Triazolophostins: a library of novel and potent agonists of IP3receptors

Vibhute, Amol M. ; Konieczny, Vera ; Taylor, Colin W. ; Sureshan, Kana M. (2015) Triazolophostins: a library of novel and potent agonists of IP3receptors Organic and Biomolecular Chemistry, 13 (24). pp. 6698-6710. ISSN 1477-0520

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Official URL: http://doi.org/10.1039/c5ob00440c

Related URL: http://dx.doi.org/10.1039/c5ob00440c

Abstract

IP3 receptors are channels that mediate the release of Ca(2+) from the intracellular stores of cells stimulated by hormones or neurotransmitters. Adenophostin A (AdA) is the most potent agonist of IP3 receptors, with the β-anomeric adenine contributing to the increased potency. The potency of AdA and its stability towards the enzymes that degrade IP3 have aroused interest in AdA analogs for biological studies. The complex structure of AdA poses problems that have necessitated optimization of synthetic conditions for each analog. Such lengthy one-at-a-time syntheses limit access to AdA analogs. We have addressed this problem by synthesizing a library of triazole-based AdA analogs, triazolophostins, by employing click chemistry. An advanced intermediate having all the necessary phosphates and a β-azide at the anomeric position was reacted with various alkynes under Cu(i) catalysis to yield triazoles, which upon deprotection gave triazolophostins. All eleven triazolophostins synthesized are more potent than IP3 and some are equipotent with AdA in functional analyses of IP3 receptors. We show that a triazole ring can replace adenine without compromising the potency of AdA and provide facile routes to novel AdA analogs.

Item Type:Article
Source:Copyright of this article belongs to The Royal Society of Chemistry.
ID Code:119896
Deposited On:18 Jun 2021 06:44
Last Modified:18 Jun 2021 06:44

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