Structure and formation of the fluorescent compound of Lignum nephriticum.
The intense blue fluorescence of the infusion of Lignum nephriticum (Eysenhardtia polystachya), first observed in the sixteenth century, is due to a novel four-ring tetrahydromethanobenzofuro[2,3-d]oxacine which is not present in the plant but is the end product of an unusual, very efficient iterative spontaneous oxidation of at least one of the tree's flavonoids.
Acuña
A Ulises
AU
Instituto de Química-Física Rocasolano, CSIC, Serrano 119, 28006 Madrid, Spain. roculises@iqfr.csic.es
Amat-Guerri
Francisco
F
Morcillo
Purificación
P
Liras
Marta
M
Rodríguez
Benjamín
B
D005419:Flavonoids / Q000737:chemistry; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism; D006576:Heterocyclic Compounds, 4 or More Rings / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D013329:Structure-Activity Relationship
D005419:Flavonoids; D005456:Fluorescent Dyes; D006576:Heterocyclic Compounds, 4 or More Rings; C542616:matlaline