Skip to main content

Trinity College Dublin, The University of Dublin

Trinity Menu Trinity Search



Dr. John Walsh
Associate Professor, Pharmacy

Biography

John J. Walsh, BA (Mod.), PhD (TCD), is an Associate Professor of Pharmacognosy and Associate Director of the NatPro Centre for Natural Product Research in Trinity College Dublin. A particular theme of his research is the evaluation of plant-based metabolites for potential use in the treatment of inflammatory conditions, microbial and insect-related infections, allergies and cancer. In parallel, he also runs drug design based projects with particular emphasis on the design, synthesis and evaluation of hybrid-based compounds and designed multiple ligands as potential therapies for both malaria and cancer. As Senior Author he has published widely across many of the leading journals in his field. including Journal of Natural Products, European Journal of Medicinal Chemistry, British Journal of Pharmacology, Bioorganic and Medicinal Chemistry, Angiogenesis, Current Pharmaceutical Design, Pharmaceutical Research, Current Medicinal Chemistry, Pharmaceutics and Chemical Communications. Funding for his research has been secured from Enterprise Ireland, Cancer Research Ireland, Research Ireland, Higher Education Authority and Department of Justice, Ireland. As principal supervisor he has supervised 20 PhD and 4 MSc students to completion. He is a very strong advocate of research-led teaching and has published eight papers in the Journal of Chemical Education on miniaturised and sustainable methods for the isolation of medicinally important natural products. He is a former Director of Undergraduate Teaching and Learning in the School of Pharmacy and Pharmaceutical Sciences and is currently a member of Committee 13B (Phytochemistry) of the European Pharmacopoeia.

Publications and Further Research Outputs

Peer-Reviewed Publications

Kavita Gadar; Maria Pigott; Cillian Jacques Gately; Ismael Obaidi; Shipra Nagar; John J. Walsh; Helen Sheridan; Ronan R McCarthy, Bogland plant Tormentil inhibits multidrug-resistant pathogen growth and potentiates antibiotics by disrupting iron homeostasis, Microbiology (Reading), 172, (3), 2026, p1 - 14 Journal Article, 2026 DOI

Mark J. Lyons, Brendan Twamley, John J. Walsh, CCDC 2554447: Experimental Crystal Structure Determination, Cambridge Crystallographic Data Centre, 2026 Dataset, 2026 DOI

Whyms SE, Sheridan H, Walsh JJ, Design Considerations for Essential Oil Formulations: Emulsification, Encapsulation and Stabilisation Strategies, Pharmaceutics, 18, (8), 2026, p953 - 995 Journal Article, 2026 DOI

Khadijah Jabal, Phytochemical studies on Lusitanian heath species and their effects on angiogenesis and melanogenesis (PhD Thesis), Trinity College Dublin, 2026 Thesis, 2026 URL

Ronan R. McCarthy, Kavita Gadar, John Walsh, Wildflower once used to treat wounds and sore throats shows promise in fighting dangerous superbugs, The Conversation, 2026 Journal Article, 2026 DOI

Mark Lyons, Optimisation of analytical, biological, and synthetic methods relevant to the pre-clinical development of orellanine as a targeted therapeutic for renal cell carcinoma (PhD Thesis), Trinity College Dublin, 2026 Thesis, 2026 URL

Nagar, S., Pigott, M., Kukula-Koch, W., Sheridan, H., & Walsh, J., NMR Data of Lichenic Acids From Irish Cladonia Portentosa, nmrXiv, 2026 Dataset, 2026 URL

Erol, Ã-zlem and Nagar, Shipra and Selo, Mohammed Ali and Obaidi, Ismael and Walsh, John J. and Sheridan, Helen and Choi, Young Hae, Identification of anti-inflammatory and antimicrobial compounds from leaves and rhizome of Iris pseudacorus collected in Ireland bogland using chemical profiling techniques, Fitoterapia, 185, 2025 Journal Article, 2025 DOI

Minchao Guo, Muhammad Waleed Baig, Shane Carney, Ferdia O'Malley, Joshua Odidison, Amirul Helmi Idris, Stacey Li Hi Shing, John O'Brien, James W. Barlow, John Walsh, Studies on the Isolation and Structure Elucidation of Berberine, (")-ß-Hydrastine, and Jatrorrhizine from Goldenseal Root (Hydrastis canadensis L.) and Mahonia x media `Winter Sun" Stem Bark, Journal of Chemical Education, 102, (4), 2025, p1643 - 1650, p1643-1650 Journal Article, 2025 DOI

