Synthesis and Evaluation of Compounds That Facilitate the Gastrointestinal Absorption of Heparin
作者:Andrea Leone-Bay、Duncan R. Paton、John Freeman、Christine Lercara、Doris O'Toole、David Gschneidner、Eric Wang、Elizabeth Harris、Connie Rosado、Theresa Rivera、Aldonna DeVincent、Monica Tai、Frank Mercogliano、Rajesh Agarwal、Harry Leipold、Robert A. Baughman
DOI:10.1021/jm970811m
日期:1998.3.1
A family of novel compounds (delivery agents) that promote the gastrointestinal absorption of USP heparin in rats and primates has been discovered. The delivery agents in combination with heparin were administered either orally or intracolonically in an aqueous propylene glycol solution and caused dramatic increases in both plasma heparin concentrations (anti-Factor Xa) and clotting times (APTT). Using one of the most effective delivery agents in this series, an estimated relative bioavailability of 8% can be achieved following oral administration to cynomolgus monkeys. To establish a correlation between the in vivo data and an in vitro parameter, immobilized artificial membrane (IAM) chromatography was performed. Log relative k' values were correlated to the efficiency of oral heparin delivery.