tuted benzyl)-N'-arylurea and related derivatives represented by 2 and 3 have been prepared and evaluated for their ability to inhibit acyl-CoA:cholesterol O-acyltransferase in vitro and to lower plasma cholesterol levels in cholesterol-fed rats in vivo. Among these novel compounds, the type 3 series was superior. A pyrazol-3-yl group on the N-benzyl group of this trisubstituted urea (i.e. 3, Ar1 =
制备了一系列N-烷基-N-(杂芳基取代的苄基)-N'-芳基
脲和相关的衍
生物(用2和3表示),并对其在体外和体外抑制酰基
辅酶A:
胆固醇O-酰基转移酶的能力进行了评估。降低体内
胆固醇喂养大鼠的血浆
胆固醇水平。在这些新型化合物中,3型系列更为出色。该三取代
脲的N-苄基上的
吡唑-3-基(即3,Ar1 =
吡唑-3-基)被鉴定为杂芳环,提供了良好的
生物活性。通过优化与N-烷基(R)和N-芳基(Ar3)的组合的结果,化合物3aq(FR186054)被确定为一种新型的口服有效ACAT
抑制剂,在
胆固醇喂养的大鼠中表现出有效的体外ACAT抑制活性(兔子肠道微粒体IC50 = 99 nM)和出色的降
胆固醇作用,而与给药方式无关(ED50 = 0.046 mg / kg,通过饮食给药,ED50 = 0. 44 mg /通过在P
EG400载体中的管饲法施用1kg)。此外,一项毒理学研究表明,以10 mg / kg