赤芝水提取物中的三萜类成分(6)
化合物15 白色粉末;1H-NMR(CDCl3,400 MHz)δ:5.61(1H,s,H-12),4.81(1H,t,J=4.4 Hz,H-7),3.20(1H,dd,J=10.4,6.0 Hz,H-3),2.21(3H,s,H-OAc),1.49(3H,s,H-30),1.26(3H,s,H-19),1.03(3H,s,H-28),0.99(3H,d,J=7.2 Hz,H-21),0.98(3H,s,H-18),0.85(3H,s,H-29);13C-NMR(CDCl3,100 MHz)δ:34.4(C-1),27.4(C-2),78.2(C-3),38.5(C-4),49.2(C-5),26.7(C-6),66.2(C-7),155.9(C-8),142.9(C-9),38.5(C-10),192.0(C-11) ......
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