{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T16:17:24Z","timestamp":1787242644402,"version":"build-2736575974"},"reference-count":55,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2010,8,9]],"date-time":"2010-08-09T00:00:00Z","timestamp":1281312000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>In vitro antioxidant activity for 12 stannoxanes derived from Ph3SnCl (compounds 1-3), Ph2SnCl2 (compounds 4-6), Bu3SnCl (compounds 7-9), and Bu2SnCl2 (compounds 10-12), was assayed qualitatively by the chromatographic profile with 1,1-diphenyl-2-picrylhydrazil (DPPH) method and by two quantitative methods: the DPPH radical scavenging activity and Ferric-Reducing Antioxidant Power (FRAP) assays. The results were compared with those obtained with the starting materials 2-pyridine- carboxylic acid (I), 3-pyridinecarboxylic acid (II) and 4-pyridinecarboxylic acid (III), as well as with standard compounds, such as vitamin C and vitamin E, respectively. The in vitro antiradical activity with DPPH of diphenyltin derivative 5 showed a very similar behavior to vitamin C at a 20 \u00b5g\/mL concentration, whereas according to the FRAP method, compound 8 was better. This difference is due to the mechanism of the antioxidant process. The Structure-Activity Relationships (SAR) for both methods is also reported.<\/jats:p>","DOI":"10.3390\/molecules15085445","type":"journal-article","created":{"date-parts":[[2010,8,9]],"date-time":"2010-08-09T11:13:47Z","timestamp":1281352427000},"page":"5445-5459","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":57,"title":["Antioxidant Activity of Butyl- and Phenylstannoxanes Derivedfrom 2-, 3- and 4-Pyridinecarboxylic Acids"],"prefix":"10.3390","volume":"15","author":[{"given":"Alicia","family":"Corona-Bustamante","sequence":"first","affiliation":[{"name":"Facultad de Ciencias Qu\u00edmicas, Universidad de Colima, kil\u00f3metro 9 carretera Colima, Coquimatl\u00e1n, Col. Mexico. C.P. 28400, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan Manuel","family":"Viveros-Paredes","sequence":"additional","affiliation":[{"name":"Centro Universitario de Ciencias Exactas e Ingenier\u00edas, Universidad de Guadalajara, Laboratorio de Inmunofarmacolog\u00eda, Blvd. Marcelino Garc\u00eda Barrag\u00e1n No. 1421, esq. Calzada Ol\u00edmpica, C.P. 4430, Guadalajara, Jal., Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angelina","family":"Flores-Parra","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica, Centro de Investigaci\u00f3n y de Estudios Avanzados-IPN. Apartado, Postal 14-740. Mexico 07000, D. F., Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana Lilia","family":"Peraza-Campos","sequence":"additional","affiliation":[{"name":"Facultad de Ciencias Qu\u00edmicas, Universidad de Colima, kil\u00f3metro 9 carretera Colima, Coquimatl\u00e1n, Col. Mexico. C.P. 28400, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francisco J.","family":"Mart\u00ednez-Mart\u00ednez","sequence":"additional","affiliation":[{"name":"Facultad de Ciencias Qu\u00edmicas, Universidad de Colima, kil\u00f3metro 9 carretera Colima, Coquimatl\u00e1n, Col. Mexico. C.P. 28400, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda Teresa","family":"Sumaya-Mart\u00ednez","sequence":"additional","affiliation":[{"name":"Unidad Acad\u00e9mica de Agricultura, Universidad Aut\u00f3noma de Nayarit, Cd. de la Cultura \"Amado Nervo\", Boulevard Tepic-Xalisco s\/n. C.P. 63190. Tepic, Nayarit, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u00c1ngel","family":"Ramos-Organillo","sequence":"additional","affiliation":[{"name":"Facultad de Ciencias Qu\u00edmicas, Universidad de Colima, kil\u00f3metro 9 carretera Colima, Coquimatl\u00e1n, Col. Mexico. C.P. 28400, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2010,8,9]]},"reference":[{"key":"ref_1","first-page":"S7","article-title":"Metals in medicine. Keynote Lectures. KL01:The mitochondrial cell death pathway as a target for gold and other metal-based antitumor compounds","volume":"12","author":"Berners","year":"2007","journal-title":"J. Biol. Inorg. Chem."},{"key":"ref_2","first-page":"S7","article-title":"Metals in medicine. Keynote Lectures. KL02: Transplatinum compounds as anticancer agents. A real posibility?","volume":"12","author":"Farrell","year":"2007","journal-title":"J. Biol. Inorg. Chem."},{"key":"ref_3","first-page":"S7","article-title":"Metals in medicine. Keynote Lectures. KL03:The distribution and biotransformation of metal based anticancer agents in cancer cells and tumor models","volume":"12","author":"Hambley","year":"2007","journal-title":"J. Biol. Inorg. 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