申请人:Bayer Aktiengesellschaft
公开号:US03936447A1
公开(公告)日:1976-02-03
7-Acylamino-desacetoxy-cephalosporanic acid esters are produced by heating a sulfoxide of 6-acylaminopenicillanic acid ester at a temperature of from about 60.degree.C to about 150.degree.C in the presence of a phenol catalyst. The 7-acylamino-desacetoxy-cephalosporanic acid esters produced are known per se and are useful as intermediates for the preparation of desacetoxy-cephalosporin derivatives which exhibit antibacterial activity.
7-酰胺基去乙酰氧头孢烷酸酯通过在苯酚催化剂的存在下,在约60°C至约150°C的温度下加热6-酰胺基青霉烷酸酯的亚砜,制备而成。制得的7-酰胺基去乙酰氧头孢烷酸酯本身已知,并且可用作制备表现出抗菌活性的去乙酰氧头孢菌素衍生物的中间体。