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Table 1 13C and 1H NMR spectroscopic data for compounds 1 and 2 in CDCl3

From: Bioassay-guided isolation and identification of gametocytocidal compounds from Artemisia afra (Asteraceae)

Position Compound 1 Compound 2
δC δH (J in Hz) δC δH (J in Hz)
1 85.4 76.5
2 134.4 5.62 (1H, d, 5.6) 58.5 3.67 (1H, brsb)
3 140.6 6.00 (1H, d, 5.6) 57.0 3.27 (1H, brsb)
4 82.3 70.0
5 66.3 2.51 (1H, d, 11.4) 44.6 2.85 (1H, d, 10.8)
6 78.1 4.16 (1H, dd, 8.5, 11.4) 76.5 4.24 (1H, t, 10.0)
7 45.0 3.63–3.70 (1H, m) 48.9 3.67–3.77 (1H, m)
8 74.5 4.86–4.93 (1H, m) 71.5a 5.25 (1H, m)
9 36.4 2.90 (1H, dd, 6.0, 12.0)
2.73 (1H, dd, 10.5, 12.0)
44.0 2.41 (1H, dd, 7.1, 16.5)
1.77 (1H, dd, 1.7, 16.5)
10 143.0 71.2a
11 135.5 137.4
12 169.7a 169.3
13 125.3 6.32 (1H, d, 3.4)
5.86 (1H, d, 3.4)
121.5 6.21 (1H, d, 3.1)
5.56 (1H, d, 3.1)
14 117.4 5.13 (1H, brs)
4.86 (1H, brs)
26.6 1.10 (3H, s)
15 24.2 1.32 (3H, s) 20.2 1.56 (3H, s)
–OAc (CH3) 21.1 2.14 (3H, s) 21.3 2.13 (3H, s)
–OAc (–C=O) 169.9a 170.0
  1. aSignals can be interchanged
  2. bSignals appear as broad singlets due to poor resolution