omega-Conotoxin GVIA mimetics based on an anthranilamide core: Effect of variation in ammonium side chain lengths and incorporation of fluorine
- Author(s)
- Andersson, A; Baell, JB; Duggan, PJ; Graham, JE; Lewis, RJ; Lumsden, NG; Tranberg, CE; Tuck, KL; Yang, AJ;
- Details
- Publication Year 2009-09-15,Volume 17,Issue #18,Page 6659-6670
- Journal Title
- BIOORGANIC & MEDICINAL CHEMISTRY
- Publication Type
- Journal Article
- Abstract
- A number of omega-conotoxin GVIA mimetics based on an anthranilamide core were prepared and tested for their affinity for rat brain Ca(v)2.2 channels. Features such as the presence of hydroxyl and fluoro substituents on the tyrosine side chain mimic, the length of the chains on the lysine/arginine side chain mimics and the use of diguanidino and diamino substituents rather than mono-guanidine/mono-amine substitution were examined. The diguanidinylated compounds proved to be the most active and deletion of the hydroxyl substituent had a limited influence on activity. The SAR associated with variation in the lysine/arginine side chain mimics was not strong. The introduction of a fluoro substituent into the tyrosine mimic produced the most active compound prepared in this study (2g), with an EC(50) at rat brain Ca(v)2.2 channels of 6 mu M. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- CALCIUM-CHANNEL BLOCKERS; SEVERE CHRONIC PAIN; NONPEPTIDE MIMETICS; INTRATHECAL ZICONOTIDE; BIOLOGICAL EVALUATION; NEUROPATHIC PAIN; REFRACTORY PAIN; DERIVATIVES; DESIGN; HYDROCHLORIDE
- Publisher's Version
- https://doi.org/10.1016/j.bmc.2009.07.063
- Terms of Use/Rights Notice
- Refer to copyright notice on published article.
Creation Date: 2009-09-15 12:00:00