This document does not have an outline. ... JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page. ... Author links open the overlay panel. Numbers correspond to the affiliation list which can be exposed by using the show more link. ... Naphthoquinone 1, a fully functionalized model for intermediates in ansamycin synthesis, was prepared by the intramolecular Claisen condensation of benzofuran 9 followed by oxidation of the novel ...