 was 2 g/Kg or more, indicating that the compound of the present invention has extremely low toxicity. It is known that 3,4-dihydroxyphenethylamine (dopamine), which has a chemical structure somewhat similar to the compound of the present invention, has an antiulcer effect. However, dopamine cannot cross the blood-brain barrier (LS Gutsman, A. Zillman, eds., The Pharmacological Basis of Therapeutics, Vol. 4).
ed., p. 234, 1970), it is clear that its antiulcer action is not based on central action, and its mechanism of action is essentially different from that of the compounds of the present invention. Furthermore, it is well known that dopamine originally exhibits a strong effect on the circulatory system as a drug for treating ulcers (see Applied Pharmacology, Vol. 8 (6), pp. 835-846, 1974), and as an anti-ulcer agent. It is clear that this is not appropriate. Although the dosage of this drug varies depending on the administration method, a dosage of 50 to 450 mg/day is considered to be sufficient based on the results of animal experiments. The hydrate of the present invention has particular pharmaceutical characteristics. In other words, when administering regular pharmaceuticals,
It can be formulated into various dosage forms, such as capsules, tablets, powders, injections, and suppositories, using known formulation techniques, and is commonly used for oral administration as an anti-ulcer agent. When manufacturing pharmaceutical agents, ie, capsules, tablets, powders, granules, etc., a method is used in which a certain specific compound is mixed with various additives and molded. Therefore, during the formulation process, the stability of the substance and the absence of changes (especially coloring) with various compounding agents are major features of the formulation of the substance; Not all drugs can satisfy. However, the hydrate of the present invention is extremely stable physicochemically,
For example, as a result of isothermal adsorption curve measurements, the present hydrate has no relative critical humidity and is stable under high humidity conditions, or is stable in abuse tests under harsh conditions such as methanol solution, room temperature, 48 hours, etc. It was confirmed that. Furthermore, as a result of investigating changes in the composition with various commonly used additives, it was found that the hydrated product of the present invention did not become colored after being stored for one month under conditions of high temperature and humidity (40°C, 75%) or light irradiation (2500 lux). It was confirmed that no change occurred (see Table 2). Therefore, the hydrate of the present invention can be said to be extremely excellent from the viewpoint of formulation technology.

