Enantioselective Total Synthesis of (-)-Subglutinols A and B: Potential Immunosuppressive Agents Isolated from a Microorganism
作者:Takuya Kikuchi、Mayuko Mineta、Jingo Ohtaka、Naoko Matsumoto、Tadashi Katoh
DOI:10.1002/ejoc.201100517
日期:2011.9
Potential immunosuppressive diterpenoid pyrones (–)-subglutinols A and B were efficiently synthesized in an enantioselective manner starting from a known trans-decalone derivative. The synthetic method involved the following key steps: (i) [2,3]-Wittig rearrangement of a stannyl methyl ether to access the requisite decalin segment; (ii) coupling of the decalin segment with a γ-pyrone moiety to set
潜在的免疫抑制性二萜吡喃酮 (-)-subglutinol A 和 B 以对映选择性方式从已知的 trans-decone 衍生物开始有效合成。合成方法包括以下关键步骤: (i) [2,3]-甲锡烷基醚的 Wittig 重排以获取必需的十氢化萘片段;(ii) 将十氢萘链段与 γ-吡喃酮部分偶联以建立所需的碳框架;(iii) 通过内部 SN2 型环化以一锅方式构建特征四氢呋喃环,以及 (iv) 将 γ-吡喃酮部分转化为 α-吡喃酮环以产生目标 (-)-subglutinol A 和B.