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netLibrary - eBook Summary Structure-based Drug Design by ...

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accommodate a variety of different hydrogen-bonding groups in the C ring of the drug (Figure 10).<br />

Page 510<br />

This hydrogen-bonding network has also been observed in all classes of capsid-binding compounds that<br />

have had their structures determined in HRVs [58,62]. Reports of compounds that bind to the capsid and<br />

inhibit picornavirus uncoating, but would seem to have little hydrogen-bonding potential (e.g.,<br />

dichloroflavan) have not been structurally examined [60]. The effect of adding a hydrogen-bonding<br />

group to these compounds near the pocket pore is unknown, but one might expect that the potency of the<br />

compound would improve. Remember that WIN compounds without a hydrogen-bonding group at the<br />

pore region still have antiviral activity, albeit this activity is much weaker than that of an analogous drug<br />

with the hydrogen-bonding group present.<br />

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