Synthesis of Enantiomerically Pure, Highly Functionalized, Medium-Sized Carbocycles from Carbohydrates: Formal Total Synthesis of (+)-Calystegine B<sub>2</sub>
作者:José Marco-Contelles、Elsa de Opazo
DOI:10.1021/jo0111107
日期:2002.5.1
Grubbs' catalyst on selected carbohydrate-derived precursors has afforded variable yields of the expected unsaturated cycloheptane or cycloctane derivatives. The synthesis of the cycloheptitols has been carried out in good yields, regardless of the absolute configuration at the different stereocenters and the nature of the O-functional groups bound in allylic positions to one of the double bonds implicated