Cyclotrimerization approach to unnatural structural modifications of pancratistatin and other amaryllidaceae constituents — Synthesis and biological evaluation
作者:Tomas Hudlicky、Michael Moser、Scott C Banfield、Uwe Rinner、Jean-Charles Chapuis、George R Pettit
DOI:10.1139/v06-078
日期:2006.10.1
The phenanthridone core of pancratistatin lacking all aromatic oxygenation was prepared by cyclotrimerization of acetylene-containing scaffolds 30 and 41, reflecting the natural and the C-1 epi configuration, re- spectively, of the amino inositol moiety. The cobalt-catalyzed formation of the aromatic core led to bisTMS derivatives 39 and 48, as well as bisacetyl derivative 51. The effectiveness of
缺乏所有芳香氧合的 pancratastatin 的菲啶酮核心是通过含乙炔支架 30 和 41 的环三聚反应制备的,分别反映了氨基肌醇部分的天然和 C-1 外延构型。钴催化的芳香核形成导致双TMS衍生物39和48,以及双乙酰衍生物51。将天然或反式系列的环三聚的有效性与顺式系列的效果进行比较。此外,还比较了炔丙胺和炔丙酰胺的环三聚产率。针对 7 种癌细胞系测试了 11 种衍生物,包括完全羟基化的菲蒽酮 39。三种化合物显示出的活性仅比 7-脱氧胰腺抑素低一个数量级。