藏药甘青乌头化学成分研究(5)
化合物10 淡黄色无定形粉末,mp 220.0 ℃。ESI-MS m/z 1 071[M+Na]+,1 047[M-H]-;1H-NMR(DMSO-d6,600 MHz)δ : 6.45(1H,d,J=1.8 Hz,H-6),6.60(1H,d,J=1.8 Hz,H-8),8.17(2H,d,J=6.0 Hz,H-2′,6′),6.92(1H,d,J=6.0 Hz,H-3′,5′),5.12(1H,d,J=6.0 Hz,H-1″),4.65(1H,br s,H-1),4.22(1H,d,J=7.8 Hz,H-1″″),5.53(1H,br s,H-1″″′),0.97(3H,d,J=6.0 Hz,H-6),1.28(3H,d,J=6.0 Hz,H-6″″′),7.52(2H ......
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