First Stereoselective Total Synthesis of a Dimeric Naphthoquinonopyrano-γ-lactone: (+)-γ-Actinorhodin
作者:Markus Neumeyer、Reinhard Brückner
DOI:10.1002/anie.201611183
日期:2017.3.13
We have accomplished the first totalsynthesis of an isomerically pure naphthoquinonopyrano‐γ‐lactone dimer, γ‐actinorhodin, in eleven steps. Two steps exploit pairs of peri‐MeO groups as unusual selectivity controls. The respective MeO groups convey the steric bulk of a bromo or iodo substituent located ortho to one MeO group as steric hindrance into the vicinity of the second MeO group. This relay