This application relates to monomers of the general formula (I) for the preparation of PNA (peptide nucleic acid) oligomers and provides method for the synthesis of both predefined sequence PNA oligomers and random sequence PNA oligomers:
wherein E is nitrogen or C—R′; J is sulfur or oxygen; R′, R1, R2, R3, R4 is independently H, halogen, alkyl, nitro, nitrile, alkoxy, halogenated alkyl, halogenated alkoxy, phenyl or halogenated phenyl, R5 is H or protected or unprotected side chain of natural or unnatural α-amino acid; and B is a natural or unnatural nucleobase, wherein when said nucleobase has an exocyclic amino function, said function is protected by protecting group which is labile to acids but stable to weak to medium bases in the presence of thiol.
该应用程序涉及一般式(I)的单体,用于制备
PNA(肽核酸)寡聚体,并提供预定义序列
PNA寡聚体和随机序列
PNA寡聚体的合成方法:其中E是氮或C-R′; J是
硫或氧; R′、R1、R2、R3、R4独立地是H、卤素、烷基、硝基、腈、烷氧基、卤代烷基、卤代烷氧基、苯基或卤代苯基,R5是H或保护或未保护的天然或非天然
α-氨基酸侧链; B是天然或非天然的核碱基,其中当所述核碱基具有外环
氨基功能时,所述功能由对弱到中等碱稳定但对酸敏感的保护基保护。