Sulfur-Directed Enantioselective Synthesis of Functionalized Dihydropyrans
作者:Roberto Fernández de la Pradilla、Mariola Tortosa、Nadia Lwoff、Miguel A. del Águila、Alma Viso
DOI:10.1021/jo801029q
日期:2008.9.1
dihydropyrans. The scope of this methodology, including the preparation of seven-membered rings, has been studied in depth. The reactivity of our sulfinyl dihydropyrans toward oxidation, imination, and dihydroxylation has been explored, and thus several routes to densely functionalized pyran derivatives have been outlined. The reactivity of allylic dihydropyranyl sulfones and sulfoximines in S(N)2'
Formal synthesis of ent-dysiherbaine from sulfinyl dihydropyrans by sigmatropic rearrangement and tethered aminohydroxylation
作者:Roberto Fernández de la Pradilla、Nadia Lwoff、Alma Viso
DOI:10.1016/j.tetlet.2007.09.103
日期:2007.11
A stereospecific [2,3]-sigmatropic rearrangement of a sulfinyl dihydropyran, followed by a tethered aminohydroxylation reaction, are the key steps of a formalsynthesis of ent-dysiherbaine from an enantiopure sulfinyl dienol.