A synthesis of 2-epi-fagomine using gold(I)-catalysed allene cyclisation
作者:Roderick W. Bates、Pearly Shuyi Ng
DOI:10.1016/j.tetlet.2011.03.130
日期:2011.6
A synthesis of 2-epi-fagomine via a highly stereoselective gold(I)-catalysedallene cyclisation is described. The stereochemical outcome of the cyclisation is opposite to that observed in previous studies. In contrast, gold(III)-catalysed cyclisation is inefficient and gives rise to double cyclisation by-products.