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    • 2. 发明公开
    • 4,4,4-트리플루오로-1-(4-메틸페닐)부탄-1,3-디온의 신규한 제조방법
    • 4,4,4-三氟-1-(4-甲基苯基)丁烷-1,3-二酮的新合成方法
    • KR1020110001415A
    • 2011-01-06
    • KR1020090058937
    • 2009-06-30
    • 주식회사 대희화학
    • 민연식최귀용신필수
    • C07D231/14
    • PURPOSE: A method for preparing 4,4,4-trifluoro-1-(4-methyl phenyl)butane-1,3-dione is provided to reduce preparation cost and to commercially prepare a large amount of the compound. CONSTITUTION: A method for preparing 4,4,4-trifluoro-1-(4-methyl phenyl)butane-1,3-dione comprises: a step of reacting ethyl trifluoro acetate and ethyl acetate under the presence of base to obtain ethyl 4,4,4-trifluoro-3-oxo-butanoate; a step of reacting the resultant and hydrogen donor to obtain 4,4,4-trifluoro-3-oxo butanoic acid; a step of reacting the resultant with thiochloride; and a step of performing Friedal-Crafts acylation reaction with toluene under the presence of aluminum chloride to prepare trifluoro-1-(4-methyl phenyl)butan-1,3-dione. The hydrogen donor is trifluorocetic acid, acetic acid, propionic acid or butanoic acid.
    • 目的:提供制备4,4,4-三氟-1-(4-甲基苯基)丁烷-1,3-二酮的方法以降低制备成本并在商业上制备大量的化合物。 构成:制备4,4,4-三氟-1-(4-甲基苯基)丁烷-1,3-二酮的方法包括:在碱的存在下使三氟乙酸乙酯和乙酸乙酯反应,得到乙基4 ,4,4-三氟-3-氧代 - 丁酸乙酯; 使得到的和供氢体反应得到4,4,4-三氟-3-氧代丁酸的步骤; 使所得物与氯化物反应的步骤; 和在氯化铝存在下与甲苯进行Fried-Crafts酰化反应以制备三氟-1-(4-甲基苯基)丁-1,3-二酮的步骤。 氢供体是三氟酸,乙酸,丙酸或丁酸。
    • 3. 发明公开
    • 발사르탄 메틸 에스테르의 제조방법
    • 制备VALSARTAN甲基酯的方法
    • KR1020100070908A
    • 2010-06-28
    • KR1020080129652
    • 2008-12-18
    • 주식회사 대희화학
    • 민연식이형철
    • C07C263/10C07C271/12
    • PURPOSE: A preparing method of high purity valsartan methyl ester is provided to obtain a product with the high purity without performing complex refining processes, by preventing dimeric impurities from generating. CONSTITUTION: A preparing method of high purity valsartan methyl ester comprises the following steps: condencing 4'-bromomethyl-2-cyanobiphenyl and N-(trimethylsilyl)-(L)-valine methyl ester to form N-[(2'-cyano biphenyl-4-yl)methyl]-(L)-valine methyl ester; amid-reacting the N-[(2'-cyano biphenyl-4-yl)methyl]-(L)-valine methyl ester with valeryl chloride to obtain N-[(2'-cyano biphenyl-4-yl)methyl]-(L)-valeryl-(L)-valine methyl ester; and cyclic reacting the N-[(2'-cyano biphenyl-4-yl)methyl]-(L)-valeryl-(L)-valine methyl ester with dibutyltin oxide and trimethylsilyl azide.
