反应详情

N-Benzyloxycarbonyl-D-alanyl-α-L-aspartyl-D-alanine isopropyl ester (2.5 g) was dissolved in 100 ml of 80% aqueous acetic acid, and the solution was subjected to catalytic reduction in a hydrogen gas stream at room temperature for four hours using palladium/carbon as catalyst. After filtering off the catalyst, the filtrate was concentrated to dryness under reduced pressure, affording 1.6 g of white powder. M.p.: 219°-221° C.

1. filtrationAfter filtering off the catalyst
2. concentrationthe filtrate was concentrated to dryness under reduced pressure