Studies on prodrugs. IV. Preparation and characterization of N-(5-substituted 2-oxo-1,3-dioxol-4-yl)methyl norfloxacin.
作者:FUMIO SAKAMOTO、SHOJI IKEDA、HIROSATO KONDO、GORO TSUKAMOTO
DOI:10.1248/cpb.33.4870
日期:——
As a new type of norfloxacin (NFLX) prodrug, N-(5-substituted 2-oxo-1, 3-dioxol-4-yl) methyl NFLXs were designed. These N-masked NFLXs were prepared and confirmed to produce higher NFLX levels in blood than NFLX itself after oral administration to mice. N-(5-Methyl-2-oxo-1, 3-dioxol-4-yl) methyl NFLX was found to be smoothly hydrolyzed in mouse blood in vitro, and when administered orally, gave about 5-fold higher blood levels of NFLX than NFLX itself. Thus, the (5-methyl-2-oxo-1, 3-dioxol-4-yl) methyl group was confirmed to function as an amine-type promoiety.
作为一种新型的诺氟沙星(NFLX)前药,设计了N-(5-取代的2-氧代-1,3-二噁烷-4-基)甲基NFLX。这些N掩蔽的NFLX被制备并确认在口服给药给小鼠后,其血液中的NFLX水平高于NFLX本身。研究发现,N-(5-甲基-2-氧代-1,3-二噁烷-4-基)甲基NFLX在小鼠血液中体外平稳水解,口服给药后,NFLX的血液水平约为NFLX本身的5倍。因此,(5-甲基-2-氧代-1,3-二噁烷-4-基)甲基基团被确认具有胺型促活基的功能。