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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: Bioorg Med Chem. 2013 Apr 16;21(13):10.1016/j.bmc.2013.04.017. doi: 10.1016/j.bmc.2013.04.017

Table 2.

13C NMR data of flavonolignans and 7-O-methylated analogues in DMSO-d6 (125 MHz, 30 °C)

Position Type 1 2 3 4 5 6 7 8 9 10 11 12 13 14
2 CH 82.6 82.7 82.5 82.7 82.5 82.7 82. 5 82.7 83.3 83.4 79.9 80.0 81.7 81.8
3 CH 71.4 71.5 71.4 71.5 71.5 71.6 71.5 71.6 71.7 71.8 71.5 71.7 70.8 71.0
4 C 197.8 198.5 197.7 198.5 197.8 198.4 197.8 198.4 197.8 198.4 198.2 198.7 196.5 197.6
4a C 100.4 101.4 100.4 101.4 100.5 101.4 100.5 101.4 100.5 101.4 100.6 101.5 100.3 101.2
5 C 163.3 163.0 163.3 163.0 163.3 163.0 163.3 163.0 163.3 163.0 163.4 163.1 163.4 163.0
6 CH 96.1 95.0 96.1 94.9 96.1 95.0 96.1 95.0 96.0 94.9 96.1 95.0 96.2 95.2
7 C 167.1 167.6 166.9 167.6 166.9 167.6 166.9 167.6 166.8 167.5 166.8 167.6 166.9 167.6
8 CH 95.1 93.9 95.0 93.9 95.1 93.9 95.1 93.9 95.0 93.8 95.1 93.9 95.0 93.8
8a C 162.5 162.4 162.4 162.4 162.5 162.4 162.5 162.4 162.6 162.5 162.6 162.5 162.0 162.0
1′ C 130.1 129.9 130.1 130.0 130.3 130.2 130.3 130.2 130.0 129.8 124.5 124.4 139.5 139.4
2′ CH 116.6 116.7 116.6 116.7 116.5 116.6 116.5 116.5 115.6 115.7 128.9 128.9 48.6 48.7
3′ C 143.3 143.3 143.2 143.2 142.9 142.9 142.9 142.9 146.4 146.4 141.6 141.6 96.7 96.7
4′ C 143.7 143.7 143.6 143.7 143.9 143.9 143.9 143.9 140.7 140.7 145.9 145.8 201.9 201.9
5′ CH 116.3 116.4 116.3 116.4 116.4 116.5 116.5 116.4 129.1 129.1 116.1 116.1 53.4 53.3
6′ CH 121.4 121.5 121.1 121.2 120.9 121.0 120.9 121.0 115.4 115.4 119.5 119.4 124.0 124.0
1″ C 127.5 127.5 127.5 127.5 127.5 127.5 127.5 127.5 132.4 132.4 132.8 132.8 133.0 133.0
2″ CH 111.6 111.6 111.6 111.6 111.7 111.7 111.7 111.7 110.4 110.9 110.2 110.3 112.4 112.4
3″ C 147.6 147.6 147.6 147.6 147.6 147.6 147.6 147.6 147.5 148.1 147.5 147.5 147.1 147.2
4″ C 147.0 147.0 147.0 147.0 147.0 147.0 147.0 147.0 147.1 147.7 146.3 146.3 145.1 145.1
5″ CH 115.3 115.3 115.3 115.3 115.3 115.3 115.3 115.3 115.3 115.3 115.1 115.1 114.9 115.0
6″ CH 120.5 120.6 120.5 120.5 120.5 120.5 120.5 120.4 118.7 118.7 118.5 118.6 120.3 120.3
7″ CH 75.9 75.9 75.8 75.9 75.9 75.9 75.9 75.9 87.0 87.5 86.4 86.4 46.0 46.0
8″ CH 78.1 78.1 78.1 78.1 78.0 78.0 78.0 78.0 53.4 53.9 52.0 51.9 44.0 44.0
9″ CH2 60.2 60.2 60.2 60.2 60.2 60.2 60.2 60.2 63.0 63.5 63.5 63.5 72.8 72.8
3″-OCH3 CH3 55.7 55.7 55.7 55.7 55.7 55.7 55.7 55.7 55.6 55.6 55.6 55.6 55.4 55.4
7-OCH3 CH3 — 56.0 — 56.0 — 56.0 — 56.0 — 55.9 — 56.0 — 56.0

Chemical shifts in δ. In compounds 9 and 10, position 5′ is quaternary; in compounds 11 and 12, position 2′ is quaternary.