American trypanosomiasis 2 Chagas disease 2 Glutathionylspermidine synthase 2 Trypanosoma cruzi 2 Trypanothione 2 article 2 drug screening 2 drug structure 2 gamma glutamyl alpha benzyl ester leucylgylcyl n 1 butylamide 2 gamma glutamyl alpha benzyl ester leucylgylcyl n 1 heptylamide 2 gamma glutamyl alpha benzyl ester leucylgylcyl n 1 hexylamide 2 gamma glutamyl alpha benzyl ester leucylgylcyl n 1 octylamide 2 gamma glutamyl alpha benzyl ester leucylgylcyl n 1 pentylamide 2 gamma glutamyl alpha benzyl ester leucylgylcyl n 1 propylamide 2 gamma glutamyl alpha benzyl ester leucylgylcyl n ethylamide 2 gamma glutamyl alpha benzyl ester leucylgylcyl n methylamide 2 glutathione derivative 2 glutathionylspermidine synthase 2 n benzyloxycarbonyl gamma glutamyl alpha benzyl ester leucylgylcyl n 1 butylamide 2 n benzyloxycarbonyl gamma glutamyl alpha benzyl ester leucylgylcyl n 1 heptylamide 2 n benzyloxycarbonyl gamma glutamyl alpha benzyl ester leucylgylcyl n 1 hexylamide 2 n benzyloxycarbonyl gamma glutamyl alpha benzyl ester leucylgylcyl n 1 octylamide 2 n benzyloxycarbonyl gamma glutamyl alpha benzyl ester leucylgylcyl n 1 pentylamide 2 n benzyloxycarbonyl gamma glutamyl alpha benzyl ester leucylgylcyl n 1 propylamide 2 n benzyloxycarbonyl gamma glutamyl alpha benzyl ester leucylgylcyl n ethylamide 2 n benzyloxycarbonyl gamma glutamyl alpha benzyl ester leucylgylcyl n methylamide 2 nonhuman 2 peptide synthesis 2 spermidine synthase 2 tripeptide derivative 2