4''-O-[(3-{4-[(2E)-3-(3-carboxy-1-ethyl-4-oxo-1,4-dihydro-6-quinolinyl)-2-propen-1-yl]-1-piperazinyl}propyl)]-9-deoxo-9a-methyl-9a-aza-9a-homoerythromycin A

4''-O-[(3-{4-[3-(3-carboxy-1-ethyl-4-oxo-1,4-dihydro-6-quinolinyl)propyl]-1-piperazinyl}propyl)]-9-deoxo-9a-methyl-9a-aza-9a-homoerythromycin A

6-[3-(5-carboxy-pentyloxy)-propyn-1-yl]-1-ethyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

4''-O-{6-[3-(3-carboxy-1-ethyl-4-oxo-1,4-dihydro-quinolin-6-yl)-propyn-2-yloxy]-hexanoyl}-azithromycin