Synthesis of a Protected (±)-Calicheamicinone Derivative by Sequential Introduction of Functionality into the Bicyclo[7.3.1]enediyne Core Structure
作者:Philip Magnus、Gregory F. Miknis、Neil J. Press、Didier Grandjean、G. Mark Taylor、John Harling
DOI:10.1021/ja970743t
日期:1997.7.1
The core bicyclo[7.3.0]enediyne 3 has been synthesized from the protected cyclohexane-1,2-dione 6 and enediyne component 9. Conversion of 20 into more highly functionalized enediynes was accomplished by oxidation and amination to give 27. Protection of 27, and conversion into 31, gave on treatment with (MeO)2P(O)CH2CO2Me the lactone 32, which was transformed into the trisulfide 39. All attempts to
核心双环 [7.3.0] 烯二炔 3 由受保护的环己烷-1,2-二酮 6 和烯二炔组分 9 合成。通过氧化和胺化将 20 转化为更高官能化的烯二炔,得到 27。 27 的保护,并转化为 31,在用 (MeO)2P(O)CH2CO2Me 处理后得到内酯 32,后者转化为三硫化物 39。所有尝试使用其他工作人员成功应用于类似底物的条件对 39 进行脱保护,仅导致环状硫化物 42 和 43。