Discovery of Potent, Nonsystemic Apical Sodium-Codependent Bile Acid Transporter Inhibitors (Part 1)
摘要:
Elevated plasma levels of low-density lipoprotein (LDL) cholesterol are a major risk factor for atherosclerosis leading to coronary artery disease (CAD), which remains the main cause of mortality in Western society. We believe that by preventing the reabsorption of bile acids, a minimally absorbed apical sodium-codependent bile acid transporter (ASBT) inhibitor would lower the serum cholesterol without the potential systemic side effects of an absorbed drug. A series of novel benzothiepines (3R,3R'-2,3,4,5-tetrahydro-5-aryl-l-benzothiepin-4-ol 1,1-dioxides) were synthesized and tested for their ability to inhibit the apical sodium dependent bile acid transport (ASBT)-mediated uptake of [C-14]taurocholate (TC) in H14 cells. A 3R,4.R,5R13S,4S,5S racemate was found to have greater potency than the other three possible racemates. Addition of electron-donating groups such as a dimethylamino substituent at the 7 position greatly enhanced potency, and incorporation of a long-chain quaternary ammonium substituent on the 5-phenyl ring was useful in minimizing systemic exposure of this locally active ASBT inhibitor while also increasing water solubility and maintaining potency. The reported results describe the synthesis and SAR development of this benzothiepine class of ASBT inhibitors resulting in an 6000-fold improvement in ASBT inhibition with desired minimal systemic exposure of this locally acting drug candidate.
Discovery of Potent, Nonsystemic Apical Sodium-Codependent Bile Acid Transporter Inhibitors (Part 1)
摘要:
Elevated plasma levels of low-density lipoprotein (LDL) cholesterol are a major risk factor for atherosclerosis leading to coronary artery disease (CAD), which remains the main cause of mortality in Western society. We believe that by preventing the reabsorption of bile acids, a minimally absorbed apical sodium-codependent bile acid transporter (ASBT) inhibitor would lower the serum cholesterol without the potential systemic side effects of an absorbed drug. A series of novel benzothiepines (3R,3R'-2,3,4,5-tetrahydro-5-aryl-l-benzothiepin-4-ol 1,1-dioxides) were synthesized and tested for their ability to inhibit the apical sodium dependent bile acid transport (ASBT)-mediated uptake of [C-14]taurocholate (TC) in H14 cells. A 3R,4.R,5R13S,4S,5S racemate was found to have greater potency than the other three possible racemates. Addition of electron-donating groups such as a dimethylamino substituent at the 7 position greatly enhanced potency, and incorporation of a long-chain quaternary ammonium substituent on the 5-phenyl ring was useful in minimizing systemic exposure of this locally active ASBT inhibitor while also increasing water solubility and maintaining potency. The reported results describe the synthesis and SAR development of this benzothiepine class of ASBT inhibitors resulting in an 6000-fold improvement in ASBT inhibition with desired minimal systemic exposure of this locally acting drug candidate.
Novel benzothiepines having activity as inhibitors of ileal bile acid transport and taurocholate uptake
申请人:G.D. Searle & Co.
公开号:US20020013476A1
公开(公告)日:2002-01-31
Provided are novel benzothiepines, derivatives, and analogs thereof; pharmaceutical compositions containing them; and methods of using these compounds and compositions in medicine, particularly in the prophylaxis and treatment of hyperlipidemic conditions such as those associated with atherosclerosis or hypercholesterolemia, in mammals.
Novel benzothiepines having activity as inhibitors of lleal bile acid transport and taurocholate uptake
申请人:G.D. Searle & Co.
公开号:US20040014803A1
公开(公告)日:2004-01-22
Provided are novel benzothiepines, derivatives, and analogs thereof; pharmaceutical compositions containing them; and methods of using these compounds and compositions in medicine, particularly in the prophylaxis and treatment of hyperlipidemic conditions such as those associated with atherosclerosis or hypercholesterolemia, in mammals.
Novel mono- and di-fluorinated benzothiepine compouds as inhibitors of apical sodium co-dependent bile acid transport (ASBT) and taurocholate uptake
申请人:G.D. SEARLE, LLC
公开号:US20040067872A1
公开(公告)日:2004-04-08
Mono-fluorinated and di-fluorinated benzothiepine apical sodium co-dependent bile acid transport (ASBT) inhibitors are disclosed together with methods of making the same, methods of using the same to treat hyperlipidemic conditions as well as pharmaceutical compositions containing the same compounds.
Combination therapy employing ileal bile acid transport inhibiting benzothiepiens and HMG Co-A reductase inhibitors
申请人:G.D. Searle & Co.
公开号:US20030171426A1
公开(公告)日:2003-09-11
Provided are novel benzothiepines, derivatives, and analogs thereof; pharmaceutical compositions containing them; and methods of using these compounds and compositions in medicine, particularly in the prophylaxis and treatment of hyperlipidemic conditions such as those associated with atherosclerosis or hypercholesterolemia, in mammals. Also provided are compositions and methods for combination therapy employing ileal bile acid transport inhibitors and HMG Co-A reductase inhibitors for the treatment of hyperlipidemic conditions.
Combination therapy employing ileal bile acid transport inhibiting benzothiepines and HMG Co-A reductase inhibitors
申请人:G.D. Searle & Co.
公开号:US20040157915A1
公开(公告)日:2004-08-12
Provided are novel benzothiepines, derivatives, and analogs thereof; pharmaceutical compositions containing them; and methods of using these compounds and compositions in medicine, particularly in the prophylaxis and treatment of hyperlipidemic conditions such as those associated with atherosclerosis or hypercholesterolemia, in mammals. Also provided are compositions and methods for combination therapy employing ileal bile acid transport inhibitors and HMG Co-A reductase inhibitors for the treatment of hyperlipidemic conditions.