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Table 1 1 H- and 13 C-NMR for compound 68; CD 3 OD soln.; δ in ppm, J in Hz

From: Acetyl and butyryl cholinesterase inhibitory sesquiterpene lactones from Amberboa ramosa

Position δ(H)a) δ(C)b) Multiplicity
1 2.80 ddd (9.0, 8.5, 8.0) 53.0 CH
2 2.35 dd (15.5, 5.0) 34.0 CH2
2.24 dd (9.0, 8.0)
3 5.40 brd s 126.8 CH
4 - 144.0 C
5 2.90 dd (9.0, 8.8) 55.0 CH
6 4.25 dd (10.0, 8.3) 82.3 CH
7 2.85 ddd (10.0, 9.5, 8.3) 52.3 CH
8 5.07 ddd (8.3, 6.0, 5.5) 75.4 CH
9 1.86 dd (12.3, 5.5) 42.8 CH2
2.38 dd (12.3, 6.0)
10 - 81.1 C
11 2.50 dq (11.0, 5.8) 42.1 CH
12 - 172.1 C
13 1.24 d (6.9) 15.7 CH3
14 1.27 s 26.1 CH3
15 1.79 s 17.7 CH3
16 - 181.0 C
17 2.05 s 21.3 CH3
18 3.63-3.65 m 73.86 CH
19 3.59 d 64.4 CH2
3.56 d
20 3.52 d 64.4 CH2
3.48 d
  1. a) Recorded at 400 MHz; b) Recorded at 100 MHz.