To a solution of 3.21 g (5 mmol) of 2 in 4 ml CH2Cl2, 1.054 g (5.5 mmol) of EDC HCl and 0.99 g (5.5 mmol) potassium salt of Oxyma in 8 ml CH2Cl2 were added and stirred for 5 min. Then, 5 ml of a solution containing 0.765 g (5.5 mmol) H-Ala-OMe HCl and 1.2 g (11 mmol) Na2CO3 in H2O was added after one min pre- activation. .