Synthesis of peptide nucleic acids (PNAs) is reported with new pyridazine-type nucleobases: 3-aminopyridazine (aPz) and 1-aminophthalazine (aPh) as cytosine analogs, and pyridazin-3-one (PzO) and phthalazin-1-one (PhO) as thymine analogs. The PNAs having an aPz or a PzO formed duplexes with each complementary oligodeoxynucleotide forming a base pair with G or A, respectively, as evaluated by using
肽
核酸(
PNA)的合成据报道有新的
哒嗪类核碱基:
胞嘧啶类似物3-
氨基
哒嗪(aPz)和1-
氨基
酞嗪(aPh),以及
哒嗪-3-one(Pz O)和
酞嗪-1-one (Ph O)作为胸腺
嘧啶类似物。通过使用紫外熔解分析和圆二色性(CD)光谱评估,具有aPz或Pz O的
PNA形成双链体,每个互补的寡聚
脱氧核苷酸分别与G或A形成碱基对。