Skip to main content
. Author manuscript; available in PMC: 2021 Aug 28.
Published in final edited form as: J Nat Prod. 2020 Aug 10;83(8):2490–2500. doi: 10.1021/acs.jnatprod.0c00492

Table 1.

NMR Spectroscopic Data for 5 and 8 in CDCl3 (500 MHz for 1H and 125 MHz for 13C, δ in ppm)

5 8
position δC, type δH (J, Hz) δC, type δH (J, Hz)
1 135.2, C 52.8, C
1a 127.9, C 141.4, C
2 151.9, C 39.5, CH2 2.91, s
3 171.7, C 199.9, C
3a 106.8, C 104.3, C
3b 124.5 or 125.4, C 129.2, C
4 180.1, C 165.0, C
5 102.2, CH 6.56, s 100.4, CH 6.73, s
6 167.3 or 167.7, C 164.6, C
6a 118.0, C 115.8, C
7 167.3 or 167.7, C 165.6, C
7a 117.6, C 112.4, C
8 101.8, CH 6.57, s 99.4, CH 6.76, s
9 179.7, C 169.9, C
9a 107.1, C 107.0, C
9b 124.5 or 125.4, C 124.7, C
10 171.8, C 181.4, C
11 149.2, C 149.6, C
12 131.3, C 138.6, C
12a 128.3, C 122.5, C
13 42.6, CH2 Ha 2.34, dd (13.8, 2.0) 52.9, CH2 Ha 1.97, d (13.2)
Hb 3.67, d (13.8) Hb 2.61, d (13.2)
14 78.7, C 79.2, C
15 64.3, CH 3.72, s 59.4, CH 3.86, s
16 24.9, CH3 1.78, s 32.3, CH3 1.77, s
17 206.8, C 84.1, C
18 28.6, CH3 1.83, s 21.7, CH3 1.18, s
CH3O-2 62.0 4.18, s --
CH3O-6 56.6 or 56.7 4.07, s 56.4 4.05, s
CH3O-7 56.6 or 56.7 4.07, s 56.4 4.09, s
CH3O-11 61.1 4.27, s 61.2 4.05, s
HO-3 15.97, s
HO-4 13.57, s
HO-9 15.23, s
HO-10 16.07, s
HO-14 3.80, d (2.0)