赤芝水提取物中的三萜类成分(3)
化合物2 白色粉末;1H-NMR(CDCl3,400 MHz)δ:5.63(1H,s,H-12),3.27(1H,dd,J=10.6,5.5 Hz,H-3),2.24(3H,s,H-OAc),1.72(3H,s,H-30),1.33(3H,s,H-19),1.21(3H,d,J=7.2 Hz,H-27),1.02(3H,s,H-28),0.98(3H,d,J=7.7 Hz,H-21),0.88(3H,s,H-29),0.82(3H,s,H-18);13C-NMR(CDCl3,100 MHz)δ:33.1(C-1),27.0(C-2),77.3(C-3),39.0(C-4),51.2(C-5),36.5(C-6),198.9(C-7),151.6(C-8) ......
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