inhibitors was identified by X-ray crystal analysis of complex structures at solvent-exposed exit pocket C. The 2-amino-pyrrolo[2,3-d]pyrimidine derivatives, 7-deazapurines substituted with a benzyl moiety at C5, showed potent Hsp90 inhibition and broad-spectrum antiproliferative activity against NCI-60 cancer cell lines. The most potent compound, 6a, inhibited Hsp90 with an IC50 of 36 nM and showed a submicromolar
                                    通过X射线晶体分析在溶剂暴露的出口袋C处的复杂结构,鉴定了一系列新的热休克蛋白90(Hsp90)
抑制剂。2-
氨基-
吡咯并[2,3- d ]
嘧啶衍
生物7-脱氮
嘌呤在C5处被苄基部分取代的Nsp-60表现出有效的Hsp90抑制作用和对NCI-60癌
细胞系的广谱抗增殖活性。最有效的化合物6a以36 nM的IC 50抑制Hsp90,对NCI-60
细胞系表现出亚微摩尔的平均GI 50值。X射线晶体学和蛋白质印迹分析证实了Hsp90的
ATP结合口袋中6a的相互作用。