A Formal Synthesis of the C1−C9 Fragment of Amphidinolide C Employing the Tamaru Reaction
作者:Mahesh P. Paudyal、Nigam P. Rath、Christopher D. Spilling
DOI:10.1021/ol100959a
日期:2010.7.2
Homoallylation of aldehydes with isoprene and triethylborane catalyzed by Ni(acac)2 gave hydroxyalkenes in good yield with excellent regio- and stereoselectivity. Cross metathesis of the hydroxyalkenes with methyl acrylate using second-generation Grubbs catalyst and copper(I) iodide afforded α,β-unsaturated esters, which underwent cyclization in the presence of DBU to produce tetrahydrofurans with