There are described N-ethylglycine derivatives of the formula I ##STR1## in which PG is a urethane-type or trityl-type amino protective group which is labile to weak acids, X is NH, O or S, Y is CH.sub.2, NH or O, and B' are bases customary in nucleotide chemistry, the exocyclic amino or hydroxyl groups of which being protected by suitable, known protective groups, or are base substitute compounds, and their salts with tert-organic bases, as well as a process for their preparation. The N-ethylglycine derivatives of the formula I are used in the preparation of PNA and PNA/DNA hybrids.
描述了公式I的N-乙基甘
氨酸衍
生物,其中
PG是对弱酸敏感的
脲型或三甲基基
氨基保护基,X为NH、O或S,Y为CH.sub.2、NH或O,B'为核苷酸
化学中常见的碱,其外环
氨基或羟基团被适当的已知保护基保护,或者是基替代化合物,以及它们与叔有机碱的盐,以及它们的制备方法。公式I的N-乙基甘
氨酸衍
生物被用于
PNA和
PNA/DNA杂交物的制备。