正文 小果薔薇三萜酸類化學成分的研究(2 / 3)

化合物3白色粉末,10%濃硫酸-乙醇溶液顯紫紅色。1H-NMR(pyridine-d5,600MHz)δ:3.45(1H,dd,J=10.8,6.0Hz,H-3),5.45(1H,brs,H-12),2.63(1H,d,J=11.4Hz,H-18),1.24(3H,s,26-CH3),1.22(3H,s,23-CH3),1.05(3H,s,27-CH3),1.02(3H,s,25-CH3),1.00(3H,d,J=6.6Hz,30-CH3),0.95(3H,d,J=6.0Hz,29-CH3),0.88(3H,s,24-CH3)。13C-NMR(pyridine-d5,150MHz)。以上數據與文獻報道的ursolicacid基本一致[5],故鑒定該化合物為烏蘇酸(ursolicacid)。

化合物4白色粉末,10%濃硫酸-乙醇溶液顯紫紅色。1H-NMR(pyridine-d5,600MHz)δ:3.75(1H,d,J=2.4Hz,H-3β),4.29(1H,dt,J=7.2,3.6Hz,H-2),5.57(1H,brs,H-12),3.03(1H,s,H-18),2.32(1H,td,J=13.8,4.8Hz,H-15),1.88(1H,dd,J=12.0,4.2Hz,H-1),1.63(3H,s,27-CH3),1.40(3H,s,29-CH3),1.25(3H,s,23-CH3),1.10(3H,d,J=4.8Hz,30-CH3),1.10(3H,s,26-CH3),0.97(3H,s,25-CH3),0.89(3H,s,24-CH3),。13C-NMR(pyridine-d5,150MHz)。以上數據與文獻報道的euscaphicacid基本一致[3],故鑒定該化合物為2α,3α,19α-三羥基烏蘇-12-稀-28-酸,即薔薇酸(euscaphicacid)。

化合物5白色粉末,10%濃硫酸-乙醇溶液顯紫紅色。1H-NMR(pyridine-d5,600MHz)δ:3.38(1H,d,J=9.6Hz,H-3),4.10(1H,td,J=10.8,4.2Hz,H-2),5.55(1H,brs,H-12),3.60(1H,d,J=5.4Hz,H-19),1.63(3H,s,27-CH3),1.26(3H,s,23-CH3),1.18(3H,s,29-CH3),1.10(3H,s,30-CH3),1.08(3H,s,24-CH3),1.06(3H,s,25-CH3),1.01(3H,s,26-CH3)。13C-NMR(pyridine-d5,150MHz)。以上數據與文獻報道的arjunicacid基本一致[6],故鑒定該化合物為阿江欖仁尼酸(arjunicacid)。

化合物6白色粉末,10%濃硫酸-乙醇溶液顯紫紅色。1H-NMR(pyridine-d5,600MHz)δ:3.38(1H,d,J=9.0Hz,H-3),4.10(1H,dt,J=11.4,4.8Hz,H-2),5.57(1H,brs,H-12),3.04(1H,s,H-18),1.70(3H,s,27-CH3),1.42(3H,s,29-CH3),1.26(3H,s,23-CH3),1.10(3H,s,26-CH3),1.07(3H,s,24-CH3),1.00(3H,s,25-CH3),1.11(3H,d,J=7.2Hz,30-CH3)。13C-NMR(pyridine-d5,150MHz)。以上數據與文獻報道的tomenticacid基本一致[5],故鑒定該化合物為委陵菜酸(tomenticacid)。

化合物7白色粉末,10%濃硫酸-乙醇溶液顯紫紅色。1H-NMR(pyridine-d5,600MHz)δ:5.26(1H,d,J=9.6Hz,H-3),4.30(1H,td,J=10.2,4.2Hz,H-2),5.50(1H,brs,H-12),2.63(1H,d,J=11.4Hz,H-18),3.77(3H,s,OMe),8.00(1H,d,J=15.6Hz,H-7′),7.27(1H,s,H-6′),7.20(1H,s,H-2′),6.72(1H,d,J=15.6Hz,H-8′),1.22(3H,s,27-CH3),1.07(3H,s,23-CH3),1.04(3H,s,25-CH3),1.02(3H,s,26-CH3),0.99(3H,d,J=7.2Hz,30-CH3),0.95(3H,d,J=6.0Hz,29-CH3)。13C-NMR(pyridine-d5,150MHz)。以上數據與文獻報道的3β-E-feruloylcorosolicacid基本一致[7-9],故鑒定該化合物為3β-E-feruloylcorosolicacid。

化合物8白色粉末,10%濃硫酸-乙醇溶液顯紫紅色。1H-NMR(pyridine-d5,600MHz)δ:4.11(1H,d,J=9.6Hz,H-1),3.85(1H,d,J=2.4Hz,H-3),5.69(1H,brs,H-12),3.04(1H,s,H-18),1.67(3H,s,27-CH3),1.40(3H,s,29-CH3),1.26(3H,s,23-CH3),1.24(3H,s,26-CH3),1.21(3H,s,25-CH3),1.10(3H,d,J=6.6Hz,30-CH3),0.93(3H,s,24-CH3)。13C-NMR(pyridine-d5,150MHz)。以上數據與文獻報道的基本一致[10],故鑒定該化合物1β-羥基薔薇酸。

化合物9白色粉末,10%濃硫酸-乙醇溶液顯紫紅色。1H-NMR(pyridine-d5,600MHz)δ:4.27(1H,brd,J=10.8Hz,H-2),4.13(1H,brs,H-3),5.58(1H,brs,H-12),3.03(1H,s,H-18),3.74(1H,d,J=10.8Hz,H-23a),3.91(1H,d,J=10.8Hz,H-23b),1.66(3H,s,27-CH3),1.40(3H,s,29-CH3),1.12(3H,s,26-CH3),1.01(3H,s,25-CH3),1.09(3H,d,J=6.6Hz,30-CH3),0.85(3H,s,24-CH3)。13C-NMR(pyridine-d5,150MHz)。以上數據與文獻報道的myrianthicacid基本一致[11],故確定該化合物為千花木酸(myrianthicacid)。