正文 廣東紫珠中咖啡酰基苯乙醇苷類化合物(2 / 3)

化合物3白色無定形粉末。ESI-MS m/z 623 [M-H]-;1H-NMR(CD3OD,400 MHz)δ:7.58(1H,d,J=16.0 Hz,H-7),7.05(1H,d,J=2.0 Hz,H-2),6.95(1H,dd,J=2.0,8.0 Hz,H-6),6.77(1H,d,J=8.0 Hz,H-5),6.69(1H,d,J=8.0 Hz,H-5),6.67(1H,d,J=2.0 Hz,H-2),6.56(1H,dd,J=2.0,8.0 Hz,H-6),6.27(1H,d,J=16.0 Hz,H-8),5.18(1H,d,J=1.6 Hz,H-1″),4.90(1H,t,J=9.2 Hz,H-4′),4.36(1H,d,J=7.2 Hz,H-1′),4.03(1H,m,H-8a),3.91(1H,dd,J=1.6,3.2 Hz,H-2″),3.83~3.78(1H,m,H-6′a),3.81(1H,t,J=9.2 Hz,H-3′),3.73(1H,m,H-8b),3.63~3.57(1H,m,H-6′b),3.63~3.57(1H,m,H-3″),3.63~3.57(1H,m,H-5″),3.56~3.50(1H,m,H-5′),3.39(1H,t,J=8.8 Hz,H-2′),3.28(1H,t,J=9.2 Hz,H-4″),2.79(2H,br t,J=7.2 Hz,H-7),1.09(3H,d,J=6.4 Hz,H-6″),13C-NMR(CD3OD,100 MHz)。以上數據與文獻[8]數據基本一致,鑒定化合物3為毛蕊花糖苷(acteoside)。

化合物4白色無定形粉末。ESI-MS m/z 665 [M-H]-;1H-NMR(CD3OD,400 MHz)δ:7.59(1H,d,J=16.0 Hz,H-7),7.04(1H,d,J=1.6 Hz,H-2),6.91(1H,dd,J=1.6,8.0 Hz,H-6),6.77(1H,d,J=8.0 Hz,H-5),6.63(1H,d,J=1.6 Hz,H-2),6.64(1H,d,J=8.0 Hz,H-5),6.49(1H,dd,J=1.6,8.0 Hz,H-6),6.26(1H,d,J=16.0 Hz,H-8),4.90(1H,br s,H-1″),4.79(1H,t,J=9.2 Hz,H-2′),4.50(1H,dd,J=2.0,12.0 Hz,H-6′a),4.47(1H,d,J=8.4 Hz,H-1′),4.36(1H,dd,J=5.6,12.0 Hz,H-6′b), 4.00~3.93(1H,m,H-2″),4.00~3.93(1H,m,H-5″),3.96(1H,m,H-8a),3.69~3.61(1H,m,H-8b),3.69~3.61(1H,m,H-3″),3.60~3.56(1H,m,H-5′),3.48(1H,t,J=9.2 Hz,H-3′),3.40~3.35(1H,m,H-4″),3.37(1H,t,J=9.2 Hz,H-4′), 2.68(2H,brt,J=7.6 Hz,H-7), 1.97(3H,s,-2′COCH3),1.23(3H,d,J=6.4 Hz,H-6″);13C-NMR(CD3OD,100 MHz)。以上數據與文獻[6]基本一致,化合物4鑒定為管花苷B(tubuloside B)。

化合物5白色無定形粉末。ESI-MS m/z 623 [M-H]-;1H-NMR(CD3OD,400 MHz)δ:7.59(1H,d,J=16.0 Hz,H-7),7.04(1H,d,J=2.0 Hz,H-2),6.67(1H,d,J=2.0 Hz,H-2),6.88(dd,J=2.0,8.0 Hz,H-6),6.77(1H,d,J=8.0 Hz,H-5),6.53(1H,dd,J=2.0,8.0 Hz,H-6),6.26(1H,d,J=16.0 Hz,H-8), 5.16(1H,br s,H-1″),4.49(1H,dd,J=2.0,12.0 Hz,H-6′a),4.35(1H,dd,J=5.6,12.0 Hz,H-6′b),4.32(1H,d,J=8.0 Hz,H-1′),4.00~3.94(1H,m,H-2″),4.00~3.94(1H,m,H-5″),3.96(1H,m,H-8a),3.72~3.67(1H,m,H-8b),3.72~3.67(1H,m,H-3″),3.55~3.50(1H,m,H-5′),3.52(1H,t,J=8.8 Hz,H-3′), 3.42~3.37(1H,m,H-4″),3.40(1H,t,J=9.2 Hz,H-4′),3.14(1H,t,J=8.4 Hz,H-2′),2.77(2H,br t,J=7.2 Hz,H-7),1.24(3H,d,J=6.4 Hz,H-6″);13C-NMR(CD3OD,100 MHz)。以上數據與文獻[9]基本一致,化合物5鑒定為異毛蕊花糖苷(isoacteoside)。

