Acidic properties of hypericin and its octahydroxy analogue in the ground and excited states

Dalia Freeman, Felix Frolow, Evgeny Kapinus, David Lavie, Gad Lavie, Dan Meruelo, Yehuda Mazur*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

pH dependent absorption and fluorescence spectra of hypericin 1 and its octahydroxy analogue 3 demonstrate their acidic properties, their deprotonation occuring in the ground and excited states from OH in the bay region and in the peri position to the carbonyl, respectively; the presence of the anion of 1 in the crystalline state is established by X-ray diffraction.

Original languageEnglish
Pages (from-to)891-892
Number of pages2
JournalChemical Communications
Issue number7
DOIs
StatePublished - 1994
Externally publishedYes

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