Table 1.

¹H-NMR Chemical Shifts for Compounds 1–4 (in CDCl₃, 600MHz)

position	1	2	3	4
1	1.40 m, 1.91 m	0.90 m, 1.68 m	0.89 m, 1.65 m	0.90 m, 1.65 m
2	2.40 ddd (4.4, 7.2, 15.9)	1.53 m, 1.65 m	1.55 m, 1.61 m	1.60 m, 1.60 m
	2.50 ddd (7.2, 8.8, 15.9)
3	-	3.19 dd (4.8, 11.2)	3.19 dd (4.2, 11.4)	3.62 dd (6.4, 9.6)
5	1.33 m	0.69 d (11.4)	0.68 d (10.2)	0.81m
6	1.38 m, 1.50 m	1.40 m, 1.53 m	1.37 m, 1.51 m	1.30 m, 1.30 m
7	1.46 m, 1.46 m	1.39 m, 1.39m	1.35 m, 1.40 m	1.35 m, 1.40 m
9	1.39 m	1.27 m	1.28 m	1.24 m
11	1.30 m, 1.57 m	1.24 m, 1.45 m	1.26 m, 1.43 m	1.18 m, 1.40 m
12	1.12 m, 1.72 m	1.56 m, 1.61 m	1.07 m, 1.07 m	1.08 m, 1.41 m
13	1.88 m	1.76 dd (4.1, 12.2)	1.91 m	1.66 m
15	1.14 m, 1.79 m	1.11 m, 1.78 m	1.24 m, 1.38 m	0.98 m, 1.60 m
16	1.55 m, 1.76 m	1.61 m, 1.71 m	1.53 m, 2.10 m	1.35 m, 1.48 m
18	1.49 m	1.96 t (11.3)	2.20 m	1.45 m
19	2.61dt (6.2, 10.8)	2.84 dt (5.6, 10.8)	3.15 dt (5.6, 11.4)	2.26 m
21	1.41 m, 2.07 m	1.49 m, 2.23 m	1.53 m, 1.96 m	1.33 m, 2.05 m
22	1.50 m, 1.61 m	1.58 m, 1.66 m	1.42 m, 1.79 m	1.22 m, 1.37 m
23	1.08 s	0.97 s	0.96 s	3.42 (d, 10.4)
				3.71 (d, 10.4)
24	1.03 s	0.76 s	0.75 s	0.87 s
25	0.94 s	0.83 s	0.81 s	0.87 s
26	1.08 s	1.02 s	0.89 s	1.03 s
27	0.96 s	0.96 s	1.00 s	0.94 s
28			9.56 d (1.8)	0.78 s
29	4.61 s	2.18 s	2.19 s	4.90 s
	4.73 s			4.94 s
30	1.68 s			4.08 (d, 14.4)
				4.11 (d, 14.4)