    • 目的:提供高纯度缬沙坦甲酯的制备方法,通过防止二聚物杂质的产生,得到高纯度产品,无需进行复杂的精制工艺。 构成:高纯度缬沙坦甲酯的制备方法包括以下步骤:使4'-溴甲基-2-氰基联苯和N-(三甲基甲硅烷基) - (L) - 缬氨酸甲酯调节形成N - [(2'-氰基联苯 -4-基)甲基] - (L) - 缬氨酸甲酯; 使N - [(2'-氰基联苯-4-基)甲基] - (L) - 缬氨酸甲酯与戊酰氯反应,得到N - [(2'-氰基联苯-4-基)甲基] (L) - 戊酰基 - (L) - 缬氨酸甲酯; 并使N - [(2'-氰基联苯-4-基)甲基] - (L) - 戊酰基 - (L) - 缬氨酸甲酯与二丁基氧化锡和三甲基甲硅烷基叠氮化物进行环状反应。
    • 4. 发明公开
    • 아데포버 디피복실의 신규한 제조방법
    • ADEFORVIR DIPIVOXIL的新制备
    • KR1020100038695A
    • 2010-04-15
    • KR1020080097760
    • 2008-10-06
    • 주식회사 대희화학
    • 민연식조현성신필수
    • C07D473/02
    • PURPOSE: A method for preparing an adeforvir dipivoxil(AD) is provided to simplify preparation process and to massively produce the adeforvir dipivoxil. CONSTITUTION: An adeforvir dipivoxil(AD) is prepared by reacting 9-[2-(phosphonomethoxy)ethyl]adenine with chloromethyl pivalate under the presence of dimethylformamide and 1,8-diazabicycle[5,4,0]undec-7-en. The mole ratio of 9-[2-(phosphonomethoxy)ethyl]adenine and dimethylformamide is 1:10.5-35. The reaction mole ratio of 9-[2-(phosphonomethoxy)ethyl]adenine and 1,8-diazabicycle[5,4,0]undec-7-en is 1:2-3. The reaction temperature is 10-25°C.
    • 目的:提供一种制备阿德福韦酯(AD)的方法,以简化制备过程,并大量生产阿维拉片剂。 构成:在二甲基甲酰胺和1,8-二氮杂双环[5,4,0]十一碳-7-烯的存在下,使9- [2-(膦基甲氧基)乙基]腺嘌呤与新戊酸氯甲酯反应制备阿维拉韦二恶唑(AD)。 9- [2-(膦基甲氧基)乙基]腺嘌呤和二甲基甲酰胺的摩尔比为1:10.5-35。 9- [2-(膦基甲氧基)乙基]腺嘌呤和1,8-二氮杂双环[5,4,0]十一碳-7-烯的反应摩尔比为1:2-3。 反应温度为10-25℃。
    • 8. 发明公开
    • 신규한 라미부딘 유기산부가염과 이의 제조방법
    • 新型有机酸添加剂及其制备方法
    • KR1020140140334A
    • 2014-12-09
    • KR1020130061050
    • 2013-05-29
    • 주식회사 대희화학
    • 민연식심성보김민석김병수
    • C07D411/04A61K31/506A61P31/18
    • 본 발명은 라미부딘 페닐아세테이트, 라미부딘 4-클로로페닐아세테이트, 라미부딘 4-히드록시페닐아세테이트, 라미부딘 4-니트로페닐아세테이트, 라미부딘 4-니트로벤조에이트, 라미부딘 4-히드록시벤조에이트, 및 라미부딘 2-히드록시-3-메톡시벤조에이트 중에서 선택된 라미부딘 유기산부가염과 이의 제조방법에 관한 것이다.
      본 발명의 신규 라미부딘 산부가염은 뉴클레오티드 역전사 효소 저해활성을 가지는 신규 화합물로 AIDS(HIV) 및 B형간염(HBV) 치료제 등의 항바이러스 약제로 유용하게 활용될 수 있다.
    • 本发明涉及拉米夫定的有机酸加成盐,其选自拉米夫定苯基乙酸酯,拉米夫定4-氯苯基乙酸酯,拉米夫定4-羟基苯基乙酸酯,拉米夫定4-硝基苯基乙酸酯,拉米夫定4-硝基苯甲酸酯,拉米夫定4-羟基苯甲酸酯和拉米夫定2-羟基 -3-甲氧基苯甲酸甲酯。 本发明的拉米夫定的有机酸加成盐是具有抑制逆转录酶活性的新化合物,可有利地用作抗病毒剂,例如艾滋病(HIV)治疗剂和乙型肝炎(HBV)治疗 剂。