N.sup.4 -substituted cytidines and process for incorporation into an oligonucleotides
First Claim
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1. A modified nucleoside having the formula ##STR6## in which X is a linker containing between 1 and 18 carbon atoms inclusive;
- Y is --S-- or --CO.O--;
Z is S-benzyl, S-p-methoxybenzyl, S-p-nitrobenzyl, S-4-picolyl, S-2-picolyl N-Oxide, S-9-anthrylmethyl, S-diphenylmethyl, S-di(p-methoxyphenyl)methyl, S-triphenylmethyl, S-2,4-dinitrophenyl, S-t-butyl, S-isobutoxymethyl hemithioacetal, S-2-tetrahydropyranyl hemithioacetal, S-acetamidomethyl, S-aminothioacetal, S-cyanomethyl, S-2-nitro-1-phenylethyl, S-2,2-bis(carboethoxy)ethyl, S-benzoyl, S-(N-ethylcarbamyl), and S-ethyl disulfide when Y is --S--; and
methyl, methoxymethyl, methylthiomethyl, tetrahydropyranyl, benzyloxymethyl, phenacyl, N-phthalimidomethyl, 2,2,2-trichloroethyl, 2-haloethyl, 2-(p-toluenesulfonyl)ethyl, t-butyl, cinnamyl, benzyl, triphenylmethyl, bis(o-nitrophenyl)methyl, 9-anthrylmethyl, 2-(9,10-dioxo)anthrylmethyl, piperonyl, trimethylsilyl, t-butyldimethylsilyl, S-t-butyl, 2-alkyl-1,3-oxa-3-olines, N,N-dimethylamide, N-7-nitroindoylamide, hydrazide, N-phenylhydrazide, and N,N-diisopropylhydrazide when Y is --CO.O--;
andeach R1 and R2 is --OH, --SH, or --H;
provided that at least one of R1 and R2 must be --OH or --SH.
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Abstract
An oligonucleotide containing at least one cytidine analog labeled at C4 with a reporter group.
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Citations
11 Claims
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1. A modified nucleoside having the formula ##STR6## in which X is a linker containing between 1 and 18 carbon atoms inclusive;
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Y is --S-- or --CO.O--; Z is S-benzyl, S-p-methoxybenzyl, S-p-nitrobenzyl, S-4-picolyl, S-2-picolyl N-Oxide, S-9-anthrylmethyl, S-diphenylmethyl, S-di(p-methoxyphenyl)methyl, S-triphenylmethyl, S-2,4-dinitrophenyl, S-t-butyl, S-isobutoxymethyl hemithioacetal, S-2-tetrahydropyranyl hemithioacetal, S-acetamidomethyl, S-aminothioacetal, S-cyanomethyl, S-2-nitro-1-phenylethyl, S-2,2-bis(carboethoxy)ethyl, S-benzoyl, S-(N-ethylcarbamyl), and S-ethyl disulfide when Y is --S--; and
methyl, methoxymethyl, methylthiomethyl, tetrahydropyranyl, benzyloxymethyl, phenacyl, N-phthalimidomethyl, 2,2,2-trichloroethyl, 2-haloethyl, 2-(p-toluenesulfonyl)ethyl, t-butyl, cinnamyl, benzyl, triphenylmethyl, bis(o-nitrophenyl)methyl, 9-anthrylmethyl, 2-(9,10-dioxo)anthrylmethyl, piperonyl, trimethylsilyl, t-butyldimethylsilyl, S-t-butyl, 2-alkyl-1,3-oxa-3-olines, N,N-dimethylamide, N-7-nitroindoylamide, hydrazide, N-phenylhydrazide, and N,N-diisopropylhydrazide when Y is --CO.O--;and each R1 and R2 is --OH, --SH, or --H; provided that at least one of R1 and R2 must be --OH or --SH. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification