1. Y. Natori, T. Kamei and T. Nagasaki,Agric. Biol. Chem., in press.
2. D. R. Threlfall and G. R. Whistance, “Aspects of Terpenoid Chemistry and Biochemistry,” ed. by T. W. Goodwin, Academic Press, London and New York, 1971, pp. 357 ˜ 404.
3. “Biomedical and Clinical Aspects of Coenzyme Q,” ed. by K. Folkers and Y. Yamamura, Elsevier Scientific Publishing Co. Amsterdam, 1977.
4. “Organic Synthesis,” Collective Vol. 3, ed. by E. C. Horming, John Wiley and Sons Inc., New York, 1955, p. 848.
5. “Organic Synthesis,” Collective Vol. 3, ed. by E. C. Horming, John Wiley and Sons Inc., New York, 1955, p. 523.