[EN] CYCLIC SULPHINYL ESTERS OF CYTIDINE<br/>[FR] ESTERS SULFINYLE CYCLIQUES DE CYTIDINE
申请人:GENERICS UK LTD
公开号:WO2011067588A1
公开(公告)日:2011-06-09
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: R1 and R3 arc each independendy selected from hydrogen, -F, -CI, -Br, -I, -CN, -NO2, -N3, -O-R7, -S-R7, -N(R7)2, -N(R7)3+ or -0-Si(R7)3; R4 and R5 arc each independendy selected from hydrogen, -F, -CI, -Br and -I; R6 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 R7 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 R7 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和改进的制备N-功能化胞嘧啶衍生物(如卡培他滨,加洛他滨和萨帕他滨)的过程。所述中间体是从化合物(A-2),(A-3),(A-6),(A-7)中选择的。其中:R1和R3各自独立地选自氢,-F,-CI,-Br,-I,-CN,-NO2,-N3,-O-R7,-S-R7,-N(R7)2,-N(R7)3+或-0-Si(R7)3; R4和R5各自独立地选自氢,-F,-CI,-Br和-I; R6选自烷基,烯烃基,炔基,芳基,取代的芳基烷基,取代的芳基烯烃基,取代的芳基炔基,烷基芳基,烯烃基芳基或炔基芳基基团,其中每个基团可以选择性地被取代,并且每个基团可以选择性地包含一个或多个N,O或S杂原子在其碳骨架中; 每个R7独立地选自氢,或烷基,烯烃基,炔基,芳基,取代的芳基烷基,取代的芳基烯烃基,取代的芳基炔基,烷基芳基,烯烃基芳基或炔基芳基基团,其中每个基团可以选择性地被取代,并且每个基团可以选择性地包含一个或多个N,O或S杂原子在其碳骨架中,任何两个或多个R7基团可以与它们附着的原子一起形成环烷基,烯烃基,炔基,芳基,取代的芳基烷基,取代的芳基烯烃基,取代的芳基炔基,烷基芳基,烯烃基芳基或炔基芳基基团,其中每个基团可以选择性地被取代,并且每个基团可以选择性地包含一个或多个N,O或S杂原子在其碳骨架中。