资助机构:Direccion General de Investigacion、Ministryio de Educacion y Ciencia (DGI-MEC);授权号:CTQ2006-04522/BQU Comunidad de Madrid;拨款编号:S-SAL-0249-2006 教育与科学部长 (MEC)
[2,3]-Sigmatropic Rearrangements of 3-Sulfinyl Dihydropyrans: Application to the Syntheses of the Cores of <i>ent</i>-Dysiherbaine and Deoxymalayamicin A
作者:Roberto Fernández de la Pradilla、Nadia Lwoff、Miguel Ángel del Águila、Mariola Tortosa、Alma Viso
DOI:10.1021/jo8015709
日期:2008.11.21
The [2,3]-sigmatropic rearrangement of a variety of configurationally stable diastereomeric allylic sulfinyl dihydropyrans, produced by base-promoted cyclization of sulfinyl dienols, has been studied. In some cases, the efficient transformation of these substrates into dihydropyranols required an in-depth study of reaction conditions, with the preferred protocol relying on the use of DABCO in warm toluene. This methodology has been applied to the syntheses of the cores of ent-dysiherbaine and deoxymalayamicin A by means of efficient tethered aminohydroxylations.