Synthesis and elaboration of functionalised carbohydrate-derived spiroketals
作者:Peter A. V. van Hooft、Farid El Oualid、Herman S. Overkleeft、Gijsbert A. van der Marel、Jacques H. van Boom、Michiel A. Leeuwenburgh
DOI:10.1039/b401699h
日期:——
three-step approach for the synthesis of sugar derived spiroketals is presented. The methodology consists of Grignardaddition of vinyl- or allylmagnesium bromide to a carbohydrate lactone, followed by K-10 clay mediated glycosidation with a terminal alkenol and subsequent ring-closing metathesis of the resulting diene. The generality of this procedure is demonstrated by the synthesis of various pyranose-