Amino acids having masked amino groups react with amino acids having masked carboxyl groups to form peptide derivatives in good yields if the reaction medium contains an isonitrile. Isonitriles also are effective in causing condensation of amino acids having masked amino groups with compounds having active hydroxyl groups to the corresponding amino acid esters. The yields of the first-mentioned reaction are enhanced if the reaction mixture additionally contains one of the compounds having active hydroxyl groups. Both the peptide derivatives and the amino acid esters of the compounds having active hydroxyl groups are useful for peptide synthesis.
                            如果反应介质含有异腈,则具有遮蔽
氨基团的
氨基酸与具有遮蔽羧基团的
氨基酸反应,可以以良好的产率形成肽衍
生物。 异腈还能有效地引起具有遮蔽
氨基团的
氨基酸与具有活性羟基团的化合物的缩合,形成相应的
氨基酸酯。 如果反应混合物另外还含有具有活性羟基团的化合物之一,则上述反应的产率会得到提高。 具有活性羟基团的化合物的肽衍
生物和
氨基酸酯对于肽合成是有用的。