Design, synthesis and evaluation of molecularly targeted hypoxia-activated prodrugs

Regions of insufficient oxygen supply-hypoxia-occur in diverse contexts across biology in both healthy and diseased organisms. The difference in the chemical environment between a hypoxic biological system and one with normal oxygen levels provides an opportunity for targeting compound delivery to h...

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Main Authors: O'Connor, L, Cazares-Körner, C, Saha, J, Evans, C, Stratford, MR, Hammond, E, Conway, S
Format: Journal article
Language:English
Published: Nature Publishing Group 2016
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author O'Connor, L
Cazares-Körner, C
Saha, J
Evans, C
Stratford, MR
Hammond, E
Conway, S
author_facet O'Connor, L
Cazares-Körner, C
Saha, J
Evans, C
Stratford, MR
Hammond, E
Conway, S
author_sort O'Connor, L
collection OXFORD
description Regions of insufficient oxygen supply-hypoxia-occur in diverse contexts across biology in both healthy and diseased organisms. The difference in the chemical environment between a hypoxic biological system and one with normal oxygen levels provides an opportunity for targeting compound delivery to hypoxic regions by using bioreductive prodrugs. Here we detail a protocol for the efficient synthesis of (1-methyl-2-nitro-1H-imidazol-5-yl)methanol, which is a key intermediate that can be converted into a range of 1-methyl-2-nitro-1H-imidazole-based precursors of bioreductive prodrugs. We outline methods for attaching the bioreductive group to a range of functionalities, and we discuss the strategy for positioning of the group on the biologically active parent compound. We have used two parent checkpoint kinase 1 (Chk1) inhibitors to exemplify the protocol. The PROCEDURE also describes a suite of reduction assays, of increasing biological relevance, to validate the bioreductive prodrug. These assays are applied to an exemplar compound, CH-01, which is a bioreductive Chk1 inhibitor. This protocol has broad applications to the development of hypoxia-targeted compounds.
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spelling oxford-uuid:7305f79b-59fc-4dbe-8fdc-5de41b62a1522022-03-26T19:53:51ZDesign, synthesis and evaluation of molecularly targeted hypoxia-activated prodrugsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7305f79b-59fc-4dbe-8fdc-5de41b62a152EnglishSymplectic Elements at OxfordNature Publishing Group2016O'Connor, LCazares-Körner, CSaha, JEvans, CStratford, MRHammond, EConway, SRegions of insufficient oxygen supply-hypoxia-occur in diverse contexts across biology in both healthy and diseased organisms. The difference in the chemical environment between a hypoxic biological system and one with normal oxygen levels provides an opportunity for targeting compound delivery to hypoxic regions by using bioreductive prodrugs. Here we detail a protocol for the efficient synthesis of (1-methyl-2-nitro-1H-imidazol-5-yl)methanol, which is a key intermediate that can be converted into a range of 1-methyl-2-nitro-1H-imidazole-based precursors of bioreductive prodrugs. We outline methods for attaching the bioreductive group to a range of functionalities, and we discuss the strategy for positioning of the group on the biologically active parent compound. We have used two parent checkpoint kinase 1 (Chk1) inhibitors to exemplify the protocol. The PROCEDURE also describes a suite of reduction assays, of increasing biological relevance, to validate the bioreductive prodrug. These assays are applied to an exemplar compound, CH-01, which is a bioreductive Chk1 inhibitor. This protocol has broad applications to the development of hypoxia-targeted compounds.
spellingShingle O'Connor, L
Cazares-Körner, C
Saha, J
Evans, C
Stratford, MR
Hammond, E
Conway, S
Design, synthesis and evaluation of molecularly targeted hypoxia-activated prodrugs
title Design, synthesis and evaluation of molecularly targeted hypoxia-activated prodrugs
title_full Design, synthesis and evaluation of molecularly targeted hypoxia-activated prodrugs
title_fullStr Design, synthesis and evaluation of molecularly targeted hypoxia-activated prodrugs
title_full_unstemmed Design, synthesis and evaluation of molecularly targeted hypoxia-activated prodrugs
title_short Design, synthesis and evaluation of molecularly targeted hypoxia-activated prodrugs
title_sort design synthesis and evaluation of molecularly targeted hypoxia activated prodrugs
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