β-D-Glucosyl Conjugates of Highly Potent Inhibitors of Blood Coagulation Factor Xa Bearing 2-Chorothiophene as a P1 Motif
作者:Gianfranco Lopopolo、Modesto de Candia、Luigi Panza、Maria Rosaria Romano、Marcello Diego Lograno、Francesco Campagna、Cosimo Altomare
DOI:10.1002/cmdc.201200224
日期:2012.9
synthesized a novel O‐glucoside of the recently reported potent factor Xa (fXa) inhibitor 1, which bears a 5‐chlorothien‐2‐yl moiety and 1‐isopropylpiperidine as fragments that bind the S1 and S4 enzyme pockets, respectively. A β‐D‐glucosyl unit was conjugated through an ether‐linked C3‐alkyl spacer to the central phenyl ring of 1. The synthesized β‐D‐glucose‐based compound 16 achieved picomolar inhibitory
我们合成了最近报道的强效因子Xa(fXa)抑制剂1的新型O-葡萄糖苷,该抑制剂具有5-氯噻吩-2-基部分和1-异丙基哌啶,分别作为结合S1和S4酶口袋的片段。β- D-葡萄糖基单元通过醚连接的C3-烷基间隔基与1的中心苯环共轭。合成的基于β- D-葡萄糖的化合物16对人fXa的皮摩尔抑制能力(K i = 60 p M)和对凝血酶和其他丝氨酸蛋白酶的高选择性。除了氯噻吩基S1粘合剂外,ΔG的增益也很大起因于加入质子化1-异丙基哌(ΔΔ ģ = 29.7-30.5摩尔千焦-1),它应绑定到通过高效阳离子-π和C芳香族S4口袋 H⋅⋅⋅π相互作用。相反,-C 3 -烷基连接的葡萄糖片段,这是有可能朝向酶结合位点外的溶剂定向,改善Δ ģ平均2.9-3.8千焦摩尔-1。化合物16显示出亚微摩尔的体外抗凝血活性,如通过凝血酶原时间(PT)和评估凝血活酶时间(APTT)活化凝血中的混合人血浆测定(PT