【表】 試料100mgと各賦形剤各々100mgとを乳バチでよ
く混合した後、温度40℃、湿度75%及び2500ルツ
クスに1ケ月保存した。 但し、ステアリン酸マグネシウム及びタルクの
場合の試料量は各々10mg。 本発明の水化物を製する直接の原料である無水
物及び/又は酸付加塩は、先述した如く本発明者
等によつて製されたものであり、その詳細は特願
昭53−103652号明細書に開示されているが、下記
に示される方法を適宜選択することにより製しう
る。 (式中、−COXはカルボン酸又はエステル、酸無
水物等のカルボン酸の反応性誘導体を、Yはハロ
ゲン原子を意味する。) 法を実施するには、式()のアミン化合物
と式()のカルボン酸又はカルボン酸の反応性
誘導体を直接もしくは適当な溶媒中、室温あるい
は所望により適度に加温して反応させればよい。
場合により、式()のカルボン酸を適当な溶媒
中、エステル又は酸無水物等のカルボン酸の反応
性誘導体に誘導し、式()のアミン化合物と反
応させる。あるいは又、式()のカルボン酸と
当量の式()のアミン化合物を混合し、ついで
加熱反応させることによつても有利に製しうる。 法を実施するには式()の化合物と式
()のアミン化合物を直接あるいは適当な溶媒
中、好ましくは適当な脱酸剤の存在下又は式
()のアミン化合物を過剰量使用して、所望の
温度に加温、反応させればよい。脱酸剤として
は、例えばアルカリ又はアルカリ土類金属等の炭
酸塩、水酸化物、酸化物等が繁用される。所望に
より、沃化ナトリウム等の沃素化合物を添加する
ことにより反応を有利に進行させうる。 以上の反応溶媒としては、反応に関与しない有
機溶媒、例えばハロゲン炭化水素類、エーテル
類、ベンゼン類、ピリジン類、ジメチルホルムア
ミドなどが繁用される。 以下、参考例および実施例を挙げて本発明を説
明する。 参考例 m−アミノベンズアミド6.8g、モノクロロ酢
酸メチルエステル5.5g、炭酸カルシウム10.0g
の混合物にジメチルホルムアミド30mlを注加し、
110〜120℃に2時間加熱撹拌する。無機塩の結晶
を濾去し、濾液を減圧濃縮し、残渣に水50mlを加
え撹拌すると結晶が析出する。結晶を濾取し、乾
燥し、メタノール−エーテルで再結晶して、N−
(3−カルバモイルフエニル)グリシンメチルエ
ステル5.7gを得る。無色針状晶。融点146〜147
℃。 元素分析 C10H12O3N2として 計算値 C 57.68、H 5.81、N 13.46 実験値 C 57.62、H 5.71、N 13.42 N−(3−カルバモイルフエニル)グリシンメ
チルエステル4.2gに1N−NaOH50mlを加え、室
温に30分撹拌する。反応液に濃塩酸4.2mlを加え、
析出した結晶を濾取し、水洗、乾燥し、メタノー
ルで再結晶してN−(3−カルバモイルフエニル)
グリシン3.3gを得る。無色プリズム晶。融点200
〜222℃(分解点)。 元素分析 C9H10O3N2として 計算値 C 55.66、H 5.19、N 14.43 実験値 C 55.89、H 5.30、N 14.61 3・4−ジメトキシフエネチルアミン3.6g、
N−(3−カルバモイルフエニル)グリシンメチ
ルエステル4.2gの混合物を窒素気流中、110〜
120℃で6時間熔融反応させる。冷後、反応混合
物をメタノールに溶解し、5%塩酸−メタノール
20mlを加えた後減圧濃縮する。残渣をメタノール
−エーテル混液で再結晶し、2−(3−カルバモ
イルフエニルアミン)−N−(3・4−ジメトキシ
フエネチル)アセトアミド塩酸塩5.0gを得る。
融点140〜155℃(分解点)。 元素分析 C19H24O4N3Clとして 計算値 C 57.94、H 6.14、N 10.67 実験値 C 57.64、H 6.08、N 10.77 参考例 2 N−(3−カルバモイルフエニル)グリシン5.0
gにテトラヒドロフラン65mlを加え、これに加熱
還流下トリクロロメチルクロロホルメート2.3ml
とテトラヒドロフラン10mlの混液を滴下し、さら
に3時間加熱還流する。反応液を減圧濃縮し、濃
縮液に冷時撹拌下石油エーテル30mlを滴下する。
析出した結晶を濾取し、洗浄し、乾燥してN−
(3−カルバモイルフエニル)グリシンN−カル
ボン酸無水物の無色結晶5.3gを得る。融点160〜
171℃(分解点)。 3・4−ジメトキシフエネチルアミン4.4g、
トリエチルアミン4.9g、ジメチルホルムアミド
30mlの混液に氷冷撹拌下前記N−(3−カルバモ
イルフエニル)グリシンN−カルボン酸無水物
5.3gを少量ずつ加えた後、反応液を徐々に室温
にもどし、1.5時間撹拌する。反応液に10%塩酸
25mlを加えて一度酸性とし、ついで炭酸ナトリウ
ム5.3gを加えてアルカリ性とし、減圧濃縮する。
残渣をクロロホルム70mlに溶解し、少量の水で洗
浄し、乾燥、濃縮してシリカゲル40gのカラムク
ロマトを行ない、クロロホルム−メタノール
(100:1)の流出部分より2−(3−カルバモイ
ルフエニルアミノ)−N−(3・4−ジメトキシフ
エネチル)アセトアミドを得る。塩酸塩としてメ
タノール−エーテル混液で再結晶し、3.1g、融
点140〜155℃(分解点)を得る。 参考例 3 2−クロロ−N−(3・4−ジメトキシフエネ
チル)アセトアミド25.8g、m−アミノベンズア
ミド13.6g、沃化ナトリウム15.0g、炭酸カルシ
ウム20.0gの混合物にジメチルホルムアミド100
mlを加え、60℃に4時間加熱撹拌する。その後、
反応液を減圧濃縮し、残渣をクロロホルム250ml
を用いて抽出する。クロロホルム溶液を水、5%
亜硫酸ナトリウム水溶液、飽和食塩水、水で洗浄
し、乾燥して溶媒を留去する。残渣を10%塩酸−
メタノール100mlに溶解し、再び減圧濃縮する。
残渣をメタノール−エーテル混液で再結晶し、2
−(3−カルバモイルフエニルアミノ)−N−
(3・4−ジメトキシフエネチル)アセトアミド
塩酸塩21.7gを得る。融点142〜155℃(分解点)。 実施例 1 2−(3−カルバモイルフエニルアミノ)−N−
(3・4−ジメトキシフエネチル)アセトアミド
塩酸塩5.0gに55〜60℃の温水500mlを加え、同温
度に加温しつつ撹拌溶解させる。一夜放置後、析
出した結晶を水洗した後、室温に10日間放置して
乾燥させ、2−(3−カルバモイルフエニルアミ
ノ)−N−(3・4−ジメトキシフエネチル)アセ
トアミド・三水晶の無色針状晶4.2gを得る。融
点53.5〜55.5℃。 元素分析 C19H29O7N3として 計算値 C 55.46、H 7.10、N 10.21 実験値 C 55.29、H 7.15、N 10.32 示差熱分析による結晶水定量 C19H23O4N3・3H2Oとして 計算値 H2O 13.1% 実験値 H2O 13.0% 赤外吸収スペクトル(KBr);3100〜3600cm-1
結晶水に基づく吸収を認めた。 実施例 2 2−(3−カルバモイルフエニルアミノ)−N−
(3・4−ジメトキシフエネチル)アセトアミ
ド・塩酸塩1gを水20mlに加えて懸濁させ、室温
にて強く撹拌すると、一度粘稠化し、次いで再び
結晶化する。30分間撹拌を続けた後、結晶を濾過
し、水洗し、10日間室温に放置して乾燥させ、2
−(3−カルバモイルフエニルアミノ)−N−
(3・4−ジメトキシフエネチル)アセトアミ
ド・三水晶の結晶性粉末0.88gを得る。融点51〜
56℃。 実施例 3 2−(3−カルバモイルフエニルアミノ)−N−
