Abstract:
:A very mild and efficient procedure has been developed for the preparation of C-5 substituted deoxyuridines. The substituent carries a masked primary aliphatic amino group. These compounds are readily converted into their phosphoramidites and can be used to prepare oligonucleotides carrying one or more aliphatic amino groups. Fluorescein isothiocyanate coupled to these compounds gives oligonucleotide probes carrying multiple fluorescein labels. These compounds have a free 5'-hydroxy group enabling additional 5'- end radioactive labelling for evaluation of their hybridization characteristics. It was found that oligonucleotides carrying a long (11 atom) linker arm to the fluorescein hybridize more efficiently to mRNA than those carrying a short (4 atom) arm. The long linker arm derivatives are comparable to underivatized oligonucleotides in hybridizing to mRNA.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Haralambidis J,Chai M,Tregear GWdoi
10.1093/nar/15.12.4857subject
Has Abstractpub_date
1987-06-25 00:00:00pages
4857-76issue
12eissn
0305-1048issn
1362-4962journal_volume
15pub_type
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