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    • 35. 发明授权
    • Process for the preparation of reactive penicillanic acid and
cephalosporanic acid derivatives
    • 反应性青霉烷酸和头孢烷酸衍生物的制备方法
    • US4171303A
    • 1979-10-16
    • US812735
    • 1977-07-05
    • Magda HuhnGabor SzaboGabor ResofszkiEva Somfai
    • Magda HuhnGabor SzaboGabor ResofszkiEva Somfai
    • C07D499/00C07D499/72C07D501/06C07D499/04C07D501/04
    • C07D499/00
    • This invention relates to a process for the preparation of acid amides having the formula (I) or their salts ##STR1## wherein R.sup.1 is hydrogen or an easily removable ester-forming or salt-forming group, preferably a trialkylamino, trialkylsilyl, trichloroethyl, acetoxymethyl, phenacyl, substituted phenacyl, substituted phenyl or benzyl group,R.sup.2 is hydrogen, alkyl group, alkenyl group, alkyl group having an aryl or heterocyclic (preferably furyl or thienyl)-substituent, an aryl group having an alkyl substituent (preferably xylyl), or an aryl, aralkyl or heterocyclic group, (preferably a phenyl, thienyl, or furyl group) which can have one or more substituents,R.sup.3 is hydrogen, or substituted or unsubstituted aryl, alkyl, cycloalkyl or aralkyl group, andX is a group of one of the formulae ##STR2## according to the invention an amine of the formula (II), ##STR3## wherein R.sup.4 is an easily removable ester-forming group, preferably a trialkylamino, trialkylsilyl, trichloroethyl, acetoxymethyl, phenacyl, substituted phenacyl, substituted phenyl or benzyl group, or a salt formed preferably with an alkali metal or a trialkylamine, is acylated with an ester of the formula (III), ##STR4## wherein R.sup.5 is a substituted or unsubstituted aryl, alkyl, cycloalkyl or aralkyl group, and, if desired, substituents R.sup.4 and/or R.sup.5 of the obtained product can be split off, and/or, if desired, the obtained product is converted into its salt or a salt is converted into the free acid.
    • 本发明涉及一种制备具有式(I)的酸酰胺或其盐(I)的方法,其中R 1是氢或易于除去的形成酯或成盐基团,优选三烷基氨基,三烷基甲硅烷基, 三氯乙基,乙酰氧基甲基,苯甲酰甲基,取代的苯甲酰甲基,取代的苯基或苄基,R2是氢,烷基,烯基,具有芳基或杂环(优选呋喃基或噻吩基) - 取代基的烷基,具有烷基取代基的芳基 二甲苯基)或可具有一个或多个取代基的芳基,芳烷基或杂环基(优选苯基,噻吩基或呋喃基),R 3为氢或取代或未取代的芳基,烷基,环烷基或芳烷基,X 是根据本发明的一种式(II)的式(II)的胺,其中R 4是易于除去的成酯基团,优选三烷基氨基,三烷基甲硅烷基,三氯乙基,乙酰氧基 取代的苯甲酰甲基,取代的苯基或苄基,或优选与碱金属或三烷基胺形成的盐,用式(III)的酯,其中R5是取代或 未取代的芳基,烷基,环烷基或芳烷基,并且如果需要,所得产物的取代基R 4和/或R 5可以被分离,和/或如果需要,将得到的产物转化为其盐或盐被转化 进入游离酸。