, A study on the antiproliferative activity of the triterpenoid constituents in Erica erigena, 69, 2025, pp103623-103623 Meeting Abstract, 2025 DOI

Jabal, Khadijah A. and Pigott, Maria and Sheridan, Helen and Walsh, John J., Mediterranean Basin Erica Species: Traditional Uses, Phytochemistry and Pharmacological Properties, Molecules, 30, (12), 2025 Journal Article, 2025 DOI

MJ Lyons, C Ehrhardt, JJ Walsh, Orellanine: From fungal origins to a future cancer treatment, J Nat Prod, 86, (6), 2023, p620-1631 Journal Article, 2023 URL DOI

Quanxiang Yan, Tao Zhang, Christine O'Connor, James W. Barlow, John Walsh, Gaia Scalabrino, Feng Xu, Helen Sheridan, The biological responses of vitamin K2: A comprehensive review, Food Science & Nutrition, 00, 2023, p1 - 23 Journal Article, 2023

Gary Stack, Stereoselective synthesis of novel tubulin inhibitors with diverse functionality for integration into molecular conjugates and designed multiple ligands (Ph.D. Thesis), Trinity College Dublin, 2023 Thesis, 2023 URL

(ed.), A study on the triterpenoid constituents in Erica Erigena, 89, (14), 2023, 1326 - 1326 p, 1326-1326 p Proceedings of a Conference, 2023 DOI

Herng Mak, John Walsh, Short Lecture Where nature's toxins meet biologics: digital teaching of antibody-drug conjugates", 89, (14), 2023, pp1300 - 1300, pp1300-1300 Oral Presentation, 2023 DOI

Anwar N, Khan A, Shah M​, Walsh JJ, Saleem S, Anwar Z, Aslam S, Irshad M., Hybridization of green synthesized silver nanoparticles with poly(ethylene glycol) methacrylate and their biomedical applications., PeerJ , (10), 2022, p1 - 28 Journal Article, 2022 DOI

Collyer, Samuel E., Gary D. Stack, and John J. Walsh, Selective Delivery of Clinically Approved Tubulin Binding Agents through Covalent Conjugation to an Active Targeting Moiety, CURRENT MEDICINAL CHEMISTRY, 29, (31), 2022, p5179 - 5211 Journal Article, 2022 DOI

Ryan TJ, Ryder SA, D'Arcy DM, Quigley JM, Ng NN, Ong WQ, Tey ZH, O'Dwyer M, Walsh JJ., Development of Professional Attributes through Integration of Science and Practice at First-Year Pharmacy Level, Pharmacy, 2021 Journal Article, 2021 URL DOI TARA - Full Text

Natasha Anwar, Abbas Khan, Mohib Shah, John Walsh, Zeeshan Anwar, Hybridization of Gold Nanoparticles with Poly(ethylene glycol) Methacrylate and Their Biomedical Applications, Russian Journal of Physical Chemistry A, 95, (13), 2021, p2619 - 2631, p2619-2631 Journal Article, 2021 DOI

Ijaz S, Shoaib Khan HM, Anwar Z, Talbot B, Walsh JJ, HPLC profiling of Mimosa pudica polyphenols and their non-invasive biophysical investigations for anti-dermatoheliotic and skin reinstating potential, Biomedicine & Pharmacotherapy, 109, 2019, p865 - 875 Journal Article, 2019 TARA - Full Text DOI

Ryan, T.J.; Grimes, T.; Henman, M.C.; Sheachnasaigh, E.N.; O'Dwyer, M.; Roche, C.; Ryder, S.A.; Sasse, A.; Walsh, J.J. & D'Arcy, D.M, Design and Implementation of an Integrated Competency-Focused Pharmacy Programme: A Case Report., Pharmacy, 7, (3), 2019 Journal Article, 2019 DOI URL

Zeeshan Anwar, Synthesis of Tubulin Inhibitors with Variable Molecular Hinges for the Attachment of Aminopeptidase N Targeting Moieties, Trinity College Dublin, 2019 Thesis, 2019 URL

Denise Ropero, Phytochemical studies on Choisya x dewitteana 'Aztec Pearl', 2018 Thesis, 2018

(ed.), Aromatic Substitution Reaction of Ergothioneine; a Novel Mechanism of Xenobiotic Deactivation, 31, (S1), 2017 Proceedings of a Conference, 2017 DOI

