abstract |
Compounds of the formula al WHEREIN R is hydrogen, methyl or acetyl, and R1 and R2 are each hydrogen, methyl, ethyl, n-propyl or isopropyl, or, together with each other, 1,4-butylene, AND NON-TOXIC, PHARMACOLOGICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF; THE COMPOUNDS AS WELL AS THEIR SALTS ARE USEFUL AS OPIATE ANTAGONISTS, ANALGESICS AND ANTITUSSIVES. |