Abstract:
본 발명은 위장계통을 자극하는 생리활성을 가지는 다음 일반식(Ⅰ)의 N-(4-피페리딘)벤즈아미드 및 그 약제학적으로 허용되는 부가염의 새로운 제조방법에 관한 것이다. 보다 바람직하게는 다음 일반식(Ⅰ)에서 L이 3-(4-플루오로펜옥시)프로필이고, R이 메틸인 위장 연동운동 촉진제로 사용되는 시사프라이드의 새로운 제조방법에 관한 것이다. 또한 본 발명은 일반식(Ⅰ)의 N-(4-피페리딘)벤즈아미드 제조에 유용한 구조식(Ⅲ)의 새로운“활성티오에스테르”및 그 제조방법에 관한 것이다. 즉, 본 발명은 구조식(Ⅶ)의 카르복실산 유도체와 일반식(Ⅵ)의 알킬클로로포르메이트를 반응시켜 일반식(Ⅴ)의 중간체를 생성시킨 후 일반식(Ⅴ)의 중간체와 구조식(Ⅳ)의 2-머캅토벤즈이미다졸을 반응시켜 구조식(Ⅲ)의 새로운“활성티오에스테르”를 제조한 다음, 일반식(Ⅱ)의 시스-피페리딘아민 유도체와 반응시켜 목적화합물인 일반식(Ⅰ)의 시스프라이드를 포함하는 벤즈아미드 유도체를 제조하는 방법에 관한 것이다.
상기 식에서 L은 아르알킬 또는 아릴옥시알킬인데, 이때 알킬부분은 C 1 -C 6 의 알킬이고, 아릴부분은 할로, C 1 -C 6 의 저급알킬 또는C 1 -C 6 의 저급알콕시로부터 독립적으로 선택된 3개까지의 치환체로 임의치환된 것이고; R은 C 1 -C 6 의 저급알킬이며; R 1 은 에틸, 이소프로필 또는 이소부틸이다.
Abstract:
PURPOSE: An N-(4-piperidine) benzamide is prepared by the reaction of thioester and is-piperidine amine derivatives which has gastroenteric irritative physiological activities. CONSTITUTION: Carboxylic derivatives and alkyl chloroformate are reacted to give an intermediate(formula 5), and reacted with 2-mercaptobenzimidazole to give the novel active thioester(formula 3). Active thioester and is-piperidine amine derivatives(formula 2) are reacted to give benzamide derivatives(formula 1; R is C1-C6 lower alkyl; L is an alkyl or aryloxyalkyl). Thus, 376 mg of triethyl amine and 280 mg of ethyl chloroformate are drop in 500 mg of 4-amino-5-chloro-2-methoxybenzoic acid and reacted at 0-10°C for 1.5 hours, adding 396 mg of 2-mercaptobenzimidazole at room temperature for 6 hour. A mixed solution of 630 mg of is-4-amino-3-method-1-£3-(4-fluorophenoxy) propyl|piperidine and 1 ml of N,N-dimethyl form amide is drop at room temperature for 5 hours in the reactant to give 963 mg of is-2-method-4-amino-5-chloro-N-£1-£3-(4- fluorophenoxy)propyl|-3-method-4-piperidinyl|benzamide1 hydrate.
Abstract:
PURPOSE: A method for preparing N-(4-piperidine)benzamide is provided in which high purity of compound can be obtained in high yield and a side reaction product is easily separated from an object product. CONSTITUTION: A benzamide derivatives of formula I is obtained by reacting an active ester compound of formula II and a piperidine amine compound of formula III. The active ester compound of formula II is obtained by reacting a compound of formula VI and a compound of formula IV and the piperidine amine compound of formula III is obtained by using a ketone compound of formula VII. The compound of formula VI is obtained by reacting a carboxylic acid compound of formula II` and an ethylchloroformate or an isobytylchloroformate of formula V.
Abstract:
PURPOSE: An N-(4-piperidine)benzamide has a physiological activity for the stimulating gastrointestinal system and a pharmaceutically accepted additional salt thereof. CONSTITUTION: An N-(4-piperidine)benzamide represented by the formula (1) having a physiological activity for the stimulating gastrointestinal system and a pharmaceutically accepted additional salt thereof: wherein L is aralkyl or aryloxyalkyl, wherein the alkyl moiety is C1-C6 alkyl and the aryl moieties are up to three substituents each independently selected from the group consisting of halo, C1-C6 low alkyl and C1-C6 low alkoxy; and R is C1-C6 low alkyl.