Application and Scope of Schreiber's Gold(I)-Catalyzed α-Pyrone Synthesis to Ring A Aromatic Podolactones
作者:Eduardo Sánchez-Larios、Robert D. Giacometti、Stephen Hanessian
DOI:10.1002/ejoc.201402803
日期:2014.9
Schreiber's gold(I)-catalyzed synthesis of α-pyrones was adapted to the total synthesis of a ring A aromatic podolactone, urbalactone. The scope of the acetylenic ester partner in the formation of α-pyrones was studied. The total synthesis features, as key steps, α-pyrone formation, Friedel–Crafts cyclization, Stille coupling, and a N,N′-dicyclohexylcarbodiimide/4-(N,N-dimethylamino)pyridine lactonization
Schreiber 的金 (I) 催化合成 α-吡喃酮适用于环 A 芳香族足内酯(urbalactone)的全合成。研究了炔酯伙伴在 α-吡喃酮形成中的作用范围。全合成的关键步骤包括α-吡喃酮的形成、Friedel-Crafts 环化、Stille 偶联和 N,N'-二环己基碳二亚胺/4-(N,N-二甲氨基)吡啶内酯化以生成 γ-内酯。来自这项工作的几种 α-吡喃酮中间体表现出对 A2780 卵巢癌细胞系的体外抗增殖活性。