Abstract:
A 7-membered cyclic compound having diexomethylene groups and a preparation method thereof are provided, which compound is useful as an intermediate for preparing other cyclic compound through Diels-Alder reaction, and has improved activity. The 7-membered cyclic compound having diexomethylene groups represented by formula (1) is provided, wherein R1 is C1-C6 alkyl; R2 and R3 are independently hydrogen; or R1, R2 and R3 together form 5- to 10-membered aliphatic or aromatic rings. The method for preparing the 7-membered cyclic compound having diexomethylene groups represented by formula (1) comprises cyclization of trimethylsilanylmethyl-alenol derivatives in the presence of Lewis acid in solvent at -90 deg. C to the room temperature, wherein the solvent is selected from diethylether, tetrahydrofuran, dichloromethane and chloroform; and the Lewis acid is trimethylsillyl trifluoromethanesulfonate(TMSOTf).
Abstract:
PURPOSE: Azabicyclic compounds having an oxime moiety and a preparation method thereof are provided, which can be useful for treatment of cerebral nervous diseases caused by choline neurotransmission disorders including Alzheimer's disease. CONSTITUTION: An azabicyclic compounds having an oxime moiety represented by the formula(I) and pharmaceutically acceptable salts thereof are provided, wherein n is 1 or 2; m is 0 or 1; and R is at least one substituent selected from the group consisting of hydrogen, F, Cl, methoxy, OH, NH2, NO2, 3, 4-dimethoxy, 2, 4-dimethoxy, cyano, C1-C6 alkyl, 1, 2 or 3 fluorine atom substituted C1-C6 alkyl, 4-methoxybenzyloxy, t-butoxycarbonyl, C2-C6 alkenyl, 1, 2 or 3 fluorine atom substituted C2-C6 alkynyl, C3-C7 cycloalkyl and aromatic atom group, in which the aromatic atom group is selected from phenyl, 2- or 3-thienyl, 2- or 3-puridyl, 2- or 3-pyrrolyl; and the substituent of the aromatic atom group is selected from the group consisting of Cl, Br, F, trifluoromethyl, NH2, NO2 and C1-C4 straight or branched chain alkyl.
Abstract:
PURPOSE: Indol derivatives and a preparation process thereof are provided, thereby rapidly preparing indol derivatives under mild conditions in higher yield. CONSTITUTION: Indol derivatives are represented by the formula 6, wherein R is H, or halogen selected from Cl, F, Br and I; and Y is -Ts(tosyl), -Ms(mesyl) or -Ac(acetyl). A process for preparing the indol derivatives of the formula 6 comprises the steps of: reacting a compound of the formula 1 with a compound of the formula 2 in the presence of indium metal and acid to simultaneously perform allylation of aldehyde and reduction of nitro group, thereby preparing a compound of the formula 3; protecting amine group of the compound of the formula 3 to prepare a compound of the formula 4; oxidizing secondary alcohol of the compound of the formula 4 to prepare a compound of the formula 5; and cyclization of the compound of the formula 5 in the presence of organic base, wherein the oxidation of secondary alcohol uses pyridinium chlorochromate(PCC) or pyridinium dichromate(PDC) or Swern's oxidation or Dess-Martin periodinane oxidation; and the organic base is diisopropylethylamine, DBU (1,8-diazabicyclo£5.4.0|undec-7-ene), DBN (1,5-diazabicyclo£4.3.0|non-5-ene), triethylamine or pyridine.
Abstract:
PURPOSE: An alkenyl azabicyclic compound and a preparation method thereof are provided, which can be useful for treatment of cerebral nervous diseases caused by choline neurotransmission disorders. CONSTITUTION: An alkenyl azabicyclic compound represented by the formula(I) and pharmaceutically acceptable salts thereof are provided, wherein n is 1 or 2; and R is selected from the group consisting of hydrogen, F, Cl, methoxy, OH, NH2, NO2, 3,4-dimethoxy, 2,4-dimethoxy, cyano, C1-C6 alkyl, 1, 2 or 3 fluorine substituted C1-C6 alkyl, 4-methoxybenzyloxy, t-butoxycarbonyl, C2-C6 alkenyl, 1, 2 or 3 fluorine substituted C2-C6 alkynyl and C3-C7 cyloalkyl. A method for preparing the alkenyl azabicyclic compound of the formula(I) comprises a compound of the formula(II) with a compound of the formula(III) or formula(IV), wherein R1, R2 and R3 are independently C1-C6 alkyl, aryl or arylalkyl.
