Synthesis and Structure-Activity Relationships of 7-(2-Aminoalkyl)morpholinoquinolones as anti-Helicobacter pylori Agents.

A series of the titled compounds was synthesized and tested for anti- Helicobacter pylori activities. We discovered Y-34867 having the most potent activity against Helicobacter pylori among the quinolones tested along with high photostability. Furthermore, Y-34867 showed an excellent therapeutic effect in the experimental Helicobacter pylori infected Mongolian gerbil model.