(3・4−ジメトキシフエネチル)アセトアミ
ド・塩酸塩3.0gに5%炭酸ナトリウム溶液20ml、
クロロホルム125mlを加えて室温に撹拌すると塩
酸塩の結晶が消失する。クロロホルム層を分取
し、水洗し、乾燥し、溶媒を減圧で留去する。残
渣をメタノール−エーテルで再結晶し、2−(3
−カルバモイルフエニルアミノ)−N−(3・4−
ジメトキシフエネチル)アセトアミド2.3gを得
る。融点133〜135℃。 元素分析 C19H23O4N3として 計算値 C 63.85、H 6.48、N 11.76 実験値 C 63.59、H 6.40、N 11.71 この2−(3−カルバモイルフエニルアミノ)−
N−(3・4−ジメトキシフエネチル)アセトア
ミド0.2gを乳鉢で粉末とし、これに水100mlを加
えて60〜65℃で30分間撹拌し、溶解させる。次い
で減圧下60℃で40mlまで濃縮し、室温に一夜放置
する。析出した無色針状晶を濾取し、水洗し、室
温に放置して乾燥させ、2−(3−カルバモイル
フエニルアミノ)−N−(3・4−ジメトキシフエ
ネチル)アセトアミド・三水晶0.13gを得る。融
点54〜57℃。
[Table] After 100 mg of the sample and 100 mg of each excipient were thoroughly mixed with a milk drum, the mixture was stored at a temperature of 40°C, humidity of 75%, and 2500 lux for one month. However, in the case of magnesium stearate and talc, the sample amount is 10 mg each. The anhydride and/or acid addition salt, which are the direct raw materials for producing the hydrate of the present invention, were produced by the present inventors as mentioned above, and the details are disclosed in Japanese Patent Application No. 53-103652. Although disclosed in the specification, it can be produced by appropriately selecting the methods shown below. (In the formula, -COX means a carboxylic acid or a reactive derivative of a carboxylic acid such as an ester, an acid anhydride, etc., and Y means a halogen atom.) To carry out the method, an amine compound of the formula ( ) or a reactive derivative of a carboxylic acid may be reacted directly or in an appropriate solvent at room temperature or with appropriate heating if desired.
Optionally, a carboxylic acid of formula () is derivatized into a reactive derivative of the carboxylic acid, such as an ester or anhydride, in a suitable solvent and reacted with an amine compound of formula (). Alternatively, it can be advantageously produced by mixing the carboxylic acid of formula () and an equivalent amount of the amine compound of formula () and then subjecting the mixture to a heating reaction. To carry out the process, a compound of formula () and an amine compound of formula () are used directly or in a suitable solvent, preferably in the presence of a suitable deoxidizing agent or using an excess amount of the amine compound of formula (). What is necessary is just to heat it to a desired temperature and make it react. As deoxidizing agents, carbonates, hydroxides, oxides, etc. of alkali or alkaline earth metals are often used. If desired, the reaction can be advantageously progressed by adding an iodine compound such as sodium iodide. As the above reaction solvent, organic solvents that do not participate in the reaction, such as halogen hydrocarbons, ethers, benzenes, pyridines, dimethylformamide, etc., are often used. The present invention will be described below with reference to Reference Examples and Examples. Reference example m-aminobenzamide 6.8g, monochloroacetic acid methyl ester 5.5g, calcium carbonate 10.0g
Pour 30ml of dimethylformamide into the mixture of
Heat and stir at 110-120°C for 2 hours. The inorganic salt crystals are filtered off, the filtrate is concentrated under reduced pressure, and 50 ml of water is added to the residue and stirred to precipitate crystals. The crystals were collected by filtration, dried, and recrystallized from methanol-ether to give N-
