Acylation of cyclohexene by cyclohexenyl- or cyclopentenyl-acetyl chloride gave des-A-11 -ox0 or des-~-7-oxo steroids. ... The total synthesis of steroids remains an active area of research although the aim of the studies and the methods used have changed over the years.' Here we propose a one step des-A-11-oxo-steroid (or des-~-7-oxo steroid) synthesis from cyclohexene and cyclopentenylacetyl (or cyclohexenylacetyl) chloride. We have previously shown that ...