Optimization of Sphingosine-1-phosphate-1 Receptor Agonists: Effects of Acidic, Basic, and Zwitterionic Chemotypes on Pharmacokinetic and Pharmacodynamic Profiles
摘要:
The efficacy of the recently approved drug fingolimod (FTY720) in multiple sclerosis patients results from the action of its phosphate metabolite on sphingosine-1-phosphate S1P(1) receptors, while a variety of side effects have been ascribed to its S1P(3) receptor activity. Although S1P and phospho-fingolimod share the same structural elements of a zwitterionic headgroup and lipophilic tail, a variety of chemotypes have been found to show S1P(1) receptor agonism. Here we describe a study of the tolerance of the S1P(1) and S1P(3) receptors toward bicyclic heterocycles of systematically varied shape and connectivity incorporating acidic, basic, or zwitterionic headgroups. We compare their physicochemical properties, their performance in in vitro and in vivo pharmacokinetic models, and their efficacy in peripheral lymphocyte lowering. The campaign resulted in the identification of several potent S1P(1) receptor agonists with good selectivity vs S1P(3) receptors, efficacy at <1 mg/kg oral doses, and developability properties suitable for progression into preclinical development.
AROMATIC ETHER DERIVATIVES USEFUL AS THROMBIN INHIBITORS
申请人:Argade Ankush Baburao
公开号:US20090227566A1
公开(公告)日:2009-09-10
This application relates to a compound of formula (I) (or a pharmaceutically acceptable salt of the compound or prodrug thereof) as defined herein, pharmaceutical compositions thereof, and its use as an inhibitor of factor Xa and/or thrombin, as well as a process for its preparation and intermediates therefor. An example of a compound of formula (I) is (a).
This application relates to a compound of formula I (or a pharmaceutically acceptable salt of the compound) as defined herein, pharmaceutical compositions thereof, and its use as an inhibitor of factor Xa and/or thrombin, as well as a process for its preparation and intermediates therefor.
This application relates to a compound of formula (I) (or a pharmaceutically acceptable salt of the compound) as defined herein, pharmaceutical compositions thereof, and its use as an inhibitor of factor Xa and/or thrombin, as well as a process for its preparation and intermediates therefor.