Several aromatic sesquiterpenes from Laurencia algae were prepared from chamigrene skeleton precursors. Chemical evidence was adduced to support a biogenetic-type scheme for the synthesis of perforenol and perforene. By means of x ray analysis the structure and absolute configuration of one of the intermediates was established.
Total Synthesis of Laurane and Guaiane Sesquiterpenoids via Oxidative Nazarov Reaction
作者:Yuye Chen、Wenqing Chen、Zhiting Zhang、Jing Xu
DOI:10.1002/cjoc.202400014
日期:——
natural products, cyclopentenones usually can be fabricated by Nazarov cyclization using divinyl ketones or functionalized tertiary divinyl carbinols (TDCs) as substrates. However, straightforward method for transforming unfunctionalized TDCs to their corresponding cyclopentenones is currently lacking. Herein, we wish to report the total syntheses of four structurally distinct terpenoids, namely laurane-type
Laurene, a new sesquiterpene hydrocarbon fromLaurencia glandulifera Kützing and L. nipponica Yamada, is shown to possess structure I. Isolaurene (IV) and epilaurene (XX) have been synthesized.