A Diels-Alder/Retro-Diels-Alder Approach for the Enantioselective Synthesis of Microbial Butenolides
作者:Christian A. Citron、Susanne M. Wickel、Barbara Schulz、Siegfried Draeger、Jeroen S. Dickschat
DOI:10.1002/ejoc.201200991
日期:2012.10.9
structures were verified by synthesis of reference compounds through a Diels–Alder/retro-Diels–Alder approach. This synthetic method was also successfully applied in the synthesis of butenolides that are signalling molecules from streptomycetes. For the enantioselective synthesis of these butenolides a modified route including an enantioselective Diels–Alder reaction was used.
已从内生真菌 Geniculosporium sp. 中鉴定出几种挥发性内酯。从岩蔷薇 Cistus monspeliensis 中分离出来,俗称蒙彼利埃岩蔷薇。通过使用闭环汽提装置从琼脂平板培养物中收集真菌挥发物,并通过 GC-MS 分析顶空提取物。这些内酯的结构是从它们的质谱数据中提出的。通过 Diels-Alder/retro-Diels-Alder 方法合成参考化合物来验证建议的结构。这种合成方法也成功地应用于合成链霉菌信号分子丁烯内酯。对于这些丁烯内酯的对映选择性合成,使用了一种改进的路线,包括对映选择性 Diels-Alder 反应。