Oxazolidinone derivatives containing new bicyclic group, having antibacterial activity, and method for treating pathogenic bacterial infections using the same

An oxazolidinone derivative containing a cyclopenta[c]pyrrolylphenyl group, and represented by the following Chemical Formula 1, or a pharmaceutically acceptable salt thereof:

• wherein,
• X is acetamido (-NHAc) group or 1H-1,2,3-triazol-1-yl group,
• when X is acetamido (-NHAc) group,
• Y is
• Z is nitrogen or carbon,
• when Z is nitrogen, R1 is cyano group (—CN), and when Z is carbon, R1 is hydroxyl group (—OH), C1-C7 alkyloxy group, benzyloxy group, or cyano group (—CN), and
• R2 is cyano group or cyanomethyl group;
• and
• when X is 1H-1,2,3-triazol-1-yl group,
• Y is
• Z is nitrogen or carbon,
• R1 is hydroxyl group (—OH), C1-C7 alkyloxy group, benzyloxy group, cyano group (—CN), or C1-C7 alkyloxycarbonyl group, and
• R2 is cyano group or cyanomethyl group.