申请人:Meiji Seika Kaisha, Ltd.
公开号:US03988326A1
公开(公告)日:1976-10-26
A compound having the formula: ##EQU1## and a 7-amihocephalosporanic acid derivative having the formula: ##SPC1## Are reacted in a homogeneous aqueous solution of the reactants to prepare a reaction of the formula: ##SPC2## In the formulas, R may be H or other defined substituents such as carboxyl group; R.sub.1 is H, an alkyl of 1-4 carbons or other defined substitents; R.sub.2 is H or phenyl or when taken together with R.sub.1 form a defined cyclicradical; R.sub.3 is H or other defined substituents and M is an alkali metal cation, ammonium cation or H.
分子式为:##EQU1##和分子式为:##SPC1##的7-氨基头孢菌素酸衍生物,在反应物的均相水溶液中反应,制备出分子式为:##SPC2##的反应物。在公式中,R可以是氢或其他定义的取代基,如羧基;R.sub.1是氢,1-4个碳的烷基或其他定义的取代基;R.sub.2是氢或苯基,或者与R.sub.1一起形成定义的环状基团;R.sub.3是氢或其他定义的取代基,M是碱金属阳离子、铵阳离子或氢。