Table 1.

¹H-NMR data for compounds 1 and 2.

Position	Compound 1	Compound 2
1α	1.56–1.62 (m)	1.52–1.60 (m)
1β	2.41–2.47 (m)	2.40–2.46 (m)
2	1.70–1.79 (m)	1.70–1.79 (m)
3α	3.31 (dd, J = 6.4, 9.6)	3.31 (dd, J = 6.4, 9.6)
5	1.65–1.68 (m)	1.62–1.68 (m)
6	2.40–2.47 (m)	2.40–2.48 (m)
11	4.70 (t, J = 8.2)	4.69 (t, J = 8.2)
12α	1.76–1.81 (m)	1.74–1.81 (m)
12β	2.38–2.46 (m)	2.35–2.43 (m)
15α	2.10–2.12 (m)	2.12–2.19 (m)
15β	1.42–1.46 (m)	1.40–1.46 (m)
16α	1.93–1.99 (m)	1.90–1.94 (m)
16β	1.28–1.33 (m)	1.28–1.32 (m)
17	1.54–1.61 (m)	1.55–1.60 (m)
18	0.71 (s)	0.73 (s)
19	1.28 (s)	1.27 (s)
20	1.40–1.47 (m)	1.40–1.46 (m)
21	0.94 (d, J = 6.6)	0.88 (d, J = 6.4)
22	1.03–1.12 (m)	1.08–1.13 (m) 1.56–1.62 (m)
23	1.83–1.91 (m) 2.01–2.08 (m)	1.84–1.90 (m) 1.98–2.02 (m)
24	5.09(t, J = 7.2)	5.09 (t, J = 7.2)
26	1.70 (s)	1.70 (s)
27	1.62 (s)	1.63 (s)
28	1.00 (s)	1.01 (s)
29	0.92 (s)	0.93 (s)
30	1.15 (s)	1.16 (s)

Record in CDCl₃, 400 MHz for ¹H, δ in ppm, J = Hz.