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    • 2. 发明公开
    • 세포테탄을 고 수율로 수득하는 방법
    • 具有高效率获得骨灰质素的方法
    • KR1020060130491A
    • 2006-12-19
    • KR1020060046640
    • 2006-05-24
    • 에이씨에스 도브파 에스.피.에이.
    • 체노니마우리지오망카안토니오몽구찌리카르도
    • C07D501/36
    • C07D501/48
    • A process for preparing cefotetan is provided to increase preparation yield and reduce the preparation time, so that tautomer-free cefotetan is industrially produced. The process for preparing cefotetan represented by the formula(1) comprises the steps of: cooling crude cefotetan solution at 0-4 deg.C; contacting the crude cefotetan solution with Al^3+ ion derived from neutral alumina, anhydrous aluminum trichoride or aluminum trichloride hexahydrate, or Fe^+3 or Cr^+3 ion to form a precipitate with tautomer compound represented by the formula(2) at pH 7.0-7.2; filtering the solution to remove the precipitate; reducing pH of the solution to 1.3-1.5 so as to precipitate the cefotetan; and filtering the solution at 0-4 deg.C to separate the cefotetan, wherein the cefotetan contains 0.2% or less of tautomer, and is a acid type having K.F of 2.5% or less and dry concentration of 99.0% or more.
    • 提供了头孢替坦的制备方法以提高制备成品率并缩短制备时间,从而在工业上生产不含互变异构头孢替坦的方法。 由式(1)表示的头孢替坦的制备方法包括以下步骤:在0-4℃下冷却粗头孢替丹溶液; 将粗制头孢曲坦溶液与来自中性氧化铝,无水三氯化铝或三氯化铝六水合物的Al 3+离子或Fe 3+ 3或Cr 2+离子接触以形成与由式(2)表示的互变异构体化合物的沉淀物 pH 7.0-7.2; 过滤溶液以除去沉淀物; 将溶液的pH降至1.3-1.5,以沉淀头孢替坦; 并在0-4℃下过滤溶液以分离头孢替坦,其中头孢替坦含有0.2%或更少的互变异构体,是KF为2.5%以下,干浓度为99.0%以上的酸型。
    • 3. 发明公开
    • 신규 세팔로스포린 화합물 및 그의 제조방법
    • CEPHOROSPORIN化合物及其制备方法
    • KR1020030071311A
    • 2003-09-03
    • KR1020020010960
    • 2002-02-28
    • 주식회사 엘지생명과학
    • 이창석김근태장용진유은정조양래주형렬
    • C07D501/36
    • Y02P20/55
    • PURPOSE: Provided are cephalosporin compounds and a preparation process thereof, which compounds have strong antimicrobial activity, especially to methicillin resistant Staphylococcus aureus(MRSA). CONSTITUTION: Cephalosporin compounds represented by the formula (1) are provided, wherein R1 and R2 are independently hydrogen, halogen, C1-6 alkyl, C1-6 alkylthio, aryl, arylthio or C5-6 heteroaryl containing 1 to 2 hetero atoms selected from nitrogen and oxygen; R3 is hydrogen or carboxy protecting group; R4, R5 and R6 are independently hydrogen, hydroxy, C1-6 alkyl, C1-6 alkyloxy or C1-6 alkylamino; R7 is hydrogen, hydroxy, amino, C1-6 alkyl, C1-6 alkyloxy, C1-6 alkylamino, or amino or hydroxy substituted or unsubstituted C1-6 alkylthio; Q is sulfur, oxygen or carbon; W and Y are independently C or N, provided that R4 and R6 are not present when W or Y is N; and olefin positioned at the C-3 site where heteroarylthio is substituted comprises cis or trans forms. A process for preparing the cephalosporin compounds of the formula (1) comprises the steps of: activating a compound of the formula (6) or salts thereof with an acylating agent; reacting the activated compound of the formula (6) with a compound of formula (5) to prepare a compound of the formula (11); and reducing the compound of the formula (11) from S to oxide, wherein p is 0 or 1; and a double bond positioned at the C-3 site comprises trans and cis forms.
    • 目的:提供头孢菌素化合物及其制备方法,该化合物具有很强的抗微生物活性,特别是耐甲氧西林金黄色葡萄球菌(MRSA)。 构成:提供由式(1)表示的头孢菌素化合物,其中R 1和R 2独立地为氢,卤素,C 1-6烷基,C 1-6烷硫基,芳基,芳硫基或C 1-6杂芳基,其含有1至2个选自 氮和氧; R3是氢或羧基保护基; R4,R5和R6独立地是氢,羟基,C1-6烷基,C1-6烷氧基或C1-6烷基氨基; R7是氢,羟基,氨基,C1-6烷基,C1-6烷氧基,C1-6烷基氨基或氨基或羟基取代或未取代的C1-6烷硫基; Q是硫,氧或碳; W和Y独立地为C或N,条件是当W或Y为N时不存在R4和R6; 并且位于被取代杂芳硫基的C-3位置的烯烃包括顺式或反式。 制备式(1)的头孢菌素化合物的方法包括以下步骤:用酰化剂活化式(6)化合物或其盐; 使式(6)的活化化合物与式(5)化合物反应以制备式(11)化合物; 并将式(11)的化合物从S还原成氧化物,其中p为0或1; 并且位于C-3位点的双键包含反式和顺式形式。
    • 6. 发明公开
    • 고순도 세프포독심 프록세틸의 제조방법
    • 制备高纯度CEFPODOXIME PROXETIL的方法
    • KR1020010045748A
    • 2001-06-05
    • KR1019990049174
    • 1999-11-08
    • 한미사이언스 주식회사
    • 이관순장영길이재헌박철현박가승정금신
    • C07D501/36
    • C07D501/00
    • PURPOSE: Provided is a method for simply and economically manufacturing high-purity cefpodoxime proxetil which is useful as antibiotics without generating byproducts. CONSTITUTION: The method for manufacturing high-purity cefpodoxime proxetil of the formula (1) is characterized by reacting cefpodoxime salt of the formula (3) with 1-iodoethylisopropylcarbonate of the formula (4) at minus10-40 deg.C, preferably 0-30 deg.C, for 0.5-3.0 hours, preferably 0.5-1.5 hours, in the presence of catalyst like crown ether and organic solvent. And cefpodoxime salt and 1-iodoethylisopropylcarbonate are added in a ratio of 1:1-3, preferably 1.2-1.5. The organic solvent is selected from acetonitrile, tetrahydrofuran, N,N-dimethylformamide, N,N-dimethylsulfoxide, and N,N-dimethylacetamide.
    • 目的:提供简单经济地制造高纯度头孢泊肟酯的方法,它可用作抗生素而不产生副产物。 构成:式(1)的高纯度头孢泊肟酯的制备方法的特征在于使式(3)的头孢泊肟盐与式(4)的1-碘代乙基异丙基碳酸酯在-10-40℃下反应, 30℃,0.5-3.0小时,优选0.5-1.5小时,在催化剂如冠醚和有机溶剂存在下进行。 并且加入头孢泊肟盐和1-碘乙基异丙基碳酸酯的比例为1:1.3,优选1.2-1.5。 有机溶剂选自乙腈,四氢呋喃,N,N-二甲基甲酰胺,N,N-二甲基亚砜和N,N-二甲基乙酰胺。