A Divergent Synthesis of the Δ<sup>13</sup>-9-Isofurans
作者:Douglass F. Taber、Peiming Gu、Rui Li
DOI:10.1021/jo900767x
日期:2009.8.7
stereodivergent total synthesis of the Δ13-9-isofurans has been developed. The four core substituted tetrahydrofurans were prepared by the Sharpless asymmetric epoxidation and Sharpless asymmetric dihydroxylation followed by cascade cyclization. The relative configuration at C-8 was inverted by oxidation followed by immediate L-Selectride reduction. The relative configuration of the C-15 diastereomers was