医考必过

赤芝子实体的化学成分研究(2)

http://www.ykbg.net/ 来源:医考必过网 2016-01-29 15:52
2.2.2 化合物2白色结晶,mp112~113℃,分子式:C30H44O7. EI-MS m/z:516 [M] +,相对分子质量516.Liebermann-Burchard 反应阳性。1H-NMR(CDCl3 ,500 MHz) :4.79(1H,m,

2.2.2 化合物2白色结晶,mp112~113℃,分子式:C30H44O7. EI-MS m/z:516 [M] +,相对分子质量516.Liebermann-Burchard 反应阳性。1H-NMR(CDCl3 ,500 MHz) δ:4.79(1H,m, C15-H),4.62(1H,m,C7-H),1.28(3H,s,C19-CH3),1.26(3H,s,C28-CH3), 1.12(3H,s,C27-CH3),1.10(3H,s,C29-CH3),0.98(3H,s,C18-CH3), 0.90(3H,s,C21-CH3)。13C-NMR(CDCl3 , 125 MHz)δ:35.61(C-1),34.31(C-2),216.82(C-3),46.52(C-4),48.97(C-5),29.01(C-6),68.98(C-7),159.01(C-8),140.41(C-9), 38.08(C-10),119.55(C-11),51.75(C-12),46.83(C-13),53.96(C-14),72.50(C-15),36.26(C-16),47.90(C-17),17.29(C-18),19.32(C-19),32.62(C-20)19.53(C-21),49.60(C-22),208.5(C-23),46.68(C-24),34.62(C-25),179.98(C-26),16.92(C-27) ,19.72(C-28),27.26(C-29),20.75(C-30)。将化合物的波谱数据与文献[5,6]对照,完全一致,确定为灵芝酸A.

2.2.3 化合物3 白色针状结晶,mp294~295℃,分子式:C27H38O6.Liebermann-Burchard 反应阳性。EI-MS m/z:458[M] + , 相对分子质量458.1H-NMR (CDCl3 , 300 MHz) δ: 0.95, 1.06,1.08,1.21,1.30 (各3H ,s) ,0.93 (3H ,d ,J= 8.4 Hz) ,4.81 (1H ,t ,J= 7.8 Hz ,C7-H) .13C-NMR(CDCl3 ,75 MHz) δ:30.59(C-1),34.31(C-2),216.57(C-3),46.81(C-4),49.00(C-5),27.71(C-6),66.39

(C-7),157.88(C-8),141.33(C-9),38.32(C-10),197.68(C-11),50.28(C-12),45.01(C-13),59.38(C-14),217.90(C-15),41.11(C-16),46.39(C-17),17.73(C-18),18.18(C-19),35.20(C-20),18.04(C-21),30.50(C-22),35.71(C-23),177.52(C-24),27.03(C-25),20.81(C-26),24.70(C-27)。将化合物3的波谱数据与文献[7,8]对照,完全一致,确定为赤芝酸A.

2.2.4 化合物4白色针晶,mp182~183℃,分子式C30H48O3.Liebermann-Burchard 反应阳性,EI-MS m/z:456[M] +,相对分子质量456.1H-NMR (CDCl3, 300 MHz ) δ: 5.40 (1H, d, C7-H) , 3.30(1H,dd,活泼氢质子),1.22(3H,s, C27-CH3),1.13(3H, s, C26-CH3),1.09(3H, s, C29-CH3),0.59((3H, s, C18-CH3),0.91(3H, d,C21-CH3) .13C-NMR(CDCl3,75 MHz)δ:35.55(C-1),34.87(C-2),216.80(C-3),47.49(C-4),50.74(C-5),23.69(C-6),119.95(C-7),142.88(C-8),144.54(C-9),37.22(C-10),117.27(C-11),37.85(C-12),43.78(C-13),50.32(C-14),31.48(C-15),27.88(C-16),50.99(C-17),15.74(C-18),22.07(C-19),36.64(C-20),18.65(C-21),33.49(C-22),28.74(C-23),79.61(C-24),73.24(C-25),23.23(C-26),26.59(C-27) ,25.46(C-28),25.37(C-29),22.48(C-30)。将化合物4的波谱数据与文献[9,10]对照,确定为灵芝萜酮二醇。

2.2.5 化合物5浅黄色针状结晶,mp105~106℃,分子式C30H40O7. ESI-MS m/z:513[M+H]+,相对分子质量512.1H-NMR (CDCl3, 500 MHz) δ 4.85 (1H, m, C3-H) , 1.28,1.14,1.12,0.99, 0.89,0.59(各3H,s)。13C-NMR(CDCl3, 125 MHz)δ:37.20(C-1),34.23(C-2),215.44(C-3),46.95(C-4),50.85(C-5),33.76(C-6),199.44(C-7),149.79(C-8),146.83(C-9),39.29(C-10),199.42(C-11),48.80(C-12),43.86(C-13),57.14(C-14),206.99(C-15),39.71(C-16),44.3(C-17),16.00(C-18),19.71(C-19),31.99(C-20),18.54(C-21),48.87(C-22), 207.63 (C-23), 46.50 (C-24),34.43(C-25),180.38(C-26),16.84(C-27) ,20.90(C-28),27.53(C-29),20.24(C-30)。将化合物5的波谱数据与文献 [11~13]对照,确定为 3,7,l1,15,23一五氧化-5α-羊毛甾-8烯-26-烷酸。

2.2.6 化合物6白色粉末,mp113~115℃,分子式C42H86O2.Liebermann-Burchard 反应阳性ESI-MS m/z :623[M+H ]+ ,相对分子质量622. 1H-NMR (CDCl3 ,300 MHz,) δ: 5.13~5.22 (3H,m, C7, C22, C23-H) , 4.71 (1H,t, J=6.0 Hz, C3-H) , 2.30 (2H, t, J= 7.6 Hz, C2′-H) ,1.25~1.46 (长链饱和亚甲基) , 1.03 (3H, d, J= 6.4 Hz,C21-H) , 0.91 ( 3H, d, J= 6.18 Hz,C28-H) , 0.88(3H, t, J= 6.4Hz, 末端甲基) , 0.85 (3H, s, C19-H) ,0.81 ( 6H, m , C26和 C27-H ) , 0.54 ( 3H, s, C18-H )。13C-NMR (CDCl3,75MHz):36.75(C-1),27.72(C-2),73.19(C-3),33.92(C-4),40.15(C-5)29.72(C-6),117.37(C-7),139.55(C-8),49.37(C-9),34.29(C-10),21.53(C-11),39.46(C-12),43.33(C-13),55.12(C-14),22.95(C-15),28.10(C-16),55.82(C-17),12.13(C-18),12.96(C-19),40.47(C-20),19.67(C-21),131.96(C-22),135.61(C-23),42.87(C-24),33.14(C-25),19.96(C-26),21.10(C-27),17.62(C-28),14.11(末端甲基)29.1-29(饱和亚甲基),173.32(C=O)。化合物6与文献[14]数据相一致,确定为麦角甾-7, 22-二烯-3β-醇十五烷酸酯。

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