The Position of The Water Solubilizing Group
In order to preserve the type of activity exhibited by the lead compound, the water solubilizing group should be attached to a part of the structure that is not involved in the drug–receptor interaction. Consequently, the route used to introduce a new water solubilizing group and its position in the lead structure will depend on the relative reactivities of the pharmacophore and the rest of the molecule. The reagents used to introduce the new water solubilizing group should be chosen on the basis that they do not react with, or in close proximity to, the pharmacophore. This will reduce the possibility of the new group affecting the relevant drug–receptor interactions.
Read more about this topic: Molecular Modification
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