... Severe side effects are frequently experienced during antipsychotic drug treatment. In- 0022-2623/92/1835-1092$03.00/0 @ 1992 American Chemical Society Page 2. 0-2 and 5-HT2 Antagonists Journal of Medicinal Chemistry, 1992, Vol. 35, No. 6 1093 n n 6 ' F 2 F ...