申请人:Eli Lilly and Company
公开号:US04012380A1
公开(公告)日:1977-03-15
Intermediate C-3 1-hydroxyalkyl or 1-hydroxyarylalkyl cephems, prepared by reacting Grignard reagents at low temperature with 3-formyl-2-cephem compounds, are oxidized to the corresponding 7-acylamino-3-acyl-2(or 3)cephem-4-carboxylic acids and esters thereof, which are useful as antibiotics or as intermediates in preparing antibiotic substances.
通过在低温下用格氏试剂与3-甲醛-2-头孢烯化合物反应制备的中间体C-3 1-羟基烷基或1-羟基芳基烷基头孢菌素,被氧化为相应的7-酰氨基-3-酰基-2(或3)头孢烯-4-羧酸及其酯,可用作抗生素或用于制备抗生素物质的中间体。