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Communication | Regular issue | Vol 23, No. 9, 1985, pp.2217-2220
Published online, 1st January, 1970
DOI: 10.3987/R-1985-09-2217
Synthesis and Cyclization of 3-Hydroxalkylidene-2,5-piperazinediones (PDO) to the Corresponding 3-Spiro- and 3,6-Bridged PDO Derivatives

Chung-gi Shin,* Yoshiharu Nakajima, and Yoshiaki Sato

*Departmnet of Applied Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan


Synthesis and cyclization of α-dehydroaspartate derivatives gave 3-hydroxyalkylidene-2,5-piperazinediones (PDO), which were then hydrogenated to give 3-hydroxyalkyl-PDO derivatives. Further cyclization of the two PDOs gave 3-spiro- and 3,6-bridged PDO derivatives.