, Protective role of ergothioneine from tobacco smoke-induced oxidative stress in vitro and in vivo, 30, (S1), 2016 Published Abstract, 2016 DOI

Zhang T, Finn D.F, Barlow J.W, Walsh J.J, Mast cell stabilisers, European Journal of Pharmacology, 778, 2016, p158 - 168 Journal Article, 2016 URL DOI

(ed.), OCTN1"Mediated Ergothioneine Uptake Protects Lung Epithelial Cells From Tobacco Smoke"Induced Damage, 29, (S1), 2015 Proceedings of a Conference, 2015 DOI

Linker technologies and release mechanisms for antibody-drug conjugates in, editor(s)Professor Norbert Sewald , Optimizing antibody-drug conjugates for targeted delivery of therapeutics, Future press, 2015, pp40 - 55, [John J. Walsh and Gary D. Stack ] Book Chapter, 2015 DOI

G. Sturman(ed.), NOVEL MAST CELL-STABILISING ALCOHOLDERIVATIVES OF 3,4 DIHYDRONAPHTHALEN-1(2H)-ONE and 6,7,8,9-TETRAHYDRO-5H-BENZO[7]ANNULEN-5-ONE, Inflammation Research, Malaga, Spain, 64, (Suppl 1), May 6-9, 2015, 2015, 15 - 15 p Proceedings of a Conference, 2015

Brian Moran, The design, synthesis and biological evaluation of novel multiple targeting anti-cancer agents (PhD Thesis), Trinity College Dublin, 2015 Thesis, 2015

Egan M, Connors E.M, Anwar Z, Walsh J.J, Nature's Treatment for Irritable Bowel Syndrome: Studies on the Isolation of (-)-Menthol from Peppermint Oil and Its Conversion to (-)-Menthyl Acetate, Journal of Chemical Education, 92, (10), 2015, p1736 - 1740 Journal Article, 2015 URL DOI

Paul Matthew O'Byrne, Robert Williams, John J. Walsh, John Gilmer, Part Two: Evaluation of N-methylbupropion as a Potential Bupropion Prodrug, Pharmaceuticals, 7, (6), 2014, p676 - 694 Journal Article, 2014 TARA - Full Text DOI

Paul Matthew O'Byrne, Robert Williams, John J. Walsh, John Gilmer, Synthesis, screening and pharmacokinetic evaluation of potential prodrugs of bupropion, Pharmaceuticals, 7, (5), 2014, p595 - 620 Journal Article, 2014 DOI TARA - Full Text

Bopha Chrea, Juliette A. O'Connell, Orlando Silkstone-Carter, John O'Brien, and John J. Walsh, Nature's Antidepressant for Mild to Moderate Depression: Isolation and Spectral Characterization of Hyperforin from a Standardized Extract of St. John's Wort (Hypericum perforatum), Journal of Chemical Education, 91, (3), 2014, p440 - 442 Journal Article, 2014 URL DOI

Finn, D.F., Walsh, J.J., Twenty-first century mast cell stabilizers, British Journal of Pharmacology, 170, (1), 2013, p23-37 Journal Article, 2013 DOI TARA - Full Text

Prokopiou EM, Ryder SA, Walsh JJ, Tumour vasculature targeting agents in hybrid/conjugate drugs., Angiogenesis, 16, (3), 2013, p503 - 524 Journal Article, 2013 DOI URL URL URL TARA - Full Text

Emma L. Walsh, Siobhan Ashe, and John J. Walsh, Nature's Migraine Treatment: Isolation and Structure Elucidation of Parthenolide from Tanacetum parthenium, Journal of Chemical Education, 89, 2012, p134 - 137 Journal Article, 2012 URL DOI

Gary D. Stack and John J. Walsh, Optimising the Delivery of Tubulin Targeting Agents through Antibody Conjugation., Pharmaceutical Research, 29, (11), 2012, p2972 - 2984 Journal Article, 2012 URL

Anne-Marie Carroll, David J. Kavanagh, Fiona P. McGovern, Joe W. Reilly, and John J. Walsh, Nature's Chiral Catalyst and Anti-Malarial Agent: Isolation and Structure Elucidation of Cinchonine and Quinine from Cinchona calisaya, Journal of Chemical Education, 89, 2012, p1578 - 1581 Journal Article, 2012 URL

