摘要:
2′-Deoxyisoguanosine, isosteric analogues and isoguanosine derivatives of formulae I-V, processes for their production via compounds of the general formulae a or b and reaction with aroyl isocyanates or from compounds of the general formulae VI-IX by photochemical irradiation. A further production process is the conversion of deoxyguanosines or guanosines by means of persilylation, reaction with ammonia and deamination in the 2 position. The compounds are suitable as pharmaceutical agents with antiviral efficacy.
摘要:
The invention concerns compounds which have a chromophore and a group capable of binding to streptavidin or/and avidin and which are suitable for binding to molecules containing an aldehyde, ketone, hemiacetal or/and hemiketal group. In addition the invention concerns conjugates formed from these compounds as well as a method for the detection or isolation of carbohydrates or glycan receptors by means of such conjugates.
摘要:
Process for the production of oligonucleotides of formula II, in which the exocyclic amino groups of the bases adenine, guanine, cytosine, 7-deazaadenine and 7-deazaguanine carry N-phenylacetyl groups, are used for oligonucleotide synthesis, wherein in a first step a starting nucleotide is bound to a solid carrier, subsequently the desired oligonucleotide is synthesized by stepwise coupling with appropriately activated further monomeric nucleotide building blocks of the general formula I with the above-mentioned meanings, if desired, trivalent phosphorus is oxidized to pentavalent phosphorus during and after the synthesis, the oligonucleotide is cleaved from the carrier and the 5' protecting groups are cleaved off. The phenylacetyl functional groups that protect exocyclic NH.sub.2 groups of the bases can be cleaved off in a mild way with penicillin amidohydrolase (EC 3.5.1.11).
摘要:
The present invention is related to compounds comprising six-membered rings capable of being incorporated into nucleic acids. Particularly, the six-membered ring is a derivative of cyclohexane, cyclohexene, tetrahydropyran, tetrahydrothiopyran or piperidine. These compounds may be used to build up oligomeric compounds. The invention is further related to uses of these oligomeric compounds for hybridization and as probes. In addition, methods for the detection of nucleic acids are provided wherein the oligomeric compounds are used.
摘要:
Activated haptens useful for generating immunogens to HIV protease inhibitors, immunogens useful for producing antibodies to HIV protease inhibitors, and antibodies and labeled conjugates useful in immunoassays for the HIV protease inhibitor saquinavir. The novel haptens feature an activated functionality at the central, non-terminal hydroxyl group. Also described are monoclonal antibodies specific for saquinavir having less than 10% cross-reactivity with lopinavir, nelfinavir, amprenavir, ritonavir, and indinavir, and a murine hybridoma producing said antibodies.
摘要:
The invention concerns compounds of the general formula (I) in which the residues R1 to R7 have the meanings given in the application as well as methods for their preparation. The compounds are in particular suitable as substrates for RNA or DNA polymerases and can thus be incorporated into RNA or DNA oligonucleotides and are especially suitable for labelling and detecting nucleic acids or for DNA sequencing
摘要:
The present invention concerns a labelling reagent in which the label is bound via an amide bond and a linker to a residue of the molecule which is essentially characterized in that the N atom of the amide bond and the label are linked together directly by a covalent bond. In particular these are phosphoramidites or reactive supports suitable for nucleic acid synthesis. The invention also concerns processes for the production of such supports from suitable precursors.
摘要:
Oligodeoxyribonucleotides in which at least two 2′-deoxy-&bgr;-D-erythro-pentofuranosyl groups are replaced by 2′-deoxy-&bgr;-D-threo-pentofuranosyl groups at both the 5′ end and 3′ end, and oligodeoxyribonucleotides in which at least 20% of the 2′-deoxy-&bgr;-D-erythro-pentofuranosyl groups in consecutive nucleotide building blocks are replaced by 2′-deoxy-&bgr;-D-threo-pentofuranosyl groups and which are composed of 6 to 100 nucleotide building blocks, are suitable for the inhibition of the expression of viral genes and oncogenes by the antisense principle and can be used for the production of pharmaceutical agents with antiviral activity.
摘要:
The subject matter of the invention is a modified phosphoramidite process for the synthesis of nucleotide sequences. By use of a modified nucleoside phosphoramidite it is possible to produce nucleotide sequences which have a modified phosphate residue.
摘要:
The invention concerns compounds of the general formula (I) in which the residues R1 to R7 have the meanings given in the application as well as methods for their preparation. The compounds are in particular suitable as substrates for RNA or DNA polymerases and can thus be incorporated into RNA or DNA oligonucleotides and are especially suitable for labelling and detecting nucleic acids or for DNA sequencing.