The disclosure in various embodiments is related to a peptide nucleic acid monomer (VI) and an improved process for preparation of PNA (VI) using nosyl-group containing starting material. The process includes reacting amino acid with a nosyl group. The nosyl protected amino acid is alkylated with 2-(Boc-amino)ethyl bromide to obtain an intermediate. The nosyl group of the obtained intermediate is removed to form a PNA backbone. The PNA backbone upon addition of a modified nucleobase results in the formation of a PNA monomer (VI). The obtained PNA monomer exhibits either chiral or achiral geometric properties.
各种实施例中的披荷核酸单体(VI)及利用含有诺磺基起始物制备
PNA(VI)的改进工艺相关的披荷核酸单体(VI)及其改进工艺。该工艺包括将
氨基酸与诺磺基反应。诺磺保护
氨基酸与2-(Boc-
氨基)乙基
溴烷烷基化以获得中间体。所得中间体的诺磺基被移除以形成
PNA骨架。在添加修饰的核碱基后,
PNA骨架形成
PNA单体(VI)。所得
PNA单体表现出手性或无手性几何特性。