Beta-lactam compound, process for preparing the same, intermediate for synthesis of the same and medicinal composition for bacterially infectious disease therapy containing the same

摘要

There are disclosed a β-lactam compound represented by the formula (I):wherein R, represents an acyl group; M represents a hydrogen atom, a protective group or an eliminatable group which is easily hydrolyzable in a human body; B represents a group represented by the formula (b):where at least one of R₂, R₃ and R₉ represent a group represented by the formula: -A-OR₄ where R₄ represents a hydrogen or a lower alkyl group; and A represents a straight or branced alkylene group having 1 to 6 carbon atoms; and a remaining group or groups are each independently a hydrogen atom; a cyano group; a lower alkyl group which may be substituted by a halogen atom; a carbamoyl group which may be substituted by a lower alkyl group; a cycloalkyl group; or a carboxyl group which may be substituted by a protective group or an eliminatable group which is easily hydrolyzable in a human body, and also when Rg is -A-OR₄, R₂ and R₃ may be combined with each other to form an alkylene group having 3 to 4 carbon atoms; and Z represents a nitrogen atom or a group represented by the formula: C-R₁₀ where Rio represents a hydrogen atom, a carboxyl group or a lower alkyl group which may be substituted by a hydroxy group or a lower alkoxy group,or its pharmaceutically acceptable salt, and a process for preparing the same, an intermediate for synthesis of the same and a medicinal composition for bacterially infectious disease therapy containing the same.