Abstract:
본 발명은 다음의 일반식 (I)로 표시되는 신규한 피리도[2,3-d]피리미딘 카르보알데히드 옥심계 화합물 또는 약학적으로 허용되는 이들의 염, 이들의 제조방법 및 이들의 선택적 포스포디에스테라아제 IV 효소 활성 억제 효과에 의한 약리학적 적용에 관한 것이다.
Abstract:
PURPOSE: Provided is a novel pyridopyrimidine derivative inhibiting phosphodiesterase IV activity, and TNF generation and its side effects. Also, provided are its manufacturing method and a pharmaceutical composition containing it. CONSTITUTION: The novel pyridopyrimidine derivative is represented by the formula(1), wherein R1 is aryl, substituted aryl(wherein, a substitution group can be C1-3 lower alkyl group, C1-3 lower alkoxy group, halogen, aryl, or substituted aryl), aryl oxy, aryl amino, aryl substituted lower alkyl, pyridine, alkyl substituted pyridine, halogen substituted pyridine, C1-3 lower alkyl ester, substituted hetero cycle, hetero cycle oxy, hetero cycle, or amino hetero cycle lower alkyl; R2 hydrogen, C3-7 lower alkyl oxy, phenyl, benzyl, or substituted phenyl(wherein, a substitution group can be cyano, halogen, carboxy alkyl, methyl, trihalogenated methyl, or alkyl oxy, and substitution site can be ortho-, para-, or meta- site), alkyl oxy, C3-7 lower alkyl oxy ethyl, benzyl oxy, benzyl oxy ethyl, phenyl oxy ethyl, carboxy alkyl or cyano group; and R4 is hydrogen or methyl group, provided that R2 and R3 are not the same.
Abstract:
PURPOSE: Provided is a method for preparing novel pyrazolpyrimidine derivative represented by the formula(1) and its pharmaceutically acceptable salts or hydrates. A pharmaceutical composition containing it is used as a therapeutic agent for impotency by inhibition of phosphodiesterase V. CONSTITUTION: The novel pyrazolpyrimidine derivative represented by the formula(1), wherein R1 and R2 are independently C1-C6 alkyl or C3-C6 cycloalkyl; R3 is substituted or unsubstituted C1-C6 alkyl, C3-C6 cycloalkyl or C3-C6 alkenyl; and X is O or NR4 wherein R4 is hydrogen, OH or C1-C6 alkyl, C3-C6 cycloalkyl or C3-C6 alkenyl substituted or unsubstituted by alkoxy group. It is manufactured by the steps of: converting pyrazolopyrimidinone of the formula(2) into pyrazolopyrimidinethione of the formula(3) by thione reaction; chlorosulfonating the compound of the formula(3) into chlorosulfone compound of the formula(4) and letting the compound of formula(4) react with secondary amine to make the final compound of the formula(1).
Abstract:
PURPOSE: Provided is a novel pyridopyrimidine derivative inhibiting phosphodiesterase IV activity, and TNF generation and its side effects. Also, provided are its manufacturing method and a pharmaceutical composition containing it. CONSTITUTION: The novel pyridopyrimidine derivative is represented by the formula(1), wherein R1 is aryl, substituted aryl(wherein, a substitution group can be C1-3 lower alkyl group, C1-3 lower alkoxy group, halogen, aryl, or substituted aryl), aryl oxy, aryl amino, aryl substituted lower alkyl, pyridine, alkyl substituted pyridine, halogen substituted pyridine, C1-3 lower alkyl ester, substituted hetero cycle, hetero cycle oxy, hetero cycle, or amino hetero cycle lower alkyl; R2 hydrogen, C3-7 lower alkyl oxy, phenyl, benzyl, or substituted phenyl(wherein, a substitution group can be cyano, halogen, carboxy alkyl, methyl, trihalogenated methyl, or alkyl oxy, and substitution site can be ortho-, para-, or meta- site), alkyl oxy, C3-7 lower alkyl oxy ethyl, benzyl oxy, benzyl oxy ethyl, phenyl oxy ethyl, carboxy alkyl or cyano group; and R4 is hydrogen or methyl group, provided that R2 and R3 are not the same.
