Cl.NC1NC=C(CO)N=1.C1(C([O-])=C([N+]([O-])=O)C=C([N+]([O-])=O)C=1)[N+]([O-])=O.Cl.Cl.NCCS.[NH2:32][C:33]1[NH:34][CH:35]=[C:36]([CH2:38][S:39][CH2:40][CH2:41][NH2:42])[N:37]=1.[N+:43]([CH:46]=[C:47](SC)[S:48][CH3:49])([O-:45])=[O:44]>>[N+:43]([CH:46]=[C:47]([S:48][CH3:49])[NH:42][CH2:41][CH2:40][S:39][CH2:38][C:36]1[N:37]=[C:33]([NH2:32])[NH:34][CH:35]=1)([O-:45])=[O:44]Reaction of 2-amino-4-hydroxymethylimidazole hydrochloride (which is obtained by treating the picrate salt with hydrochloric acid) with cysteamine hydrochloride and reaction of the resulting 2-amino-4-[(2-aminoethyl)-thiomethyl]imidazole with 1-nitro-2,2-bis-methylthioethylene according to the procedure of Example 8(i) gives 1-nitro-2-methylthio-2-[2-((2-amino-4-imidazolyl)methylthio)-ethylamino]ethylene. Finally, reaction with 2-[(2-aminoethyl)thiomethyl]-3-chloropyridine by the procedure of Example 1 (a)(ii) produces the title compound.
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