Maisarah Mohd Nazri, Farah D. Samat, Pierce V. Kavanagh, and John J. Walsh, Nature's Cholesterol-Lowering Drug: Isolation and Structure Elucidation of Lovastatin from Red Yeast Rice-Containing Dietary Supplements, Journal of Chemical Education, 89, 2012, p138 - 140 Journal Article, 2012 DOI URL

Carroll, A.-M., Kavanagh, D.J., McGovern, F.P., Reilly, J.W., Walsh, J.J., Natures chiral catalyst and anti-malarial agent: Isolation and structure elucidation of cinchonine and quinine from cinchona calisaya, Journal of Chemical Education, 89, (12), 2012, p1578-1581 Journal Article, 2012 DOI

James W. Barlow, Tao Zhang, Orla Woods, Adam J. Byrne, John Walsh, Novel Mast Cell-Stabilising Amine Derivatives of 3,4-Dihydronaphthalen-1(2H)-one and 6,7,8,9-Tetrahydro-5H-benzo[7]annulen-5-one, Medicinal Chemistry, 7, (3), 2011, p213 - 223, p213-223 Journal Article, 2011 DOI

James W. Barlow, Aengus P. McHugh, Orla Woods, John J. Walsh, Synthesis of novel mast cell-stabilising and anti-allergic 1,2,3,4-tetrahydro-1-naphthalenols and related compounds, European Journal of Medicinal Chemistry, 46, (5), 2011, p1545-1554 Journal Article, 2011 TARA - Full Text

Adam J. Byrne, James W. Barlow, John J. Walsh, Synthesis and pharmacological evaluation of the individual stereoisomers of 3- [methyl(1,2,3,4-tetrahydro-2-naphthalenyl)amino]-1-indanone, a potent mast cell stabilising agent, Bioorganic & Medicinal Chemistry Letters, 21, (4), 2011, p1191-1194 Journal Article, 2011 TARA - Full Text

Barlow JW, Walsh JJ., Synthesis and evaluation of dimeric 1,2,3,4-tetrahydro-naphthalenylamine and indan-1-ylamine derivatives with mast cell-stabilising and anti-allergic activity., European Journal of Medicinal Chemistry, 45, (1), 2010, p25 - 37 Journal Article, 2010 URL DOI

Breen EC and Walsh JJ, Tubulin-targeting agents in hybrid drugs., Current Medicinal Chemistry, 17, (7), 2010, p609 - 639 Journal Article, 2010 URL

O'Byrne PM, Williams R, Walsh JJ, Gilmer JF., The aqueous stability of bupropion, Journal of Pharmaceutical and Biomedical Analysis, 53, (3), 2010, p376 - 381 Journal Article, 2010 URL DOI

Ellen C. Breen, John Walsh, Tubulin-Targeting Agents in Hybrid Drugs, Current Medicinal Chemistry, 17, (7), 2010, p609 - 639, p609-639 Journal Article, 2010 DOI

Catherine M. Halpin, Ciara Reilly, and John J. Walsh, Nature's Anti-Alzheimer's Drug: Isolation and Structure Elucidation of Galantamine from Leucojum aestivum, Journal of Chemical Education, 87 , (11), 2010, p1242 - 1243 Journal Article, 2010 URL DOI

Walsh JJ and Bell A, Hybrid Drugs for Malaria, Current Pharmaceutical Design, 15(25), 2009, p2970-85 Journal Article, 2009 DOI URL

Sheridan H, Walsh JJ, Cogan C, Jordan M, McCabe T, Passante E, Frankish NH, Diastereoisomers of 2-Benzyl-2, 3-dihydro-2-(1H-inden-2-yl)-1H-inden-1-ol: Potent anti-inflammatory agents, Bioorganic & Medicinal Chemistry Letters, 19, 2009, p5927 - 5930 Journal Article, 2009 DOI

Sheridan H, Walsh JJ, Jordan M, Cogan C, Frankish N., A series of 1, 2-coupled indane dimers with mast cell stabilisation and smooth muscle relaxation properties., European Journal of Medicinal Chemistry, 44, (12), 2009, p5018 - 5022 Journal Article, 2009 URL

Sheridan, H. Walsh, J. J. Jordan, M. Cogan, C. Frankish, N, A series of 1, 2-coupled indane dimers with mast cell stabilisation and smooth muscle relaxation properties, Eur J Med Chem, 44, (12), 2009, p5018-22 Journal Article, 2009 DOI

