| 摘要 |
This invention provides new compounds of formula I, wherein R1 is hydrogen, or alkyl, alkoxy or alkylthio of 1 to 4 carbon atoms, or trifluoromethyl, and R2 is hydrogen, or alkyl, hydroxyalkyl or acetoxyalkyl, the alkyl moiety having at most 4 carbon atoms, or alkoxyalkyl having at most 6 carbon atoms, USEFUL AS ANTIPSYCHOLICS AND SOPORIFICS.
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