Abstract:
PURPOSE: Carbapenem derivatives with antibacterial activity against antibiotics resistant bacteria and a preparation method thereof are provided, which carbapenem derivatives are useful for treating the infection of hardly treating antibiotics resistant bacteria. CONSTITUTION: The carbapenem derivatives with antibacterial activity against antibiotics resistant bacteria represented by formula (1) or pharmaceutically acceptable salts are provided, wherein X is sulfur or nitrogen atom; Y is hydrogen, nitro or amine present in a certain site of phenyl group; M is hydrogen or ion counterpart forming the pharmaceutically acceptable salts; and the antibiotics resistant bacterium is methicillin resistant Staphylococcus Aureus(MRSA) or ofloxacin Staphylococcus Aures(ORSA). The method for preparing the carbapenem derivatives of formula (1) comprises the steps of: reacting a compound of formula (2) with a compound of formula (3) to carbapenem ester derivatives of formula (4); and removing carboxy protecting group, amine protecting group and hydroxy protecting group from the compound of formula (4), wherein R1 is hydrogen or hydroxy protecting group; R2 is carboxy protecting group; and R3 is amine protecting group.
Abstract:
PURPOSE: Provided is an intermediate, azetidinone compound which is useful in manufacturing beta-methylcarbapenem antibiotics. And its manufacturing method is provided. CONSTITUTION: The intermediate of carbapenem, azetidinone compound, is represented by the formula(1), wherein R is hydrogen or hydroxy protective group, R1 and R2 are individually C1-C15 alkyl, benzyl, represent 5-6 membered cyclic compound to which R1 and R2 are linked, or hetero cyclic group including at least one oxygen or sulfur atom; R3 is lower alkyl group or lower alkylester group; and R4 is benzene, halogen, lower alkyloxy group, or nitro group substituted benzene ring.
Abstract:
PURPOSE: A method for producing alkyl cis-4-amino-3- methoxy-1-piperidine carboxylate hydrochloride is provided, thereby the titled compound having high purity can be easily produced because the further purification steps are not required and the production is performed under the mild conditions. CONSTITUTION: The method for producing alkyl cis-4-amino-3- methoxy-1-piperidine carboxylate hydrochloride represented by formula (I) comprises the steps of: reacting alkyl trans-4-bromo-3- hydroxypiperidine-1-carboxylate of formula (III) with benzoyl isocyanate in organic solvents to produce alkyl trans-4-bromo-3- benzoylaminocarbonyloxy-1-piperidine carboxylate of formula (IV); adding base such as kalium tert-butoxide into the compound of formula (IV) to produce alkyl cis-1-benzoyl-2-oxo- hexahydro-oxazolo(5,4,c) pyridine-5-carboxylate of formula (V); reacting the compound of formula (V) with lithium hydroxide·H2O to produce alkyl cis-2-oxo-hexahydro-oxazolo(5,4-c) pyridine-5-carboxylate of formula (VI); reacting the compound of formula (VI) with triethylamine, di-tert-butoxy dicarbonate, and dimethylaminopyridine to produce cis-1-tert- butoxycarbonyl-5- ethoxycarbonyl-2-oxo- hexahydro- oxazolo(5,4-c) pyridine of formula (VII); reacting the compound of formula (VII) with cesium carbonate to produce alkyl cis-4-tert- butoxycarbonyl amino-3-hydroxy-1-piperidine carboxylate of formula (VIII); adding sodium hydroxide, dimethyl sulfate, and benzyltriethyl ammonium chloride into the compound of formula (VIII) to produce alkyl cis-4-tert-butoxycarbonylamino- 3-methoxy-1-piperidine carboxylate of formula (IX); and adding hydrogen chloride dissolved organic solvent into the compound of formula (IX) to produce alkyl cis-4-amino-3- methoxy-1-piperidine carboxylate hydrochloride of formula (I).
Abstract:
본 발명은 하기 구조식(I)의 1-베타메틸 카르바페넴 유도체 및 이의 약학적으로 허용가능한 염, 이의 제조방법 및 이를 유효성분으로 함유하는 항균제 조성물에 관한 것이다.
상기 식에서, R 1 은 수소, C 1-4 의 알킬, C 1-4 의 시클로알킬, 할로겐으로 치환된 C 1-4 의 알킬 또는 할로겐으로 치환된 C 1-4 의 시클로알킬이고, R 2 는 C 1-4 의 알킬, C 1-4 의 시클로알킬, 카바모일 또는 아세틸이고, n은 1 내지 3의 정수이다.
Abstract:
본 발명은 하기 일반식(I)의 페넴 유도체 및 그의 약제학적으로 허용되는 염, 제조방법 및 이를 활성 성분으로 함유하는 항생제 조성물에 관한 것으로, 일반식(I)의 화합물은 경구흡수도가 높고, 항균력이 우수하여 항생제로 유용하다: [화학식 1] (I) 상기식에서, R 1 , R 2 및 R 3 는 명세서 중에서 정의한 바와 같으며, 일반식 (1)의 화합물은 구조적으로 R 또는 S 이성질체이거나 이들의 혼합물이다.
Abstract:
본 발명은 다음 화학식으로 표시되는 퀴녹살린 유도체 또는 그의 염에 관한 것이다:
본 발명에 따르면, 신규한 퀴녹살린 유도체 및 이를 포함하는 분화 유도용 조성물은 신경전구세포 또는 줄기세포를 신경세포로 분화시킬 수 있다. 또한, 본 발명에 의하여 분화 유도된 신경전구세포는 특정세포(예컨대, 도파민 신경세포) 또는 올리고덴드로사이트등으로 고효율로 분화할 수 있고, 차후 난치성 신경계 질환(예컨대, 파킨슨 병이나 척수손상)과 같은 난치성 신경계질환 적용할 수 있으며 신약계발에 있어서 기초적인 자료를 제공한다.
Abstract:
PURPOSE: A novel hydrazinone-substituted pyrimidine derivative is provided to effectively suppress the activation of c-Met tyrosine kinase, thereby being used as a therapeutic agent for treating various hyperpoliferative disorders related to hyperproliferation and overgrowth of cells. CONSTITUTION: A hydrazinone-substituted pyrimidine derivative of chemical formula 1 or a pharmaceutically acceptable salt thereof is provided. A pharmaceutical composition for suppressing the activation of c-Met tyrosine kinase contains the pyrimidine derivative or a pharmaceutically acceptable salt or a solvate thereof as an active ingredient. A pharmaceutical composition for preventing or treating hyperproliferative disorders contains the pyrimidine derivative or a pharmaceutically acceptable salt or a solvate thereof as an active ingredient.