Large Scale Synthesis of the High Quality Indoloquinone Antitumor Agent EO 9 via [Bis(trifluoroacetoxy)iodo]benzene Oxidation of 4-Aminoindole - Kinugawa, Masahiko; Masuda, Yoshiaki; Arai, Hitoshi; Nishikawa, Hiroshi; Ogasa, Takehiro; Tomioka, Shinji; Kasai, Masaji (Synthesis, 1996)