表 3. ¹H NMR data of aloe-emodin and its metal complex (DMSO-d₆) .

芦荟大黄素及其金属配合物的¹H NMR的数据（DMSO-d₆）

Compound	Chemical shift (δ)
Aloe-emodin Aloe-emodin-Iron (Ⅱ)	11.93 (1H, S, OH), 11.86 (1H, S, OH), 7.24 (1H, s), 7.35 (1H, d), 7.76 (1H, s), 7.65 (1H, d), 7.75 (1H, t), 5.60 (1H, s, −CH2OH), 4.60 (2H, d, -CH2), 7.09-7.72 (10H, m), 5.31−5.61 (2H, m, −CH2OH), 4.49−4.67 (4H, m, −CH2)
Aloe-emodin-copper (Ⅱ)	6.98−7.81 (10H, m), 5.21−5.61 (2H, m, −CH2OH), 4.39−4.62 (4H, m, −CH2)
Aloe-emodin-magnesium (Ⅱ)	11.80 (2H, S, OH), 6.90−7.81 (10H, m), 5.60 (2H, m, −CH2OH), 4.60 (4H, m, −CH2)