Two-directional synthesis of the non-adjacent bis(tetrahydrofuran) core of cis-sylvaticin
作者:Kevin J. Quinn、Kaylie E. Gage、Caroline M. Stanners、Colin O. Hayes、Kathleen E. Shanley、Shalise M. Couvertier
DOI:10.1016/j.tetlet.2013.11.032
日期:2014.1
non-adjacent bis(tetrahydrofuran) core of cis-sylvaticin in seven steps and 24% overall yield from (2R,3S)-1,2-epoxy-4-penten-3-ol is reported. A strategy involving assembly of the central 1,4-diol unit by silicon-tethered ring-closing metathesis and subsequent two-directional functionalization, including establishment of the cis/threo stereochemical relationships of the tetrahydrofuran rings by Sharpless
七步合成C 2对称,不相邻的顺式香豆素双(四氢呋喃)核,从(2 R,3 S)-1,2-环氧--4-戊烯-3-醇中获得24%的总收率被报道。由硅-拴系的闭环复分解和随后的双向官能化,包括建立的涉及中央1,4-二醇单元的组件A策略顺式/苏式通过Sharpless不对称二羟基化的四氢呋喃环的立体化学关系/ S Ñ 2环化,被雇用。