N refers to the antibacterial compound of F amp; oacute; rmula I refers to one of the groups of Ma, MB and MC; rmula I refers to the groups of Ma, MB and MC, and the following is the group of Ma MB MC, where R1, Ma, MB and MC groups are defined and amp; oacute; descriptive memory; and its salts; lt; / P gt;<;p>;La invenció;n se refiere a compuestos antibacterianos de fó;rmula I I donde M es uno de los grupos MA, MB y MC que se representa debajo MA MB MC donde R1, MA, MB y MC son tal como se definió; en la memoria descriptiva; y a sus sales.<;/p>;