Justin J. Richards

Works (15)

Updated: July 5th, 2023 21:22

2012 journal article

Evaluation of the toxicity of 2-aminoimidazole antibiofilm agents using both cellular and model organism systems

DRUG AND CHEMICAL TOXICOLOGY, 35(3), 310–315.

By: S. Stowe n, A. Tucker*, R. Thompson*, A. Piper*, J. Richards*, S. Rogers*, L. Mathies n, C. Melander*, J. Cavanagh*

author keywords: 2-aminoimidazole; adjuvant; biofilm; Caenorhabditis elegans; toxicity; Toxicity of 2-aminoimidazole; antibiofilm agents
MeSH headings : Adjuvants, Pharmaceutic / toxicity; Animals; Anti-Bacterial Agents / pharmacology; Anti-Bacterial Agents / toxicity; Biofilms / drug effects; Caenorhabditis elegans; Cell Line; Dose-Response Relationship, Drug; Environmental Exposure; Fertility / drug effects; Humans; Imidazoles / pharmacology; Imidazoles / toxicity; Keratinocytes / metabolism; Tetrazolium Salts; Thiazoles; Toxicity Tests
TL;DR: The most effective antibiofilm compound had significant effects when used in conjunction with several standard antibiotics against resistant bacteria and was found to maintain the same low level of toxicity as when acting alone, bolstering its candidacy for further testing as an adjuvant. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2012 journal article

Small molecule control of bacterial biofilms

Organic & Biomolecular Chemistry, 10(37), 7457–7474.

By: R. Worthington, J. Richards & C. Melander

Source: NC State University Libraries
Added: August 6, 2018

2011 review

Anti-biofilm compounds derived from marine sponges

[Review of ]. Marine Drugs, 9(10), 2010–2035.

By: S. Stowe, J. Richards, A. Tucker, R. Thompson, C. Melander & J. Cavanagh

Source: NC State University Libraries
Added: August 6, 2018

2010 journal article

Identification of aryl 2-aminoimidazoles as biofilm inhibitors in Gram-negative bacteria

BIOORGANIC & MEDICINAL CHEMISTRY LETTERS, 20(12), 3797–3800.

By: C. Bunders n, J. Richards n & C. Melander n

author keywords: 2-Aminoimidazoles; Bacterial biofilms
MeSH headings : Acinetobacter baumannii / drug effects; Anti-Bacterial Agents / chemistry; Biofilms / drug effects; Escherichia coli / drug effects; Gram-Negative Bacteria / drug effects; Imidazoles / chemistry; Imidazoles / pharmacology; Plankton / drug effects; Pseudomonas aeruginosa / drug effects; Small Molecule Libraries / chemical synthesis
TL;DR: The synthesis and biofilm inhibitory activity of a 30-member aryl amide 2-aminoimidazole library against the three biofilm forming Gram-negative bacteria Escherichia coli, Psuedomonas aeruginosa, and Acinetobacter baumannii is presented. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2009 journal article

Amide Isosteres of Oroidin: Assessment of Antibiofilm Activity and C. elegans Toxicity

JOURNAL OF MEDICINAL CHEMISTRY, 52(15), 4582–4585.

By: J. Richards n, S. Reyes n, S. Stowe n, A. Tucker n, T. Ballard  n, L. Mathies n, J. Cavanagh n, C. Melander n

MeSH headings : Amides / chemical synthesis; Amides / pharmacology; Amides / toxicity; Animals; Anti-Bacterial Agents / chemical synthesis; Anti-Bacterial Agents / pharmacology; Biofilms / drug effects; Caenorhabditis elegans / drug effects; Pseudomonas aeruginosa / drug effects; Pseudomonas aeruginosa / physiology; Pyrroles / chemical synthesis; Pyrroles / pharmacology; Pyrroles / toxicity; Structure-Activity Relationship; Sulfonamides / chemical synthesis; Sulfonamides / pharmacology; Thiourea / chemical synthesis; Thiourea / pharmacology; Urea / chemical synthesis; Urea / pharmacology
TL;DR: The synthesis and antibiofilm activities of sulfonamide, urea, and thiourea oroidin analogues are described and the most active derivative was able to selectively inhibit P. aeruginosa biofilm development and is also shown to be nontoxic upward of 1 mM to the development of C. elegans. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2009 journal article

Antibiofilm Activity of a Diverse Oroidin Library Generated through Reductive Acylation

JOURNAL OF ORGANIC CHEMISTRY, 74(4), 1755–1758.

