Dioxo piperazine compounds
    1.
    发明授权
    Dioxo piperazine compounds 失效
    二氧代哌嗪化合物

    公开(公告)号:US4316024A

    公开(公告)日:1982-02-16

    申请号:US187273

    申请日:1980-09-15

    CPC分类号: C07D487/04

    摘要: Certain cephalosporins having a heterocyclicthiomethyl group at the 3-position such as cefoperazone are prepared by reacting a solution of a 7-acylamidocephalosporanic acid having a free amino group as part of said acyl substituent with about an equi-molar amount of the thiolester ##STR1## wherein --S-Het is the desired conventional heterocyclicthio group which displaces the 3-acetoxy group of the starting acid and ##STR2## is the conventional acyl group which displaces a hydrogen on the free amino group which is part of the acyl substituent of the starting 7-acylamidocephalosporanic acid.

    摘要翻译: 通过使具有游离氨基的7-酰基酰氨基头孢烷酸作为所述酰基取代基的一部分的溶液与约等摩尔量的硫羟酸酯反应来制备具有3-位杂环硫代甲基的头孢菌素,例如头孢哌酮。 其中-S-Het是取代起始酸的3-乙酰氧基的所需的常规杂环硫基,并且“IMAGE”是将作为起始的酰基取代基的一部分的游离氨基上的氢取代的常规酰基 7-酰基酰氨基头孢烷酸。