A new flavonone from seeds of

A new flavonone from seeds of Alpinia katsumadai and its neuroprotecti(3)

http://www.100md.com 2014年7月15日《中国中药杂志》 2014年第14期

A new flavonone from seeds of Alpinia katsumadai and its neuroprotective effect on PC12 cells

3Results and discussion

Compound 1 [α]25D-298.2(c 0.2， MeOH)，was obtained as light yellow power. Mp. 104～106 ℃； UV(MeOH) λmax(Log ε) 221.2(4.70)，293.1(4.84) nm； IR(KBr) νmax 3 213，1 726，1 634，1 496，1 163 cm^-1。Its HR-ESI-MS(m/z 403.116 5 [M+H]+，calcd. 403.116 8) gave the molecular formula C24H18O6. Compound 1 displayed yellow color under the fluorescent light and became bright yellow after spraying 1% AlCl3 in alcohol. Combining the 1H-NMR data ......

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