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Bioorg Med Chem Lett
2008 Jan 15;182:645-9. doi: 10.1016/j.bmcl.2007.11.069.
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Block of cyclic nucleotide-gated channels by tetracaine derivatives: role of apolar interactions at two distinct locations.
Strassmaier T
,
Kirk SR
,
Banerji T
,
Karpen JW
.
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A series of new tetracaine derivatives was synthesized to explore the effects of hydrophobic character on blockade of cyclic nucleotide-gated (CNG) channels. Increasing the hydrophobicity at either of two positions on the tetracaine scaffold, the tertiary amine or the butyl tail, yields blockers with increased potency. However, shape also plays an important role. While gradual increases in length of the butyl tail lead to increased potency, substitution of the butyl tail with branched alkyl or cyclic groups is deleterious.
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