Synthetic and mechanistic studies on the antitumor antibiotics esperamicin A1 and calicheamicin .gamma.1. Oxidative functionalization of the 13-ketobicyclo[7.3.1]tridecenediyne core structure: construction of the allylic trisulfide trigger
作者:Philip Magnus、Richard Lewis、Frank Bennett
DOI:10.1021/ja00033a032
日期:1992.3
The simple 13-ketobicyclo[7.3.1]tridecenediyne 3 core structure of the esperamicins/calicheamicin can be readily functionalized in an oxidative manner to introduce the 1,2 double bond and 3β-oxygen substituent. The 3β-hydroxyl substituent allowed the intramolecular introduction of a nitrogen functionality at C2, but the resulting cyclic carbamate was too resistant to hydrolysis to be synthetically
esperamicins/calicheamicin 的简单 13-酮双环[7.3.1]十三烯二炔 3 核心结构可以很容易地以氧化方式官能化以引入 1,2 双键和 3β-氧取代基。3β-羟基取代基允许分子内在 C2 处引入氮官能团,但所得环状氨基甲酸酯对水解的抵抗力太强,无法合成。烯丙基三硫化物触发器可以通过 Wittig 化学以简单的方式安装在 13-酮基上