| 摘要 |
Compounds of the formula WHEREIN R is hydrogen, methyl or acetyl, R1 is methyl, phenyl, or hydrogen, Z is -CH=CH- or -CH2-CH2-, Y is oxygen or sulfur, and R3 is hydrogen or methyl, AND NON-TOXIC, PHARMACOLOGICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF; THE COMPOUNDS AS WELL AS THEIR SALTS ARE USEFUL AS ANALGESICS AND ANTITUSSIVES. |