Sheridan H, Butterly S, Walsh JJ, Cogan C, Jordan M, Nolan O, Frankish N, Synthesis and pharmacological activity of aminoindanone dimers and related compounds, Bioorganic and Medicinal Chemistry, 16, (1), 2008, p248 - 254 Journal Article, 2008 URL DOI

Barlow JW, Walsh JJ, Synthesis and evaluation of 4-amino-3,4-dihydro-2H-naphthalen-1-one derivatives as mast cell stabilising and anti-inflammatory compounds, European Journal of Medicinal Chemistry, 43, (12), 2008, p2891 - 2900 Journal Article, 2008 URL DOI

Walsh JJ, Coughlan D, Heneghan N, Gaynor C, Bell A., A Novel Artemisinin-Quinine Hybrid with Potent Antimalarial Activity., Bioorganic and Medicinal Chemistry Letters, 17, (13), 2007, p3599 - 3602 Journal Article, 2007 DOI URL

Walsh JJ, Coughlan D, Heneghan N, Gaynor C, Bell A, A novel artemisinin-quinine hybrid with potent antimalarial activity, Bioorganic and Medicinal Chemistry Letters, 17, (13), 2007, p3599 - 3602 Journal Article, 2007 URL

Douglas RH, Muldowney CA, Mohamed R, Keohane F, Shanahan C, Kavanagh PV, Walsh JJ, Detection and quantification of valerenic acid in commercially available valerian products, Journal of Chemical Education, 84, (5), 2007, p829 - 831 Journal Article, 2007 DOI URL

Gillian Hudson, Design, synthesis and evaluation of novel tumour vasculature-targeting agents (PhD Thesis), 2007 Thesis, 2007 URL

Walsh JJ, Coughlan D, Heneghan N, Gaynor C, Bell A., A novel artemisinin-quinine hybrid with antimalarial activity., 11th International Congress of Parasitology, Glasgow, Aug, 2006 Meeting Abstract, 2006

Walsh JJ, Treacy S, Dunne A, Kavanagh PV, A Simple Method For The Identification of Common Herbal/Alternative health products by Gas Chromatography/Mass Spectrometry, 12th International symposium on separation sciences, Lipica, Slovenia, Sept 27-29, 2006, pp334- Meeting Abstract, 2006

Kavanagh PV, McCarthy S, Walsh JJ, Identification and quantitation of lovastatin in red yeast rice, 12th International symposium on separation sciences, Lipica, Slovenia, Sept 27-29, 2006, pp335- Meeting Abstract, 2006

Byrne A, Walsh JJ, Studies on the Mast cell stabilising properties of plant extracts with reputed anti-inflammatory activity, 34th meeting of the European histamine research society, Bled, Slovenia, 2005 May 11-14, 2005, pp7- Meeting Abstract, 2005

White M, Walsh JJ., Sodium Azide: A mild and selective deprotecting reagent for use in the synthesis of novel inhibitors of endothelial cell proliferation, Fifth interdisciplinary euroconference on angiogenesis, Sitges, Spain , May 27-30, 2005, pp114- Meeting Abstract, 2005

Screening for aminopeptidase inhibitors using silica gel thin layer chromatography, Hudson GJ, Ryan EP, Walsh JJ, British Microcirculation Society, 41st Scientific meeting and symposium: Tumour microcirculation: Development and Therapeutic targets, Sheffield, Apr 5-6, 2004, pp37- Meeting Abstract, 2004

A.L. Simplício, J.F. Gilmer, N. Frankish, H. Sheridan, J.J. Walsh and J.M. Clancy, Ionisation characteristics and elimination rates of some aminoindanones determined by capillary electrophoresis, Journal of Chromatography A, 1045, (1-2), 2004, p233 - 238 Journal Article, 2004 DOI

Simplício AL, Gilmer JF, Frankish N, Sheridan H, Walsh JJ, Clancy JM., Ionisation characteristics and elimination rates of some aminoindanones determined by capillary electrophoresis, Journal of Chromatography A, 1045, (1/2), 2004, p233 - 238 Journal Article, 2004 URL

Doyle AM, Reilly J, Murphy N, Kavanagh PV, O'Brien JE, Walsh MS, Walsh JJ, Nature's sedative: Isolation and structural elucidation of valtrate from Centranthus ruber, Journal Of Chemical Education, 81, (10), 2004, p1486 - 1487 Journal Article, 2004 DOI URL