Abstract:
PURPOSE: Provided is a novel oxazolidinone derivative which includes a thiophene ring and has antibacterial effects on gram positive bacterial. Also, its pharmaceutically acceptable salt and hydrate are provided. CONSTITUTION: A novel oxazolidinone derivative or its pharmaceutically acceptable salt and hydrates includes a thiophene ring and is represented by the formula (1). in the formula, R1 is a phenyl group or halogen, a phenyl group of which an alkoxy group is substituted; R2 is a saturated alkyl group of C1-4 or an alkyl group of C1-3 of which one hydrogen is substituted with a phenyl group, a cycloalkyl group of C3-8, a benzyl group of which an aryl group is substituted with an alkyl group of C1-3; and R3 is hydrogen or fluorine. The compound of the formula (1) is prepared by reacting a compound of the formula (2) with a compound of formula (3).
Abstract:
PURPOSE: A pyrazolopyridine substituted cephalosporin compound is provided, which have the wide antimicrobial activity for gram positive and gram negative bacteria. And a producing method thereof is also provided. CONSTITUTION: The pyrazolopyridine substituted cephalosporin compound is represented by formula (1), in which R1 is hydrogen, C1 to C3 alkyl, C1 to C3 alkyl containing hydroxy, C1 to C3 alkyl containing amine; and R2 is hydrogen, amino, amino protected by amine protecting groups, carboxy or its inorganic salts, carbarmoyl, C1 to C3 alkyl substituted carbarmoyl, C1 to C3 alkyl containing hydroxy, and C1 to C3 alkyl esterified carboxy. The method for producing the pyrazolopyridine substituted cephalosporin compounds comprises the steps of: reacting the compounds of formula (2) and (3); and deprotecting R3 and R4, in which R3 is amine protecting groups, R4 is carboxylic acid protecting groups; and Y is halogen or acetoxy.
Abstract:
PURPOSE: Provided is a method for producing 2-penacylidene- 3,5- alkyl substituted-1,3- thiazolidine-4-on easily under mild condition. CONSTITUTION: The 2-penacylidene- 3,5- alkyl substituted-1,3- thiazolidine-4-on represented by the formula (1) is produced by reacting thiopenacyl keten S,N-acetal represented by the formula (2) with alpha-haloacylhalogen represented by the formula (3), in which R1 is C1 to C6 alkyl, C7 to C8 arylalkyl, C7 to C8 arylalkyl having an aromatic ring substituted by substituents selected from the group consisting of C1 to C3 alkyl, C1 to C3 alkoxy and halogen, and C5 to C7 cycloalkyl; R2 is hydrogen or C1 to C3 lower alkyl; R3 is C1 to C6 alkyl, benzyl, benzyl having an aromatic rings substituted by substituents selected from the group consisting of C1 to C3 alkyl, C1 to C3 alkoxy, halogen and dialkylamino; and X is fluoride, chloride, bromide or iodide.
Abstract:
본 발명은 양자성 용매하에 킬레이트화제를 사용하여 시소마이신을 킬레이트화하고, 킬레이트화된 시소마이신의 3,2',6' 위치의 아미노기를 아실화제로서 아실화반응에 의해 보호하고, 암모니아수로 킬레이트화된 금속을 이탈시킨 다음, 얻어진 3,2,'6'-트리치환 시소마이신을 비양자성 유기용매에서 에틸화제와 반응시켜 1 위치의 아미노기만을 선택적으로 에틸화시키고, 이어서 탈보호하는 것으로 이루어진 다음 구조식(I)의 1-N-에틸시소마이신 및 그의 약리학적 허용염의 제조방법을 제시한다:
상기 1-N-에틸시소마이신은 인체의 감염증을 치료하는데 사용되는 아미노글리코시드계의 항생제이며, 본 발명의 제조방법에 따라 고수율로 얻어진다.