Synthesis of the C10−C22 Bis-spiroacetal Domain of Spirolides B and D via Iterative Oxidative Radical Cyclization
作者:Daniel P. Furkert、Margaret A. Brimble
DOI:10.1021/ol026605c
日期:2002.10.1
[reaction: see text] A synthetic approach to the novel bis-spiroacetal moiety of spirolides B and D is reported. The strategy hinges upon successive formation of the spirocenters at C15 and C18 by radical oxidative cyclization, followed by base-induced rearrangement of a C19-20 alpha-epoxide to introduce the C19 hydroxyl group.