摘要:
                                A series of novel long-chain arylpiperazines bearing a coumarin fragment was synthesized and the compounds were evaluated for their affinity at alpha(1), D-2 and 5-HT2A receptors. Most of the new compounds showed high affinity for the three types of receptors alpha(1A), D-2 and 5-HT2A which depends, fundamentally, on the substitution of the N-4 of the piperazine ring. From the series emerged compound 6, which had an haloperidol-like profile at D-2 and 5HT(2A) receptors (pK(i) values of 7.93 and 6.76 respectively). The higher alpha(1A) receptor affinity (pA(2) = 9.07) of this compound could contribute to a more atypical antipsychotic profile than the haloperidol. (C) 2002 Elsevier Science Ltd. All rights reserved.