21甾体成分研究> 青阳参中C21甾体成分研究(6)
化合物9 白色不定型粉末;1H-NMR(pyridine-d5,500 MHz)δ:3.85(1H,m,H-3),5.28(1H,s,H-6),5.34(1H,dd,J=4.0,11.5 Hz,H-12),2.09(3H,s,H-18),1.30(3H,s,H-19),2.41(3H,s,H-21),8.30(1H,d,J=8.5 Hz,H-3′),7.22(1H,d,J=8.5 Hz,H-4′),7.22(1H,d,J=8.5 Hz,H-6′),8.30(1H,d,J=8.5 Hz,H-7′),5.29(1H,d,J=9.5 Hz,H-1″),4.09(1H,m,H-3″),3.54(1H,m,H-4″),4.17(1H,m,H-5″),1.38(3H,d,J=6.0 Hz,H-6″),3.57(3H,s,H-7″) ......
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