申请人:Kim Kee Sung
公开号:US20050283005A1
公开(公告)日:2005-12-22
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.
该应用涉及一般式(I)的单体,用于制备PNA(肽核酸)寡聚体,并提供了预定义序列PNA寡聚体和随机序列PNA寡聚体的合成方法:其中E为氮或C-R′; J为硫或氧; R′、R1、R2、R3、R4独立地为H、卤素、烷基、硝基、腈基、烷氧基、卤代烷基、卤代烷氧基、苯基或卤代苯基,R5为H或自然或人工α-氨基酸的保护或未保护的侧链; B为自然或人工核苷碱,其中当所述核苷碱具有外环氨基功能时,所述功能被保护基保护,所述保护基对酸敏感但在巯基存在下对弱到中等碱稳定。