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    • 5. 发明公开
    • (1R, 5R, 6S)-p-나이트로벤질-2-(다이페닐포스포릴옥시)-6-[(R)-1-하이드록시에틸]-1-메틸-카바페넴-3-카복실레이트(MAP)결정형 Ⅱ의 제조방법
    • 制备(1R,5R,6S)-P-硝基苯基-2-二苯基膦基锂的晶体形式II的方法-6 - [(R)-1-羟基乙基] -1-甲基 - 碳酰基-3-羧酸酯
    • KR1020100052868A
    • 2010-05-20
    • KR1020080111741
    • 2008-11-11
    • 주식회사 대웅제약대웅바이오 주식회사
    • 문성철이경호송충현전선아박성우이병구최수진송윤석강필구
    • C07D487/04C07D477/20C07D413/14
    • PURPOSE: A method for preparing (1R, 5R, 6S)-p-nitrobenzyl-2-(diphenylphosphoryloxy)-6-[(R)-1-hydroxyethyl]-1-methyl-carbapenem-3-carboylate(MAP) crystalline II is provided to obtain MAP crystalline II of high purity and high yield without separate cooling process. CONSTITUTION: A method for preparing (1R, 5R, 6S)-p-nitrobenzyl-2-(diphenylphosphoryloxy)-6-[(R)-1-hydroxyethyl]-1-methyl-carbapenem-3-carboylate(MAP) crystalline II comprises: a step of dissolving (1R, 5R, 6S)-p-nitrobenzyl-2-(diphenylphosphoryloxy)-6-[(R)-1-hydroxyethyl]-1-methyl-carbapenem-3-carboylate(MAP) crystalline I in dichloromethane, chloroform, or acetone; and a step of crystallizing by dropping diethyl ether, isopropyl ether, normal hexane, normal heptanes, or cyclo hexane. The dichloromethane or chloroform is used in a volume of 2-10 times to MAP weight. The acetone is used in a volume of 2-10 times to MAP weight. The MAP crystalline I is dissolved in dichloromethane or chloroform at 5-60°C or in acetone at 30-60°C.
    • 目的:制备(1R,5R,6S)对硝基苄基-2-(二苯基磷酰氧基)-6 - [(R)-1-羟乙基] -1-甲基 - 碳青霉烯-3-甲酸酯(MAP)结晶II 被提供以获得高纯度和高产率的MAP结晶II,而不需要单独的冷却过程。 构成:制备(1R,5R,6S)对硝基苄基-2-(二苯基磷酰氧基)-6 - [(R)-1-羟乙基] -1-甲基 - 碳青霉烯-3-甲酰胺(MAP)结晶II 包括:将(1R,5R,6S)对硝基苄基-2-(二苯基磷酰氧基)-6 - [(R)-1-羟乙基] -1-甲基 - 碳青霉烯-3-甲酰胺(MAP)结晶I 在二氯甲烷,氯仿或丙酮中; 和通过滴加二乙醚,异丙醚,正己烷,正庚烷或环己烷的结晶步骤。 二氯甲烷或氯仿的使用体积为MAP重量的2-10倍。 丙酮的使用量是MAP重量的2-10倍。 MAP结晶I在30-60℃溶于二氯甲烷或氯仿或5-60℃丙酮。
    • 10. 发明公开
    • 키랄 보조제를 이용한 4-비엠에이의 입체선택적 제조방법
    • 使用辅助辅助剂的4-BMA的立体选择性制备方法
    • KR1020080093315A
    • 2008-10-21
    • KR1020070037108
    • 2007-04-16
    • 주식회사 대웅제약대웅바이오 주식회사
    • 신동균홍명찬이원구하현준문성철송충현이경호한창완김종혁이병구송윤석
    • C07D205/08
    • C07D205/08C07D263/04Y02P20/55
    • A process for preparation of 4-BMA(beta-methylazethidin-2-one; (3R,4S)-3-[[[R]-1'-t-bytyldimethylsilyloxy]ethyl-4-[(R)-1"-carboxyethyl]-2-azethidinone) is provided to improve preparation yield and convenient by performing reaction under mild condition by using a chiral auxiliary, so that 4-BMA is useful as an intermediate for preparation of carbapenem and penem antibiotics. A process for preparation of 4-BMA represented by the formula(6) comprises the steps of: reacting a compound represented by the formula(1) in the presence of base and diethylcarbonate to prepare a compound represented by the formula(2); reacting the compound represented by the formula(2) in the presence or organic base selected from triethylamine(TEA), diisopropylethylamine(DIPEA), diethylamine(DEA) and butylamine, solvent selected from methylene chloride, dichloroethane and chloroform and Lewis acid with propionic acid anhydride to prepare a compound represented by the formula(3) as a chiral auxiliary; coupling the compound represented by the formula(3) in the presence of organic base and solvent with azethidinone compound represented by the formula(4) by using titanium chloride(TiCl4) to prepare a compound represented by the formula(5); and hydrolyzing the compound represented by the formula(5), wherein R is hydrogen or hydroxyl protecting group selected from t-butyldimethylsilyl, t-butylphenylsilyl, triethylsilyl and trimethylsilyl.
    • 制备4-BMA(β-甲基氮杂环丁烷-2-酮;(3R,4S)-3 - [[[R] -1'-叔丁基二甲基甲硅烷氧基)乙基-4 - [(R)-1“ - 羧乙基] -2-氮杂环丁酮),通过使用手性助剂在温和条件下进行反应,提高制备产率,使4-BMA作为制备碳青霉烯类和青霉烯类抗生素的中间体是有用的。 由式(6)表示的4-BMA包括以下步骤:在碱和碳酸二乙酯的存在下使由式(1)表示的化合物反应,以制备由式(2)表示的化合物;使由 式(2)在选自三乙胺(TEA),二异丙基乙胺(DIPEA),二乙胺(DEA)和丁胺,二氯甲烷,二氯乙烷和氯仿的溶剂和路易斯酸与丙酸酐的存在下或有机碱存在下反应制备代表的化合物 通过式(3)作为手性助剂;偶联 在有机碱和溶剂的存在下,通过使用氯化钛(TiCl 4)由式(4)表示的氮杂环丁酮化合物,由式(3)表示的化合物以制备式(5)表示的化合物; 并水解式(5)表示的化合物,其中R是氢或选自叔丁基二甲基甲硅烷基,叔丁基苯基甲硅烷基,三乙基甲硅烷基和三甲基甲硅烷基的羟基保护基。