中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
O-苯基-N-叔丁基羰基-L-酪氨酸 | N-benzyloxycarbonyl-O-benzyl-L-tyrosine | 16677-29-5 | C24H23NO5 | 405.45 |
Syntheses are described of four peptides with modified leucine-enkephalin sequences in which the native glycylglycyl segment is replaced by an ω-amino acid residue. o-Nitrophenylthio-ω-amino acids were used as intermediates, and it was found that the derivatives of 4-aminobutyric and 5-amino-valeric acids undergo facile intramolecular cyclization under the influence of N,N'-dicyclohexylcarbodiimide.