Design, synthesis, and anti-inflammatory activity of novel 20-O-substituted camptothecin carbamate derivatives.

Twelve novel camptothecin derivatives with a carbamate substituent at position 20 were designed and synthesized. Most of the targeted compounds indicated potent anti-inflammatory activity in a lipopolysaccharide stimulation of peritoneal macrophage model. Among them, the benzyl(methyl)amine derivative showed the most pronounced anti-inflammatory activity at a concentration of 1 μM and TNF-α inhibitory rate is increased by 10.2% compared to the lead compound (N,N-dimethylethylenediamine derivative). [ABSTRACT FROM AUTHOR]