RNA sequences having up to three consecutive internal amide linkages were synthesized and studied using UV and NMR spectroscopy. The amide modifications did not interfere with normal base-pairing and A-type RNA conformation. Three consecutive amides were well tolerated in the passenger strand of siRNA and caused little change in RNAi activity.
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| http://dx.doi.org/10.1039/c3ob42532k | DOI Listing |
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