Convergent and enantioselective total synthesis of (−)-nalanthalide, a potential Kv1.3 blocking immunosuppressant
作者:Toshiaki Abe、Katsuhiko Iwasaki、Munenori Inoue、Takeyuki Suzuki、Kazuhiro Watanabe、Tadashi Katoh
DOI:10.1016/j.tetlet.2006.03.039
日期:2006.5
The first total synthesis of (−)-nalanthalide (1), a novel blocker of the voltage-gated potassium channel Kv1.3 from a microorganism, was accomplished in a convergent manner by utilizing coupling reaction of the trans-decalin 5 with 3-lithio-γ-pyrone 4. The key intermediate 5 was efficiently prepared from the known trans-decalone 7 through a [2,3]-Wittig rearrangement of the stannylmethyl ether 6 to
通过利用反式十氢化萘5与3-的偶联反应以收敛的方式完成了(-)-纳兰卤(1)的首次全合成,该合成物是微生物从电压门控钾通道Kv1.3的新型阻断剂。硫代-γ-吡喃酮4。关键中间体5是由已知的反式十氢萘烷7通过甲炔甲基甲醚6的[2,3] -Wittig重排有效制备的,以在C9处安装立体异构中心,在C8处安装外-亚甲基官能团。