Does solvent influence the ground-state tautomeric population of hypericin?
Nuclear magnetic resonance measurements indicate that hypericin exists in the same "normal" tautomeric form irrespective of whether the solvent is dimethyl sulfoxide or tetrahydrofuran. This result is discussed in the context of previous experimental and theoretical work. It is concluded that solvent perturbations cannot induce tautomerization in hypericin.
Wen
J
J
Department of Chemistry, Iowa State University, Ames, IA 50011, USA.
Chowdhury
P
P
Fulton
D B
DB
Datta
A
A
Das
K
K
Andreotti
A H
AH
Petrich
J W
JW
D000873:Anthracenes; D005454:Fluorescence Polarization; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010569:Perylene / Q000031:analogs & derivatives* / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D013054:Spectrophotometry, Atomic; D013237:Stereoisomerism
D000873:Anthracenes; D012997:Solvents; D010569:Perylene; C004965:hypericin