Development of a New Type of Allosteric Modulator of Muscarinic Receptors: Hybrids of the Antagonist AF-DX 384 and the Hexamethonio Derivative W84
摘要:
Various fragments of the hexamethonio-type allosteric agent W84 were linked to the secondary amino group of the muscarinic M-2 acetylcholine receptor-preferring antagonist AF-DX 384 to increase the area of attachment with the allosteric site. Addition of only the phthalimido moiety of W84 gave an allosteric enhancer of NMS binding. Thus, a new lead structure for the development of allosteric enhancers of NMS binding has been discovered.
The newly constructed reactor for hydrogenations in microwave fields allows to work out the syntheses up to 25 bar. This is shown for the synthesis of intermediates of active agents. In order to demonstrate the superiority of the microwave-assisted hydrogenation, the reactions are compared with classical hydrogenations. The following reactions were carried out: dearomatization, debenzylation, azide hydrogenation and the hydrogenation of strychnine. (C) 2005 Elsevier Ltd. All rights reserved.