Novel piperidine .sigma. receptor ligands as potential antipsychotic drugs
摘要:
Sigma receptor ligands represent a new class of potential antipsychotic drugs. This paper presents the structure-activity relationships leading to novel disubstituted piperidine sigma ligands, which have little or no affinity for dopamine D2 receptors. Selectivity for sigma sites over dopamine D2 or serotonin 5-HT2 receptors appears to be governed by the chemical nature of the piperidine nitrogen substituent, its distance from the basic nitrogen, and its orientation relative to the other piperidine substituent. Several of these compounds have good oral potency in some animal models used to evaluate potential antipsychotic drugs. The N-cyclopropylmethyl ketones and ethers (e.g. 6i (DuP 734), 6q, 18a, and 18n) have the best in vivo potency. Compounds 6i (DuP 734) and 6q did not cause catalepsy in the rat, even at very high doses. On the basis of the pharmacology profiles of these sigma ligands, we propose these compounds may be effective antipsychotic drugs, which do not induce extrapyramidal side effects or tardive dyskinesia.
3-thienyl and 3-furanyl pyrrolidine modulators of chemokine receptor activity
申请人:Merck & Co., Inc.
公开号:US06303593B1
公开(公告)日:2001-10-16
The present invention is directed to pyrrolidine compounds of the formula I:
(wherein R1, R2, R3, R4c, R4d, and R4f are defined herein) which are useful as modulators of chemokine receptor activity. In particular, these compounds are useful as modulators of the chemokine receptors CCR-3 and/or CCR-5.
Piperidin ether derivatives as psychotropic drugs or plant fungicides
申请人:THE DU PONT MERCK PHARMACEUTICAL COMPANY
公开号:EP0449187A2
公开(公告)日:1991-10-02
There are provided piperidine ether derivatives (I) pharmaceutical and agricultural compositions containing them useful for treating physiological or drug induced psychosis or dyskinesia in a mammal or fungal disease in plants. Also provided are methods for preparing these compounds.