Annika Kers, Tomas Szabó and Jacek Stawinski
Efficient synthesis of suitably protected 2′-deoxycytidine, 2′-deoxyadenosine, and 2′-deoxyguanosine derivatives bearing the 5′-methylenephosphonate moiety with the 4-methoxy-1-oxido-2-picolyl function as an intramolecular nucleophile catalytic group is described.