Anesthetic Potency of Two Novel Synthetic Polyhydric Alkanols Longer than the <i>n</i>-Alkanol Cutoff: Evidence for a Bilayer-Mediated Mechanism of Anesthesia?
作者:Justin T. Mohr、Gordon W. Gribble、Susan S. Lin、Roderic G. Eckenhoff、Robert S. Cantor
DOI:10.1021/jm049459k
日期:2005.6.1
The polyhydroxyalkanes 1,6,11,16-hexadecanetetraol (1) and 2,7,12,17-octadecanetetraol (2) were synthesized utilizing the thiophene ring as a scaffold to affix the hydroxyalkyl chains by lithiation of the acidic alpha-hydrogens and subsequent desulfurization. Both compounds exhibited significant anesthetic potency, individually and in additivity studies with hexanol, using immobility in tadpoles as the phenotypic endpoint. These results, which contradict a protein-binding mechanism in which cutoff results from steric hindrance, are consistent with recent predictions of a membrane-mediated mechanism involving the lateral pressure profile.