結(jié)構(gòu)解析練習(xí)

化合物31H-NMR-1化合物31H-NMR-2化合物313C-NMR化合物3分子式為C11H12O4

氫譜與碳譜給出一組αβ不飽和羰基信號(hào)[δH7.75(1H,d,15.9Hz),7.25(1H,d,15.9Hz);δc188.1,142.8,123.1]，一組1，3，4-三取代苯基信號(hào)[δH7.47(1H,brs),7.30(1H,brd,8.1Hz),6.94(1H,d,8.1Hz)]及兩個(gè)甲氧基信號(hào)[δH3.27(3H,s),3.95(3H,s);δc69.8,55.8]，碳譜上給出148.0,149.5兩個(gè)信號(hào)，提示苯基上存有鄰二氧取代，鑒定為阿魏酸甲酯。

13C-NMR(DMSO):δ142.8(C-1),123.1(C-2),188.1(C-3),126.4(C-1’),111.5(C-2’),148.0(C-3’),149.5(C-4’),115.7(C-5’),123.4(C-6’),55.8(-OCH3),69.8(C=O-OCH3)。1H-NMR:δ7.75[(1H,d,15.9Hz),H-1],7.25[(1H,d,15.9Hz),H-2],7.47[(1H,brs),H-2’],6.94[(1H,d,8.1Hz),H-5’],7.30[(1H,brd,8.1Hz),H-6’],3.95[(3H,s),-OCH3],3.27[(3H,s),C=O-OCH3]?；衔?1H-NMR化合物413C-NMR-1化合物413C-NMR-2化合物4分子式為C9H8O4

碳譜和氫譜給出一組αβ不飽和羰基信號(hào)[δH7.49(1H,d,15.9Hz),6.29(1H,d,15.9Hz);δc168.1,144.2,115.5]，一組1，4-二取代苯基信號(hào)[δH7.51(2H,d,8.4Hz),6.79(2H,d,8.4Hz)]，碳譜上顯示159.7的碳信號(hào)，提示苯基上有氧取代，鑒定為4-羥基苯丙烯酸。

13C-NMR(DMSO):δ144.2(C-1),115.5(C-2),168.3(C-3),125.3(C-1’),130.1(C-2’,6’),115.8(C-3’,5’),159.7(C-4’)。1H-NMR:δ7.49[(1H,d,15.9Hz),H-1],6.29[(1H,d,15.9Hz),H-2],7.51[(2H,d,8.4Hz),H-2’,6’],6.79[(2H,d,8.4Hz),H-3’,5’]?；衔?1H-NMR-1化合物51H-NMR-2化合物513C-NMR-1化合物513C-NMR-2化合物5分子式為C11H12O413C-NMR(DMSO):δ145.1(C-1),114.3(C-2),167.2(C-3),125.6(C-1’),111.4(C-2’),148.0(C-3’),149.4(C-4’),115.6(C-5’),123.2(C-6’),55.8(3’-OCH3),51.3(4’-OCH3)。1H-NMR:δ7.56[(1H,d,15.9Hz),H-1],6.48[(1H,d,15.9Hz),H-2],7.32[(1H,d,1.7Hz),H-2’],6.79[(1H,d,8.1Hz),H-5’],7.13[(1H,dd,1.7,8.1Hz),H-6’],3.81[(3H,s),OCH3],3.70[(3H,s),OCH3]?；衔?1H-NMR化合物713C-NMR化合物7分子式為C9H8O2

氫譜與碳譜給出一組αβ不飽和醛信號(hào)[δH7.63(1H,d,15.6Hz),7.06(1H,d,15.6Hz);δc188.1,142.6,122.6]，一組1，4-二取代苯基信號(hào)[δH7.59(2H,d,8.4Hz),6.81(2H,d,8.4Hz)]，碳譜上顯示160.7的碳信號(hào)，提示苯基上有氧取代，鑒定為4-羥基苯丙烯醛。

13C-NMR(DMSO):δ142.6(C-1),122.6(C-2),188.1(C-3),125.6(C-1’),130.6(C-2’,6’),116.2(C-3’,5’),160.7(C-4’)。1H-NMR:δ7.63[(1H,d,15.6Hz),H-1],7.06[(1H,d,15.6Hz),H-2],7.59[(2H,d,8.4Hz),H-2’,6’],6.81[(2H,d,8.4Hz),H-3’,5’]。化合物81H-NMR-1化合物81H-NMR-2化合物813C-NMR化合物8分子式為C8H8O3碳譜和氫譜給出一個(gè)醛氫信號(hào)[δH9.77(1H,s);δc191.2]，一組1，3，4-三取代苯基信號(hào)[δH7.42(1H,d,1.7Hz),7.39(1H,dd,1.7,8.0Hz),6.96(1H,d,8.0Hz)]及一個(gè)甲氧基信號(hào)(δH3.80;δc55.6)，碳譜上給出148.3,153.1兩個(gè)信號(hào)，提示苯基上存有鄰二氧取代，鑒定為香蘭素。

13C-NMR(DMSO):δ191.2(C-1),128.8(C-1’),110.7(C-2’),148.3(C-3’),153.1(C-4’),115.5(C-5’),126.2(C-6’),55.6(-OCH3)。1H-NMR:δ9.77[(1H,s),H-1],7.42[(1H,d,1.7Hz),H-2’],6.96[(1H,d,8.0Hz),H-5’],7.39[(1H,dd,1.7,8.0Hz),H-6’]。化合物91H-NMR-1化合物91H-NMR-2化合物913C-NMR化合物9分子式為C7H6O2碳譜和氫譜給出一個(gè)醛氫信號(hào)[δH9.78(1H,s);δc191.1],一組1，4-二取代苯基信號(hào)[δH7.74(2H,d,8.4Hz),6.92(2H,d,8.4Hz)]，碳譜上顯示163.7的碳信號(hào)，提示苯基上有氧取代，鑒定為4-羥基苯甲醛。

13C-NMR(DMSO):δ191.1(C-1),128.5(C-1’),132.3(C-2’,6’),116.1(C-3’,5’),163.7(C-4’)。1H-NMR:δ9.78[(1H,s),H-1],7.74[(2H,d,8.4Hz),H-2’,6’],6.92[(2H,d,8.4Hz),H-3’,5’]?；衔?1H-NMR-1化合物11H-NMR-2化合物113C-NMR化合物1分子式為C11H12O3

其氫譜與碳譜給出一組αβ不飽和羰基信號(hào)[δH7.53(1H,d,16.3Hz),6.67(1H,d,16.3Hz);δc197.9,144.1,123.4]，一組1，3，4-三取代苯基信號(hào)[δH7.30(1H,d,1.8Hz),7.13(1H,dd,1.8,8.2Hz),6.81(1H,d,8.1Hz)]，一個(gè)甲氧基信號(hào)[δH3.82(3H,s),δc55.8]及一個(gè)甲基信號(hào)[δH2.29(3H,s),δc27.3]，碳譜上給出148.1,149.6兩個(gè)信號(hào)，提示苯基上存有鄰二氧取代，鑒定為甲酰阿魏酸。

13C-NMR(DMSO):δ144.1(C-1),123.4(C-2),197.9(C-3),27.3(C-4),125.9(C-1’),111.4(C-2’),148.1(C-3’),149.6(C-4’),115.7(C-5’),124.4(C-6’),55.8(-OCH3)。1H-NMR:δ7.53[(1H,d,16.3Hz),H-1],6.67[(1H,d,16.3Hz),H-2],2.29[(3H,s),H-4],7.30[(1H