Byrne A, Donnelly C, Mills C, Walsh JJ, A study on the mast cell stabilising properties of Sargentodoxa cuneata, 33rd annual meeting of theEuropean histamine research society, Düsseldorf / Köln, Germany, Apr 28-May2, 2004, pp29- Meeting Abstract, 2004

Mills C, Cleary BJ, Gilmer JF, Walsh JJ, Inhibition of acetylcholinesterase by Tea Tree oil, Journal Of Pharmacy and Pharmacology, 56, (3), 2004, p375 - 379 Journal Article, 2004 DOI URL

Walsh JJ, McCormack EM, Shah R, Endothelium as a target in the design of novel tumour vasculature targeting agents, Anticancer Research: Special edition, 24, 2004, p527 - 528 Journal Article, 2004

Richard Shah, The design and synthesis of novel inhibitors of tubulin polymerisation (Ph.D. Thesis), 2003 Thesis, 2003 URL

Cunningham D, Grayson DH, McArdle P, Walsh JJ, The bromination of (-)-camphorquinone, Tetrahedron-Asymmetry, 14, (9), 2003, p1197 - 1200 Journal Article, 2003 DOI URL

Emmet McCormack, Design, synthesis and in vitro evaluation of novel anti-cancer compounds (PhD Thesis), 2003 Thesis, 2003 URL

Walsh JJ, Frankish NF, Sheridan H, Byrne W, Indane dimer compounds with smooth muscle relaxing and/or mast cell stabilising and/or anti-inflammatory activity, 2002, US6423752 Patent, 2002

Walsh JJ, Frankish NF, Sheridan H, Byrne W, Jordan M, Indane compounds and their pharmaceutical use, 2002, US6433021 Patent, 2002

Carolan JC, Hook ILI, Walsh JJ, Hodkinson TR, Using AFLP markers for species differentiation and assessment of genetic variability of in vitro-cultured Papaver bracteatum (section Oxytona), In Vitro Cellular & Developmental Biology-Plant, 38, (3), 2002, p300 - 307 Journal Article, 2002 DOI URL

Walsh JJ, Frankish NF, Sheridan H, Byrne W, Indane compounds with smooth muscle relaxing and/or mast cell stabilising and/or anti-inflammatory activity, 2001, US6297399 Patent, 2001

Walsh JJ, Frankish NF, Sheridan H, Byrne W. Farrell R, Indane dimer compounds and their pharmaceutical use, 2001, US6300376 Patent, 2001

Walsh JJ, Walsh MS, Ni Bhrangain S, Kavanagh PV and Feely J, Red Valerian-Nature's Sedative, Irish Journal of Medical Science, 168, (141), 1999, p143- Journal Article, 1999

Comey N, Hook I, Sheridan H, Walsh J, James P., Isolation of (S)-(-)-2,3-dihydro-2,6-dimethyl-4H-benzopyran-4-one from roots of Leontopodium alpinum, Journal of Natural Products., 60, (2), 1997, p148 - 148-149 Journal Article, 1997 URL

Walsh JJ, Hook I, Kavanagh P, Reininger R., Naphthoquinone production by cultures of cape sundew (Drosera capensis), Pharmacy/Pharmacoloy Letters, 7, 1997, p93 - 95 Journal Article, 1997

Comey N, Hook I, Sheridan H, Walsh J. , Isolation of (S)-(-)-2,3-dihydro-2,6-dimethyl - 4H-benzopyran-4-one from roots of Leontopodium alpinum, Journal Of Natural Products (Lloydia) , 60, (2), 1997, p148-149 Journal Article, 1997 DOI

Davis AP, Walsh JJ., Steroid-based receptors with tunable cavities; Stepwise and direct syntheses of a C-3-symmetrical prototype, Chemical Communications, 1996, p449 - 451 Journal Article, 1996 URL

Davis AP, Menzer S, Walsh JJ. , Steroid-based receptors with tunable cavities; A series of polyhydroxylated macrocycles of varying size and flexibility, Chemical Communications , 1996, p453 - 456 Journal Article, 1996 URL

Davis AP, Walsh JJ, Amide bond formation via pentafluorothiophenyl active esters, Tetrahedron Letters, 35, (27), 1994, p4865 - 4868 Journal Article, 1994 DOI URL

Non-Peer-Reviewed Publications

Whyms SE, Nagar S, Luker HA, Lopez AD, Pigott M, Hodkinson TR, Sheridan H, Hansen IA & Walsh JJ, Repellent activity against Aedes aegypti and metabolomic profiling of Myrica gale L. essential oils from Irish boglands, Scientific Reports, 2026, phttps://doi.org/10.1038/s41598 Journal Article, 2026 URL DOI

