The synthesis and evaluation of flexible analogues of the topoisomerase I inhibitor, camptothecin

The synthesis and evaluation of flexible analogues of the topoisomerase I inhibitor, camptothecin Synthesis and pharmacological evaluation of novel non-lactone analogues of camptothecin Modification of the hydroxylactone ring of camptothecin: inhibition of mammalian topoisomerase I and biological activity Plant antitumor agents. 29. Synthesis and biological activity of ring D and ring E modified analogs of camptothecin Synthesis of novel 10-hydroxycamptothecin derivatives utilizing topotecan hydrochloride as ortho-quinonemethide precursor Water Soluble Inhibitors of Topoisomerase I:  Quaternary Salt Derivatives of Camptothecin Synthesis and antitumor activity of 7-ethyl-9-alkyl derivatives of camptothecin The synthesis of 5-substituted camptothecins as potential inhibitors of DNA topoisomerase I Synthesis and antitumor activity of a new class of water soluble camptothecin derivatives Synthesis of new camptothecin analogs with improved antitumor activities