作者:Harold Mastalerz、Terrence W Doyle、John F Kadow、Dolatrai M Vyas
DOI:10.1016/s0040-4039(96)02009-6
日期:1996.11
An esperamicin core analog 4 with an epoxide trigger like that found in the related enediyne, dynemicin, was prepared. Surprisingly, it was found to be relatively stable; the p-aminophenyl substituent did not facilitate epoxide solvolysis to the extent that had been anticipated. A mild acid, pyridinium p-toluenesulfonate, was found to induce solvolysis of 4 and led to the formation of the cycloaromatized
制备了具有环氧化物引发剂的埃斯帕米霉素核心类似物4,该环氧化物引发剂如在相关的烯二炔迪尼米星中所发现的那样。令人惊讶的是,发现它相对稳定。在p -氨基取代不利于环氧溶剂分解到原来预想的程度。发现一种弱酸,对甲苯磺酸吡啶鎓,可诱导4的溶剂分解,并导致形成环芳香化产物25。