The design and facile conversion of naturally occurring 4-hydroxyproline to all four diastereomers of thymine pyrrolidine PNA monomer, (2R,4S)-adenine, -guanine and -cytosine monomers and their incorporation into duplex forming PNA oligomers is reported. The interesting results of the hybridization studies with complementary DNA/RNA sequences in either parallel or antiparallel orientation reveal the stereochemistry-dependent DNA vs. RNA discriminations and parallel/antiparallel orientation selectivity.
报道了天然存在的
4-羟基脯
氨酸的设计及其方便转化为胸腺
嘧啶吡咯烷
PNA单体的四种立体异构体,以及(2R,4S)-
腺嘌呤、-
鸟嘌呤和-
胞嘧啶单体的合成,并将其引入到形成双链的
PNA寡聚体中。对互补DNA/RNA序列在平行或反平行方向下的杂交研究得到的有趣结果揭示了立体
化学依赖的DNA与RNA的区分以及平行/反平行方向的选择性。