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:
1
wherein
R1, R2, R3, R4, R5 is independently H, halogen, C
1
-C
4
alkyl, nitro, nitrile, C
1
-C
4
alkoxy, halogenated C
1
-C
4
alkyl, or halogenated C
1
-C
4
alkoxy, wherein at least one of R1, R3, and R5 is nitro;
R6 is H or protected or unprotected side chain of natural or unnatural &agr;-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.
这个应用程序涉及通式(I)的单体,用于制备
PNA(肽核酸)寡聚体,并提供了合成预定义序列
PNA寡聚体和随机序列
PNA寡聚体的方法:其中R1、R2、R3、R4、R5独立地为H、卤素、C1-C4烷基、硝基、腈基、C1-C4烷氧基、卤代C1-C4烷基或卤代C1-C4烷氧基,其中至少有一个R1、R3和R5为硝基;R6为H或天然或非天然
α-氨基酸的保护或未保护侧链;B为天然或非天然核碱基,当所述核碱基具有外环
氨基功能时,所述功能由对酸敏感但对弱到中等碱稳定的保护基保护。