A series of 5-C-alkylating camptothecins have been synthesized by one-step method, and their in vitro antitumor activity was evaluated against six human cancer cell lines. The results showed that all 5-C-alkylates of ...
A series of heterocyclic acid esters of camptothecins as new compounds had been synthesized by acylation method, their in vitro and in vivo antitumor activities were evaluated. The cytotoxic results showed that 6 poss...