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Table 2 13C NMR (125 MHz, CDCl3), δC in ppm

From: Isolation and characterization of three new anti-proliferative Sesquiterpenes from Polygonum barbatum and their mechanism via apoptotic pathway

  Compound 1 Compound 2 Compound 3
Carbon No 13C–NMR (δC ppm) 13C–NMR (δC ppm) 13C–NMR (δC ppm)
1 123.9 123.2 125.3
2 138.1 140.4 140.7
3 132.3 130.7 122.6
4 140.1 138.8 134.7
5 139.6 137.7 138.4
6 119.7 120.1 120.1
7 133.4 125.4 128.1
8 129.7 144.7 146.7
9 158.5 160.1 159.6
10 143.2 141.4 142.1
11 32.9 32.4 32.1
12 27.6 28.3 25.4
13 27.6 28.3 25.4
14 179.8 180.7 175.1
15 62.4 174.1 172.6
16 23.4 22.7
9-OCH3 58.7 60.4 59.6
14-OCH3 57.6