C 17 18 19 20 22 23
1 33.94 33.94 36.21 33.89 33.88 33.90
2 27.02 27.01 30.99 27.29 26.99 26.97
3 73.76 73.72 71.05 73.75 73.66 73.68
4 32.31 32.31 34.21 32.25 32.26 32.26
5 42.40 42.41 42.46 42.34 42.33 42.36
6 26.71 26.69 26.67 26.99 27.75 26.67
7 26.34 26.35 26.51 26.99 26.71 26.29
8 36.40 36.49 36.97 36.28 36.17 35.49
9 50.21 50.14 49.83 50.07 50.02 50.06
10 34.14 34.14 33.99 34.07 34.05 34.08
11 203.99 204.01 211.80 203.88 203.54 203.81
12 85.89 85.90 84.12 85.31 85.11 85.46
13 50.10 50.05 52.45 50.34 50.48 50.07
14 55.90 55.40 55.89 53.17 54.10 53.65
15 24.97 24.50 24.60 26.28 26.27 25.99
16 23.17 23.25 23.30 26.70 23.18 23.24
17 53.97 54.01 52.45 54.01 53.09 54.23
18 9.76 10.03 8.83 9.33 9.09 9.53
19 23.14 23.14 23.23 23.18 23.15 23.14
20 32.52 38.65 38.08 37.97 37.01 36.56
21 20.48 22.24 22.22 14.71 14.46 15.58
22 29.32 142.79 143.46 74.00 74.17 77.93
23 31.98 113.36 112.84 63.50 62.56 66.53
24 179.27 - - - - -
CH3CO 20.77 20.80 - 20.93 20.90 20.81
CH3CO 170.64 170.50 - 170.69 170.94 170.51
CH3CO 21.41 21.34 - 21.43 21.40 21.37
CH3CO 170.23 170.18 - 170.29 170.46 170.12
CH3CO - - - - 20.86 -
CH3CO - - - - 169.94 -
CH3CO - - - - 21.25 -
CH3CO - - - - 170.46 -
OCCH3 - - - - - 26.39
OCCH3 - - - - - 25.33
O2C(CH3)2 - - - - - 108.30
Table 1: δ 13C NMR (CDCl3, 50.3 MHz) for compounds 17-20 and 22-23.