大株红景天的化学成分及体外抗肿瘤转移活性研究(4)
化合物7白色粉末。ESI-MSm/z456[M+H]+(分子式C21H25NO11)。1H-NMR(DMSO-d6,400MHz)δ:7.84(2H,s,H-2,6),4.98(2H,s,H-7),6.96(1H,J=6.4Hz,H-9),4.45(1H,dd,J=14.6Hz,6.4Hz,H-10a),4.42(1H,dd,J=14.6Hz,6.8Hz,H-10b),4.25(1H,J=7.6Hz,H-1′),2.90~3.80(6H,糖),3.80(6H,s,-OCH3×2);13C-NMR(DMSO-d6,100MHz)δ:118.3(C-1),106.9(C-2,6),147.6(C-3,5),141.2(C-4),63.3(C-7),110.9(C-8),148.5(C-9),66.3(C-10),164.9(C=O),115.4(CN),102.7(C-1′) ......
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