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Table 1 1H and 13C NMR data for (3β)-hopan-3-ol-28,22-olide (1) in CDCl3

From: Anti-cholinesterases and memory improving effects of Vietnamese Xylia xylocarpa

Position (3β)-Hopan-3-ol-28,22-olide (1)
δ C, type δ H (J in Hz)
1a 39.1, CH2 1.62, m
1b   1.72, m
2 27.6, CH2 1.61, m
3 79.1, CH 3.19, dd (11.4, 4.8)
4 41.0, C
5 55.6, CH 0.69, m
6 18.5, CH2 1.56, m
7 34.2, CH2 1.39, m
8 41.8, C
9 50.9, CH 1.38, m
10 37.4, C
11 20.6, CH2 1.51, m
12 27.0, CH2 1.62, m
13 37.1, CH 1.79, m
14 41.8, C
15a 33.8, CH2 1.82, m
15b   1.59, m
16a 26.5, CH2 2.00, m
16b   1.61, m
17 48.3, CH 1.62, m
18 48.7, C
19a 29.1, CH2 2.41, dt (13.3, 3.5)
19b   1.25–1.30, m
20 29.1, CH2 1.25, m
21 42.6, CH 2.13, t (4.4)
22 83.4, C
23 28.2, CH3 0.96, s
24 15.9, CH3 0.76, s
25 16.4, CH3 0.83, s
26 15.5, CH3 0.93, s
27 14.2, CH3 0.94, s
28 175.9, C
29 30.3, CH3 1.46, s
30 30.4, CH3 1.32, s