申请人:Hoechst Aktiengesellschaft
公开号:US06121418A1
公开(公告)日:2000-09-19
PNA synthesis using a base-labile amino protecting group Processes are described for preparing PNA oligomers, ##STR1## in which R.sup.0 is hydrogen, alkanoyl, alkoxycarbonyl, cycloalkanoyl, aroyl, heteroaroyl, or a group which favors the intracellular uptake of the oligomer, A and Q are amino acid residues, k and 1 are 0 to 20, n is 1-50, B is a nucleotide base which is customary in nucleotide chemistry, and Q.sup.0 is OH, NH.sub.2, or alkylamino which can be substituted by OH or NH.sub.2. In these processes, the amino acid residues and the structural components ##STR2## in which PG is a base-labile amino protecting group and B' is a nucleotide base which is protected on its exocyclic amino function, are coupled step-wise, in accordance with the solid-phase method, onto a polymeric support which is provided with an anchor group, and, after the construction is complete, the target compounds are cleaved from the polymeric support using a cleaving reagent. Intermediates of the PNA oligomers are also described, as are processes for their preparation.
使用一种易碱性氨基保护基团进行PNA合成。描述了制备PNA寡聚体的过程,其中R.sup.0为氢、烷酰基、烷氧羰基、环烷酰基、芳酰基、杂环芳酰基或有利于寡聚体细胞内摄取的基团,A和Q为氨基酸残基,k和l为0至20,n为1-50,B为核苷酸化学中常见的核苷酸碱基,Q.sup.0为OH、NH.sub.2或可被OH或NH.sub.2取代的烷基氨基。在这些过程中,氨基酸残基和结构组分##STR2##其中PG为易碱性氨基保护基团,B'为保护在其外环氨基功能上的核苷酸碱基,按照固相法逐步耦合到具有锚定基团的聚合物支持体上,并在构建完成后,使用裂解试剂从聚合物支持体中将目标化合物解离。还描述了PNA寡聚体的中间体,以及它们的制备过程。