作者:Kelley A. Fennell、Ute Möllmann、Marvin J. Miller
DOI:10.1021/jo7020532
日期:2008.2.1
Structurally related mycobactins affect the growth of both mycobacterial and human cells through interference with iron chelation. To further probe the biological activity of this class of compounds, the total syntheses of amamistatin B and two analogs were completed, and the synthetic samples were screened for tumor cell growth inhibition, HDAC inhibition, and Mycobacterium tuberculosis growth inhibition
从诺卡氏菌菌株中分离得到的天然产物Amamistatins A和B对三种人类肿瘤细胞系表现出生长抑制作用(IC 50 0.24-0.56μM)。与结构相关的分支杆菌素通过干扰铁螯合影响分支杆菌和人细胞的生长。为了进一步探查这类化合物的生物活性,完成了阿米他汀B和两种类似物的总合成,并对合成样品进行了肿瘤细胞生长抑制,HDAC抑制和结核分枝杆菌生长抑制的筛选。Amamistatin B(15)和非对映异构体18均对MCF-7细胞具有活性(IC 500.12-0.20μM),对PC-3电池则更低(IC 50 8-13μM )。Amamistatin B仅适度抑制结核分枝杆菌的生长(MIC 47μM ),但表现出耻垢分枝杆菌和其他细菌的生长促进作用。