Starting from glycidol, the synthesis of dimethoxytritylated glycol nucleoside phosphoramidites of adenine (A), thymine (T), uracil (U), guanine (G), and cytosine (C) is reported. These phosphoramidites are the building blocks for the automated solid phase synthesis of glycol nucleic acids (GNA) oligonucleotides and it is demonstrated that derived GNA duplexes with completely acyclic backbones considerably exceed the thermal stabilities of analogous DNA duplexes.
GNA - glycol nucleic acid - glycol nucleotides - acyclic nucleic acid backbone - epoxide ring opening