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    • 3. 发明授权
    • Method for production of cephalosporin compounds
    • 生产头孢菌素化合物的方法
    • US4980464A
    • 1990-12-25
    • US373594
    • 1989-06-30
    • Kenzo NaitoYukio Ishibashi
    • Kenzo NaitoYukio Ishibashi
    • A61K31/545A61K31/546A61P31/04C07D501/04C07D501/18C07D501/20C07D501/24C07D501/26C07D501/46C07D519/06C07F7/10
    • C07D501/20C07D501/04C07D501/18C07D501/46Y02P20/55
    • A method for producing a compound of the formula; ##STR1## wherein R stands for a hydrogen atom, an acyl group or a protective group other than acyl groups, Q stands for a hydrogen atom or an ester residue, Y stands for the residue of a nucleophilic compound and the dotted line shows the double bond at 2- or 3- position of the cephem ring or a salt thereof, characterized by allowing a compound of the formula; ##STR2## [R, Q and the dotted line are of the same meaning as above] or a salt thereof to react with a nucleophilic compound or a salt thereof and a compound of the formula; ##STR3## wherein R.sup.1, R.sup.2, R.sup.3 independently stand for a hydrocarbon group having not more than 8 carbon atoms, or R.sup.1 and R.sup.2, R.sup.1 and R.sup.3 or R.sup.2 and R.sup.3 may be combined to form polymethylene group, according to which the end product [I] of high quality can be provided in a high yield by one reaction step by using the compound [III] of relatively low cost, thus the method of this invention is advantageous for mass-producing the compound [I] on an industrial scale from the compound [II] and a nucleophilic compound.
    • 一种制备式的化合物的方法; 其中R表示氢原子,酰基或除酰基以外的保护基,Q表示氢原子或酯残基,Y表示亲核性化合物的残基,虚线表示 表示头孢烯环的2-或3-位上的双键或其盐,其特征在于允许下式的化合物: [II] [R,Q和虚线具有与上述相同的含义]或其盐与亲核化合物或其盐和下式化合物反应; 其中R 1,R 2,R 3独立地表示不多于8个碳原子的烃基,或者R 1和R 2,R 1和R 3或R 2和R 3可以组合形成多亚甲基,其中 通过使用相对低成本的化合物[III],可以通过一次反应步骤以高产率提供高质量的最终产物[I],因此本发明的方法有利于大量生产化合物[I] 化合物[II]和亲核化合物的工业规模。