Linking Bisphosphonates to the Free Amino Groups in Fluoroquinolones: Preparation of Osteotropic Prodrugs for the Prevention of Osteomyelitis
作者:Tom J. Houghton、Kelly S. E. Tanaka、Ting Kang、Evelyne Dietrich、Yanick Lafontaine、Daniel Delorme、Sandra S. Ferreira、Frederic Viens、Francis F. Arhin、Ingrid Sarmiento、Dario Lehoux、Ibtihal Fadhil、Karine Laquerre、Jing Liu、Valérie Ostiguy、Hugo Poirier、Gregory Moeck、Thomas R. Parr、Adel Rafai Far
DOI:10.1021/jm801007z
日期:2008.11.13
Osteomyelitis is an infection located in bone and a notoriously difficult disease to manage, requiring frequent and heavy doses of systemically administered antibiotics. Targeting antibiotics to the bone after systemic administration may provide both greater efficacy of treatment and less frequent administration. By taking advantage, of the affinity of the bisphosphonate group for bone mineral, we have prepared a set of 13 bisphosphonated antibacterial prodrugs based on eight different linkers tethered to the free amino functionality on fluoroquinolone antibiotics. While all but one of the prodrugs were shown in vitro to be effective and rapid bone binders (over 90% in 1 h), only eight of them demonstrated the capacity to significantly regenerate the parent drug. In a rat model of the disease, a selected group of agents demonstrated their ability to prevent osteomyelitis when used in circumstances under which the parent drug had already been cleared and is thus inactive.