HCID 20522501, compound → L-Phenylalanyl-L-valine

Participants

Reaction Steps

According to the same procedure as in Example 1, 1-(methoxycarbonyl-2-methylpropyl)-3-amino-4-phenylazetidin-2-one (458 mg.) was subjected to hydrogenolysis at 50° C. in ethanol (30 ml.) under a hydrogen pressure of one atmosphere in the presence of a 10% Pd-C (175 mg.). The reaction was completed in 12 hours. The same after-treatment as in Example 1 was followed to give methyl ester of phenylalanylvaline (376 mg., yield: 81.5%) which was an oil. The NMR and IR spectra were completely identical with those of the authentic sample obtained in Example 5.

Provenance & Evidence