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Convulsant properties of L-glutamic acid di-tert butyl ester
Abstract:
Glutamic acid di-tert butyl ester (GTBE) was found to have a pronounced convulsant effect in mice and rats, producing recurrent clonic convulsions combined with postural and respiratory disturbances in a dosage of 0.5 mmol/kg (148 mg/kg). Tert-butyl ester derivatives of aspartic acid and alanine, and glutamic acid gamma-benzyl ester did not produce seizures. Various other glutamate esters, such as glutamic acid diethyl ester and glutamic acid dimethyl ester, have previously been found to have anticonvulsant effects, and also do not induce seizures. It is suggested that glutamic acid di-tert butyl ester may have specific pharmacological properties which differ from those of other known convulsant drugs.
Insights
Glutamic acid di-tert butyl ester (GTBE) induced significant convulsant effects in rodents at a dosage of 0.5 mmol/kg. Unlike other glutamate esters, GTBE exhibits unique pharmacological properties, potentially differing from known convulsant drugs.
Area of Science:
- Neuropharmacology
- Toxicology
- Organic Chemistry
Background:
- Glutamate esters are known to possess diverse pharmacological activities.
- Some glutamate esters exhibit anticonvulsant properties, while others have different effects.
- The specific effects of glutamic acid di-tert butyl ester (GTBE) on the central nervous system were not well-characterized.
Purpose of the Study:
- To investigate the convulsant potential of glutamic acid di-tert butyl ester (GTBE) in animal models.
- To compare the effects of GTBE with other glutamate ester derivatives.
- To explore the unique pharmacological profile of GTBE.
Main Methods:
- Administration of glutamic acid di-tert butyl ester (GTBE) to mice and rats at a dosage of 0.5 mmol/kg.
- Observation and documentation of behavioral changes, including convulsions, postural disturbances, and respiratory effects.
- Comparative analysis with other structurally related glutamate esters, such as tert-butyl ester derivatives of aspartic acid and alanine, glutamic acid gamma-benzyl ester, diethyl ester, and dimethyl ester.
Main Results:
- Glutamic acid di-tert butyl ester (GTBE) demonstrated a pronounced convulsant effect in mice and rats.
- The observed effects included recurrent clonic convulsions, postural disturbances, and respiratory issues at 0.5 mmol/kg.
- Other tested glutamate esters, including tert-butyl derivatives and diethyl/dimethyl esters, did not induce seizures, with some previously shown to have anticonvulsant effects.
Conclusions:
- Glutamic acid di-tert butyl ester (GTBE) possesses significant convulsant properties in rodents.
- GTBE's pharmacological profile appears distinct from other tested glutamate esters, including those with anticonvulsant activity.
- Further research is warranted to elucidate the specific mechanisms underlying GTBE's unique convulsant effects.