1. A. I. Usov and A. O. Chizhov,Bioorg. Khim., 1989,15, 208 [Sov. J. Bioorg. Chem., 1989,15, 118 (Engl. Transl.)].
2. D. J. Manners and R. J. Sturgeon, inEncyclopedia of Plant Physiology, New Series,13A, Eds. F. A. Loewus and W. Tanner, Springer-Verlag, Berlin-Heidelberg-New York, 1982, 472.
3. A. S. Shashkov, D. Sci. (Chem.) Thesis, N. D. Zelinsky Institute of Organic Chemistry, Moscow, 1983.
4. N. M. Shevchenko, L. A. Elyakova, and T. N. Zvyagintseva,Carbohydr. Res., 1986,148, 57.
5. F. Nanyo, T. Usui, and T. Suzuki,Agric. Biol. Chem., 1984,48, 1523.