Second-Generation Inhibitors for the Metalloprotease Neprilysin Based on Bicyclic Heteroaromatic Scaffolds: Synthesis, Biological Activity, and X-Ray Crystal-Structure Analysis
作者:Stefan Sahli、Brian Frank、W. Bernd Schweizer、François Diederich、Denise Blum-Kaelin、Johannes D. Aebi、Hans-Joachim Böhm、Christian Oefner、Glenn E. Dale
DOI:10.1002/hlca.200590051
日期:2005.4
A new class of nonpeptidic inhibitors of the ZnII-dependent metalloprotease neprilysin with IC50 values in the nanomolar activity range (0.034–0.30 μM) were developed based on structure-based de novo design (Figs. 1 and 2). The inhibitors feature benzimidazole and imidazo[4,5-c]pyridine moieties as central scaffolds to undergo H-bonding to Asn542 and Arg717 and to engage in favorable π-π stacking interactions
基于基于结构的从头设计,开发了新型的Zn II依赖性金属蛋白酶中性溶血素的非肽类抑制剂,其IC 50值在纳摩尔活性范围内(0.034–0.30μM)(图1和2)。抑制剂的特征是苯并咪唑和咪唑并[4,5- c ]吡啶部分作为中心骨架,与Asn542和Arg717进行H键结合,并与His711的咪唑环进行有利的π - π堆积相互作用。该平台装饰有硫醇载体,可与Zn II配合使用离子和芳基残基占据疏水的S1'口袋,但在S2'口袋中缺少用于结合的取代基,当不被Phe106和Arg110的侧链保持封闭时,该取代基仍保持封闭。活性化合物(+)- 1,(+)- 2,(+)- 25和(+)- 26的对映选择性合成是使用Evans助剂完成的(方案2、4和5)。具有咪唑并[4,5- c ]吡啶核的抑制剂(+)- 2和(+)- 26约为。活性是苯并咪唑核心((+)- 1和(+)- 25)的8倍(表1)。通过对中性溶酶与(+)-