1: N-(carbobenzyloxy)-glycine With 4-methyl-morpholine in tetrahydrofuran T=-78°C; 0.0333333 h; 2: With isobutyl chloroformate in tetrahydrofuran T=-78°C; 0.0333333 h; 3: methylamine in tetrahydrofuran T=-78 - 20°C; 1.25 h;

triethylamine in dichloromethane Ambient temperature;

(i) ClCO2Et, Et3N, THF, (ii) /BRN= 3588822/, H2O; Multistep reaction;

(i) carbonyldiimidazole, THF, (ii) /BRN= 1737290/, (iii) H2O; Multistep reaction;

hydrogen; palladium 10 on activated carbon in methanol T=20°C; P=760.051 Torr; 3 h;

hydrogen; toluene-4-sulfonic acid 1.) MeOH; 2.) pyridine, -15 deg C, 15 min; Multistep reaction;