Development of the [3 + 2] Annulations of Cyclohexenylsilanes and Chlorosulfonyl Isocyanate: Application to the Total Synthesis of (±)-Peduncularine
作者:Claudia W. Roberson、K. A. Woerpel
DOI:10.1021/ja012152f
日期:2002.9.1
The synthesis of (+/-)-peduncularine was accomplished using the [3 + 2] annulation of an allylic silane with chlorosulfonyl isocyanate to assemble the bicyclic core of the alkaloid. The stereochemistry of the annulation product was employed to control the installation of the indolylmethyl side chain at C-7 with complete stereoselectivity.
(+/-)-花梗碱的合成是通过使用烯丙基硅烷与氯磺酰基异氰酸酯的 [3 + 2] 环化来组装生物碱的双环核心来完成的。环化产物的立体化学用于控制吲哚基甲基侧链在 C-7 处的安装,具有完全立体选择性。