Table 1.

¹H NMR data for compounds 1–4 in pyridine-d₅ at 500 MHz (δ in ppm, J in Hz)

No.	1	2	3	4
1a	1.92 (overlap)	2.00 (overlap)	2.40 (overlap)	1.86 (m)
1b	1.79 (overlap)	1.78 (overlap)	1.59 (overlap)	1.64 (overlap)
2a	2.79 (overlap)	2.65 (m)	2.62 (overlap)	1.97 (overlap)
2b	2.49 (m)	2.42 (m)	2.42 (overlap)	1.97 (overlap)
3				3.49 (m)
5	1.86 (overlap)	1.54 (overlap)	2.61 (overlap)	0.97 (dd, 12.1, 2.0)
6a	1.53 (m)	2.06 (overlap)	1.61 (overlap)	1.75 (overlap)
6b	1.44 (m)	1.56 (overlap)	1.33 (overlap)	1.51 (m)
7a	1.79 (overlap)	2.77 (overlap)	1.97 (dd, 12.2, 4.0)	1.75 (overlap)
7b	1.04 (overlap)	1.80 (overlap)	1.57 (overlap)	1.39 (overlap)
8	2.26 (br d, 12.9)		1.52 (dd, 12.7, 3.4)	2.48(m)
11	5.29 (s)	5.94 (s)	5.14 (s)	5.56 (s)
12	2.98 (s)			2.61 (br s)
15a	1.67 (overlap)	4.33 (s)	1.61 (overlap)	1.77 (overlap)
15b	1.67 (overlap)		1.21 (overlap)	1.43 (overlap)
16a	2.10 (overlap)	4.70 (s)	1.80 (overlap)	1.77 (overlap)
16b	1.57 (overlap)		1.80 (overlap)	1.77 (overlap)
17	2.03 (q, 5.8)		2.57 (br s)	1.64 (overlap)
18a	4.16 (2H, m)	2.09 (3H, s)	5.04 (d, 12.1)	1.35 (3H, s)
18b			4.75 (d, 12.1)
19	1.25 (3H, s)	1.48 (3H, s)	1.03 (3H, s)	1.20 (3H, s)
20	2.16 (overlap)	2.81 (overlap)	2.30 (br, s)	2.42 (br s)
21	1.16 (3H, d, 7.6)	0.92 (3H, d, 6.8)	1.11 (3H, d, 6.7)	1.19 (3H, d, 7.1)
22a	1.96 (overlap)	1.85 (overlap)	1.70 (m)	1.91 (overlap)
22b	1.24 (overlap)	1.63 (br s)	1.32 (overlap)	1.31 (overlap)
23a	2.80 (overlap)	3.05 (dq, 15.6, 7.9)	2.81 (m)	2.87 (overlap)
23b	2.80 (overlap)	2.81 (overlap)	1.28 (overlap)	2.87 (overlap)
24	6.07 (t, 7.5)	6.15 (t, 6.9)	6.12 (t, 7.5)	6.13 (t, 7.4)
27	2.14 (3H, s)	2.17 (3H, s)	2.12 (3H, s)	2.15 (3H, s)
28	1.15 (3H, s)	1.73 (3H, s)	1.37 (3H, s)	1.10 (3H, s)
29	1.39 (3H, s)	1.15 (3H, s)	1.20 (3H, s)	1.26 (3H, s)
30	1.06 (3H, s)	1.06 (3H, s)	1.03 (3H, s)	1.12 (3H, s)