Two very unusual macrocyclic flavonoids from the water lily Nymphaea lotus.
Three novel flavonols, myricetin-3'-O-(6"-p-coumaroyl)glucoside and two epimeric macrocyclic derivatives, as well as the known myricetin-3-O-rhamnoside and pentagalloyl glucose, have been isolated from the wild water lily Nymphaea lotus L. and identified using 2D NMR. This is the first report of such a macrocycle from any source.
Elegami
Awatif A
AA
Department of Pharmaceutical Sciences, Strathclyde Institute for Biomedical Sciences, University of Strathclyde, 27 Taylor Street, Glasgow G4 0NR, UK.
Bates
Catharine
C
Gray
Alexander I
AI
Mackay
Simon P
SP
Skellern
Graham G
GG
Waigh
Roger D
RD
D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D030721:Nymphaea / Q000737:chemistry*
D005419:Flavonoids