Research article - Peer-reviewed, 2005
Nostocarboline: Isolation and synthesis of a new cholinesterase inhibitor from Nostoc 78-12A
Becher, Paul G; Beuchat, Julien; Gademann, Karl; Jüttner, FriedrichAbstract
A new quaternary beta-carboline alkaloid, nostocarboline (1), was isolated from the freshwater cyanobacterium Nostoc 78-12A, and its constitution was assigned by 2D-NMR methods. The structure was proven by its total synthesis starting from norharmane via chlorination at C-6 and methylation at N-2. Nostocarboline (1) was found to be a potent butyrylcholinesterase (BChE) inhibitor, with an IC50 of 13.2 mu M. The related 2-methylnorharmane, which is present in the human brain and might be relevant to Parkinson's disease (PD), was also determined to be a BChE inhibitor (11.2 mu M). These inhibitory concentrations are comparable to galanthamine, an approved drug for the treatment of Alzheimer's disease (AID). Nostocarboline (1) can thus be considered as a lead for the development of novel neurochemicals.Published in
Journal of Natural Products2005, volume: 68, number: 12, pages: 1793-1795
Publisher: AMER CHEMICAL SOC
Authors' information
Becher, Paul G (Becher, Paul)
University of Zürich
Beuchat, Julien
University of Zürich
Gademann, Karl
Swiss Federal Institute of Technology (ETH Zürich)
Jüttner, Friedrich
University of Zürich
UKÄ Subject classification
Microbiology
Publication Identifiers
DOI: https://doi.org/10.1021/np050312l
URI (permanent link to this page)
https://res.slu.se/id/publ/42843