参考标题:Synthesis Of Novel Nucleo-β-Amino Acids And Nucleobase-Functionalizedβ-Peptides 作者:Arndt M. Brückner,Margarita Garcia,Andrew Marsh,Samuel H. Gellman,Ulf Diederichsen |发布日期:2003.9 摘要:Four Novel β-Amino Acids Bearing The Canonical Nucleobases Guanine, Cytosine, Adenine, And Thymine In The Side Chain, Are Synthesized Starting From Boc-L-Aspartic Acid 4-Benzyl Ester. The Syntheses Are Accomplished In Six Steps By The Nucleophilic Substitution Of (S)-β-(Tert-Butoxycarbonylamino)-δ-Bromopentanoic Acid Benzyl Ester With The Corresponding Nucleobase Derivative As The Key Step. The Guaninyl