By: T. Ballard  n, J. Richards n, A. Aquino  n, C. Reed n & C. Melander n

MeSH headings : Acylation; Biofilms / drug effects; Oxidation-Reduction; Proteobacteria / drug effects; Pyrroles / chemical synthesis; Pyrroles / chemistry; Pyrroles / pharmacology; Small Molecule Libraries / chemical synthesis; Small Molecule Libraries / chemistry; Small Molecule Libraries / pharmacology
TL;DR: This methodology represents a significant improvement over the generality of known methods to acylate substrates containing 2-aminoimidazoles and has the potential to have broad application to the synthesis of more advanced oroidin family members and their corresponding analogues. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2009 review

Controlling Bacterial Biofilms

[Review of ]. CHEMBIOCHEM, 10(14), 2287–2294.

By: J. Richards n & C. Melander n

author keywords: bacteriophages; biofilms; drug discovery; natural products; quorum sensing
MeSH headings : Anti-Bacterial Agents / pharmacology; Bacteria / growth & development; Bacterial Physiological Phenomena; Bacteriophages / growth & development; Biofilms / growth & development; Biological Products / pharmacology; Drug Design; Quorum Sensing / physiology; Small Molecule Libraries
TL;DR: The ubiquitous nature of bacteria in the environment, and the role they play in infectious disease has been one of the most extensively researched areas in biomedical science, and upwards of 75 % of microbial infections that occur in the human body are underpinned by the formation and persistence of biofilms. (via Semantic Scholar)
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2009 journal article

Evaluation of dihydrooroidin as an antifouling additive in marine paint

INTERNATIONAL BIODETERIORATION & BIODEGRADATION, 63(4), 529–532.

By: C. Melander n, P. Moeller*, T. Ballard  n, J. Richards n, R. Huigens n & J. Cavanagh n

author keywords: Antifouling; Biofilms; Natural products
TL;DR: Dihydrooroidin (DHO) is presented as an effective paint-based, non-cytotoxic, antifouling agent against marine biofouling processes in a marine mesocosm. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2008 journal article

Effects of N-pyrrole substitution on the anti-biofilm activities of oroidin derivatives against Acinetobacter baumannii

BIOORGANIC & MEDICINAL CHEMISTRY LETTERS, 18(15), 4325–4327.

By: J. Richards n, C. Reed n & C. Melander n

author keywords: biofilm; inhibition; dispersion; marine natural products; oroidin
MeSH headings : Acinetobacter baumannii / drug effects; Acinetobacter baumannii / growth & development; Anti-Bacterial Agents / chemical synthesis; Anti-Bacterial Agents / chemistry; Anti-Bacterial Agents / pharmacology; Biofilms / drug effects; Biofilms / growth & development; Humans; Imidazoles / chemistry; Microbial Sensitivity Tests; Molecular Structure; Pyrroles / chemical synthesis; Pyrroles / chemistry; Pyrroles / pharmacology; Small Molecule Libraries; Stereoisomerism; Structure-Activity Relationship
TL;DR: This work presents the anti-biofilm activity of a small library of second generation oroidin analogues against the bacterium Acinetobacter baumannii. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2008 journal article

Inhibition and dispersion of Pseudomonas aeruginosa biofilms with reverse amide 2-aminoimidazole oroidin analogues

ORGANIC & BIOMOLECULAR CHEMISTRY, 6(8), 1356–1363.