Abstract:
PURPOSE: Methylidene piperidinyl oxazolidinone derivatives and a preparation method thereof are provided, which compounds have improved antimicrobial activity, so that they can be useful for treatment of infection of pathogenic bacteria having resistance to conventional antibiotics. CONSTITUTION: Methylidene piperidinyl oxazolidinone derivatives represented by the formula(1) or pharmaceutically acceptable salts thereof are provided, wherein X is oxygen or sulfur atom; R1 and R2 are independently hydrogen, cyano, alkyl, halogen, acetoxy, ethoxycarbonyl, hydroxy, hydroxyamino, methoxyimino, aminoethyl, or one or more hetero atom selected from oxygen, nitrogen and sulfur; and n is 1 or 2. The method for preparing the methylidene piperidinyl oxazolidinone derivatives of the formula(1) comprises reacting a compound of the formula(2) with a compound of the formula(3) in the presence of catalyst with or without organic solvent.
Abstract translation:目的:提供亚甲基哌啶基恶唑烷酮衍生物及其制备方法,该化合物具有改善的抗微生物活性,因此它们可用于治疗对常规抗生素具有抗性的病原菌的感染。 构成:提供由式(1)表示的亚甲基哌啶恶唑烷酮衍生物或其药学上可接受的盐,其中X是氧或硫原子; R 1和R 2独立地是氢,氰基,烷基,卤素,乙酰氧基,乙氧基羰基,羟基,羟基氨基,甲氧基亚氨基,氨基乙基或一个或多个选自氧,氮和硫的杂原子; 并且n为1或2.制备式(1)的亚甲基哌啶基恶唑烷酮衍生物的方法包括使式(2)化合物与式(3)化合物在催化剂存在或不与有机物 溶剂。
Abstract:
PURPOSE: Azabicyclic compounds having an oxime moiety and a preparation method thereof are provided, which can be useful for treatment of cerebral nervous diseases caused by choline neurotransmission disorders including Alzheimer's disease. CONSTITUTION: An azabicyclic compounds having an oxime moiety represented by the formula(I) and pharmaceutically acceptable salts thereof are provided, wherein n is 1 or 2; m is 0 or 1; and R is at least one substituent selected from the group consisting of hydrogen, F, Cl, methoxy, OH, NH2, NO2, 3, 4-dimethoxy, 2, 4-dimethoxy, cyano, C1-C6 alkyl, 1, 2 or 3 fluorine atom substituted C1-C6 alkyl, 4-methoxybenzyloxy, t-butoxycarbonyl, C2-C6 alkenyl, 1, 2 or 3 fluorine atom substituted C2-C6 alkynyl, C3-C7 cycloalkyl and aromatic atom group, in which the aromatic atom group is selected from phenyl, 2- or 3-thienyl, 2- or 3-puridyl, 2- or 3-pyrrolyl; and the substituent of the aromatic atom group is selected from the group consisting of Cl, Br, F, trifluoromethyl, NH2, NO2 and C1-C4 straight or branched chain alkyl.
Abstract:
본 발명은 인듐 금속 및 산을 이용하여 알데히드(-CHO)의 알릴화 및 니트로기(-NO 2 )의 환원 반응을 동시에 행하는 방법에 관한 것이며, 보다 구체적으로는 화학식 1의 화합물을 인듐 금속 및 산의 존재하에 화학식 2의 화합물과 반응시켜 알데히드의 알릴화 반응과 니트로기(-NO 2 )의 아민기(-NH 2 )로의 환원 반응을 동시에 행하여 화학식 3의 화합물을 제조하는 방법에 관한 것이다(반응식 1). 화학식 1
화학식 2
화학식 3
반응식 1
상기 화학식 1 내지 3 및 반응식 1 중에서, R은 C 6 -C 10 방향족 고리를 말하며; R 1 -R 3 은 서로 독립적으로 수소, C 1 -C 6 알킬기, 페닐기 또는 C 1 -C 3 알콕시 카르보닐기를 말하며; k는 0 - 4이며, 각 치환체 Y는 할로겐, 할로겐에 의해 치환된 또는 비치환된 C 1 -C 3 알킬기, 또는 할로겐에 의해 치환된 또는 비치환된 C 1 -C 3 알콕시기이거나, 두 개의 Y가 조합하여 5원 또는 6원 고리 또는 헤테로고리를 형성할 수 있으며; m은 1 - 3이며, n은 1 - 3이며; X은 Cl, Br, I로 구성되는 군에서 선택되는 할로겐 원소를 말한다. 상기 제조방법은 종래의 방법에 비해 알데히드의 알릴화 반응과 니트로기의 환원 반응을 동시에 수행할 수 있으며, 반응 수율이 높고, 반응이 상온에서 짧은 시간내에 진행하고, 수용액 상에서 반응이 손쉽게 진행되므로 환경친화적인 산업공정이다는 장점이 있다.