1
|
Magalhães ÁF, Powner MW. Prebiotic triose glycolysis promoted by co-catalytic proline and phosphate in neutral water. Chem Commun (Camb) 2022; 58:13519-13522. [PMID: 36398592 DOI: 10.1039/d2cc05466c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Proline and phosphate promote a near-quantitative aldol reaction between glycolaldehyde phosphate and formaldehyde at neutral pH in water. Our results demonstrate the important role of general acid-base catalysis in water and underscore the essential role that amino acid catalysis may have played in early evolution of life's core metabolic pathways.
Collapse
Affiliation(s)
- Álvaro F Magalhães
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
| | - Matthew W Powner
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
| |
Collapse
|
2
|
Loureiro DRP, Magalhães ÁF, Soares JX, Pinto J, Azevedo CMG, Vieira S, Henriques A, Ferreira H, Neves N, Bousbaa H, Reis S, Afonso CMM, Pinto MMM. Yicathins B and C and Analogues: Total Synthesis, Lipophilicity and Biological Activities. ChemMedChem 2020; 15:749-755. [PMID: 32162478 DOI: 10.1002/cmdc.201900735] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/03/2020] [Indexed: 12/19/2022]
Abstract
Natural products have always been an important source of new hits and leads in drug discovery, with the marine environment being regarded as a significant source of novel and exquisite bioactive compounds. Yicathins B and C are two marine-derived xanthones that have shown antibacterial and antifungal activity. Herein, the total synthesis of these yicathins and six novel analogues is reported for the first time. As marine natural products tend to have very lipophilic scaffolds, the lipophilicity of yicathins and their analogues was evaluated in the classical octanol/water system and a biomimetic model-based system. As the xanthonic nucleus is a "privileged structure", other biological activities were evaluated, namely antitumor and anti-inflammatory activities. An interesting anti-inflammatory activity was identified for yicathin analogues that paves the way for the design of dual activity (anti-infective and anti-inflammatory) marine-inspired xanthone derivatives.
Collapse
Affiliation(s)
- Daniela R P Loureiro
- Department of Chemical Sciences, Laboratory of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal.,Interdisciplinary Center of Marine and Environmental Investigation (CIIMAR/CIMAR) Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208, Matosinhos Porto, Portugal
| | - Álvaro F Magalhães
- Department of Chemical Sciences, Laboratory of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - José X Soares
- LAQV-REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Joana Pinto
- Department of Chemical Sciences, Laboratory of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Carlos M G Azevedo
- Department of Chemical Sciences, Laboratory of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Sara Vieira
- I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Parque de Ciência e Tecnologia - Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal.,ICVS/3B's -, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Ana Henriques
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116, Gandra PRD, Portugal
| | - Helena Ferreira
- I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Parque de Ciência e Tecnologia - Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal.,ICVS/3B's -, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Nuno Neves
- I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Parque de Ciência e Tecnologia - Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal.,ICVS/3B's -, PT Government Associate Laboratory, Braga/Guimarães, Portugal.,The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Avepark, 4805-017, Barco, Guimarães, Portugal
| | - Hassan Bousbaa
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116, Gandra PRD, Portugal
| | - Salette Reis
- LAQV-REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Carlos M M Afonso
- Department of Chemical Sciences, Laboratory of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal.,Interdisciplinary Center of Marine and Environmental Investigation (CIIMAR/CIMAR) Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208, Matosinhos Porto, Portugal
| | - Madalena M M Pinto
- Department of Chemical Sciences, Laboratory of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal.,Interdisciplinary Center of Marine and Environmental Investigation (CIIMAR/CIMAR) Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208, Matosinhos Porto, Portugal
| |
Collapse
|
3
|
Magalhães ÁF, Graça VC, Calhelha RC, Ferreira Machado IL, Ferreira LFV, Ferreira ICFR, Santos PF. Synthesis, photochemical and in vitro cytotoxic evaluation of benzoselenazole-based aminosquaraines. Photochem Photobiol Sci 2019; 18:336-342. [PMID: 30310913 DOI: 10.1039/c8pp00201k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Squaraine dyes have recently attracted interest as potential second generation photosensitizers for photodynamic therapy. Several cationic aminosquaraine dyes bearing benzoselenazole terminal nuclei were synthezised and their cytotoxic activity was tested against four different human tumor cell lines - breast (MCF-7), non-small cell lung (NCI-H460), cervical (HeLa) and hepatocellular (HepG2) carcinomas - and against a non-tumor porcine liver primary cell line (PLP2), both in the absence of light and under irradiation. All dyes, which displayed strong absorption within the phototherapeutic window, were found to exhibit photodynamic activity and were shown to be, in most cases, more cytotoxic, both in the dark and upon irradiation, than their benzothiazole analogues.
Collapse
Affiliation(s)
- Álvaro F Magalhães
- Centro de Química - Vila Real (CQ-VR), Universidade de Trás-os-Montes e Alto Douro, Vila Real, 5001-801, Portugal
| | - Vânia C Graça
- Centro de Química - Vila Real (CQ-VR), Universidade de Trás-os-Montes e Alto Douro, Vila Real, 5001-801, Portugal
| | - Ricardo C Calhelha
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, 5300-253, Portugal
| | - I L Ferreira Machado
- Centro de Química-Física Molecular and IN-Institute of Nanoscience and Nanotechnology, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa, 1049-001, Portugal.,Polytechnic Institute of Portalegre, Portalegre, P-7300-110, Portugal
| | - L F Vieira Ferreira
- Centro de Química-Física Molecular and IN-Institute of Nanoscience and Nanotechnology, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa, 1049-001, Portugal
| | - Isabel C F R Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, 5300-253, Portugal
| | - Paulo F Santos
- Centro de Química - Vila Real (CQ-VR), Universidade de Trás-os-Montes e Alto Douro, Vila Real, 5001-801, Portugal.
| |
Collapse
|
4
|
Magalhães ÁF, Graça VC, Calhelha RC, Ferreira ICFR, Santos PF. Aminosquaraines as potential photodynamic agents: Synthesis and evaluation of in vitro cytotoxicity. Bioorg Med Chem Lett 2017; 27:4467-4470. [PMID: 28807437 DOI: 10.1016/j.bmcl.2017.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 07/31/2017] [Accepted: 08/02/2017] [Indexed: 02/05/2023]
Abstract
The synthesis of several aminosquaraine cationic dyes displaying strong absorption within the so-called phototherapeutic window (650-850nm) is described. Their cytotoxicity, under dark and illuminated conditions, was tested against several human tumor cell lines (breast, lung, cervical and hepatocellular carcinomas) and non-tumor porcine liver primary cells. All compounds showed to inhibit the growth of the tumor cells upon irradiation more than in the absence of light, in more or less extension, clearly exhibiting photodynamic activity. The photosensitizing ability against some cell lines, together with the low toxicity for the non-tumor primary PLP2 cells displayed by some of the compounds synthetized, turns them into potential candidates as photosensitizers for PDT.
Collapse
Affiliation(s)
- Álvaro F Magalhães
- Chemistry Dep. and Chemistry Center - Vila Real (CQ-VR), University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal
| | - Vânia C Graça
- Chemistry Dep. and Chemistry Center - Vila Real (CQ-VR), University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal
| | - Ricardo C Calhelha
- Mountain Research Centre (CIMO), Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Isabel C F R Ferreira
- Mountain Research Centre (CIMO), Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - Paulo F Santos
- Chemistry Dep. and Chemistry Center - Vila Real (CQ-VR), University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal.
| |
Collapse
|