合成条件:Stage #1: With piperidine In N,N-dimethyl-formamide at 20℃; for 0.83 h; Stage #2: With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane; N,N-dimethyl-formamide at 20℃; for 16 h; Stage #3: With trifluoroacetic acid In dichloromethane; N,N-dimethyl-formamide for 1 h;