Table 3.

¹H NMR Data of 9–12 at 500 MHz

No.	9a	10a	11b	12b
	(mult., J in Hz)	(mult., J in Hz)	δH (mult, J in Hz)	δH (mult, J in Hz)
1	1.91, ddd (8.7, 6.4, 4.7)	1.59, ddd (8.1, 5.8, 4.0)	2.18, dt (8.6, 4.9)	2.18, dt (8.6, 4.9)
2α	0.93, ddd (8.7, 5.7, 5.7)	0.58, m	1.17, m	1.18, m
2β	1.12, m	0.80, ddd (8.7, 8.1, 5.1)	0.62, m	0.62, m
3	1.82, ddd (8.5, 6.4, 3.8)	2.13, ddd (8.7, 5.8, 3.4)	1.96, ddd (2, 5.5, 3.1)	1.97, ddd (8.2, 5.4, 3.1)
5		2.20, m
6		2.86, m
9	3.78, s	3.97, s	3.94, s	3.99, s
13	1.56, s	1.84, s	1.35, s	1.38, s
14	0.77, s	1.07, s	1.16, s	1.16, s
15	3.22, dd (14.0, 6.9) 1.73, dd (14.0, 10.6)	5.82, s	2.30, dd (18.0, 7.1) 2.96, dd (18.0, 9.5)	2.29, dd (18.0, 7.2) 2.95, dd (18.0, 9.5)
1′	1.73, m	1.93, m	1.66, m	1.65, m
2′α	0.64, ddd (8.9, 5.3, 5.3)	0.63, m	0.64, m	0.64, m
2′β	1.22, m	1.20, m	1.20, m	1.20, m
3′	1.73, m	1.38, ddd (8.9, 7.3, 3.5)	1.66, m	1.66, m
5′	2.36, dd (12.7, 6.8)	2.49, dd (13.5, 5.6)	1.65, m	1.58, dd (14.6, 2.9)
6′α	2.46, dd (17.9, 6.8)	2.37, dd (18.7, 5.6)	2.45, d (13.0)	2.54, dd (14.6, 14.1)
6′β	2.91, dd (17.9, 12.7)	2.87, dd (18.7, 13.5)	1.69, m	1.73, dd (14.1, 2.9)
9′	2.71, dd (10.6, 6.8)	2.21, m	2.64, dd (9.5 7.1)	2.64, dd (9.5 7.2)
13′	4.87, d (13.3) 4.84, dd (13.3, 1.4)	4.37, d (13.2) 4.31, dd (13.2, 1.3)	5.52, brs 6.20, brs	5.51, brs 6.19, brs
14′	1.02, s	0.91, s	0.94, s	0.94, s
15′	4.04, d (11.0) 4.01, d (11.0)	4.41, d (11.2) 3.90, d (11.2)	4.23, d (11.1) 4.18, d (11.1)	4.30, d (11.1) 4.08, d (11.1)
2″	6.07, m	5.99, q (1.5)	6.86, m	5.91, q (1.5)
4″	4.10, m	4.08, m	1.81, brs	4.62, m
5″	2.12, d (1.3)	2.07, (br s)	1.82, brs	2.13, d (1.5)
7″	2.57, m			2.68, m
8″	2.67, m			2.75, m
12-OMe			3.44, s	3.43, s
6″-OMe	3.69, s
9″-OMe				3.69, s

^aData were measured in CD₃OD and

^bdata were measured in CDCl_3.