Abstract:
The piperazine benzoxazine derivatives(I; R, R1, R2= H, C1-4 alkyl), useful as an antibacterial agent, were prepared by the reaction of (-)benzoxazine derivatives(III) and piperazine derivatives(IV; R1, R2= H, C1-4 alkyl; Z= H, trialkylsilyl) at 60- 80 deg.C for 2- 3 hours in an organic solvent in the presence of a mixture of tetraalkylammonium halide, tetraammonium halide and metal fluoride. The derivatives(III) were prepared by the reaction of (+)-aminomethylene-3-oxo-3- phenylpropionate derivatives(II; X= halogen atom; X1, X2= halogen atom, nitro group; R3, R4= C1-4 alkyl) and a base such as metal hydroxide or metal hydride at 50- 150 deg.C for 2- 24 hours in an organic polar solvent such as acetonitrile, dimethylacetamide, etc. and water.
Abstract:
본 발명은 박테리아에 살균 효과를 나타내는 강력한 항균제인 피리도벤즈옥사진 제조에 사용되는 중간체인 일반식(I)의 (+)2-벤조일-3-(실릴옥시프로피-2(S)-일) 아미노 아크릴레이트 유도체 제조방법에 관한 것이다.
일반식(I)에서 X는 불소 또는 염소원자, X 1 , X 2 는 할로겐원자 또는 니트로기, R 1 , R 2 , R 3 , R 4 는 탄소원자 1 내지 8개의 알킬 또는 아릴기를 나타낸다. 본 발명에서는 일반식(III)의 아크릴레이트 유도체와 일반식(IV)의 트리알킬실릴클로라이드를 염기 존재하에 유기용매 중에서 반응시켜 일반식(V)의 (+)실릴아크릴옥시아크릴레이트 유도체를 제조하고 일반식(V) (+)실릴옥시아크릴레이트 유도와 일반식(VI)의 벤조일클로라이드를 염기 존재하에 유기용매 중에서 반응시켜 일반식(I)의 화합물을 제조한다.
일반식(III),(IV),(V)에서 R 1 , R 2 , R 3 , R 4 는 탄소원자 1 내지 8개의 알킬 또는 아릴기를 나타내고, 일반식(IV)에서 X는 불소 또는 염소원자, X 1 , X 2 는 할로겐 또는 니트로기를 표시한다.
Abstract:
PURPOSE: An antibacterial composition containing novel oxazolidinone derivative is provided to ensure antibacterial activity against gram positive bacteria. CONSTITUTION: A novel oxazolidinone derivative with antibacterial activity is denoted by chemical formula 1. A method for preparing the compound of chemical formula 1 or the salt thereof comprises: a step of reacting an amine group of a compound of chemical formula 2 with a compound of chemical formula 3 or 4; and a step of substituting a hydroxyl group of an oxazolidinone derivative or a pharmaceutically acceptable salt thereof with a halogen group or methoxy group. An antibacterial composition contains the oxazolidinone derivative of chemical formula 1 or a salt thereof as an active ingredient.
Abstract:
본 발명은 하기 화학식 1로 표시되는 신규 페닐아세테이트 유도체 또는 이의 약학적으로 허용가능한 염, 이의 제조방법 및 이를 유효성분으로 함유하는 T-형 칼슘 이온 채널의 활성에 의해 유발되는 질환의 예방 또는 치료용 조성물에 관한 것으로, 본 발명에 따른 페닐아세테이트 유도체를 함유하는 조성물은 T-형 칼슘 이온 채널 활성을 효과적으로 억제하므로 T-형 칼슘 이온 채널의 활성에 의해 유발되는 고혈압, 암, 간질, 신경성 통증 등의 질병의 예방 또는 치료제로서 유용하게 사용될 수 있다. [화학식 1] . (상기 화학식 1에서, 상기 X, R 1 및 R 2 는 본 명세서에서 정의된 바와 같다.) T-형 칼슘 채널 블로커, 페닐아세테이트 유도체, 통증치료제
Abstract:
PURPOSE: A thiazoline compounds and a T-type calcium channel inhibitor containing the same are provided to treat diseases relating to T-type calcium channel overexpression. CONSTITUTION: A thiazoline compounds have a structure of chemical formula 1. A composition for preventing and treating diseases relating to T-type calcium channel overexpression contains the thiazoline compounds of chemical formula 1. The diseases are Parkinson's disease, Alzheimer, schizophrenia, somnopathy, pain, hypertension, arrhythmia, angina, cardiac insufficiency, myocardial infarction, or cancer.
Abstract:
PURPOSE: A novel phenylacetate derivative and a composition containing the same are provided to suppress T-type calcium ion channel activity and to use as a therapeutic agent for preventing or treating diseases caused by T-type calcium ion channel activity. CONSTITUTION: A phenylacetate derivative is denoted by chemical formula 1. A method for preparing the phenylacetate derivative comprises: a step of performing esterification of a carboxylic acid compound of chemical formula 2 under acid catalyst to obtain an ester compound of chemical formula 3; a step of reacting the compound of chemical formula 3 with t-butoxide and isopropyl bromide to obtain a compound of chemical formula 4; a step of reacting the compound of chemical formula 4 with 1,3-dibromopropane to obtain a compound of chemical formula 5; and a step of reacting the compound of chemical formula 5 with a compound of chemical formula 6 or 7.
Abstract:
PURPOSE: A process for preparing benzylated aromatics useful as an intermediate in a synthetic chemical industry or a final compound by benzylation of a benzyl halogen compound and aromatic compound in the presence of an indium catalyst is provided which has the advantage of capable of producing the title compound in a simple manner and being reused and requiring no special solvents. CONSTITUTION: The benzylated aromatics of formula (III) are produced by reaction of a benzyl halogen compound of formula (I) and aromatic compound of formula (II) at 20 to 120deg.C for 1 to 24 hr in the presence of an indium catalyst. In formula, R1, R2 and R3 represent independently H, F, Br, methyl and nitro; R4, R5 and R6 represent independently H, F, Cl, hydroxy, methoxy and methyl, wherein a molar ratio of the aromatic compound and benzyl halogen compound is within the range of 1 to 100 : 1.