1.
Acta Biochim Pol
; 36(3-4): 225-33, 1989.
Artículo
en Inglés
| MEDLINE
| ID: mdl-2485999
RESUMEN
Riboflavin was transformed within six steps into 3-isobutyryl-7,8-dimethyl-10-[2-O-(beta-cyanoethoxy-N,N- diisopropylaminophosphinyl)ethyl]isoalloxazine. This new fluorescent reagent was applied for direct phosphitylation of 5-OH function of protected oligonucleotide assembled on controlled-pore glass support by beta-cyanoethyl phosphoramidite chemistry. As the result of subsequent P(III)----P(V) oxidation and removal of protecting groups with concentrated ammonia, an oligonucleotide 5-labelled with fluorescent flavin moiety could be obtained. Using this procedure 15-mer oligonucleotide of a sequence corresponding to M13 hybridization primer was prepared.