Cyclic acyl guanidines bearing carbamate moieties allow potent and dirigible cholinesterase inhibition of either acetyl- or butyrylcholinesterase
作者:Fouad H. Darras、Beata Kling、Edgar Sawatzky、Jörg Heilmann、Michael Decker
DOI:10.1016/j.bmc.2014.06.010
日期:2014.9
A series of cyclic acyl guanidine with carbamatemoieties have been synthesized and evaluated in vitro for their AChE and BChE inhibitory activities. Structure−activity relationships identified compound 23 as a nanomolar and selective BChE inhibitor, while compound 32 exhibited nanomolar and selective AChE inhibition, selectivity depending on both the structure of the carbamate substituent as well
Identification of a neuroprotective and selective butyrylcholinesterase inhibitor derived from the natural alkaloid evodiamine
作者:Guozheng Huang、Beata Kling、Fouad H. Darras、Jörg Heilmann、Michael Decker
DOI:10.1016/j.ejmech.2014.05.002
日期:2014.6
Two sets of carbamates based on the natural alkaloid evodiamine were designed, synthesized and evaluated as potential butyrylcholinesterase inhibitors. Although a set of carbamates of 3-hydroxyevodiamine (10a-f) is inactive both at AChE and BChE, carbamates of 5-deoxo-3-hydroxyevodiamine (11a-f) exhibit much better potency with selectivity toward BChE. The heptyl carbamate of 5-deoxo-3-hydroxyevodiamine (11c) shows the best potency with an IC50 value of 77 nM and very good selectivity over AChE. ORAC and cell-based assays indicate 11c owns pronounced antioxidant properties with 1.75 Trolox equivalents and strong neuroprotection even from 1 mu M onwards. These combined activities might enable compound 11c to be a potential candidate for treatment of Alzheimer's disease. (C) 2014 Elsevier Masson SAS. All rights reserved.
Approach to the Synthesis of (+)-Ifforestine. Model Studies Directed at the Tetracyclic Framework
作者:Gregory H. P. Roos、Kim A. Dastlik
DOI:10.3987/com-03-9810
日期:——
A simple heterocyclic fusion reaction and its application for expeditious syntheses of rutaecarpine and its analogs