6,6‐Dimethoxy Bicyclo[3.2.0]Heptan‐2‐One: An Intermediate for Prostanoid Synthons

Abstract
The known 6,6‐dimethoxy bicyclo [3.2.0]heptan‐2‐one, obtained by (π 2 + π 2) photocycloaddition of 2‐cyclopentenone and 1, 1‐dimethoxyethene, is an adequate precursor for prostanoid synthons. Its conversion into intermediates for the 11‐desoxyprostaglandin (PG) series and for PGC2 is described.