Synthesis of GABA<sub>A</sub> Receptor Agonists and Evaluation of their α-Subunit Selectivity and Orientation in the GABA Binding Site
作者:Michaela Jansen、Holger Rabe、Axelle Strehle、Sandra Dieler、Fabian Debus、Gerd Dannhardt、Myles H. Akabas、Hartmut Lüddens
DOI:10.1021/jm701562x
日期:2008.8.1
heterologously expressed GABA A alpha ibeta 3gamma 2 receptors (i = 1-6). The effects of 5-aminomethyl-3 H-[1,3,4]oxadiazol-2-one 5d were comparable to GABA for all alpha subunit isoforms. 5-piperidin-4-yl-3 H-[1,3,4]oxadiazol-2-one 5a and 5-piperidin-4-yl-3 H-[1,3,4]oxadiazol-2-thione 6a were weak agonists at alpha 2-, alpha 3-, and alpha 5-containing receptors. When coapplied with GABA, they were antagonistic
A group of N-benzylpiperidine-3/4-carbohydrazide-hydrazones were designed, synthesized and evaluated for acetylcholinesterase (AChE), butyrylcholinesterase (BuChE) activities, A beta(42) self-aggregation inhibitory potentials, and antioxidant capacities, in vitro. All of the compounds displayed eeAChE and huAChE inhibitory activity in a range of IC50 = 5.68-11.35 mu M and IC50 = 8.80-74.40 mu M, respectively and most of the compounds exhibited good to moderate inhibitory activity on BuChE enzyme. Kinetic analysis and molecular modeling studies were also performed for the most potent compounds (1g and 1j). Not only the molecular modeling studies but also the kinetic analysis suggested that these compounds might be able to interact with the catalytic active site (CAS) and the peripheral anionic site (PAS) of the enzymes. In the light of the results, compound 1g and compound 1j may be suggested as lead compounds for multifunctional therapy of AD.
Aboul-Enein; El-Azzouny; Abdallah, Scientia Pharmaceutica, 1995, vol. 63, # 3, p. 175 - 190