5.7 g of (3-carbamoylphenyl)glycine methyl ester are obtained. Colorless needles. Melting point 146-147
℃. Elemental analysis C 10 H 12 O 3 N 2 Calculated values C 57.68, H 5.81, N 13.46 Experimental values C 57.62, H 5.71, N 13.42 Add 50 ml of 1N-NaOH to 4.2 g of N-(3-carbamoyl phenyl) glycine methyl ester. Add and stir for 30 minutes at room temperature. Add 4.2ml of concentrated hydrochloric acid to the reaction solution,
The precipitated crystals were collected by filtration, washed with water, dried, and recrystallized with methanol to obtain N-(3-carbamoyl phenyl).
Obtain 3.3 g of glycine. Colorless prismatic crystal. melting point 200
~222℃ (decomposition point). Elemental analysis As C 9 H 10 O 3 N 2 Calculated values C 55.66, H 5.19, N 14.43 Experimental values C 55.89, H 5.30, N 14.61 3.4-dimethoxyphenethylamine 3.6 g,
A mixture of 4.2 g of N-(3-carbamoylphenyl)glycine methyl ester was heated at 110~
Melt reaction is performed at 120°C for 6 hours. After cooling, the reaction mixture was dissolved in methanol and diluted with 5% hydrochloric acid-methanol.
After adding 20ml, concentrate under reduced pressure. The residue was recrystallized from a methanol-ether mixture to obtain 5.0 g of 2-(3-carbamoylphenylamine)-N-(3,4-dimethoxyphenethyl)acetamide hydrochloride.
Melting point 140-155℃ (decomposition point). Elemental analysis C 19 H 24 O 4 N 3 Cl Calculated values C 57.94, H 6.14, N 10.67 Experimental values C 57.64, H 6.08, N 10.77 Reference example 2 N-(3-carbamoylphenyl)glycine 5.0
Add 65 ml of tetrahydrofuran to g, and add 2.3 ml of trichloromethyl chloroformate to this under heating reflux.
A mixture of 10 ml of tetrahydrofuran and 10 ml of tetrahydrofuran was added dropwise, and the mixture was further heated under reflux for 3 hours. The reaction solution was concentrated under reduced pressure, and 30 ml of petroleum ether was added dropwise to the concentrated solution while stirring while cold.
The precipitated crystals are collected by filtration, washed, dried and N-
5.3 g of colorless crystals of (3-carbamoylphenyl)glycine N-carboxylic anhydride are obtained. Melting point 160~
171℃ (decomposition point). 4.4 g of 3,4-dimethoxyphenethylamine,
4.9g triethylamine, dimethylformamide
Add the above N-(3-carbamoylphenyl)glycine N-carboxylic acid anhydride to 30 ml of the mixed solution while stirring on ice.
After adding 5.3 g little by little, the reaction solution was gradually warmed to room temperature and stirred for 1.5 hours. 10% hydrochloric acid in the reaction solution
Add 25 ml to make it acidic, then add 5.3 g of sodium carbonate to make it alkaline, and concentrate under reduced pressure.
The residue was dissolved in 70 ml of chloroform, washed with a small amount of water, dried, concentrated, and subjected to column chromatography on 40 g of silica gel. 2-(3-carbamoylphenylamino) was extracted from the chloroform-methanol (100:1) outflow. -N-(3,4-dimethoxyphenethyl)acetamide is obtained. The hydrochloride was recrystallized from a methanol-ether mixture to obtain 3.1 g, melting point 140-155°C (decomposition point). Reference Example 3 Add 100 g of dimethylformamide to a mixture of 25.8 g of 2-chloro-N-(3,4-dimethoxyphenethyl)acetamide, 13.6 g of m-aminobenzamide, 15.0 g of sodium iodide, and 20.0 g of calcium carbonate.
