1. Department of Chemistry, School of Science, Kwansei Gakuin University, Uegahara, Nishinomiya 662, Japan (Y.O.); Department of Pediatrics, The Jikei University School of Medicine, Nishi-Shinbashi, Minato-ku, Tokyo 105, Japan (T. Matsunaga); and Bran + Luebbe, Sendagaya, Shibuya-ku, Tokyo 151, Japan (T. Miura)