作者:Kun-Liang Wu、Eduardo V. Mercado、Thomas R. R. Pettus
DOI:10.1021/ja1115524
日期:2011.4.27
An expeditious convergenttotalsynthesis affords (±)-γ-rubromycin (1) in 4.4% overall yield. The longest linear sequence is 12 steps from commercial starting materials. The effort highlights a remarkable late-stage oxidative [3 + 2] cycloaddition for construction of the spiroketal, a regioselective carbonyl methylenation, a boron tribromide promoted deprotection, ortho- to para- naphthoquinone spiroketal