合欢花乙酸乙酯部位化学成分研究(6)
化合物22 白色晶体(氯仿),mp 163~165 ℃;HR-ESI-MS m/z 427.341 5[M+H]+(计算值 427.341 9);1H-NMR(CDCl3,600 MHz) δ:6.55(1H,d,J=8.5 Hz,H-6),6.26(1H,d,J = 8.5 Hz,H-7),5.41(1H,dd,J=6.0,1.9 Hz,H-11),5.18(1H,dd,J=15.2,8.2 Hz,H-23),5.14(1H,dd,J=15.2,8.2 Hz,H-22),3.99(1H,m,H-3),1.07(3H,s,H-19),0.97(3H,d,J=6.6 Hz,H-21),0.89(3H,d,J=6.8 Hz,H-28),0.81(3H,d,J=6.8 Hz,H-27),0.79(3H,d,J=6.8 Hz ......
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