A [2 + 2] Photocycloaddition–Fragmentation Approach toward the Carbon Skeleton of <i>cis</i>-Fused Lycorine-type Alkaloids
作者:Maike H. Wahl、Christian Jandl、Thorsten Bach
DOI:10.1021/acs.orglett.8b03402
日期:2018.12.7
photocycloaddition–fragmentation approach (nine examples, 54–80% yield). The developed sequence enables a conceptually new entry to cis-fused lycorine-type alkaloids of the Amaryllidaceae family with the complete carbon skeleton being successfully assembled. A subsequent von Braun-type reaction emphasized the biological relation between lycorine- and homolycorine-type alkaloids providing a synthetic tool