... Bull., 28, 3719 (1980); T. Nagano, K. Arakane, and M. Hirobe, Tetrahedron Lett, 1980, 5021; N ... 1—8—14 Saragadai, Kanda, Chiyoda-ka, Tokyo, 101, japan ETSU KATORI Faculty of Pharmaceutical Sciences, TETSUO N AG ANO Uni”675ity of TOkyo' TAKEHISA KUNIEDA 7— ...