112799-19-6Relevant articles and documents
The low affinity PCP sites in the rat cerebellum not only bind TCP-like but also BTCP-like structures
Espaze, Florence,Hamon, Jacques,Hirbec, Helene,Vignon, Jacques,Kamenka, Jean-Marc
, p. 323 - 331 (2000)
Congeners of the potent dopamine (DA) re-uptake inhibitor l-[1-(2- benzo[b]thiophenyl)cyclohexyl]piperidine (BTCP) are unexpectedly able to bind in the rat cerebellum, although this structure is devoid of dopaminergic nerve endings. In line with previous studies the hypothesis that they bind to low affinity PCP sites labelled with [3H]TCP in the rat cerebellum, even though they do not bind to the high affinity PCP sites in the forebrain, was considered. Analogues of l-[1-(2-thiophenyl)cyclohexyl]piperidine (TCP) and BTCP with a modified aromatic moiety and with O or S atoms substituted in the cyclohexyl ring were prepared and tested in competition experiments both in rat forebrain and cerebellum membranes labelled with [3H]TCP, and in rat striatum membranes labelled with [3H]BTCP. Results indicated that BTCP and congeners could bind to low affinity PCP sites labelled with [3H]TCP in the rat cerebellum with a decrease of the selectivity for the DA transporter. On the contrary, some TCP analogues displayed a very high selectivity for these low affinity sites: they might be important pharmacological tools to elucidate the nature and function at yet unknown of these sites. (C) 2000 Editions scientifiques et medicales Elsevier SAS.
Effect of lowered lipophilicity on the affinity of PCP analogues for the PCP receptor and the dopamine transporter
Hamon,Vignon,Kamenka
, p. 489 - 495 (2007/10/03)
Oxygen and sulphur atoms were introduced in the cyclohexyl and piperidinyl moieties of the basic structures 1-(1-phenyl-cyclohexyl)piperidine (PCP), 1- [1-(2-thienyl)cyclohexyl]piperidine (TCP), and 1-[1-(2- benzo[b]thiophenyl)cyclohexyl]piperidine (BTCP) to lower their global lipophilicity. The compounds obtained were tested comparatively for their affinity for the PCP receptor labelled with [3H]TCP and for the dopamine (DA) transporter labelled with [3H]BTCP. Lowering the global lipophilicity in PCP and TCP series is detrimental to the affinity and selectivity for the PCP receptor. In the BTCP series lowering of the global lipophilicity is less deleterious and may, on the contrary, be a useful way of increasing selectivity for the DA transporter in some instances.