Abstract:
신규한 [1, 2, 4]트리아졸로[4, 3-a]퀴녹살린 유도체, 이들의 제조방법 및 이를 유효성분으로 함유하는 암 및 자가면역질환을 포함한 BET(Bromodomain Extra-terminal) 단백질 관련 질환의 예방 또는 치료용 약학적 조성물이 제공된다.
Abstract:
본 발명은 하기 화학식 1의 화합물, 하기 화학식 3의 화합물, 하기 [212] 화합물, [224] 화합물, 또는 [228] 화합물; 이의 약제학적으로 허용 가능한 염; 이의 입체 이성질체; 이의 수화물; 또는 이의 용매화물, 및 이를 포함하는 약제학적 조성물을 제공한다. 상기 약제학적 조성물은 우수한 항바이러스 효능을 가지므로 SARS-CoV-2와 같은 바이러스 감염 질환의 예방 또는 치료 효과를 가지며, IL-5 발현 억제 효과를 보이므로 호흡기 질환 또는 알레르기성 질환의 예방 또는 치료 효과를 가진다.
Abstract:
PURPOSE: An improved method for preparing candesartan cilexetil is provided to simplify entire process under a mild condition. CONSTITUTION: A method for preparing candesartan cilexetil of chemical formula 1 comprises: a step of dissolving a compound of chemical formula 2 in a dichloromethane solution; a step of adding a mixture solution of alcohol and acetyl chloride to the dichloromethane solution; a step of deprotecting to remove triphenyl methane protection groups and obtain a compound of chemical formula 1; a step of adding ethyl acetate and n-hexane and precipitating the compound of chemical formula 1.
Abstract:
PURPOSE: A process for preparing rebamipide is provided, thereby simplifying the preparing process of rebamipide and improving the preparation yield of rebamipide. CONSTITUTION: A process for preparing rebamipide of the formula(1) comprises the steps of: reacting 4-(bromomethyl)-1,2-dihydro-2-quinolinone of formula(2) with diethyl 2-£(4-chlorobenzoyl)amino|malonate of formula(3) to prepare a compound of formula(4); and reacting the compound of formula(4) under basic conditions, wherein R is alkyl having the carbon number of 1 to 6, wherein the diethyl 2-£(4-chlorobenzoyl)amino|malonate of formula(3) is prepared by reacting diethyl 2-aminomalonate hydrochloride with 4-chlorobenzoyl derivative of formula(6); and R is alkyl having the carbon number of 1 to 6 and X is OH or halogen atom.
Abstract:
본 발명은 AIDS(Acquired Immunodeficiency Syndrome)를 유발하는 HIV(Human Immunodeficiency Virus)의 증식에 필수효소인 역전사효소를 저해하는 작용이 우수한 신규 퀴놀론 카르복실산 유도체에 관한 것으로서, 더욱 상세하기로는 다음 화학식 1로 표시되는 퀴놀론 카르복실산 유도체, 그의 약제학적으로 허용가능한 염 및 그의 제조방법에 관한 것이다.
상기 화학식에서 X는 CH 또는 질소원자이고, A 는 3-아미노피롤리딘, C 1-3 의 저급알킬기가 1-3개 치환 또는 비치환된 피페라진이고, B 는 1-나프틸 또는 2-나프틸기이다.
Abstract:
PURPOSE: A method for preparing telmisartan is provided to easily remove inorganic salt using a reaction solvent and to simplify reaction process without a separate process. CONSTITUTION: A method for preparing telmisartan of chemical formula 1 comprises: a step of condensing a compound of chemical formula 2 and a compound of chemical formula 3 using dimethyl sulfoxide and isopropanol to prepare a compound of chemical formula 4; and a step of hydrolyzing the compound of chemical formula 4 in a mixture solvent of methanol and purified water.
Abstract:
PURPOSE: A process for preparing 2-cyano-3-hydroxy-N-[(4-trifluoromethyl)phenyl]but-2-enamide is provided to easily remove by-products generated during the manufacturing process of final products. CONSTITUTION: A process for preparing 2-cyano-3-hydroxy-N-[(4-trifluoromethyl)phenyl]but-2-enamide of chemical formula 1 from a compound of chemical formula 5 comprises the steps of: activating a compound of chemical formula 2 to an esterified compound using a carbodiimide compound; and reacting the resultant with a compound of chemical formula 4 to prepare a compound of chemical formula 5. The carbodiimide compound is selected from 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride, 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide, 1,3-diisopropylcarbodiimide or 1,3-dicyclohexylcarbodiimide.
Abstract:
A process for preparing an intermediate of donepezil having dementia-treating effects is provided to improve preparation yield and convenience of mass production of the intermediate by replacing the base which is difficult to be used industrially. An intermediate of donepezil, 2-[(E)-1-(1-benzyl-4-piperidyl)methylidene]-5,6-dimethoxy-1-indanone represented by the formula(1) is prepared by reacting 1-indanone compound represented by the formula(2) with aldehyde compound represented by the formula(3) by using a base selected from sodium methoxide(MeONa), sodium ethoxide(EtONa), potassium t-butoxide, sodium hydride, sodium hydroxide, potassium hydroxide and sodium amide in a reaction solvent selected from methanol, ethanol, isopropanol, t-butanol, tetrahydrofuran, 1,4-dioxane, diisopropyl ether, dimethylform amide, dimethylsulfoxide and nitromethane.