By: J. Richards n, T. Ballard  n & C. Melander n

MeSH headings : Anti-Bacterial Agents / chemical synthesis; Anti-Bacterial Agents / chemistry; Anti-Bacterial Agents / pharmacology; Biofilms / drug effects; Biofilms / growth & development; Humans; Imidazoles / chemistry; Microbial Sensitivity Tests; Molecular Structure; Pseudomonas aeruginosa / drug effects; Pseudomonas aeruginosa / growth & development; Pyrroles / chemical synthesis; Pyrroles / chemistry; Pyrroles / pharmacology; Small Molecule Libraries; Stereoisomerism; Structure-Activity Relationship
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Source: Web Of Science
Added: August 6, 2018

2008 journal article

Inhibition and dispersion of proteobacterial biofilms

Chemical Communications (Cambridge, England), (14), 1698–1700.

By: J. Richards, R. Huigens, T. Ballard, A. Basso, J. Cavanagh & C. Melander

Source: NC State University Libraries
Added: August 6, 2018

2008 journal article

Synthesis and Antibiofilm Activity of a Second-Generation Reverse-Amide Oroidin Library: A Structure-Activity Relationship Study

CHEMISTRY-A EUROPEAN JOURNAL, 14(34), 10745–10761.

By: T. Ballard  n, J. Richards n, A. Wolfe n & C. Melander n

author keywords: amino acids; biological activity; drug design; medicinal chemistry; structure-activity relationships
MeSH headings : Acinetobacter baumannii / drug effects; Acinetobacter baumannii / growth & development; Anti-Bacterial Agents / chemical synthesis; Anti-Bacterial Agents / chemistry; Anti-Bacterial Agents / pharmacology; Biofilms / drug effects; Biofilms / growth & development; Drug Design; Imidazoles / chemistry; Microbial Sensitivity Tests; Molecular Structure; Pseudomonas aeruginosa / drug effects; Pseudomonas aeruginosa / growth & development; Pyrroles / chemical synthesis; Pyrroles / chemistry; Pyrroles / pharmacology; Small Molecule Libraries; Stereoisomerism; Structure-Activity Relationship
TL;DR: A second-generation library of 2-aminoimidazole-based derivatives incorporating a "reversed amide" (RA) motif in comparison to the marine natural product oroidin were synthesized and subsequently assayed for antibiofilm activity against the medically relevant Gram-negative proteobacteria P. aeruginosa and A. baumannii. (via Semantic Scholar)
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2008 journal article

Synthesis and screening of an oroidin library against Pseudomonas aeruginosa biofilms

CHEMBIOCHEM, 9(8), 1267–1279.

By: J. Richards n, T. Ballard  n, R. Huigens n & C. Melander n

author keywords: biological activity; drug design; medicinal chemistry; natural products; structure-activity relationships
MeSH headings : Biofilms; Cross-Linking Reagents / chemistry; Databases, Factual; Drug Design; Drug Evaluation, Preclinical; Molecular Structure; Pseudomonas aeruginosa / drug effects; Pyrroles / chemical synthesis; Pyrroles / chemistry; Pyrroles / pharmacology; Structure-Activity Relationship
TL;DR: The synthesis and determined biological activity of this unique class of compounds as inhibitors of biofilm formation that have no direct antibiotic effect are disclosed. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2008 journal article

Synthesis of a 2-aminoimidazole library for antibiofilm screening utilizing the Sonogashira reaction

JOURNAL OF ORGANIC CHEMISTRY, 73(13), 5191–5193.

By: J. Richards n & C. Melander n

MeSH headings : Anti-Bacterial Agents / chemistry; Anti-Bacterial Agents / pharmacology; Bacteria / drug effects; Biofilms / drug effects; Combinatorial Chemistry Techniques; Imidazoles / chemical synthesis; Molecular Structure
TL;DR: The divergent synthesis of a 21-member library composed of 2-aminoimidazole compounds for evaluation as novel antibiofilm molecules is presented and the products provide adequate handles for further manipulation into more advanced analogues. (via Semantic Scholar)
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Added: August 6, 2018

2007 journal article

Inhibition of Pseudomonas aeruginosa biofilm formation with bromoageliferin analogues

Journal of the American Chemical Society, 129(22), 6966-.

By: R. Huigens, J. Richards, G. Parise, T. Ballard, W. Zeng, R. Deora, C. Melander

Source: NC State University Libraries
Added: August 6, 2018

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