1959 年 79 巻 2 号 p. 258-260
Following the syntheses of compounds possessing A-ring of tetracyclines or its partial structure, the compounds synthesized were tested for antibacterial and antifungal activies but none gave any marked effect except 2-methylcarbamoylcyclohexane-1, 3-dione which inhibited the growth of Staphylococcus aureus in a concentration of 125γ/cc.