藏药印度獐芽菜石油醚部位化学成分及体外活性研究(4)
化合物9 白色粉末。ESI-MS m/z 443 [M+H]+,487.4 [M+COO]-。1H-NMR(CDCl3,600 MHz) δ: 5.19(1H,t,J=3.4 Hz,H-12),3.55(1H,d,J=11.0 Hz,H-28a),3.21(1H,d,J=11.0 Hz,H-28b),3.21(1H,m,H-3),1.16(3H,s,H-27),0.99(3H,s,H-24),0.94(3H,s,H-26),0.93(3H,s,H-25),0.89(3H,s,H-30),0.87(3H,s,H-29),0.79(3H,s,H-23); 13C-NMR(CDCl3,150 MHz) δ: 38.6(C-1),27.2(C-2) ......
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