Patent ID: 6329546
Filing Date: 2001-12-11
Classification: C07C

Abstract:
A caged amino acid expressed by the following formula 1: ##STR20##where X and Y independently represent one kind selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group having a carbon number from 1 to 4, an alkyloxy group having a carbon number from 1 to 4, an alkylamino group having a carbon number from 1 to 4, and a benzo group, and may be identical or different from each other; R.sub.1 represents one kind selected from the group consisting of a hydrogen atom and an alkyl group having a carbon number from 1 to 4; R.sub.2 and R.sub.3 independently represent one kind selected from the group consisting of a hydrogen atom and an alkyl group having a carbon number from 1 to 4, and may be identical or different from each other; A represents an amino acid residue covalenty linked at its .alpha.-amino group and selected from the group consisting of glycine, alanine, valine, leucine, isoleucine, serine, threonine, aspartic acid, glutamic acid, .gamma.-aminobutanoic acid, N-methyl-D-aspartic acid, asparagine, glutamine, lysine, hydroxylysine, arginine, cysteine, cystine, methionine, phenylalaninc, tyrosine, tryptophan, histidine, proline, and 4-hydroxyproline; and M represents one kind selected from the group consisting of a hydrogen atom, an alkali metal, and an alkaline-earth metal.