Deprotection of t-Butyl Esters of Amino Acid Derivatives by Nitric Acid in Dichloromethane
作者:Paolo Strazzolini、Massimo Scuccato、Angelo G Giumanini
DOI:10.1016/s0040-4020(00)00280-5
日期:2000.5
selected N-Z-derivatives of natural amino acidesters was investigated. The method was found to work effectively with alanine, phenylalanine, serine and the dipeptide aspartame, but the reagent brought about a number of unwanted transformations with tyrosine, methionine and tryptophan. Suitable protection of functions present in the latter ones allowed selective ester dealkylation, but tyrosine underwent