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(1,3-Dialkyl-5-amino-1H-pyrazol-4-yl)arylmethanones. A series of novel central nervous system depressants.

Abstract：

:A series of novel (1,3-dialkyl-5-amino-1H-pyrazol-4-yl)arylmethanones was synthesized. Pharmacological evaluation of these compounds demonstrated central nervous system depressant activity, potential anticonvulsant properties, and a low order of acute toxicity. In addition, selected compounds showed potential antipsychotic effects. This report focuses on the synthesis and structure-activity relationships of these compounds. (5-Amino-1-ethyl-3-methyl-1H-pyrazol-4-yl)(2-chlorophenyl) methanone (21) was the most active compound against pentylenetetrazole-induced convulsions. (5-Amino-1,3-dimethyl-1H-pyrazol-4-yl)(3-chlorophenyl)methanone (4) also has a favorable anticonvulsant depression ratio. (5-Amino-1,3-dimethyl-1H-pyrazol-4-yl)(3-trifluoromethylphenyl)methan one (8), (5-amino-1,3-dimethyl-1H-pyrazol-4-yl)(3-thienyl)methanone (13), and (5-amino-3-ethyl-1-methyl-1H-pyrazol-4-yl)phenylmethanone (14) are very potent depressants. (5-Amino-1,3-dimethyl-1H-pyrazol-4-yl)(2-thienyl)methanone (12) possessed marked central depressant activity without anticonvulsant activity and without impairment of motor functioning. (5-Amino-1,3-dimethyl-1H-pyrazol-4-yl) (2-fluorophenyl)methanone (2) has a behavioral profile suggestive of antipsychotic activity and gave a positive Ames test result.

journal_name

J Med Chem

journal_title

Journal of medicinal chemistry

authors

Butler DE,Wise LD,DeWald HA

doi

10.1021/jm00377a003

subject

Has Abstract

pub_date

1984-11-01 00:00:00

pages

1396-400

issue

11

eissn

0022-2623

issn

1520-4804

journal_volume

27

pub_type

杂志文章

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