鸭跖草的化学成分研究(2)
3结构鉴定化合物1 黄色粉末,ESI-MS m/z 485 [M+Na]+ 。1H-NMR(DMSO-d6,300 MHz)δ: 12.96(1H,s,5-H),7.61(1H,d,J=1.8 Hz,H-2′),7.59(1H,dd,J=15.6 Hz,H-6′),6.98(1H,s,H-3),6.94(1H,d,J=8.7 Hz,H-5′),6.87(1H,d,J=2.1 Hz,H-8),6.45(1H,d,J=2.1 Hz,H-6),5.08(1H,d,J=7.5 Hz,H-1″),3.89(3H,s,-OMe);13C-NMR(DMSO-d6,75 MHz)δ: 182.1(C-4),164.2(C-2),163.0(C-7),161.1(C-5),156.9(C-9),151.0(C-3′),148.1(C-4′) ......
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