The synthesis of cyclopentanoid antibiotic Kjellmanianone is described
in this study. The C-acylation of lithium enolates of 3-Methoxycyclop
entenone by N-carbomethoxyimidazole or methylcyanoformate beta-ketoest
er, which when oxidized with Mn(III) acetate produces kjellmanianone i
n good yield.