1: With AgroPore(R); N-ethyl-N,N-diisopropylamine in dichloromethane; N,N-dimethyl-formamide T=20°C; 12 h; 2: With ammonia; lithium in tetrahydrofuran 1 h; Heating; 3: With trifluoroacetic acid in methanol; dichloromethane T=20°C; 0.25 h;

1: With AgroPore(R); N-ethyl-N,N-diisopropylamine in dichloromethane; N,N-dimethyl-formamide T=20°C; 12 h; 2: With trifluoroacetic acid in methanol; dichloromethane T=20°C; 0.25 h;