A Convenient Route to <i>N</i>-[2-(Fmoc)aminoethyl]glycine Esters and PNA Oligomerization Using a Bis-<i>N</i>-Boc Nucleobase Protecting Group Strategy
作者:Filip Wojciechowski、Robert H. E. Hudson
DOI:10.1021/jo800195j
日期:2008.5.1
A simple and practical synthesis of the benzyl, allyl, and 4-nitrobenzyl esters of N-[2-(Fmoc)aminoethyl]glycine is described starting from the known N-(2-aminoethyl)glycine. These esters are stored as stable hydrochloride salts and were used in the synthesis of peptide nucleic acid monomers possessing bis-N-Boc-protected nucleobase moieties on the exocyclic amino groups of ethyl cytosin-1-ylacetate
描述了从已知的N-(2-氨基乙基)甘氨酸开始的N- [2-(Fmoc)氨基乙基]甘氨酸的苄基,烯丙基和4-硝基苄基酯的简单而实用的合成。这些酯以稳定的盐酸盐形式储存,用于合成在胞嘧啶-1-基乙酸乙酯,腺嘌呤-9-乙酸乙酯和乙酯的环外氨基上具有双-N -Boc保护的核碱基部分的肽核酸单体(O 6-苄基鸟嘌呤-9-基)乙酸盐。酯水解后,将相应的核碱基乙酸与N- [2-(Fmoc)氨基乙基]甘氨酸苄基酯或N- [2-(Fmoc)氨基乙基]甘氨酸烯丙基酯偶联,以保留N- [2-(Fmoc)氨基乙基]甘氨酸烯丙基酯。鸟嘌呤的O 6苄基醚保护基。Fmoc /双-N -Boc保护的单体已成功用于混合序列10-mer PNA低聚物的Fmoc介导的固相肽合成,并被证明是目前使用最广泛的Fmoc / Bhoc-保护的肽核酸单体。