化合物6白色無定形粉末。ESI-MS m/z 769 [M-H]-;1H-NMR (CD3OD,400 MHz)δ:7.65(1H,d,J=16.0 Hz,H-7″″),7.18(1H,d,J=2.0 Hz,H-2″″),7.08(1H,dd,J=2.0,8.0 Hz,H-6″″),6.81(1H,d,J=8.0 Hz,H-5″″),6.68(1H,d,J=8.0 Hz,H-5),6.65(1H,d,J=2.0 Hz,H-2),6.57(1H,dd,J=2.0,8.0 Hz,H-6),6.35(1H,d,J=16.0 Hz,H-8″″),5.19(1H,d,J=1.6 Hz,H-1),4.93(1H,t,J=9.2 Hz,H-4″),4.90(1H,d,J=2.0 Hz,H-1),4.36(1H,d,J=7.6 Hz,H-1′),4.00(1H,m,H-8a),3.92(1H,d,J=9.6 Hz,H-4a),3.90(1H,br s,H-2″),3.88(3H,s,3″″-OCH3),3.86(1H,d,J=2.0 Hz,H-2),3.80(1H,t,J=9.2 Hz,H-3′),3.78~3.72(1H,m,H-6′a),3.74~3.69(1H,m,H-5′),3.70(1H,d,J=9.6 Hz,H-4′b),3.69~3.65(1H,m,H-8b),3.58~3.54(1H,m,H-3″),3.58~3.54(1H,m,H-5″),3.54(2H,s,H-5),3.49~3.56(1H,m,H-6′b),3.39(1H,t,J=8.8 Hz,H-2′),3.29(1H,overlap,H-4″),2.79(2H,t,J=7.2 Hz,H-7),1.09(3H,d,J=6.4 Hz,H-6″);13C-NMR(CD3OD,100 MHz)。以上數據與文獻[10]數據基本一致,鑒定化合物6為alyssonoside。

化合物7白色無定形粉末。ESI-MS m/z 797[M-Na]-;1H-NMR (CD3OD,400 MHz)δ:7.59(1H,d,J=16.0 Hz,H-7″″),7.05(1H,d,J=2.0 Hz,H-2″″),6.95(1H,dd,J=2.0,8.4 Hz,H-6″″),6.78(1H,d,J=8.4 Hz,H-5″″),6.67(1H,d,J=8.0 Hz,H-5),6.65(1H,d,J=2.0 Hz,H-2),6.53(1H,dd,J=2.0,8.0 Hz,H-6),6.26(1H,d,J=16.0 Hz,H-8″″),5.01(1H,t,J=9.2 Hz,H-4′),4.98(1H,t,J=9.2 Hz,H-3′),4.90(1H,d,J=2.0 Hz,H-1),4.86(1H,dd,J=8.0,9.2 Hz,H-2′),4.79(1H,br s,H-1″),4.51(1H,d,J=8.0 Hz,H-1′),4.05(1H,m,H-8a),3.92(1H,d,J=9.6 Hz,H-4′a),3.86(1H,d,J=2.0 Hz,H-2′),3.75~3.72(1H,m,H-6′a),3.75~3.72(1H,m,H-5′),3.73(1H,d,J=9.6 Hz,H-4′b),3.69~3.65(1H,m,H-8b),3.62(1H,br s,H-2″),3.55(2H,s,H-5),3.52~3.49(1H,m,H-3″),3.52~3.49(1H,m,H-5″),3.52~3.49(1H,m,H-6′b),3.25(1H,t,J=9.6 Hz,H-4″),2.70(2H,brt,J=7.2 Hz,H-7),1.98(3H,s,2′-COCH3),1.06(3H,d,J=6.4 Hz,H-6″);13C-NMR(CD3OD,100 MHz)。以上數據與文獻[11]數據基本一致,鑒定化合物7為2′-乙酰基連翹酯苷B(2′-acetylforsythoside B)。