Three stable silanetriols with increasing steric protection of the silicon atom have been tested for inhibition of acetylcholinesterase (AChE). For all tested silanetriols we found reversible inhibition of the AChE activity at a 100 mu M concentration. The highest inhibition rate was found for the sterically least hindered cyclohexylsilanetriol with 45% inhibition relative to galanthamine hydrobromide for which an IC50 value of 121 +/- 3 mu M was determined as well. The cytotoxicity of the silanetriols used was found to be negligible at concentrations relevant for inhibition. (C) 2010 Elsevier Ltd. All rights reserved.
A high yield synthesis of the first silanedithiolate silanolate is reported which spontaneously assembles forming an inorganic rugby ball shaped 32 vertex polyhedral cluster stabilized by sterically demanding 2,6-dimesitylphenyl substituents and two LiCl units.
6-triiso-propylphenyl)phenyl) stabilized by the N-heterocycliccarbene (NHC) ImMe4 is reported. The synthesis of stabilized hydridosilylenes 3 was accomplished by a previously unknown NHC-induced fragmentation of silanorbornadiene derivatives. Structuralstudies of the stabilized silylenes 3 and of its Fe(CO)4 complex 12 accompanied by a theoretical analysis of their bonding situation indicate that
Three stable silanetriols with increasing steric protection of the silicon atom have been tested for inhibition of acetylcholinesterase (AChE). For all tested silanetriols we found reversible inhibition of the AChE activity at a 100 mu M concentration. The highest inhibition rate was found for the sterically least hindered cyclohexylsilanetriol with 45% inhibition relative to galanthamine hydrobromide for which an IC50 value of 121 +/- 3 mu M was determined as well. The cytotoxicity of the silanetriols used was found to be negligible at concentrations relevant for inhibition. (C) 2010 Elsevier Ltd. All rights reserved.