Samuel Collyer, Design and Synthesis of Potent and Selective Anticancer Compounds Targeting Tubulin Polymerisation and Aminopeptidase N (Ph.D. Thesis), 2025 Thesis, 2025 URL

O'Dwyer M, Ryan T, Ryder S, D'Arcy DM, Walsh J. , Innovative Development and Evaluation of Professional Attributes through Integration of Science and Practice at First Year Pharmacy Level , Irish Network of Healthcare Educators Conference, TBSI, Trinity College Dublin, Dublin, Ireland , February 2020, 2020 Oral Presentation, 2020

CG Clerkin, M Matzinger, MA Selo, BN Talbot, JJ Walsh, C Ehrhardt, Nucleophilic substitution reactions of ergothioneine might be a novel xenobiotic deactivation mechanism, 32nd Annual Meeting of the Japanese Society for the Study of Xenobiotics, Tokyo, Japan, 29/11-01/12/2017, 2017 Oral Presentation, 2017

C Ehrhardt, S Nickel, MA Selo, CG Clerkin, JJ Salomon, B Talbot, JJ Walsh, OCTN1-mediated ergothioneine uptake protects lung epithelial cells from tobacco smoke-induced damage, FASEB J, Experimental Biology Meeting 2015, Boston, MA, 28/03-01/04/2015, 29, 2015, pp970.7 Meeting Abstract, 2015

Elaine Breen, The design, synthesis and preliminary evaluation of prodrugs and hybrid drugs with tubulin polymerisation inhibitory activity and anti-proliferative activity (Ph.D. Thesis), 2013 Thesis, 2013 URL

Ekatherine M. Prokopiou, Preclinical evaluation of novel tumour vasculature disrupting agents (Ph.D. Thesis), 2013 Thesis, 2013 URL

Adrian Coogan, Design and synthesis of tubulin-binding agents, and their incorporation into novel dual-acting hybrid molecules targeting the tumour vasculature (Ph.D. Thesis), 2013 Thesis, 2013 URL

Deirdre Finn, Studies on the design, synthesis and stability of novel anti-allergy agents, 2012 Thesis, 2012 URL

Tao Zhang, The synthesis of novel mast cell stabilisers from benzocycloalkanones (Ph.D. Thesis)), Trinity College Dublin, 2010 Thesis, 2010 URL

Paul O'Byrne, Pharmaceutical stability and prodrug studies on the antidepressant bupropion (Ph.D Thesis), 2010 Thesis, 2010 URL

James Barlow, Synthesis and pharmacological studies on a novel series of mast cell-stabilising tetrahydronaphthalenes and related compounds (Ph.D. Thesis), 2003 Thesis, 2003 URL

Neil Frankish, Helen Sheridan, John Walsh, Michael Jordan,, 'Indane compounds and their pharmaceutical use', N/A, US 6,433,021 B1, 2002, 2 September 2026, Venantius Limited, Dublin Patent, 2002 URL

Research Expertise

Description

My research is multidisciplinary, spanning pharmacognosy, chemical/pharmacological sciences, and educational research. This breadth is reflected in my publications as Senior Author, including papers in Chemical Communications, European Journal of Medicinal Chemistry, Current Pharmaceutical Design, Current Medicinal Chemistry, Bioorganic & Medicinal Chemistry Letters, Scientific Reports, Journal of Natural Products, European Journal of Pharmacology, British Journal of Pharmacology, Angiogenesis, Pharmaceutical Research, and Pharmaceutics, as well as in Journal of Chemical Education and Pharmacy . To date, funding for my research has been secured from Enterprise Ireland, Cancer Research Ireland, Research Ireland, the Irish Research Council for Science, Engineering and Technology, the Higher Education Authority, and the Department of Justice, Ireland. Support has also included funded PhD studentships from students" home institutions. As primary/sole supervisor, I have mentored and trained 19 PhD students to completion and a further student as secondary supervisor. In addition, I supervised five Pakistani-registered PhD students who completed substantial parts of their research during a six-month secondment to my laboratory. For the next four years, my research is supported through funding secured from Research Ireland. Looking ahead, herbal medicinal plant production must increasingly shift from wild cultivation to plant biotechnological production, as climate change is already destabilizing both supply and quality. This is evident from my work with the European Pharmacopoeia, where specifications for certain plant-based medicines needed to be revised to ensure regulatory compliance. In this regard, I am collaborating with the Luxembourg Institute of Science and Technology (LIST, https://www.list.lu/) and other EU partners on large-scale (300 L) biotechnological production of Irish medicinal and agriculturally important plants. We are in the final stages, with a 17 September deadline, of submitting a Horizon grant application titled "Forging solutions for agricultural applications through scalable plant cell factories." The requested total budget is €4 million, including €574,000 allocated to my work packages.

