Structure–activity relationships of bioisosteric replacement of the carboxylic acid in novel androgen receptor pure antagonists
摘要:
A series of 5,5-dimethylthiohydantoin derivatives were synthesized and evaluated for androgen receptor pure antagonistic activities for the treatment of hormone refractory prostate cancer. CH4933468 (32d) with a sulfonamide side chain not only exhibited antagonistic activity with no agonistic activity in the reporter gene assay but also inhibited the growth of bicalutamide-resistant cell lines. This compound also inhibited tumor growth of the LNCaP xenograft in mice dose-dependently. (c) 2010 Elsevier Ltd. All rights reserved.
前列腺癌(PC)是全世界男性中最常见的癌症之一,雄激素受体(AR)是治疗 PC 的经过充分验证的药物靶点。然而,随着时间的推移,PC 通常会对 AR 拮抗剂表现出耐药性。因此,迫切需要寻找新型有效的 PC 治疗药物。设计、合成和评估了一系列新型基于乙内酰硫脲的 AR 拮抗剂,这些拮抗剂能够有效降解 AR。基于我们之前的SAR和进一步的结构优化,发现了一种具有双重机制的工具分子,包括提高拮抗活性和有效降解(AR-fl和AR-V7)。而且,还可以有效阻断AR核转位并抑制AR/AR-V7异二聚化,从而抑制下游基因转录。重要的是,在 LNCaP(TGI:70.70%)和 22Rv1(TGI:78.89%)异种移植模型中显示出强大的功效。这为治疗前列腺癌提供了新的设计策略和有利的潜在化合物。