Page 1. CHEMISTRY LETTERS, pp. 1371-1372, 1983. (C) The Chemical Society of Japan 1983 INTENTIONAL SYNTHESES OF UTAHIN, A CONIFER CONSTITUENT OF A C20-DITROPONOFURAN, VIA THE OXIDATIVE CONDENSATION Hitoshi TAKESHITA,* Tomoyuki KUSABA, † and Akira MORI Research Institute of Industrial Science, 86, Kyushu University, Sakamoto, Kasuga, Fukuoka 816 ...