作者:Nobuhiro Shionozaki、Toru Yamaguchi、Hiroyuki Kitano、Mitsutaka Tomizawa、Kimiko Makino、Hiromi Uchiro
DOI:10.1016/j.tetlet.2012.07.058
日期:2012.9
Total synthesis of an antitumor compound myceliothermophin A and related compounds based on a convergent synthetic strategy was investigated. A common decalin skeleton of myceliothermophins was stereoselectively constructed by an IMDA reaction. The fully elaborated precursor of myceliothermophins was obtained via aldol reaction of N-protected γ-methoxylactam with decalin aldehyde. By using Teoc group
研究了基于融合合成策略的抗肿瘤化合物Myceliothermophin A和相关化合物的全合成。通过IMDA反应立体选择性地构建了Myceliothermophins的普通十氢化萘骨架。通过N的醇醛缩合反应获得了精制的Myceliothermophins的前体萘烷醛保护的γ-甲氧基内酰胺。通过使用Teoc基团保护内酰胺环的氮原子,成功地完成了在甲氧基氨基部分水解之前的选择性脱保护,从而获得了γ-甲氧基内酰胺(myceliothermophins C和D)。这些化合物的后续水解以高收率提供了相应的γ-羟基内酰胺以及分枝嗜热菌素A和B。还通过使所获得的γ-羟基内酰胺脱水来合成杀霉菌素E。还成功确定了Myceliothermophins A–E的绝对构型。