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Suritozole
Chemical compound From Wikipedia, the free encyclopedia
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Suritozole (MDL 26,479) is an investigational cognition enhancer. It acts as a partial inverse agonist at the benzodiazepine receptor site on the GABAA ion channel complex, but does not have either anxiogenic or convulsant effects, unlike other BZD inverse agonists such as DMCM.[1] It was investigated for the treatment of depression and Alzheimer's disease in the 90s,[2] but clinical development seems to have been discontinued.
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Synthesis

The reaction between monomethylhydrazine [60-34-4] (1) and methyl isothiocyanate (Trapex) [556-61-6] (2) gave 2,4-dimethylthiosemicarbazide [6621-75-6] (3). Amide formation with 3-fluorobenzoyl chloride [1711-07-5] (4) yielded 1-(3-fluorobenzoyl)-2,4-dimethylthiosemicarbazide [110623-52-4] (5). Cyclization to Suritozole (6).
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References
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