Biochemical basis for differences in metabolism-dependent genotoxicity by two diazinylpiperazine-based 5-HT2C receptor agonists
摘要:
The biochemical basis for S9-dependent mutagenic response of the 5-HT2C receptor agonist and diazinylpiperazine derivative 1 in the Salmonella Ames assay involves P450-mediated bioactivation to DNA-reactive quinone-methide, aldehyde and nitrone intermediates. Mechanistic information pertaining to the metabolism of 1 was used in the design of diazinylpiperazine 5 to eliminate the safety liability. While 5 was negative in the Ames assay, the compound retained the ability of 1 to form certain electrophilic intermediates. Plausible hypotheses that can collectively account for the differences in mutagenic response of the two piperazine analogs are discussed. (C) 2009 Elsevier Ltd. All rights reserved.
[EN] PYRIDINE CARBOXYLIC ACID DERIVATIVES AS GLUCOKINASE MODULATORS<br/>[FR] DERIVES D'ACIDES CARBOXYLIQUE DE PYRIDINE EN TANT QUE MODULATEURS DE LA GLUCOKINASE
申请人:ASTRAZENECA AB
公开号:WO2005044801A1
公开(公告)日:2005-05-19
A compound of Formula (I): wherein: A is phenyl or a 5- or 6-membered heteroaryl ring, optionally substituted; R1 and R2 are selected from hydrogen and methyl; with the proviso that at least one of R1 and R2 is methyl; or a salt, pro-drug or solvate thereof, are described. Their use as GLK activators, pharmaceutical compositions containing them, and processes for their preparation are also described.
PYRIDINE CARBOXYLIC ACID DERIVATIVES AS GLUCOKINASE MODULATORS
申请人:Caulkett William Rodney Peter
公开号:US20070078168A1
公开(公告)日:2007-04-05
A compound of Formula (I): wherein: A is phenyl or a 5- or 6-membered heteroaryl ring, optionally substituted; R
1
and R
2
are selected from hydrogen and methyl; with the proviso that at least one of R
1
and R
2
is methyl; or a salt, pro-drug or solvate thereof, are described. Their use as GLK activators, pharmaceutical compositions containing them, and processes for their preparation are also described.
Nitrilases, Nucleic Acids Encoding Them and Methods for Making and Using Them
申请人:DeSantis Grace
公开号:US20100273659A1
公开(公告)日:2010-10-28
The invention relates to nitrilases and to nucleic acids encoding the nitrilases. In addition methods of designing new nitrilases and method of use thereof are also provided. The nitrilases have increased activity and stability at increased pH and temperature.
The invention relates to nitrilases and to nucleic acids encoding the nitrilases. In addition, methods of designing new nitrilases and methods of use thereof are also provided. The nitrilases have increased activity and stability at increased pH and temperature.