摘要:
A β-lactam compound and a 2-(substituted methyl)-3-cephem compound, both being useful as an intermediate for the synthesis of cephem antibiotics and so forth. The lactam compound is represented by general formula (I), wherein R¹ represents protected amino, etc.; R² represents hydrogen, etc.; R³ represents hydrogen or a protective group for a carboxyl group; R⁴ represents optionally substituted aryl; and R⁵ represents optionally substituted alkenyl, etc. The cephem compound is represented by general formula (II), wherein R¹, R² and R³ are each as defined above; and R⁶ represents optionally substituted aryl.
摘要翻译:β-内酰胺化合物和2-(取代的甲基)-3-头孢烯化合物都可用作合成头孢烯抗生素等的中间体。 内酰胺化合物由通式(I)表示,其中R 1表示被保护的氨基等; R 2表示氢等; R 3表示氢或羧基的保护基; R 4表示任选取代的芳基; 并且R 5表示任选取代的烯基等。头孢烯化合物由通式(II)表示,其中R 1,R 2和R 3各自如上所定义; 且R 6表示任选取代的芳基。