A facile synthetic route was developed to (±)-magnosalicin (1), a new type of neolignan with antiallergy activity isolated from Magnolia salicifolia, starting from a chalcone, 1, 3-bis(2', 4', 5'-trimethoxyphenyl)prop-2-en-1-one (3).
Synthesis of 2,3-syn-diarylpent-4-enamides via acyl-Claisen rearrangements of substituted cinnamyl morpholines: application to the synthesis of magnosalicin
作者:Benjamin D. Dickson、Nora Dittrich、David Barker
DOI:10.1016/j.tetlet.2012.06.088
日期:2012.8
The acyl-Claisen rearrangement of substituted phenylacetylchlorides and cinnamyl morpholines gives 2,3-syn-diarylpent-4-enamides. Electron-rich cinnamyl morpholines containing alkoxy substituents only reacted with phenylacetylchlorides; replacement of the phenylacetylchlorides with alkyl acid chlorides in these reactions gave no rearranged products. Use of the morpholine amides generated in the