Page 1. CHEMISTRY LETTERS, pp. 1635-1638, 1980. C The Chemical Society of Japan 1980 STRUCTURES OF EFFUSANINS, ANTIBACTERIAL DITERPENOIDS FROM RABDOSIA EFFUSA Tetsuro FUJITA, Yoshio TAKEDA, Tetsuro SHINGU*, and Akira UENO** Faculty of Pharmaceutical Sciences, The University of Tokushima, Tokushima 770 *Faculty of Pharmaceutical Sciences, Kobe-Gakuin University, Tarumi-ku, Kobe 673 ...