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铁皮石斛联苄类化学成分的研究(二)

发帖时间:2025-01-06 21:38:16

化合物2 白色无定形粉末;ESI-MS m/z 273 -。铁皮1H-NMR (CD3OD,石斛400 MHz) δ: 6.31 (1H,联苄类化 d, J = 1.6 Hz, H-2),6.25 (1H,学成 d, J = 1.6 Hz, H-6),6.97 (2H,研究 d, J = 8.4 Hz, H-2', 6'),6.67 (2H,铁皮 d, J = 8.4 Hz, H-3', 5'),2.74 (4H,石斛 m, H-α, α'),3.76 (3H,联苄类化 s, 4-OMe),3.74 (3H,学成 s, 5-OMe);13C-NMR (CD3OD,100 MHz) δ: 139.5 (C-1),研究110.5 (C-2),铁皮154.4 (C-3),石斛136.0 (C-4),联苄类化151.5 (C-5),学成105.7 (C-6),研究134.3 (C-1'),130.7 (C-2', 6'),116.2 (C-3', 5'),156.7 (C-4'),39.7 (C-α),38.4 (C-α'),61.2 (4-OMe),57.0 (5-OMe)。参考文献报道,鉴定化合物为3,4'-二羟基-4,5-二甲氧基联苄。

化合物3 白色无定形粉末;ESI-MS m/z 467 -。1H-NMR (CD3OD,400 MHz) δ: 6.40 (1H, d, J = 1.6 Hz, H-3),6.33 (1H, d, J = 1.6 Hz, H-5),6.71 (2H, br s, H-3', 5'),2.75 (4H, m, H-1'', 2''),6.95 (1H, d, J = 8.4 Hz, H-4'', 8''),6.66 (1H, d, J = 8.4 Hz, H-5'', 7''),4.82 (1H, d, J = 8.4 Hz, H-3'''),3.97 (1H, m, H-4'''),3.68 (1H, dd, J = 3.6, 12.4 Hz, H-5'''a),3.46 (1H, dd, J = 3.6, 12.4 Hz, H-5'''b),3.79 (3H, s, 6-OMe),3.85 (6H, s, 2', 6'-OMe);13C-NMR (CD3OD,100 MHz) δ: 132.6 (C-1),145.6 (C-2),110.8 (C-3),134.1 (C-4),106.5 (C-5),149.8 (C-6),137.2 (C-1'),149.5 (C-2', 6'),106.0 (C-3', 5'),128.8 (C-4'),39.3 (C-1''),38.4 (C-2''),135.8 (C-3''),130.6 (C-4'', 8''),116.1 (C-5'', 7''),156.5 (C-6''),77.9 (C-3'''),80.0 (C-4'''),62.3 (C-5'''),56.7 (6-OMe),56.9 (2', 6'-OMe)。参考文献报道,鉴定化合物为6''-de-O-methyldendrofindlaphenol A。

化合物4 淡黄色油状物;ESI-MS m/z 273 -。1H-NMR (CD3Cl3,400 MHz) δ: 6.25 (1H, d, J = 1.8 Hz, H-2),6.46 (1H, d, J = 1.8 Hz, H-6),7.10 (2H, d, J = 8.6 Hz, H-2', 6'),6.83 (2H, d, J = 8.6 Hz, H-3', 5'),2.80 (4H, m, H-α, α'),3.83 (3H, s, 5-OMe),3.80 (3H, s, 4'-OMe);13C-NMR (CD3Cl3,100 MHz) δ: 130.5 (C-1),103.6 (C-2),134.0 (C-3),133.8 (C-4),146.9 (C-5),108.8 (C-6),130.5 (C-1'),129.5 (C-2', 6'),113.7 (C-3', 5'),157.8 (C-4'),38.2 (C-α),37.3 (C-α'),56.2 (5-OMe),55.4 (4'-OMe)。参考文献报道,鉴定化合物为3,4-二羟基-4',5-二甲氧基联苄

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相关链接:化合物二羟基二甲氧基联苄

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