Table 1.

¹H NMR Data for Compounds 1–7 (δ in ppm, J in Hz).

No.	1 a	2 a	3 a	4 b	5 b	6 a	7 a
1	3.98, dd (9.6, 2.3)	3.98, dd (9.7, 2.0)	5.42, dd (11.0, 1.8)	3.87, t (7.0)	3.79, dd (7.0, 5.2)	4.96, d (7.3)	7.08, d (10.2)
2	2.46, dd (15.7, 9.6) 2.68, m	2.39, m 2.63, dd (15.7, 2.0)	2.43, dd (14.8, 3.9) 2.88, dd (14.8, 1.8)	2.84, m 3.33, m	2.79, dd (16.0, 7.0) 3.32, d (16.0)	3.10, dd (16.2, 7.3) 3.55, d (16.2)	5.87, d (10.2)
5	2.13, d (2.3)	2.12, d (2.5)	2.49, d (3.0)	2.21, dd (12.1, 2.4)	2.38, d (2.3)	2.49, d (2.6)	1.98, d (1.8)
6	5.48, dd (4.5, 2.3)	5.48, m	5.27, m	1.67, m 1.92, m	5.52, dd (6.3, 3.0)	5.64, m	5.60, m
7	2.11, m 2.35, m	2.11, m 2.35, m	2.04, m 2.30, dd (14.4, 2.9)	1.72, m 2.06, m	1.92, dd, (14.6, 6.3) 2.26, dd, (14.6, 3.0)	2.05, m 2.40, dd (14.7, 3.0)	1.91, dd (14.7, 3.0) 2.42, m
9	1.97, dd (12.6, 5.2)	1.98, dd (11.3, 6.4)	1.90, dd (12.7, 4.6)	2.32, dd (12.5, 4.6)	2.34, m	2.15, m	1.81, dd (12.9, 4.3)
11	2.33, m 2.41, m	2.40, m 2.41, m	2.40, m 2.80, dd (17.4, 4.6)	2.08, m 2.43, dd (16.2, 4.6)	2.09, m 2.35, m	2.29, m 2.30, m	2.42, dd (16.5, 12.9) 2.76, dd (16.5, 4.3)
15	5.91, d (1.0)	5.92, d (1.1)	5.91, d (1.1)	5.81, d (1.1)	5.72, d (0.6)	5.91, d (1.1)	5.70, d (1.1)
17	2.20, d (1.0)	2.21, d (1.1)	2.21, d (1.1)	2.15, d (1.1)	2.05, d (0.6)	2.20, d (1.1)	2.18, d (1.1)
18	1.43, s	1.43, s	1.42, s	1.30, s	1.32, s	1.41, s	1.40, s
19	1.31, s	1.32, s	1.33, s	1.14, s	1.35, s	1.53, s	1.46, s
20	1.26, s	1.26, s	5.05, m 5.08, m	1.41, s	1.31, s	1.49, s	1.23, s
21	1.18, s	1.18, s	1.94, s	1.50, s	1.57, s	1.73, s	1.19, s
23	2.07, s	2.07, s	2.07, s		2.06, s	2.14, s	2.09, s
24	3.70, s		2.08, s
25						1.99, s

^a Recorded at 400 MHz in methanol-d₄; ^b recorded at 600 MHz in acetone-d₆.