The present invention is directed to a process for the displacement of the acetoxy group of a cephalosporanic acid by a sulfur nucleophile, in an organic solvent and under essentially anhydrous conditions.
本发明涉及一种在有机溶剂和基本无水条件下,通过硫亲核试剂取代头孢菌酸中的乙酰氧基的过程。
Azetidinone antibiotics. XIV. Removal of a phthaloyl protective group from acid and base sensitive compounds