Syntheses and pharmacokinetic evaluations of four metabolites of 2-(4-(2-((1H-benzo[d]imidazol-2-yl)thio)ethyl)piperazin-1-yl)-N-(6-methyl-2,4-bis-(methylthio)pyridin-3-yl)acetamide hydrochloride [K-604], an acyl-CoA:cholesterol O-acyltransferase-1 inhibitor
摘要:
We synthesized and identified four metabolites of acyl-coenzyme A:cholesterol O-acyltransferase (ACAT)-1 inhibitor, K-604 (1). Two of the metabolites M1 and M2, were prepared from 1 using a combination reagent of hydrogen peroxide and sodium tungstate with either phosphoric acid or trifluoroethanol as the solvent to control the regioselectivity. Upon exposure of 4b to tert-butyl hypochlorite at -78 degrees C, the monosulfoxidation afforded synthetic intermediate of M3 in excellent yield. The efficient synthesis of M4 was established. The in vitro metabolic study exhibited a high clearance value (720 mu L/min/mg protein) of 1 using human liver microsomes. We orally administered a single dose of 10 mg/kg of 1 to monkeys because the in vitro metabolic patterns are quite similar. Fortunately, the drug concentration of 1 was much higher than those of M1, M2, M3 and M4.
Process for production of cyclic diamine compounds or salts thereof
申请人:Shibuya Kimiyuki
公开号:US20050032814A1
公开(公告)日:2005-02-10
The present invention is directed to a process for producing cyclic diamine compounds (4) or salts or intermediates thereof according to the following reaction scheme:
(wherein R is a protective group and Ar is an optionally substituted aryl group). According to the present invention, the cyclic diamine compounds (4) useful as drugs or salts or intermediates thereof can be produced at high levels of yield and purity in terms of industrially advantageous productivity.
Process for production of 1-[2-(benzimidazol-2-yl- thio)ethy]piperazine or salts thereof
申请人:Shibuya Kimiyuki
公开号:US20060035906A1
公开(公告)日:2006-02-16
This invention relates to a method for producing 1-[2-(benzimidazol-2-ylthio)ethyl]piperadine (5) or its salt by the following reaction scheme:
This invention enables efficient production of 1-[2-(benzimidazol-2-ylthio) ethyl]piperadine or its salt which is an intermediate in the production of a cyclic diamine compound which is useful as a ACAT inhibitor.
Process for production of 1-[2-(benzimidazol-2-yl-thio)ethyl]piperazine or salts thereof
申请人:Kowa Co., Ltd.
公开号:US07214796B2
公开(公告)日:2007-05-08
This invention relates to a method for producing 1-[2-(benzimidazol-2-ylthio)ethyl]piperazine (5) or its salt by the following reaction scheme:
This invention enables efficient production of 1-[2-(benzimidazol-2-ylthio) ethyl]piperazine or its salt which is an intermediate in the production of a cyclic diamine compound which is useful as a ACAT inhibitor.
PROCESS FOR PRODUCTION OF 1- 2-(BENZIMIDAZOL-2-YL- THIO)ETHYL ]PIPERAZINE OR SALTS THEREOF
申请人:Kowa Co., Ltd.
公开号:EP1566381A1
公开(公告)日:2005-08-24
This invention relates to a method for producing 1-[2-(benzimidazol-2-ylthio)ethyl]piperadine (5) or its salt by the following reaction scheme:
This invention enables efficient production of 1-[2-(benzimidazol-2-ylthio)ethyl]piperadine or its salt which is an intermediate in the production of a cyclic diamine compound which is useful as a ACAT inhibitor.