ml and heat and stir at 60°C for 4 hours. after that,
The reaction solution was concentrated under reduced pressure, and the residue was dissolved in 250 ml of chloroform.
Extract using. Chloroform solution in water, 5%
Wash with aqueous sodium sulfite solution, saturated brine, and water, dry, and evaporate the solvent. The residue was dissolved in 10% hydrochloric acid.
Dissolve in 100 ml of methanol and concentrate again under reduced pressure.
The residue was recrystallized from a methanol-ether mixture, and 2
-(3-carbamoylphenylamino)-N-
21.7 g of (3,4-dimethoxyphenethyl)acetamide hydrochloride are obtained. Melting point 142-155℃ (decomposition point). Example 1 2-(3-carbamoylphenylamino)-N-
Add 500 ml of warm water at 55 to 60°C to 5.0 g of (3,4-dimethoxyphenethyl)acetamide hydrochloride, and stir and dissolve while heating to the same temperature. After standing overnight, the precipitated crystals were washed with water and left at room temperature for 10 days to dry. 4.2 g of colorless needles are obtained. Melting point 53.5-55.5℃. Elemental analysis C 19 H 29 O 7 N 3 Calculated values C 55.46, H 7.10, N 10.21 Experimental values C 55.29, H 7.15, N 10.32 Quantification of water of crystallization by differential thermal analysis C 19 H 23 O 4 N 3・3H 2 O Calculated value H 2 O 13.1% Experimental value H 2 O 13.0% Infrared absorption spectrum (KBr); Absorption based on crystal water was observed at 3100 to 3600 cm -1 . Example 2 2-(3-carbamoylphenylamino)-N-
When 1 g of (3,4-dimethoxyphenethyl)acetamide hydrochloride is suspended in 20 ml of water and stirred vigorously at room temperature, it becomes viscous and then crystallizes again. After continued stirring for 30 minutes, the crystals were filtered, washed with water, left to dry at room temperature for 10 days, and
-(3-carbamoylphenylamino)-N-
0.88 g of crystalline powder of (3,4-dimethoxyphenethyl)acetamide triquartz was obtained. Melting point 51~
56℃. Example 3 2-(3-carbamoylphenylamino)-N-
(3,4-dimethoxyphenethyl)acetamide hydrochloride 3.0g and 20ml of 5% sodium carbonate solution,
When 125 ml of chloroform is added and stirred to room temperature, the hydrochloride crystals disappear. The chloroform layer is separated, washed with water, dried, and the solvent is distilled off under reduced pressure. The residue was recrystallized from methanol-ether to give 2-(3
-carbamoylphenylamino)-N-(3,4-
2.3 g of dimethoxyphenethyl)acetamide are obtained. Melting point 133-135℃. Elemental analysis C 19 H 23 O 4 N 3 Calculated values C 63.85, H 6.48, N 11.76 Experimental values C 63.59, H 6.40, N 11.71 This 2-(3-carbamoylphenylamino)-
Powder 0.2 g of N-(3,4-dimethoxyphenethyl)acetamide in a mortar, add 100 ml of water, and stir at 60 to 65°C for 30 minutes to dissolve. It is then concentrated to 40 ml under reduced pressure at 60°C and left overnight at room temperature. The precipitated colorless needle crystals were collected by filtration, washed with water, and left to dry at room temperature to give 2-(3-carbamoylphenylamino)-N-(3,4-dimethoxyphenethyl)acetamide triquartz 0.13 get g. Melting point 54-57℃.

