The synthesis of cyclopentanoid antibiotic Kjellmanianone is described in this study. The C-acylation of lithium enolates of 3-Methoxycyclopentenone by N-carbomethoxyimidazole or methylcyanoformate \beta-ketoester, which when oxidized with Mn(III) acetate produces kjellmanianone in good yield.
DEMİR, Ayhan S.; TANYELİ, Cihangir; GÜLBEYAZ, Volkan; and AKGÜL, Hülya (1996) "The Facile Synthesis of Cyclopentanoid Antibiotic Kjellmanianone," Turkish Journal of Chemistry: Vol. 20: No. 3, Article 9. Available at: https://journals.tubitak.gov.tr/chem/vol20/iss3/9