110522-75-3Relevant articles and documents
Ultrafast cleavage and deprotection of oligonucleotides synthesis and use of C(Ac) derivatives
Reddy,Hanna, Naeem B.,Farooqui, Firdous
, p. 1589 - 1598 (2007/10/03)
We have investigated the use of alkylamines as fast cleavage and deprotection reagents for the solid phase synthesis of oligonucleotides and found methylamine/ammonium hydroxide (or methylamine) as an efficient reagent. The transamination side product formed with the commonly used dC(b2) has been eliminated by the use of dC(Ac) phosphoramidite. This system has successfully been used in the synthesis of oligonucleotides and oligonucleoside phosphorothioates. DMT dC(Ac) hydrogen phosphonate and DMT ribo C(Ac)-2'-OMe phosphoramidite also have been prepared and used in the synthesis of oligonucleotides.
FACILE REMOVAL OF NEW BASE PROTECTING GROUPS USEFUL IN OLIGONUCLEOTIDE SYNTHESIS
Schulhof, J. C.,Molko, D.,Teoule, R.
, p. 51 - 54 (2007/10/02)
New base protecting groups are proposed in place of benzoyl and isobutyryl groups.They are phenoxy acetyl for adenine and guanine and isobutyryl for cytosine.They are cleaved in aqueous ammonia in a shorter time at lower temperature.These easily removable groups are useful in the synthesis of modified oligonucleotides, containing fragile bases.