Synthèse et stéréochimie de perhydrocyclopenta[b]furannones-3-cis et perhydrocyclopenta[b]furannols-3-cis

Synthetic route to new cis-perhydrocyclopenta[b]furan-3-ones and cis-perhydrocyclopenta[b]furan-3-ols is described. Their configurations and conformations were inferred by ¹H and ¹³C nmr spectroscopy. A certain rigidity is associated with the bond common to the two fused ring. The conformation of tetrahydrofuran-3-one ring appears to be a composite of the C, and C₂ forms depending on the C-2 substitution.