[1] Zhang YY, Guo YZ, Onda M, Hashimoto K, Ikeya Y, Okada M, Maruno M. Phytochemistry, 1994, 35: 511. [2] Kikuchi Y, Miyaichi Y, Yamaguchi Y, Kizu H, Tomimori T. Chem Pharm Bull, 1991, 39: 1047. [3] Aritomi M, Kawasaki T. Chem Pharm Bull, 1984, 32: 2676. [4] Koeppen BH, Roux DG. Biochem J, 1965, 97: 444. [5] Österdahl BG. Acta Chem Scand (B), 1978, 32: 93. [6] Prox A. Tetrahedron, 1968, 24: 3697. |