甘青大戟中的甾体类和芳香族化学成分(2)
3结构鉴定化合物1 白色无定型固体; ESIMS m/z 431 [M+H]+,453[M+Na]+;1HNMR(acetoned6,500 MHz) δ:3.45(1H,m,H3),3.71(1H,d,J=4.5 Hz,OH3),5.55(1H,d,J=5.0 Hz,H6),3.76(1H,m,H7),3.02(1H,d,J=7.0 Hz,OH7),0.75(3H,s,H318),1.01(3H,s,H319),0.98(3H,d,J=7.0 Hz,H321),0.86(3H,d,J=6.5 Hz,H326),0.88(3H,d,J=7.0 Hz,H327),0.90(3H,t,J=7.0 Hz,H329); 13CNMR(acetoned6,125 MHz) δ:37.9(C1) ......
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