Synthesis of the C19 methyl ether of aspercyclide A via germyl-Stille macrocyclisation and ELISA evaluation of both enantiomers following optical resolution
作者:James L. Carr、Jimmy J. P. Sejberg、Fabienne Saab、Mary D. Holdom、Anna M. Davies、Andrew J. P. White、Robin J. Leatherbarrow、Andrew J. Beavil、Brian J. Sutton、Stephen D. Lindell、Alan C. Spivey
DOI:10.1039/c1ob05862b
日期:——
Aspercyclide A (1) is a biaryl ether containing 11-membered macrocyclic natural product antagonist of the human IgE-FcεRI protein-protein interaction (PPI); a key interaction in the signal transduction pathway for allergic disorders such as asthma. Herein we report a novel approach to the synthesis of the C19 methyl ether of aspercyclide A, employing a Pd(0)-catalysed, fluorous-tagged alkenylgermane/arylbromide
Aspercyclide A ( 1 ) 是一种含有 11 元大环天然产物的二芳基醚类人 IgE-FcεRI 蛋白相互作用 (PPI) 拮抗剂;过敏性疾病(如哮喘)的信号转导途径中的关键相互作用。在此,我们报告了一种合成 aspercyclide A 的 C19 甲基醚的新方法,采用 Pd(0) 催化的、含氟标记的烯基锗烷/芳基溴大环化(germyl-Stille 反应)作为关键步骤,并评估两种对映异构体在通过 CSP-HPLC 光学拆分后,通过ELISA分析该化合物。还报道了锗氢化物27 的晶体结构。