Novel camptothecin derivatives. part 1: oxyalkanoic acid esters of camptothecin and their in vitro and in vivo antitumor activity

Novel camptothecin derivatives. part 1: oxyalkanoic acid esters of camptothecin and their in vitro and in vivo antitumor activity Alkyl Esters of Camptothecin and 9-Nitrocamptothecin:  Synthesis, in Vitro Pharmacokinetics, Toxicity, and Antitumor Activity Design and one-pot synthesis of new 7-acyl camptothecin derivatives as potent cytotoxic agents Synthesis and antitumor activity of novel substituted uracil-1′(N)-acetic acid ester derivatives of 20(S)-camptothecins 7-Cycloalkylcamptothecin derivatives: Preparation and biological evaluation Synthesis and antitumor activity of 7-ethyl-9-alkyl derivatives of camptothecin Synthesis and antitumor activity of a new class of water soluble camptothecin derivatives Synthesis and antitumor activity of the hexacyclic camptothecin derivatives Regioselective synthesis and cytotoxicities of camptothecin derivatives modified at the 7-, 10- and 20-positions Synthesis and antitumor activity of biotinylated camptothecin derivatives as potent cytotoxic agents