Projects

  • Title
    • Pre-clinical Development of Novel Anti-allergic Compounds
  • Summary
    • The work involved synthesis of lead compounds and evaluation of their effects in vitro and in vivo against passive cutaneous anaphylaxis.
  • Funding Agency
    • Enterprise Ireland
  • Date From
    • Oct 2004
  • Date To
    • Mar 2009
  • Title
    • Design of Tumour Homing Vasculature Targeting Agents
  • Summary
    • The project involved the synthesis of designed multiple ligands with homing properties to tumour vasculature.
  • Funding Agency
    • Irish Research Council for Science Engineering and Technology
  • Date From
    • 01-10-2008
  • Date To
    • 30-09-2011
  • Title
    • Design of Hybrid-based Tumour Homing Anti-angiogenesis Agents
  • Summary
    • The purpose of this work was to design, synthesise and evaluate the homing properties of hybrid-based anti cancer compounds.
  • Funding Agency
    • Irish Research Council for Science Engineering and Technology
  • Date From
    • 01-10-2008
  • Date To
    • 30-09-2011
  • Title
    • Studies on Novel Mast Cell Stabilising Compounds
  • Summary
    • The project involved in vitro and in vivo studies on novel mast cell stabilising compounds.
  • Funding Agency
    • Irish Research Council For Science Engineering and Technology
  • Date From
    • 01-10-2008
  • Date To
    • 30-09-2009
  • Title
    • Synthesis and evaluation of tunable cyclolactams for antimalarial therapy
  • Summary
    • The project involved the synthesis of peptide-based tunable cyclolactams and their in vitro evaluation against Plasmodium falciparum. In collaboration with Dr Angus Bell, Department of Microbiology, TCD.
  • Funding Agency
    • Enterprise Ireland
  • Date From
    • Jan. 2004
  • Date To
    • Apr. 2005
  • Title
    • Endothelium as a Target in the Design of Novel Anti-cancer agents
  • Summary
    • The purpose of the funding was to design novel inhibitors of tumour- angiogenesis and vascularisation.
  • Funding Agency
    • Cancer Research Ireland
  • Date From
    • Oct. 2003
  • Date To
    • Sept. 2006
  • Title
    • Pre-clinical Development of Novel Anti-allergic Compounds
  • Summary
    • Allergy Research: IF/2001/014: Research Innovation Fund.
  • Funding Agency
    • Enterprise Ireland
  • Date From
    • Dec 2001
  • Date To
    • Apr. 2004
  • Title
    • Discovery of Novel Anti-cancer compounds
  • Summary
    • HE/98/249: Applied Research Grant
  • Funding Agency
    • Enterprise Ireland
  • Date From
    • Oct. 1998
  • Date To
    • Mar. 2001
  • Title
    • Appraisal of Wound Healing Potentials of Bergenia purpurascens in Photodynamic therapy (PDT): A Combined Chemical, In Vitro and In Vivo Approach
  • Summary
    • The proposal aims to evaluate the potential of the phytochemical constituents in Bergenia purpurascens in photodynamic wound healing healing.
  • Funding Agency
    • Research Ireland
  • Date From
    • 01-03-2026
  • Date To
    • 28-02-2030

Keywords

ALLERGY; ASSAY; BASOPHILS; DRUG DISCOVERY; ENDOTHELIAL CELLS; HISTAMINE; MALARIA; MAST-CELLS; NATURAL PRODUCT SYNTHESIS; PROTEASES; VASCULAR ENDOTHELIAL GROWTH FACTOR (VEGF)

Recognition

Representations

Ireland representative on Committee 13b of the European Pharmacopoeia, Strasbourg. 2016

Awards and Honours

Henkel Award (Organic Chemistry) 1988

Deans Award for Innovation in Teaching 2015

Commendation for being shortlisted for a Provost's Teaching Award 2013

Memberships

The Society for Medicinal Plant Research 2022 – date

Phytochemical Society of Europe 1998 – date

European Histamine Research Society 2002 – date