Butyrylcholinesterase inhibitors, their formulation, and their use primarily in the treatment of neurodegenerative diseases. These inhibitors generally are phosphates, phosphonates, phosphinates, and phosphoramidates.
These inhibitors can be incorporated in pharmaceutical compositions and administered to a patient in therapeutically effective amounts to treat neurodegenerative diseases.
Single transition state in the transfer of a neutral phosphoryl group between phenoxide ion nucleophiles in aqueous solution
作者:Salem A. Ba-Saif、Mark A. Waring、Andrew Williams
DOI:10.1021/ja00178a040
日期:1990.10
reaction of 4-nitrophenolate ion with the 4-nitrophenyl ester is slightly imbalanced whereby bond formation does not keep up with bond fission in the transition states; the transitionstate, therefore, has some phosphorylium ion character. Transfer of the diethylphosphoryl groupbetween weakly basic oxyanion nucleophiles is probably a concerted process with a transitionstate with more of the character
Butyrylcholinesterase inhibitors, their formulation, and their use primarily in the treatment of neurodegenerative diseases. These inhibitors generally are phosphates, phosphonates, phosphinates, and phosphoramidates. These inhibitors can be incorporated in pharmaceutical compositions and administered to a patient in therapeutically effective amounts to treat neurodegenerative diseases.
Liquid substituted 2H-benzotriazole mixtures are prepared by alkylation with concomitant dealkylation, fragmentation and/or realkylation of 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazoles or of 2-(2-hydroxy-3,5-dialkylphenyl)-2H-benzotriazoles with straight or branched alkenes of 8 to 40 carbon atoms in the presence of an acid catalyst at 100 - 200°C. The liquid mixtures exhibit outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.
The invention relates to a radiation curable composition comprising radiation curable components wherein the composition comprises at least two flame retardants and wherein the flame retardants belong to different classes of compounds, to a process for making three dimensional flame retardant articles and to a three dimensional article, made by rapid prototyping means, that passes the flame retardancy UL-94-V0 test.