Maximizing ER-α Degradation Maximizes Activity in a Tamoxifen-Resistant Breast Cancer Model: Identification of GDC-0927
作者:Mehmet Kahraman、Steven P. Govek、Johnny Y. Nagasawa、Andiliy Lai、Celine Bonnefous、Karensa Douglas、John Sensintaffar、Nhin Liu、KyoungJin Lee、Anna Aparicio、Josh Kaufman、Jing Qian、Gang Shao、Rene Prudente、James D. Joseph、Beatrice Darimont、Daniel Brigham、Richard Heyman、Peter J. Rix、Jeffrey H. Hager、Nicholas D. Smith
DOI:10.1021/acsmedchemlett.8b00414
日期:2019.1.10
further optimization of ER-α degradation efficacy of a series of ER modulators by refining side-chain substitution led to efficacious selective estrogen receptor degraders (SERDs). A fluoromethyl azetidine group was found to be preferred and resulted in the identification of bis-phenol chromene 17ha. In a tamoxifen-resistant breast cancer xenograft model, 17ha (ER-α degradation efficacy = 97%) demonstrated
通过细化侧链取代进一步优化一系列ER调节剂的ER-α降解功效导致了有效的选择性雌激素受体降解剂(SERD)。发现氟甲基氮杂环丁烷基是优选的,并导致鉴定了双酚亚甲基色烯17ha。在耐他莫昔芬的乳腺癌异种移植模型中,17ha(ER-α降解效率= 97%)证明肿瘤消退,同时瘤内ER-α水平显着降低。但是,尽管口服暴露量较高,但5a(ER-α降解功效= 91%)的活性较差。该结果表明,在耐他莫昔芬的乳腺癌模型中,优化ER-α降解效果可产生具有强大作用的化合物。