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|Abstract:||6-Phenyl-4H-s-triazolo[4,3-a][1,4]benzodiazepines of the formula (IV): ##SPC1## wherein R is selected from the group consisting of hydrogen, alkyl of 1 to 3 carbon atoms, inclusive, phenyl, benzyl and -COOR' in which R' is alkyl of 1 to 4 carbon atoms, inclusive; wherein R.sub.1 is selected from the group consisting of hydrogen and alkyl of 1 to 3 carbon atoms, inclusive; and wherein R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are selected from the group consisting of hydrogen, alkyl of 1 to 3 carbon atoms, inclusive, halogen, nitro, cyano, trifluoromethyl, and alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoylamino and dialkylamino in which the carbon chain moieties are of 1 to 3 carbon atoms, inclusive, are produced by condensing a 1,3-dihydro-5-phenyl-2H-1,4-benzodiazepine-2-thione of the formula (I): ##SPC2## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are defined as above, with an organic acid hydrazide of the formula: ##EQU1## wherein R is defined as above. The new products of formula IV including their pharmacologically acceptable acid addition salts are useful as sedatives, tranquilizers and muscle relaxants in mammals and birds.|
|Inventor(s):||Hester, Jr.; Jackson B. (Kalamazoo, MI)|
|Assignee:||The Upjohn Company (Kalamazoo, MI)|
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