1: With 4-methyl-morpholine; hydroxylamine Wang resin; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 0.5 h; 2: With piperidine in N,N-dimethyl-formamide 0.166667 h; 3: With trifluoroacetic acid in dichloromethane T=20°C; 0.5 h; Further stages.;