Abstract:
본 발명은 3(R)-메틸-[1,4]-벤즈옥사진 유도체를 출발 물질로하여 100 내지 160℃에서 1 내지 4시간 동안 폴리인산과 반응시키는 것을 특징으로 하는 (+)3(R)-메틸피리도벤즈옥사진 카르복실레이트 유도체의 제조 방법에 관한 것으로서, 이 제조 방법에서 출발 물질로 사용되는 3(R)-메틸-[1,4]-벤즈옥사진 유도체는 2-(2(S)-케토프로필옥시)니트로벤젠 유도체를 베이커 이스트와 당류 존재하에 물과 알콜 용매 중에서 25 내지 50℃에서 4 내지 10시간 동안 가열 교반시켜 2-(2(S)-히드록시프로필옥시)니트로벤젠 유도체를 얻고, 이 화합물을 금속 촉매 존재하에 알콜 용매 중에서 2 내지 6시간 동안 1기압의 수소와 반응시켜 2-(2(S)-피드록시프로필옥시)아닐린 유도체를 얻고, 이 화합물을 에탄올 용매 중에서 100 내지 160℃에서 5 내지 10시간 동안 알킬 에록시메틸렌말로네이 트와 반응시켜 N-(2,2-디에록시카르보닐에테닐)-2-(2(S)-히드록시프로필옥시)아닐린 유도체를 얻고, 이 화합물을 유기 용매 중에서 -10 내지 10℃에서 1 내지 4 시간 동안 트리페닐포스핀 및 디에틸아조디카르복실레이트와 반응시킴으로써 제조할 수 있다.
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:
Quinolone derivs. of formula (I) are prepd. by reacting cpds. of formula (II) with EDTA in polar solvent(i.e. mixt. of water/MeOH and water/EtOH) in the presence of metal powder selected from a gp. of Zn, Cu, Mn or Fe and catalytic amt. of iodides(i.e. NaI, KI, CaI2) for 1-10 hr at 50-100 deg. C. In the formulas, R=H, Me, Et, propyl or butyl; X=Br; Z=Cl or piperazinyl gp.. (I) are useful as an antibacterial agent.
Abstract translation:喹诺酮衍生物。 式(I)的化合物是制备的。 通过cpds反应。 式(II)与EDTA在极性溶剂(即水/ MeOH和水/ EtOH的混合物)中在金属粉末存在下,选自gp。 的Zn,Cu,Mn或Fe和催化剂。 的碘化物(即NaI,KI,CaI 2)在50-100℃下1-10小时。 式中,R = H,Me,Et,丙基或丁基; X = Br的; Z = Cl或哌嗪基gp(I)可用作抗菌剂。
Abstract:
PURPOSE: An oxaspiro compound and a method for preparing the same are provided to be used as an intermediate in a natural product or novel drug synthesis. CONSTITUTION: An oxaspiro compound is denoted by chemical formula 1. In chemical formula 1, R1 and R2 are hydrogen, alkyl group of C1-C6, halogen, nitro, alkyl of C1-C6, or substituted or non-substituted phenyl group as a substituent of C1-C6 alkoxy. The oxaspiro compound of chemical formula 1 is prepared by reacting a carbo compound of chemical formula 3 with methylene cycloalkandiol of chemical formula 2 under the presence of lewis acid. The reaction solvent is dichloro methane. Trimethylsilyl trifluoromethansulfonate(TMSOTf) is used as the lewis acid.
Abstract:
A method for manufacturing a tetrahydropyran derivative is provided to produce an intermediate for synthesizing functional natural material using a homopropagylic alcohol derivative and aldehyde compound. A tetrahydropyran derivative having cis-substituent on C2 and C6 is denoted by the chemical formula 1. In the chemical formula 1, R1 and R2 are separately C1-C6 alkyl group, C6-C15 aryl C1-C6 alkyl group, or C6-C15 aryl group. A method for manufacturing the tetrahydropyran derivative comprises a step of performing prince reaction of aldehyde compound of the chemical formula 3 with homopropagylic alcohol derivative of the chemical formula 2 to produce dihydropyran-3-ilyden triplate compound of the chemical formula 1a.
Abstract:
A composition for blocking T-type calcium channel comprising morpholin-2-one derivatives is provided to block the T-type calcium channel in the same level as the conventional T-type calcium channel blocker, mibefradil, without side effects. A composition for blocking T-type calcium channel comprises morpholin-2-one derivatives represented by the formula(1), or pharmaceutically acceptable salts thereof, wherein R^1 and R^2 are each independently hydrogen, C1-C6 alkyl, C1-C6 cycloalkyl, or phenyl optionally substituted by halogen, nitro, hydroxyl or C1-C6 alkoxy; and R^3 and R^4 are each independently hydrogen, C1-C6 alkyl, C1-C6 thioalkyl, amino or phenyl optionally substituted by halogen, nitro, hydroxyl or C1-C6 alkoxy. The composition prevents or treats diseases caused by overexpression of T-type calcium channel including angina pectoris, hypertension, myocardiac infarction, pain and epilepsy.
Abstract:
PURPOSE: Quinolone derivatives and a preparation process thereof are provided, thereby cheaply preparing quinolone derivatives under mild conditions. CONSTITUTION: Quinolone derivatives are represented by the formula 6, wherein R is H, or halogen selected from Cl, F, Br and I; R1 and R2 are independently H, alkyl or OH; and Y is -Ts(tosyl), -Ms(mesyl) or -Ac(acetyl). A process for preparing the quinolone 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.