Synthesis of Protected Amino Hexitol Nucleosides as Building Blocks for Oligonucleotide Synthesis

Autor: Amit M. Jabgunde, Piet Herdewijn, Swarup De, Leonid Beigelman, Rahul S. Patil, Steven De Jonghe
Rok vydání: 2018
Předmět:
Zdroj: The Journal of Organic Chemistry. 83:15155-15169
ISSN: 1520-6904
0022-3263
Popis: A new synthesis protocol for the preparation of hitherto unknown 1',5'-anhydro-4'-amino-trityl/MMTr hexitol nucleosides has been developed. Key steps in the synthesis of the pyrimidine analogues (U and C) include the regioselective d- allo-hexitol oxirane and 2',4'-anhydronucleoside ring opening by uracil and azide, respectively. A different strategy using a regioselective epoxide ring opening of d- gulo-oxirane, followed by a SN2 type of azidation reaction, has been adopted for the purine analogues (A and G). These compounds can be easily converted to 6'-phosphoramidites for the solid-phase synthesis of N4' → P6' phosphoramidates of amino hexitol nucleic acids (AHNA). ispartof: JOURNAL OF ORGANIC CHEMISTRY vol:83 issue:24 pages:15155-15169 ispartof: location:United States status: published
Databáze: OpenAIRE