... Faculty of Pharmaceutical Sciences, University of Tokushima, Sho-machi 1, Tokushima 770, Japan. Masaru Kido. Analytical Chemistry, 2nd Tokushima Inst. of New Drug Res., Otsuka Pharmaceutical Co., Ltd., 463-10 Kagasuno, Kawauchi-cho, Tokushima 771-01, Japan. Received 27 March 1991, Available online 2 March 2001. Abstract. ... Tetrahedron Letters, 26 (1985), p. 331. ... b) M. Shibuya, K. Toyooka, S. Kubota; Tetrahedron Letters, 25 (1984), p. 1171. ...