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    • 6. 发明申请
    • PROCESS FOR PREPARING CEPHALOTAXINE ESTERS
    • 制备头孢噻肟酯的方法
    • WO2010103405A3
    • 2010-11-04
    • PCT/IB2010000835
    • 2010-03-11
    • ROBIN JEAN-PIERRERADOSEVIC NINABLANCHARD JULIE
    • ROBIN JEAN-PIERRERADOSEVIC NINABLANCHARD JULIE
    • A61P35/00C07D491/147
    • C07D491/056C07D263/44C07D307/58C07D307/60C07D491/147C07D498/08C07D498/22
    • A process for preparing cephalotaxine esters corresponding to the following general formula I which comprises the cephalotaxine backbone: C(R1) (R2) (XH)COO[CTX] wherein CTX represents the cephalotaxine backbone, being optionally substituted and/or dehydrogenated, in which formula I, X is a heteroatom, preferably an oxygen, a sulfur or a nitrogen, R1 and R2, taken separately, may be alkyl, cycloalkyl, heteroalkyl, aryl, heteroaryl, heterocycloalkyl or aralkyl groups, said groups being optionally interrupted by ester functions, or groups that can form one or more rings or a heterocycle together, consisting in bringing the corresponding cephalotaxine compound, or salts, isomers or tautomeric forms thereof, which is free or which is in the form of a metal alkoxide corresponding to the following general formula CTXOM, wherein CTX represents the cephalotaxine backbone, being optionally substituted and/or dehydrogenated, in which M is a hydrogen atom or a metal atom, into contact with a heterocyclic side chain precursor having both a bifunctional protected (bidentate) and activated (acylating) form of an acid bearing a hydrogenated heteroatom, in the alpha (a) position with respect to the carboxyl group, and corresponding to the following general formula: in which case W is a carbon, sulfur, silicon or bore atom, X, R1 and R2 have respectively the same meaning as above, it being possible for R1 and R2 to form a ring or a heterocycle together, and Y and Z are alkyl or heteroalkyl radicals, or monovalent heteroatoms, which may be identical or different, in an independent manner, or may fuse so as to give a divalent heteroatom, it being possible for the X-W bond to be covalent or ionic.
    • 一种制备对应于下列通式I的三尖杉碱酯的方法,该酯包括三尖杉碱主链:C(R1)(R2)(XH)COO [CTX]其中CTX代表任意取代和/或脱氢的三尖杉碱骨架,其中 式I,X为杂原子,优选为氧,硫或氮,R 1和R 2分别为烷基,环烷基,杂烷基,芳基,杂芳基,杂环烷基或芳烷基,所述基团任选被酯官能 ,或可以一起形成一个或多个环或杂环的基团,其中包括使相应的三尖杉碱碱化合物或其盐,异构体或互变异构体形式,其不含游离形式或其形式为对应于以下通用术语的金属醇盐 式CTXOM,其中CTX表示三尖杉碱骨架,其任选地被取代和/或脱氢,其中M为氢原子或金属原子,与hete 在相对于羧基的α(a)位置上具有带有氢化杂原子的酸的双官能保护(二齿)和活化(酰化)形式的双环侧链前体,并且对应于以下通式:其中 情况W是碳,硫,硅或钻孔原子,X,R1和R2分别具有与上述相同的含义,R1和R2可能一起形成环或杂环,并且Y和Z是烷基或杂烷基 基团或单价杂原子,其可以是相同或不同的,可以独立的方式或可以融合以产生二价杂原子,其中XW键可以是共价键或离子键。