贵州天名精中倍半萜内酯类的化学成分研究(5)
化合物7 无色油状; 1H-NMR(CD3OD, 500 MHz)δ:6.13(1H, d,J=3.3 Hz, Ha-13), 5.63(1H, d,J=3.3 Hz, Hb-13),5.83(1H, brs, H-9), 4.90(1H, m, overlapped,H-8), 1.82(1H, m, H-5), 3.18(1H, m, H-1), 2,55(1H, m, H-7), 1.86(1H, m, overlapped,Ha-3), 1.70(1H, m, Hb-3), 2.25(1H, m, Ha-6), 1.32(1H, m, Hb-6), 2.02(1H, m, Ha-2), 1.59(1H, m ......
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