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Communication | Regular issue | Vol 14, No. 5, 1980, pp.635-638
Published online, 1st January, 1970
DOI: 10.3987/R-1980-05-0635
An Alternative Synthesis of Dipeptido-Aminobenzophenone and Novel Heterocyclic Formations of Ring-Opened 1,4-Benzodiazepine Derivatives

Kentaro Hirai,* Teruyuki Ishiba, Toshio Fujishita, and Hirohiko Sugimoto

*Shionogi Research Laboratories, Shionogi & Co. Ltd., Fukushima-ku, Osaka 553-0002, Japan


An alternative synthesis of Gly-Gly-N-methylaminobenzophenone (1a) via iodoacetyl glycylaminobenzophenone (2) is described. Novel ring closures of 2 and cyano derivative 3 are also reported.