Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Synthesis of the right and left building blocks, 36 and 5, for the analog 3 of topostin B-1, an inhibitor of mammalian DNA topoisomerasc I, has been achieved in a convenient manner. ... Private communication from Dr. T. Andoh of Aichi Cancer Center. ... Noguchi H., Aoyama T., ...