| 摘要 |
The present invention is directed to a new class of serotonin 5HT2 antagonists of formula (I) and their use in the treatment of a variety of diseases, in which R is represented by hydrogen, halog- en, C1-4 alkyl, C1-4 alkoxy, -CF3, -OH, or -COF3; and A is repre- sented by one of the following imide derivatives in which R1 and R2 are each independently represented by (Ia), (Ib), (Ic), (Id), (Ie), (If), (Ig), (Ih), hydrogen, halogen, C1-4 alkyl, C1-4 alkoxy, -CF3, -OH, or -OCF3; and the pharmaceutically acceptable salts there- of.
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