Polyol Synthesis with β-Oxyanionic Alkyllithium Reagents: Syntheses of Aculeatins A, B, and D
作者:Viengkham Malathong、Scott D. Rychnovsky
DOI:10.1021/ol901623h
日期:2009.9.17
route was developed. The β-phenylthio alcohols were prepared from opticallypure oxiranes. Deprotonation and reductivelithiationgenerated the key intermediate, a β-oxyanionic alkyllithium reagent. Addition to a Weinreb amide produced the β-hydroxy ketone in >90% yield using only 1.5 equiv of the phenylthio alcohol. Stereoselective reduction of the ketone led to either the syn- or anti-1,3-diol. This simple