On the synthesis of vinyl and phenyl C-furanosides by stereospecific debenzylative cycloetherification
作者:Riccardo Cribiù、K. Eszter Borbas、Ian Cumpstey
DOI:10.1016/j.tet.2009.01.014
日期:2009.3
diastereoselectivity of addition is dependent on whether a Grignard reagent or a trialkylzincate reagent is used. The open-chain compounds undergo a stereospecific cyclisation reaction on treatment with catalytic strong Brønsted acid with heating to form tetrahydrofurans with inversion of configuration at the allylic or benzylic carbon (C-1) and loss of hydroxyl from this position. A short synthesis