Radiation-protective Agents.I. Studies on N-Alkylated-2-(2-aminoethyl)thiopseudoureas and 1, 1-(Dithioethylene)diguanidines

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Abstract
Ten kinds of N-substituted-2-(2-aminoethyl)thiopseudoureas (AETs) were prepared. l[image]-Phenyl-AET (VI)gave 2-aminothiazoline derivative (XXm) with one equivalent of alkali, while other AETs having at least one hydrogen atom at the amino nitrogen underwent intramolecular rearrangement to give MEGs [mercaptoethylguanidines]. GEDs [bis(2-guanidoethyl disulfidej were prepared from these MEGs by mild oxidation. The NMR [nuclear magnetic resonance] and IR infrared spectra of these compounds were also discussed.

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