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公开(公告)号:US5416208A
公开(公告)日:1995-05-16
申请号:US199963
申请日:1994-02-22
IPC分类号: C07D317/40 , C07D499/88 , A61K31/425 , C07D499/00
CPC分类号: C07D317/40 , C07D499/88 , Y02P20/55
摘要: Antibacterial penems of formula (I), where R represents a hydrogen atom or a hydroxy protecting group, are prepared by reacting a .beta.-lactam of formula (II) with an oxalyl halide in an inert solvent in the presence of an organic or inorganic base or an acid scavenger to produce a compound of formula (III), wherein X is a halogen atom, treating the resultant compound of formula (III) with a 1,3-dioxolen-2-one of formula (IV), wherein Y is a hydroxy group, in the presence of molecular sieves or an organic or inorganic base to produce a compound of formula (V), and cyclizing the compound of formula (V) in the presence of a trialkylphosphite to provide the penems of formula (I).
摘要翻译: 通过在有机或无机碱的存在下,在惰性溶剂中使式(II)的β-内酰胺与草酰卤反应来制备式(I)的抗菌青霉烯,其中R表示氢原子或羟基保护基 或酸清除剂,以制备其中X为卤素原子的式(III)化合物,用式(IV)的1,3-二氧戊环-2-酮处理所得的式(III)化合物,其中Y为 在分子筛或有机或无机碱存在下制备式(V)化合物的羟基,并且在亚烷基三烷基膦存在下使式(Ⅴ)化合物环化以提供式(I)的pen) 。
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公开(公告)号:US4952577A
公开(公告)日:1990-08-28
申请号:US202542
申请日:1988-06-06
申请人: Marco Alpegiani , Giovanni Franceschi , Ettore Perrone , Franco Zarini , Constantino Della Bruna
发明人: Marco Alpegiani , Giovanni Franceschi , Ettore Perrone , Franco Zarini , Constantino Della Bruna
IPC分类号: C07D499/897 , A61K31/43 , A61P31/04 , C07D499/06 , C07D499/88 , C07D499/883
CPC分类号: C07D499/88
摘要: A substantially (.gtoreq.95%) optically pure (5R,6S,1'R) penem of formula ##STR1## and the pharmaceutically acceptable salts and the ester prodrugs thereof, are endowed with antibacterial activity.
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