Claims (1)

【特許請求の範囲】 1 式 で示される2−(3−カルバモイルフエニルアミ
ノ)−N−(3・4−ジメトキシフエネチル)アセ
トアミド・三水晶。
[Claims] 1 formula 2-(3-carbamoylphenylamino)-N-(3,4-dimethoxyphenethyl)acetamide tricrystal represented by:
JP9459779A 1978-08-25 1979-07-25 2- 3-carbamoylphenyamino -n- 3,4-dimethoxyphenethyl acetamide trihydrate Granted JPS5618947A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP9459779A JPS5618947A (en) 1979-07-25 1979-07-25 2- 3-carbamoylphenyamino -n- 3,4-dimethoxyphenethyl acetamide trihydrate
DK343479A DK149748C (en) 1978-08-25 1979-08-16 ANALOGY PROCEDURE FOR THE PREPARATION OF N-PHENETHYLACETAMIDE COMPOUNDS
CA000333939A CA1110628A (en) 1978-08-25 1979-08-16 N-phenethylacetamide compounds and process for preparation thereof
ES483484A ES483484A1 (en) 1978-08-25 1979-08-20 N-Phenethylacetamide compounds, processes for their preparation and therapeutic compositions containing them.
DE7979103116T DE2962567D1 (en) 1978-08-25 1979-08-23 N-phenethylacetamide compounds, processes for their preparation and therapeutic compositions containing them
EP79103116A EP0009608B1 (en) 1978-08-25 1979-08-23 N-phenethylacetamide compounds, processes for their preparation and therapeutic compositions containing them
AT0570879A AT367397B (en) 1978-08-25 1979-08-24 METHOD FOR PRODUCING NEW N-PHENAETHYL-GLYCINAMIDES
US06/070,085 US4297357A (en) 1978-08-25 1979-08-27 N-Phenethylacetamide compounds and process for preparation thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9459779A JPS5618947A (en) 1979-07-25 1979-07-25 2- 3-carbamoylphenyamino -n- 3,4-dimethoxyphenethyl acetamide trihydrate

Publications (2)

Publication Number Publication Date
JPS5618947A JPS5618947A (en) 1981-02-23
JPS631938B2 true JPS631938B2 (en) 1988-01-14

Family

ID=14114674

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Application Number Title Priority Date Filing Date
JP9459779A Granted JPS5618947A (en) 1978-08-25 1979-07-25 2- 3-carbamoylphenyamino -n- 3,4-dimethoxyphenethyl acetamide trihydrate

Country Status (1)

Country Link
JP (1) JPS5618947A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2532121B2 (en) * 1988-03-09 1996-09-11 第一製薬株式会社 Hydroxyphenethylamine derivative
JP2612417B2 (en) * 1993-04-28 1997-05-21 第一製薬株式会社 Gastrointestinal symptom improver
KR960701631A (en) * 1993-04-28 1996-03-28 스즈키 다다시 Digestive symptom ameliorant

Also Published As

Publication number Publication date
JPS5618947A (en) 1981-02-23

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