Stereoselective synthesis of (−)-1-epi-ventiloquinone L and (+)-ventiloquinone L, the monomeric unit of cardinalin 3
作者:Rodney A. Fernandes、Arun B. Ingle、Vijay P. Chavan
DOI:10.1039/c2ob25453k
日期:——
A stereoselective synthesis of (−)-1-epi-ventiloquinone L and (+)-ventiloquinone L, the monomeric unit of cardinalin 3 has been described. The synthesis is completed in 7 steps with 10.5% and 13% overall yields for (−)-1-epi-ventiloquinone L and (+)-ventiloquinone L respectively. The key steps involve Dötz benzannulation of carbene 5 with alkyne 6 to give a substituted naphthalene moiety and oxa-Pictet–Spengler
立体选择性合成(-)-1- Epi -ventiloquinone L和(+)-ventiloquinone L(红衣主教3已经描述过了。该合成以7个步骤完成,分别具有(-)-1- Epi- ventiloquinone L和(+)-ventiloquinone L的总产率为10.5%和13%。关键步骤包括将卡宾5与炔6进行Dötz苯环环化反应,得到取代的萘部分,以及oxa-Pictet-Spengler反应以安装1,3-二甲基吡喃部分。