21甾体成分研究> 青阳参中C21甾体成分研究(5)
化合物7 白色不定型粉末;1H-NMR(pyridine-d5,500 MHz)δ:3.86(1H,m,H-3),5.26(1H,s,H-6),5.32(1H,dd,J=4.0,11.5 Hz,H-12),2.13(3H,s,H-18),1.33(3H,s,H-19),4.08(1H,q,J=6.0 Hz,H-20),1.30(3H,d,J=6.0 Hz,H-21),6.94(1H,d,J=16.0 Hz,H-2′),8.14(1H,d,J=16.0 Hz,H-3′),7.39(1H,m,H-5′),7.25(1H,m,H-6′),7.25(1H,m,H-7′),7.25(1H,m,H-8′),7.39(1H,m,H-9′),5.26(1H,d,J=9.5 Hz ......
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