Oxalic Acid → HCID 70445142, compound

Participants

Reaction Steps

N-Carbobenzoxy-L-alanyl-N-cyclopentylglycyl-L-phenylalanine tert-butyl ester (6.7 g) is dissolved in 100 ml of methanol, and according to the procedure of Reference Example 3, catalytic reduction is conducted in the presence of 1 g of oxalic acid and 1.5 g of 5% palladium-carbon (water content 50%). By the above procedure there is obtained 5.5 g of L-alanyl-N-cyclopentylglycyl-L-phenylalanine tert-butyl ester oxalate as colorless powder.

Provenance & Evidence