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    • 2. 发明申请
    • CYCLIC SULPHINYL ESTERS OF CYTIDINE
    • CYTIDINE的CYCLIC SULPHINYLESTERS
    • WO2011067588A1
    • 2011-06-09
    • PCT/GB2010/051994
    • 2010-11-30
    • GENERICS [UK] LIMITEDMYLAN INDIA PRIVATE LIMITEDGORE, Vinayak GovindPATKAR, LaxmikantBAGUL, AmitEDAKE, Mahesh
    • GORE, Vinayak GovindPATKAR, LaxmikantBAGUL, AmitEDAKE, Mahesh
    • C07H19/06
    • C07H19/06
    • The present invention relates to novel intermediates and to an improved process for the preparation of N- functionalised cytidine derivatives such as capecitabine, galocitabine and sapacitabine. Said intermediates are se from a copound of formula (A- 2), (A-3), (A-6), (A-7). wherein: R 1 and R 3 arc each independendy selected from hydrogen, -F, -CI, -Br, -I, -CN, -NO 2 , -N 3 , -O-R 7 , -S-R 7 , -N(R 7 ) 2 , -N(R 7 ) 3 + or -0-Si(R 7 ) 3 ; R 4 and R 5 arc each independendy selected from hydrogen, -F, -CI, -Br and -I; R 6 is selected from an alkyl, alkenyl, alkynyl, atyl, aiylalkyl, arylalkenyl, arylalkynyl, alkylaiyl, alkenylaryl or alkynylaryl group, each of which may optionally be substituted, and each of which may optionally include one or more heteroatoms N, O or S in its carbon skeleton; and each R 7 is independendy selected from hydrogen, or an alkyl, alkenyl, alkynyl, atyl, aiylalkyl, arylalkenyl, arylalkynyl, alkylaiyl, alkenylaryl or alkynylaryl group, each of which may optionally he substituted, and each of which may optionally include one or more heteroatoms N, O or S in its carbon skeleton, and wherein any two or more R 7 groups may, together with rhe atom or atoms to which they are attached, form a cyclic alkyl, alkenyl, alkynyl, aryl, aiylalkyl, arylalkcnyl, arylalkynyl, alkylaiyl, alkenylaryl or alkynylaryl group, each of which may optionally be substituted, and each of which may optionally include one or more heteroatoms N, O or S in its carbon skeleton.
    • 本发明涉及新型中间体以及用于制备N-功能化胞苷衍生物如卡培他滨,乙酰西他滨和西他滨的改进方法。 所述中间体是式(A-2),(A-3),(A-6),(A-7)的组合物。 其中:R 1和R 3各自独立地选自氢,-F,-C 1,-Br,-I,-CN,-NO 2,-N 3,-O-R 7,-S-R 7,-N(R 7) -N(R 7)3+或-O-Si(R 7)3; R4和R5各自独立地选自氢,-F,-CI,-Br和-I; R 6选自烷基,烯基,炔基,芳基,芳基烷基,芳基烯基,芳基炔基,烷基亚烷基,烯基芳基或炔基芳基,其各自可任选被取代,并且其各自可以任选地包括一个或多个杂原子N,O或S 在其碳骨架; 并且每个R 7独立地选自氢或烷基,烯基,炔基,芳基,芳基烷基,芳基烯基,芳基炔基,烷基亚烷基,烯基芳基或炔基芳基,其各自可以任选地被它取代,并且它们各自可以任选地包括一个或多个 杂原子N,O或S在其碳骨架中,并且其中任何两个或更多个R 7基团可以与它们所连接的转原子或原子一起形成环烷基,烯基,炔基,芳基,芳基烷基,芳基炔基,芳基炔基, 烷基亚烷基,烯基芳基或炔基芳基,其各自可任选被取代,并且其各自可以任选地在其碳骨架中包含一个或多个杂原子N,O或S。