1: 3-hydroxyquinaldic acid With 4-(N,N-dimethlyamino)pyridine; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride in dichloromethane T=25°C; 0.5 h; 2: (1R,7S,11S,14R,20S,24S)-7,20-Diamino-2,12,15,25-tetramethyl-11,24-bis-methylsulfanylmethyl-9,22,28,29-tetrathia-2,5,12,15,18,25-hexaaza-bicyclo[12.12.4]triacontan-3,6,10,13,16,19,23,26-octaone in dichloromethane T=25°C; 72 h; Further stages.;