... The starting material, JV-carbobenzoxy-(a-/>- 1) S. Akabori, S. Sakakibara and Y. Shimonishi, This Bulletin, 34, 739 (1961); 35, 1966 (1962). ... 202 Yasutsugu Shimonishi [Vol. 37, No. ... Division of Organic Chemistry Institute for Protein Research Osaka University Kita-ku, Osaka