N6-Acetyl-2′,3′,5′-tri-O-acetyladenosine; A Convenient, ‘Missed Out’ Substrate for Regioselective N6-Alkylations - Tararov, Vitali I.; Kolyachkina, Svetlana V.; Alexeev, Cyril S.; Mikhailov, Sergey N. (Synthesis, 2011)