A conceptually novel construction of the 6a-hydroxypterocarpan skeleton – Synthesis of (±)-variabilin
作者:Philipp Ciesielski、Peter Metz
DOI:10.1016/j.bmc.2017.01.003
日期:2017.11
A new access to the 6a-hydroxypterocarpan variabilin was established. Key step of this concise totalsynthesis is a challenging cyclization of a haloketone via halogen-metal exchange and subsequent intramolecular addition to the carbonyl function.
Synthesis of isoflavonoids. Enantiopure cis- and trans-6a-hydroxypterocarpans and a racemic trans-pterocarpan
作者:Theunis G van Aardt、Hendrik van Rensburg、Daneel Ferreira
DOI:10.1016/s0040-4020(01)00679-2
日期:2001.8
Aldol condensation between phenylacetates and benzaldehydes affords 2,3-diaryl-3-hydroxypropanoates which serve as common precursors to both the first racemic trans-pterocarpan and enantiopure cis- and trans-6a-hydroxypterocarpans.