科研之友
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摘要
The synthesis of each of the heptamethyl ethers of the mulberry Diels-Alder adducts 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 alpha,beta-unsaturated alkene of a chalcone as the dienophile. Critical to the success of the Diels-Alder reaction was the presence of the free phenol in the 2'-hydroxychalcone.
- 出版日期2010-4-2
