Enantioselective Total Synthesis of (+)-Leucascandrolide A Macrolactone
作者:Michael T. Crimmins、Phieng Siliphaivanh
DOI:10.1021/ol035797o
日期:2003.11.1
[reaction: see text] The enantioselective synthesis of the (+)-leucascandrolide A macrolactone has been achieved in 20 linear steps from 1,3-propanediol. The key steps in the synthesis are a reductive cleavage of bicyclic ketal 5 to establish the C15 stereogenic center and a diastereoselective aldol of the boron enolate of methyl ketone 3 to aldehyde 4 in preparation for a heteroconjugate addition