Hybrid Dopamine Uptake Blocker–Serotonin Releaser Ligands: A New Twist on Transporter-Focused Therapeutics
摘要:
As part of our program to study neurotransmitter releasers, we report herein a class of hybrid dopamine reuptake inhibitors that display serotonin releasing activity. Hybrid compounds are interesting since they increase the design. potential of transporter related compounds and hence represent a novel and unexplored strategy for therapeutic drug discovery. A series of N-alkylpropiophenones was synthesized and assessed for uptake inhibition and release activity using rat brain synaptosomes. Substitution on the aromatic ring yielded compounds that maintained hybrid activity, with the two disubstituted analogues (PAL-787 and PAL-820) having the most potent hybrid activity.
Structure–activity studies leading to (−)1-(Benzofuran-2-yl)-2-propylaminopentane, ((−)BPAP), a highly potent, selective enhancer of the impulse propagation mediated release of Catecholamines and Serotonin in the brain
作者:F Yoneda
DOI:10.1016/s0968-0896(01)00002-5
日期:2001.5
The catecholaminergic and serotoninergic neurons in the brain change their performance according to the physiological need via a catecholaminergic/serotoninergic activity enhancer (CAE/SAE) mechanism. Phenylethylamine (PEA), tyramine and tryptamine are the presently known endogenous CAE/SAE substances which enhance the impulse propagation mediated release of catecholamines and serotonin in the brain. A PEA derivative, (-)deprenyl (selegiline), known as a selective inhibitor of MAO-B, is for the time being the only CAE/SAE substance in clinical use. Aiming to develop a selective CAE/SAE substance much more potent than (-)deprenyl, a series of new 1-aryl-2-alkylaminoalkanes, structurally unrelated to PEA and the amphetamines, was designed and prepared. Among them, (-)1-(benzofuran-2-yl)-2-propylaminopentane ((-)BPAP) was selected as a promising candidate substance for further studies. (-)BPAP significantly enhanced in rats the impulse propagation mediated release of catecholamines and serotonin in the brain 30 min after acute injection of 0.36 nmol/kg sc. In the shuttle box, (-)BPAP was in rats about 130 times more potent than (-)deprenyl in antagonizing tetrabenazine induced inhibition of performance. (-)BPAP protected cultured hippocampal neurons from the neurotoxic effect of P-amyloid in 10(-14)-10(-15) concentration. (C) 2001 Elsevier Science Ltd. All rights reserved.
NITRO ALKENE DERIVATIVES<sup>1</sup>
作者:H. B. HASS、A. G. SUSIE、R. L. HEIDER
DOI:10.1021/jo01147a002
日期:1950.1
Process for the selective hydrogenation of arylnitroolefins and products thereof