Presented here is a full account on the development of a strategy culminating in the first total synthesis of the architecturally complex daphniphyllum alkaloid, (−)-calyciphylline N. Highlights of the approach include a highly diastereoselective, intramolecular Diels–Alder reaction of a silicon-tethered acrylate; an efficient Stille carbonylation of a sterically encumbered vinyl triflate; a one-pot
这里介绍的是对结构复杂的瑞香
生物碱 (−)-calyciphylline N 的首次全合成策略的开发的完整描述。该方法的亮点包括
硅-的高度非对映选择性、分子内 Diels-Alder 反应。系链
丙烯酸酯;空间阻碍的
乙烯基三氟甲磺酸酯的高效 Stille 羰基化;一锅纳扎罗夫环化/原脱甲
硅烷基化序列;以及完全取代的二烯酯的
化学选择性氢化。