Synthesis of N-Boc-α-amino acids with nucleobase residues as building blocks for the preparation of chiral PNA (peptidic nucleic acids)
作者:Alessandro Lenzi、Gianna Reginato、Maurizio Taddai
DOI:10.1016/0040-4039(95)00052-e
日期:1995.3
N-Boc-Glutamic acid α-benzyl ester was transformed into 4-bromo-2-(tert-butoxycarbonylamino)-butyric acid benzyl ester using the Barton-Crich protocol. This bromo derivative undergoes nucleophilic substitution with nucleobases to give optically active N-Boc-4-adeninbutyrine (Boc-Aby), N-Boc-4-thyminbutyrine (Boc-Tby), N-Boc-4-guaninbutyrine (Boc-Gby) or N-Boc-4-cytosinbutyrine (Boc-Cby), useful building
使用Barton-Crich方案将N-Boc-谷氨酸α-苄基酯转化为4-溴-2-(叔丁氧基羰基氨基)-丁酸苄基酯。该溴代衍生物经核碱基进行亲核取代,得到旋光的N-Boc-4-腺嘌呤丁胺(Boc-Aby),N-Boc-4-胸腺嘧啶(Boc-Tby),N-Boc-4-鸟嘌呤丁胺(Boc-Gby)或N-Boc-4-cytosinbutyrine(Boc-Cby),它们是合成手性肽核酸(PNA)的有用组成部分。