Abstract:
PURPOSE: Benzoazepine derivatives and a preparation process thereof using indium are provided, thereby rapidly and easily preparing the benzoazepine derivatives using an appropriate amount of indium powder. CONSTITUTION: Benzoazepine derivatives are represented by the formula IV, wherein X is H, F, Cl, Br, I, alkyl or alkoxy. The benzoazepine derivatives represented by the formula III are also provided, wherein R is methyl, ethyl or hydrogen; and X is H, F, Cl, Br, I, alkyl or alkoxy. A process for preparing benzoazepine derivatives of the formula IV comprises the steps of: (1) stirring 2-nitro benzaldehyde derivatives of the formula I and methyl 2-(bromomethyl) acrylate or ethyl 2-(bromomethyl) acrylate in water or aqueous organic solvent, together with indium coil or indium thin layer and acid to prepare a compound of the formula III; and (2) reacting the compound of the formula III with base in an organic solvent, wherein the aqueous organic solvent in the step (1) is tetrahydrofuran solution, acetonitrile solution, N,N-dimethylformamide solution, methylalcohol solution or ethylalcohol solution; the base in the step (2) is sodium hydride, potassium butoxide, sodium bicarbonate, sodium carbonate, potassium carbonate or cesium carbonate; and the organic solvent in the step (2) is tetrahydrofuran, N,N-dimethylformamide, methylsulfoxide, dimethylsulfoxide or dichloromethane.
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: Carbonyl compounds and a preparation process thereof using carbonyl reductase isolated from Kluyveromyces marxianus are provided. The carbonyl compounds are useful as intermediates for preparing beta-lactam family antimicrobial agents. CONSTITUTION: Carbonyl compounds represented by the formula(Ia) and (Ib) are provided, wherein R is methyl, ethyl, propyl, isopropyl, isobutyl and allyl containing saturated or unsaturated alkyl, or phenyl containing aryl; R1, R2, R3 and R4 are independently selected from the group consisting of hydrogen, halogen atoms including Br, Cl, F and I, methyl and ethyl containing C1-C4 alkyl, hydroxy, C1-C4 alkoxy, acetoxy containing ester, and phenyl. A process for preparing the carbonyl compound of the formula(Ia) and (Ib) comprises the steps of: mixing a compound of formula(VI) with β-NADPH and a pH 5.0 to 8.0 buffer solution; adding carbonyl reductase isolated from Kluyveromyces marxianus into the mixture; and reacting the mixture at 20 to 40 deg. C for 5 hours to 5 days.
Abstract:
PURPOSE: Cepham derivatives prepared by the reaction of 3-hydroxy cephem derivatives and allylhalide or acetylene halide in a solvent in the presence of a metal catalyst and process for the preparation method thereof are provided which can be used as an intermediate for the manufacture of cephem antibiotics. CONSTITUTION: Cepham derivatives of formula (I) useful as an intermediate for producing cephem antibiotics are prepared by the reaction of 3-hydroxy cephem derivatives of formula (V) and allylhalide (III) or acetylene halide in a solvent in the presence of a metal catalyst at 0 to 100°C for 1 to 96 hr. In formula, R1 represents phenylacetyl, 2-£2-amino(1,3-thiazole-4-yl)-2-(hydroxyalkoxyimino)ethinyl, 2-£2-amino(1,3-thiazole-4-yl)-2-(alkoxyimino)ethinyl or 4-hydroxyphenylglycine derivative, R2 is H, carboxylic acid salts (sodium and potassium salt as inorganic salts, alkylamine salt, aromatic amine salt as organic salts), a molecular protecting group in the cephalosporin field of 4-methoxybenzyl, diphenylbenzyl, diphenylmethyl, 4-nitrobenzyl, allyl as a carboxyl protecting group, in a Q compound, R3, R4 and R5 represent each H, halogen, methyl, ethyl, hydroxy, phenyl or alkoxycarbonyl.
Abstract:
본 발명은 경구 투여가 가능한 새로운 세펨 에스테르 화합물 및 이의 제조방법에 관한 것으로, 그램 양성균과 그램 음성균에 대해 광범위의 항균력을 나타내며, 특히 MRSA를 포함한 여러 내성균에 강한 항균력을 나타내는 약제학적으로 유용한 화합물이다.
(I) 일반식 (I)에 있어서, R 1 은 수소 또는 트리틸기를 표시하며, R 2 는 수소, 트리틸기, 메틸기 또는 시클로펜틸기를 표시하며, R 3 는 수소, 클로로, 브로모 또는 메톡시기를 표시하며, R 4 는 아세톡시에틸, 피발로일옥시메틸 또는 이소프로폭시카르보닐옥시에틸기를 표시한다.
Abstract:
PURPOSE: The compound is provided which exhibits a high affinity for muscarinic acetylcholine receptor and is useful as therapeutic agent of cerebral nerve disease such as Alzheimer's disease. CONSTITUTION: The carbonyl compound of the formula (II), wherein, n is integer 1 or 2, is reacted with phosphonium salt compound of formula (III), in which R is H, halo, alkoxy, cyano, alkyl, alkenyl, alkinyl, hydroxy, amino, nitro, 4-methoxybenzyloxy, t-butoxycarbonylamino or its salt; R1, R2 and R3 are alkyl, aryl or aralkyl, respectively; X is halogen, or with phosphonate compound of the formula (IV) in the presence of solvent and base to give £(aryl) isooxozolyl| methylene-azabicyclo compound of the formula (I). Thus, 188mg of potassium t-butoxide and 482mg of diethyl 3-(4-methylphenyl)-5-isooxazolylmethylphosphonate being dissolved in tetrahydrofuran are stirred for 30 minutes at 22°C to give 3-£3-(4-methylphenyl)isooxazol-5-yl|methylene-1-azabicyclo£2.2.2|octane oxalic acid salt.
Abstract:
본 발명은 하기 일반식(I)의 화합물 또는 그의 제약학적으로 허용되는 염 및 에스테르를 제공한다.
상기 식 중, R 1 은 수소 또는 아미노 보호기이고, R 2 는 수소, 카르복실산 에스테르 또는 카르복실산염 형성기, 또는 카르복시 보호기이거나, 또는 -COOR 2 는 -COO 를 나타내고, R 3 및 R 4 는 서로 동일하거나 상이한 것으로서, 각각 수소 또는 페놀성 히드록시 보호기이고, Q는 수소, 할로겐, C 2-4 알케닐, 할로-C 1-4 알킬, C 3-12 알카노일옥시알킬 또는 Q′-C 1-4 알킬-(여기서, Q′는 헤테로 원자로서 1개 이상의 질소 원자를 함유하고 황원자를 통해 C 1-4 알킬과 결합되는 5원 내지 6월 헤테로 고리임)이다. 또한, 본 발명은 상기 일반식(I)의 화합물의 제조 방법 및 이에 사용되는 중간제의 제조 방법도 제공한다.