... of Ethane-1,2-diamines MASAICHIRO MASU1,* YOSHIYUKI KAMADA, HIDEKO NISHIDA, and SHIGEKO OZAKI Faculty of Pharmaceutical Sciences, Osaka ... 4), N,N-diethylethylenediamine (5) and MN '— diethylethylenediamine were purchased from Aldrich Chemical Co. ... Vol. ...