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For the NMR-spectroscopy-guided discovery of RNA binders, see: a
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For the NMR-spectroscopy-guided discovery of RNA binders, see: a) L. Yu, T. K. Oost, J. M. Schkeryantz, J. Yang, D. Janowick, S. W. Fesik, J. Am. Chem. Soc. 2003, 125, 4444-4450;
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3342966009
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The use of this target-observation strategy (as opposed to ligand-observation schemes, such as saturation transfer) is essential to filter out promiscuous binders, which interact through nonspecific electrostatic interactions with the highly charged nucleic acid. Promiscuous binders cause a general broadening of the NMR spectrum of the target, whereas specific binders induce only peak shifts, which allow the identification of the binding site. For a general review, see: H. O. Villar, J. Yan, M. R. Hansen, Curr. Opin. Chem. Biol. 2004, 8, 387-391.
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The use of this "target-observation" strategy (as opposed to ligand-observation schemes, such as saturation transfer) is essential to filter out promiscuous binders, which interact through nonspecific electrostatic interactions with the highly charged nucleic acid. Promiscuous binders cause a general broadening of the NMR spectrum of the target, whereas specific binders induce only peak shifts, which allow the identification of the binding site. For a general review, see: H. O. Villar, J. Yan, M. R. Hansen, Curr. Opin. Chem. Biol. 2004, 8, 387-391.
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For the NMR spectroscopic assignment of imino groups, see
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34250752387
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Lys3 ligands. However, they are too complex for a fragment-based approach. In contrast, compound 1 is an excellent 2-deoxystreptamine surrogate in the design of RNA-friendly compounds: L. Micouin, F. P. Dardel, C. Tisne-Vicrobeck, F. Maurice, M. Bonin, A. Perez Luna, C. J. Bournaud, G. Bégis, WO2006024784, 2006.
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Lys3 ligands. However, they are too complex for a fragment-based approach. In contrast, compound 1 is an excellent 2-deoxystreptamine surrogate in the design of "RNA-friendly" compounds: L. Micouin, F. P. Dardel, C. Tisne-Vicrobeck, F. Maurice, M. Bonin, A. Perez Luna, C. J. Bournaud, G. Bégis, WO2006024784, 2006.
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S. Yoshizawa, D. Fourmy, R. G. Eason, J. D. Puglisi, Biochemistry 2002, 41, 6263-6270; see also reference [7].
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a) S. Yoshizawa, D. Fourmy, R. G. Eason, J. D. Puglisi, Biochemistry 2002, 41, 6263-6270; see also reference [7].
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27
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0037123618
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Both enantiomerically enriched (e.r, 93/7) isomers of compound 17 f were prepared. The dissociation constant Kd, 1.2 ± 0.6) μM was found for (R)-17 f with tRNA Lys3 at an ionic strength of 150 mM KCl, and K d, 1.1±0.7) μM was found for (S)-17 f under the same conditions. Thus, the interaction with tRNALys3 is not stereospecific, and racemic ligands can be used in this approach. For the enantioselective preparation of 1, see: a) A. Pérez Luna, M.-A. Ceschi, M. Bonin, L. Micouin, H.-P. Husson, S. Gougeon, G. Estenne Bouthou, B. Marabout, M. Sevrin, P. George, J. Org. Chem. 2002, 67, 3522-3524;
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Lys3 is not stereospecific, and racemic ligands can be used in this approach. For the enantioselective preparation of 1, see: a) A. Pérez Luna, M.-A. Ceschi, M. Bonin, L. Micouin, H.-P. Husson, S. Gougeon, G. Estenne Bouthou, B. Marabout, M. Sevrin, P. George, J. Org. Chem. 2002, 67, 3522-3524;
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