863592-03-4Relevant academic research and scientific papers
Oligonucleotide synthesis involving deprotection of amidine-type protecting groups for nucleobases under acidic conditions
Ohkubo, Akihiro,Kuwayama, Yasukazu,Nishino, Yudai,Tsunoda, Hirosuke,Seio, Kohji,Sekine, Mitsuo
supporting information; scheme or table, p. 2496 - 2499 (2010/08/07)
Amidine-type protecting groups, i.e., N,N-dimethylformamidine (dmf) and N,N-dibutylformamidine (dbf) groups, introduced into nucleobases were rapidly removed under mild acidic conditions using imidazolium triflate (IMT) or 1-hydroxybenztriazole (HOBt). This new deprotection strategy allowed a 2′-O-methyl-RNA derivative bearing a base-labile group to be efficiently synthesized using a silyl-type linker. It was also found that our new method could be applied to the synthesis of an unmodified RNA oligomer.
Nucleic acid related compounds. 127. Selective N-deacylation of N,O-peracylated nucleosides in superheated methanol
Nowak, Ireneusz,Conda-Sheridan, Martin,Robins, Morris J.
, p. 7455 - 7458 (2007/10/03)
Solutions of peracylated adenosine, cytidine, and related nucleoside derivatives undergo selective N-deacylation upon heating at elevated temperatures (oil bath ≥ 105 °C) in methanol. An increase in the bulk of the N-acyl group has little effect on the rate of N-deacylation but increases the N/O selectivity ratio. Extended heating is required for N-deacylation with arylcarboxylic acid derivatives. Contamination with acidic or basic reagent residues is avoided.
