A new chromone glycoside from Rhododendron spinuliferum
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- Chen, G., Jin, H.Z., Li, X.F. et al. Arch. Pharm. Res. (2008) 31: 970. doi:10.1007/s12272-001-1253-y
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A new chromone glycoside, 3,5,7-trihydroxylchromone-3-O-α-L-arabinopyranoside (1), together with quercetin (2), (+)-catechin (3), (−)-epi-catechin (4) were isolated from the aerial parts of Rhododendron spinuliferum. The structure of 1 was elucidated on the basis of spectroscopic and 2D-NMR spectral analysis. In addition, 1 exhibited mild inhibitory effect on NO production in LPS-stimulated RAW264.7 cells.