Resveratrol and other phenolics from the bark of Yucca schidigera roezl.
Five phenolic constituents have been identified in Yucca schidigera bark, and their structures were established by spectral (FABMS and NMR) experiments. These included two known stilbenes, trans-3,4',5-trihydroxystilbene (resveratrol) and trans-3,3',5,5'-tetrahydroxy-4'-methoxystilbene, as well as three novel compounds, yuccaols A, B, and C, with spiro-structures rarely occurring in the plant kingdom. It is suggested that yuccaols A-C are biosynthethized via attachment of a stilbenic derivative to the carbocationic intermediate of the oxidative flavanone-flavonol conversion.
Oleszek
W
W
Department of Biochemistry, Institute of Soil Science and Plant Cultivation, ul. Czartoryskich 8, 24-100 Pulawy, Poland. WO@iung.pulawy.pl
Sitek
M
M
Stochmal
A
A
Piacente
S
S
Pizza
C
C
Cheeke
P
P
D005419:Flavonoids / Q000032:analysis / Q000737:chemistry; D019668:Liliaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008958:Models, Molecular; D008968:Molecular Conformation; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry* / Q000302:isolation & purification; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry; D000077185:Resveratrol; D016339:Spectrometry, Mass, Fast Atom Bombardment / Q000379:methods; D013267:Stilbenes / Q000737:chemistry* / Q000302:isolation & purification
D005419:Flavonoids; D010636:Phenols; D013267:Stilbenes; D000077185:Resveratrol