| 摘要 |
Cephalosporin compounds represented by general formula (I) or their salts, a process for their preparation, and antibacterial agents containing them as active ingredients, wherein Y represents an optionally protected amino group; Z represents a hydrogen atom, a methoxy group or a formamino group; R<1> represents an optionally substituted alkyl group or a hydrogen atom; R<2> and R<3>, which may be the same or different, each represents a hydrogen atom or a hydroxy group protecting group; W represents a substituent; and n represents an integer of 0 to 5. |
