Towards a consensus structure of hypericin in solution: direct evidence for a single tautomer and different ionization states in protic and nonprotic solvents by the use of variable temperature gradient H-1 NMR
| dc.contributor.author | Skalkos, D. | en |
| dc.contributor.author | Tatsis, E. | en |
| dc.contributor.author | Gerothanassis, I. P. | en |
| dc.contributor.author | Troganis, A. | en |
| dc.date.accessioned | 2015-11-24T16:51:41Z | |
| dc.date.available | 2015-11-24T16:51:41Z | |
| dc.identifier.issn | 0040-4020 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/9768 | |
| dc.rights | Default Licence | - |
| dc.subject | hypericin | en |
| dc.subject | bay region | en |
| dc.subject | nonprotic | en |
| dc.subject | naphthodianthrone | en |
| dc.subject | photodynamic therapy | en |
| dc.subject | pseudohypericin | en |
| dc.subject | spectroscopy | en |
| dc.subject | virus | en |
| dc.title | Towards a consensus structure of hypericin in solution: direct evidence for a single tautomer and different ionization states in protic and nonprotic solvents by the use of variable temperature gradient H-1 NMR | en |
| heal.abstract | Hypericin, a meso-naphthodianthrone derivative, displays two types of electronic spectra in organic solvents, attributed to the existence of two tautomeric structures. Variable temperature gradient H-1 NMR studies demonstrate the occurrence of only one 7,14-dioxo tautomeric form, for the molecule of hypericin in protic and in nonprotic solvents, differing only in the degree of ionization of the 4-hydroxyl group in the bay region. (C) 2002 Elsevier Science Ltd. All rights reserved. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | Doi 10.1016/S0040-4020(02)00419-2 | - |
| heal.identifier.secondary | <Go to ISI>://000176179800020 | - |
| heal.identifier.secondary | http://ac.els-cdn.com/S0040402002004192/1-s2.0-S0040402002004192-main.pdf?_tid=40d3e34a-3247-11e3-8019-00000aab0f6b&acdnat=1381476916_80ab4472c0cabc0d34724279e0bb4c28 | - |
| heal.journalName | Tetrahedron | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2002 | - |
| heal.publisher | Elsevier | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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