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    • 6. 发明申请
    • PREPARATION OF beta -LACTAM ANTIBIOTICS IN THE PRESENCE OF UREA OR AMIDE
    • 在尿素或其他药物存在下制备β-LACTAM抗生素
    • WO99055709A1
    • 1999-11-04
    • PCT/NL1999/000247
    • 1999-04-27
    • C07D499/00C07D499/12C07D501/00C07D501/06
    • C07D501/00C07D499/00
    • A process to prepare a crystalline beta -lactam compound by the addition of a base to an acidic solution of a beta -lactam compound obtained by the addition of an acid to a solution or suspension of a beta -lactam compound obtained by (a) an acylation reaction of 6-amino-penicillanic acid, 7-amino-cephalosporanic acid, 7-amino-3'-desacetoxycephalosporanic acid or 3-chloro-7-aminodesacetoxydesmethylcephalosporanic acid or derivatives thereof with a mixed-anhydride of the Dane salt of any one of the compound comprising D-phenyl-glycine, D-p-hydroxyphenyl-glycine, D-2(1,4-cyclohexadien-1-yl)glycine or (2-aminothiazol-4-yl)-(2-methoxy-imino-acetic acid) in one or more organic solvents, or (b) dissolving or suspending a crude beta -lactam compound in a solution comprising water and/or one or more organic solvents, wherein, to the solution or suspension of a beta -lactam compound, urea or derivatives thereof and/or amide or derivatives thereof are added.
    • 通过向通过(a)得到的β-内酰胺化合物的溶液或悬浮液中加入通过将酸加成获得的β-内酰胺化合物的酸性溶液中加入碱来制备结晶β-内酰胺化合物的方法 6-氨基 - 青霉烷酸,7-氨基 - 头孢烷酸,7-氨基-3'-脱乙酰氧基头孢烷酸或3-氯-7-氨基脱乙酸基甲基头孢烷酸或其衍生物与任何一种的丹烷盐的混合酐的酰化反应 包括D-苯基 - 甘氨酸,Dp-羟基苯基 - 甘氨酸,D-2(1,4-环己二烯-1-基)甘氨酸或(2-氨基噻唑-4-基) - (2-甲氧基 - 亚氨基 - 乙酸 酸),或(b)将粗制β-内酰胺化合物溶解或悬浮在包含水和/或一种或多种有机溶剂的溶液中,其中向β-内酰胺化合物的溶液或悬浮液中, 加入脲或其衍生物和/或其酰胺或其衍生物。