Novel C4- and C7-modified FK228 analogues were efficiently synthesized in a highly convergent and unified manner. This synthesis features the amide condensation of glycine-d-cysteine-containing segments with d-valine-containing segments for the direct assembly of the corresponding seco-acids, which are key precursors of macrolactones. The HDAC inhibition assay and cell-growth inhibition analysis of
新型的C4和C7修饰的FK228类似物以高度融合和统一的方式高效合成。这种合成功能的酰胺缩合甘
氨酸d含半胱
氨酸-与段d的对应的直接组件含有缬
氨酸段开环-acids,这是大环内酯的关键前体。合成类似物的H
DAC抑制测定和细胞生长抑制分析揭示了其结构-活性关系的新方面。这项研究表明,对FK228的C4和C7侧链进行简单修饰可有效提高H
DAC抑制活性和同工型选择性。此外,鉴定了有效的和高度异构体选择性的I类H
DAC1
抑制剂。