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    • 3. 发明申请
    • PROCESS FOR PREPARING CEPHALOTAXINE ESTERS
    • 制备西酞菁酯的方法
    • WO2010103405A2
    • 2010-09-16
    • PCT/IB2010/000835
    • 2010-03-11
    • ROBIN, Jean-PierreRADOSEVIC, NinaBLANCHARD, Julie
    • ROBIN, Jean-PierreRADOSEVIC, NinaBLANCHARD, Julie
    • 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(R 1 ) (R 2 ) (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, R 1 and R 2 , 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 (α) 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, R 1 and R 2 have respectively the same meaning as above, it being possible for R 1 and R 2 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.
    • 一种制备对应于以下通式I的头孢噻肟酯的方法,其包含头孢噻肟主链:C(R 1)(R 2)(X H)COO [CTX],其中CTX代表头孢噻肟主链任选被取代和/或脱氢,其中 式I,X是杂原子,优选氧,硫或氮,R 1和R 2分别独立地可以是烷基,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,其包括使相应的头孢噻肟化合物或其盐,异构体或互变异构体形式,其为与下列一般相对应的金属醇盐形式, 式CTXOM,其中CTX代表头孢噻肟骨架,任选地被取代和/或脱氢,其中M是氢原子或金属原子与一个连接体接触 在相对于羧基的α(a)位上具有双功能保护(二齿)和活化(酰化)形式的含有氢化杂原子的酸的环状侧链前体,并且对应于以下通式:其中 情况W是碳,硫,硅或孔原子,X,R 1和R 2分别具有与上述相同的含义,R 1和R 2可以一起形成环或杂环,Y和Z是烷基或杂烷基 基团或单价杂原子,其可以相同或不同,以独立的方式,或可以融合以产生二价杂原子,XW键可以是共价键或离子型。