Development of absorption furosemide prodrugs: synthesis, in vitro and in vivo evaluation
Prandi, C.; Fagiolino, P.; Manta, E.; Llera, L.D.; Aiache, J.M.; Couquelet, J.
Farmaco 47(2): 249-263
1992
ISSN/ISBN: 0014-827X PMID: 1510797 Document Number: 391189
Six acyloxymethyl esters of Furosemide were synthesized and the structures were determined by chemical and spectroscopic methods. Lipophilicity parameters were analysed by high performance liquid chromatography (HPLC). Hydrolysis performances in human plasma and intestinal fluids anticipate their properties as absorption prodrugs of Furosemide. A bioavailability study carried out with 8 male Wistar rats with one of the synthesized prodrug (acetyloxymethyl 4-chloro-N-furfuryl-5-sulfamoylanthranilate) showed a greater absorption in relation to Furosemide. The percentages of mean urinary recovery of Furosemide for the prodrug and for the standard solution of the drug were 20.84 and 14.36 respectively. The doses were 10 mg/Kg in Furosemide. The analytical determinations of Furosemide in biological fluids were done by HPLC.