Syntheses and Structural Confirmations of Members of a Heterocycle-Containing Family of Labdane Diterpenoids
作者:Daniel J. Mack、Jon T. Njardarson
DOI:10.1002/anie.201208412
日期:2013.1.28
Building with berries! Several labdane natural products have been synthesized for the first time by the combination of a copper‐catalyzed vinyl oxirane ring expansion reaction with an abundant, inexpensive, chiral natural source (juniper berries; see scheme). These expedient (1–5 step) syntheses have resulted in the structural confirmations of five natural products and one reassignment. Reagent‐controlled
用浆果建造!通过将铜催化的乙烯基环氧乙烷扩环反应与丰富、廉价的手性天然来源(杜松子;参见方案)相结合,首次合成了几种拉丹烷天然产物。这些权宜之计(1-5 步)合成导致了五种天然产物的结构确认和一种重新分配。还提供了试剂控制的氧化和 1,3-二烯异构化结果。