Mulberry Diels−Alder Adducts: Synthesis of Chalcomoracin and Mulberrofuran C Methyl Ethers
作者:Christian Gunawan、Mark A. Rizzacasa
DOI:10.1021/ol9026705
日期:2010.4.2
heptamethyl ethers of the mulberry Diels−Alderadducts chalcomoracin (1) and mulberrofuran J (2) is described. The key steps in each approach involved a biomimetic intermolecular [4+2]-cycloaddition between a dehydroprenylphenol diene derived from an isoprenoid-substituted phenolic compound and an α,β-unsaturated alkene of a chalcone as the dienophile. Critical to the success of the Diels−Alder reaction