The base moiety of 1-N-methyladenosine can be protected with a chloroacetyl group for incorporation of this modified nucleoside into DNA and RNA. Carefully controlled anhydrous conditions are needed for deprotection of the oligonucleotides.
Laboratory of Medicinal Chemistry, Rega Institute for Medical Research, Katholieke Universiteit Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium.
