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    • 2. 发明授权
    • Process for preparing 2′-deoxy-2′, 2′-difluorocytidine
    • 制备2'-脱氧-2',2'-二氟胞苷的方法
    • US07994310B2
    • 2011-08-09
    • US12532331
    • 2008-03-20
    • Su-Jin ParkChun-Rim OhYoung-Deuck Kim
    • Su-Jin ParkChun-Rim OhYoung-Deuck Kim
    • C07H19/073
    • C07H1/00C07H19/06Y02P20/55
    • Disclosed is a method for preparing 2′-deoxy-2′,2′-difluorocytidine of Formula I comprising, preparing an optically pure 3R-hydroxypropane amide compound of Formula VIII from an optical ester compound of Formula IX using an optically active chiral amine, preparing an optically pure D-erythro-2,2-difluoro-2-deoxy-1-oxoribose compound of Formula V from the compound of Formula VIII, glycosylating the compound of Formula V with a nucleobase to prepare the 2′-deoxy-2′,2′-difluorocytidine of Formula I as a β-nucleoside. With the present invention, it is possible to prepare an optically pure compound of Formula I in a high purity and a high yield. In the Formulae, R1 and R2 are protecting groups and are each independently benzoyl, 4-methylbenzoyl, 3-methylbenzoyl, 4-cyanobenzoyl, 3-cyanobenzoyl, 4-propylbenzoyl, 2-ethoxybenzoyl, 4-t-butylbenzoyl, 1-naphthoyl or 2-naphthoyl, R3, R4 and R7 are each independently C1-C3 alkyl, R5 is methyl or ethyl, R6 is hydrogen, methyl or methoxy.
    • 公开了一种制备式I的2'-脱氧-2',2'-二氟胞苷的方法,其包括:使用光学活性手性胺由式IX的光学酯化合物制备光学纯的3R-羟基丙酰胺化合物, 从式VIII化合物制备光学纯的D-型赤式-2,2-二氟-2-脱氧-1-氧代核糖核糖化合物,用式I化合物将式V化合物糖基化,从而制备2'-脱氧-2 ',式I的2'-二氟胞苷作为核苷。 通过本发明,可以以高纯度和高收率制备光学纯的式I化合物。 在式中,R 1和R 2是保护基,各自独立地是苯甲酰基,4-甲基苯甲酰基,3-甲基苯甲酰基,4-氰基苯甲酰基,3-氰基苯甲酰基,4-丙基苯甲酰基,2-乙氧基苯甲酰基,4-叔丁基苯甲酰基,1-萘甲酰基或 2-萘甲酰基,R3,R4和R7各自独立地为C1-C3烷基,R5为甲基或乙基,R6为氢,甲基或甲氧基。
    • 4. 发明申请
    • PROCESS FOR PREPARING OF 2'-DEOXY-2'2'-DIFLUOROCYTIDINE
    • 制备2'-脱氧-2'-脱氧胆碱的方法
    • US20100069625A1
    • 2010-03-18
    • US12532331
    • 2008-03-20
    • Su-Jin ParkChun-Rim OhYoung-Deuck Kim
    • Su-Jin ParkChun-Rim OhYoung-Deuck Kim
    • C07H19/06C07H3/02C07D317/08
    • C07H1/00C07H19/06Y02P20/55
    • Disclosed is a method for preparing 2′-deoxy-2′,2′-difluorocytidine of Formula I comprising, preparing an optically pure 3R-hydroxypropane amide compound of Formula VIII from an optical ester compound of Formula IX using an optically active chiral amine, preparing an optically pure D-erythro-2,2-difluoro-2-deoxy-1-oxoribose compound of Formula V from the compound of Formula VIII, glycosylating the compound of Formula V with a nucleobase to prepare the 2′-deoxy-2′,2′-difluorocytidine of Formula I as a β-nucleoside. With the present invention, it is possible to prepare an optically pure compound of Formula I in a high purity and a high yield. In the Formulae, R1 and R2 are protecting groups and are each independently benzoyl, 4-methylbenzoyl, 3-methylbenzoyl, 4-cyanobenzoyl, 3-cyanobenzoyl, 4-propylbenzoyl, 2-ethoxybenzoyl, 4-t-butylbenzoyl, 1-naphthoyl or 2-naphthoyl, R3, R4 and R7 are each independently C1-C3 alkyl, R5 is methyl or ethyl, R6 is hydrogen, methyl or methoxy.
    • 公开了一种制备式I的2'-脱氧-2',2'-二氟胞苷的方法,其包括:使用光学活性手性胺由式IX的光学酯化合物制备光学纯的3R-羟基丙酰胺化合物, 从式VIII化合物制备光学纯的D-型赤式-2,2-二氟-2-脱氧-1-氧代核糖核糖化合物,用式I化合物将式V化合物糖基化,从而制备2'-脱氧-2 ',式Ⅰ的2'-二氟胞苷作为核苷。 通过本发明,可以以高纯度和高收率制备光学纯的式I化合物。 在式中,R 1和R 2是保护基,各自独立地是苯甲酰基,4-甲基苯甲酰基,3-甲基苯甲酰基,4-氰基苯甲酰基,3-氰基苯甲酰基,4-丙基苯甲酰基,2-乙氧基苯甲酰基,4-叔丁基苯甲酰基,1-萘甲酰基或 2-萘甲酰基,R3,R4和R7各自独立地为C1-C3烷基,R5为甲基或乙基,R6为氢,甲基或甲氧基。