Design, Synthesis, and Structure–Activity Relationship Studies of Bisamide Derivatives of Amphotericin B with Potent Efficacy and Low Toxicity
作者:Huijun Ma、Anran Qian、Yazhou Zheng、Xin Meng、Ting Wang、Yinyong Zhang、Lulu Sun、Feng Zou、Bomei Zhao、Shuhua Zhang、Dan Zhang、Yushe Yang
DOI:10.1021/acs.jmedchem.1c02227
日期:2022.7.14
(IFIs), though severe toxicity derived from self-aggregation greatly limits its clinical application. Herein, we applied a bisamidation strategy at the C16-COOH and C3′-NH2 to improve the therapeutic properties by suppressing self-aggregation. It was found that basic amino groups at the residue of C16 amide were beneficial to activity, while lipophilic fragments contributed to toxicity reduction. Additionally
两性霉素 B (AMB, 1 ) 是治疗可能危及生命的侵袭性真菌感染 (IFI) 中最强大的抗生素,尽管源自自聚集的严重毒性极大地限制了其临床应用。在此,我们在 C16-COOH 和 C3'-NH 2上应用了双酰胺化策略,通过抑制自聚集来改善治疗特性。发现C16酰胺残基上的碱性氨基有利于活性,而亲脂性片段有助于降低毒性。此外, C3' 酰胺上的N-甲基氨基乙酰基和氨基乙酰基可以帮助保持抑菌效果。修改工作最终发现了36 (ED 50= 0.21 mg/kg),其在小鼠中的抗真菌效力比其最佳衍生物安非酰胺强 1.5 倍,自聚集倾向低,因此急性毒性低。随着治疗指数的提高和良好的PK曲线,36有望作为第二代多烯类抗真菌剂进一步发展。