9—O—烃基取代巴马亭衍生物的合成和结构表征(3)
化合物1f HR-ESI-MS m/z 450.265 2(C28H36NO4+,计算值450.264 4 [M-Br]+)。1H-NMR(DMSO-d6,500 MHz)δ:9.73(1H,s,H-8),9.02(1H,s,H-13),8.19(1H,d,J=9.0 Hz,H-11),8.01(1H,d,J=9.0 Hz,H-12),7.71(1H,s,H-1),7.09(1H,s,H-4),4.95(2H,t,J=7.0 Hz,H-6),4.28(2H,t,J=6.0 Hz,H-1′),4.04(3H,s,-OCH3),3.93(3H,s,-OCH3),3.86(3H,s,-OCH3),3.22(2H,t,J=7.0 Hz,H-5),1.87(2H,m,H-2′),1.46(2H,m,H-3′) ......
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