4,5-BIS(ETHOXYCARBONYL)-[1,3]DIOXOLAN-2-YL AS A NEW ORTHOESTER-TYPE PROTECTING GROUP FOR THE 2′-HYDROXYL FUNCTION IN THE CHEMICAL SYNTHESIS OF RNA
作者:Boleslaw Karwowski、K. Seio、M. Sekine
DOI:10.1081/ncn-200061895
日期:2005.4.1
,3]dioxolan-2-yl as a newprotecting for the 2′-hydroxyl function. Our cyclic orthoester-type group is compatible with the DMTr strategy for oligonucleotide synthesis. This group was introduced to the 2′-hydroxylgroup of appropriately protected nucleoside derivatives in good yields under mild acidic conditions. Post-synthetic conversion of the moiety of this protectinggroup with an amine resulted