Synthesis of four possible stereoisomers of 1,2-epoxy-3-hydroxyerythrinans: total synthesis of an alkenoid-type erythrinan alkaloid, (+/-)-erythratidine
S. Hosoi et al., Synthesis of four possible stereoisomers of 1,2-epoxy-3-hydroxyerythrinans: total synthesis of an alkenoid-type erythrinan alkaloid, (+/-)-erythratidine, J CHEM S P1, 10, 2000, pp. 1505-1511
Four stereoisomers of 1,2-epoxy-3-hydroxyerythrinans are synthesized and th
eir stereochemistries determined unambiguously. Of these, the 1,2 alpha-epo
xy-3 alpha-alcohol 4 is converted to the alkenoid-type alkaloid, (+/-)-eryt
hratidine 1, utilizing reductive migration of an alpha,beta-unsaturated gam
ma,delta-epoxyamide with samarium diiodide as a key step.