Abstract:
PURPOSE: A pyrazolopyrimidine derivative as a cyclin-dependent kinase inhibitor and a process for preparing the same are provided. The compound inhibits cyclin-dependent kinase(CDK) regulating cell division cycle and has low toxicity. Therefore, it can be useful for prevention and treatment of liver cancer, breast cancer, stomach cancer, colon cancer or rectal cancer caused by activation of CDK. CONSTITUTION: A pyrazolopyrimidine derivative is represented by the formula(1), wherein R1 comprises ortho, meta, or para substituent, and is bromo, chloro, fluoro, methoxy, hydrogen, nitro or amino; R2 is hydrogen or C3 or less of lower alkyl; R3 is hydrogen or C3 or less of lower alkyl, or hydroxyethyl; and n is an integer of 0 or 1. A method for preparing the pyrazolopyrimidine derivative represented by the formula(1) comprises the steps of: reacting 6-methylmercaptopyrazolopyrimidine of the formula(IV) with meta-chloroperbenzoic acid in the presence of an organic solvent such as chloroform or dichloromethane at -10 to 10 deg. C for 2 to 5 hours and at room temperature for 3 to 12 hours to prepare 6-methylsulfonylpyrazolopyrimidine of the formula(II); and nucleophilic substitution reaction of 6-methylsulfonylpyrazolopyrimidine of the formula(II) with hydroxyethylamine in the presence of a mixed organic solvent of isopropanol or n-butanol and dimethylsulfoxide or dimethylformamide at 70 to 100 deg. C for 1 to 6 hours.
Abstract:
PURPOSE: Provided are novel 1 β-Methylcarbapenem derivatives and their preparation process, which derivatives show stability to dihydropeptidase-I, and have antibacterial effects on both gram positive and gram negative bacteria. Thus, they are used as antibacterial agents. CONSTITUTION: Novel 1 β-Methylcarbapenem derivatives have substituted 5-(2-isoxazolyl ethenyl)pyrrolidine-3-thio or 5-(2-isothiazolyl ethenyl)pyrrolidine-3-thio group as a main functional group at 1-beta methylcarbapenem represented by the formula(1). A pharmaceutical composition for an antibacterial agent contains the 1 β-Methylcarbapenem derivatives, as active ingredients. In the formula(1), R is described as in the description and has cis- or trans stereomer, X is hydrogen, methoxycarbonyl, hydroxymethyl, methylaminomethyl, C1-C4 alkoxy or halogen atom, and Y is hydrogen or halogen atom.
Abstract:
The beta- or gamma-quinacridone is produced by (a) reacting a diethyl 1,4-dicyclohexanedione-2,5-dicarboxylate of formula (II) with an aniline in the presence of a solvent (toluene or xylene) having a low b.p. and a trifluoro acetic acid catalyst to obtain a diethyl 2,5-dianilino-3,6-dihydroterephthalate of formula (III), (b) reacting the cpd. of (III) in the presence of a xylene solvent at 310-320 deg.C for 1 hr in the high pressure reactor to obtain a beta- 6,13- dihydroquinacridone of formula (IV), and (c) reacting a lower alcohol (methanol or ethanol), a sodium hydroxide soln. and a meta-sodium nitrobenzene sulfonate with the cpd. of (IV).
Abstract:
PURPOSE: An aminostyrylbenzofuran compound and a pharmaceutical composition containing the same are provided to prevent and treat neurodegenerative diseases caused by beta-amyloid fibrillation. CONSTITUTION: A compound is selected among an aminostyrylbenzofuran compound of chemical formula 1 and a pharmaceutically acceptable salt, an isomer, a hydrate, and a solvate thereof. A pharmaceutical composition which suppresses beta-fibrillation contains the compound as an active ingredient. A pharmaceutical composition for preventing or treating neurodegenerative diseases contains the compound as an active ingredient. The neurodegenerative diseases are senile dementia, stroke, Parkinson's disease, Huntington's disease, or bovine spongiform encephalopathy.
Abstract:
본 발명은 단백질 키나아제 저해활성을 갖는 1,6-치환된 인돌 화합물, 이의 약학적으로 허용 가능한 염, 그리고 이 화합물을 유효성분으로 함유하는 비정상 세포 성장으로 유발되는 종양질환의 예방 및 치료용 약학적 조성물에 관한 것이다. 본 발명의 신규 인돌 화합물은 성장 인자 신호 전달에 관여하는 다양한 단백질 키나아제에 대하여 우수한 억제 효과를 나타내므로, 이들 단백질 키나아제에 의해 유발되는 종양 질환의 예방 및 치료제로서 유용하다. 인돌, 단백질, 키나아제, 억제제, 비정상 세포 성장 질환
Abstract:
본 발명은 베타-아밀로이드 피브릴( beta -amyloid fibril)에 우수한 결합 친화도를 나타내어 치매를 비롯한 퇴행성 뇌질환의 조기 진단과, 이들 질환의 예방 및 치료에 유용한 하기 화학식 1로 표시되는 이소인돌론(isoindolone) 화합물, 이의 제조 방법 및 이를 포함하는 약학적 조성물에 관한 것이다. [화학식 1]
식 중에서, A는 C=O 또는 CH 2 기이고, R 1 은 H, OH, 불소, 염소, 브롬 및 요오드 중에서 선택되는 할로겐 원자, C 1 ∼C 8 알킬기, C 1 ∼C 8 알콕시기, 토실옥시-C 1 ∼C 8 알콕시기, 메실옥시-C 1 ∼C 8 알콕시기, 노실옥시-C 1 ∼C 8 알콕시기, 불소, 염소, 브롬 및 요오드 중에서 선택되는 할로겐 원자로 치환된 C 1 ∼C 8 알콕시기, 또는 C 1 ∼C 8 알킬아미노기이며, R 2 는 H, 불소, 염소, 브롬 및 요오드 중에서 선택되는 할로겐 원자 또는 C 1 ∼C 8 알킬기이며, R 3 및 R 4 는 각각 H, C 1 ∼C 8 알콕시기 또는 C 1 ∼C 8 알킬아미노기이다.