Table 2.

¹H and ¹³C NMR spectroscopic data for 5–7 (CDCl₃, TMS, δ ppm).

No.	5		6		7
	δ C	δH, J (Hz)	δ C	δH, J (Hz)	δ C	δH, J (Hz)
1	159.7		159.2		158.8
2	117.4		117.4		117.4
3	141.4	7.53 d (8.5)	141.2	7.52 d (8.6)	141.0	7.49 d (8.5)
4	107.3	6.64 d (8.5)	107.3	6.63 d (8.6)	107.1	6.61 d (8.5)
4a	158.4		158.4		158.8
5	82.7	4.81 d (6.9)	82.7	4.81 d (6.8)	76.1	4.05 d (6.7)
6	33.5	2.99 p (7.7)	33.3	2.98 p (7.4)	30.3	2.38 m
7	36.5	2.71 dd (17.3, 8.3)	36.5	2.71 dd (17.3, 8.3)	39.6	2.60 q (9.1)
		2.49 dd (17.3, 8.0)		2.48 dd (17.3, 7.9)		2.39 dd (9.1, 5.9)
8	174.7		174.7		173.0
8a	39.6	3.28 d (17.3) (17.3)	39.6	3.28 d (17.0) (17.0)	40.0	3.26 brs
		3.21 d		3.21 d
9	194.1		194.1		195.8
9a	107.1		107.1		107.5
10a	84.3		83.9		86.9
11	14.8	1.34 d (7.2)	14.8	1.34 d (7.2)	13.5	1.07 d (6.4)
12	169.1		169.1		170.4
13	53.6	3.78 s	53.6	3.77 s	53.1	3.76 s
14					51.6	3.70 s
1-OH		11.92 s		11.91 s		12.01 s
5-OH						2.76 d (7.2)
1′	159.7		159.2		159.2
2′	117.4		117.4		117.4
3′	141.4	7.53 d (8.5)	141.2	7.52 d (8.6)	141.4	7.52 d (8.6)
4′	107.3	6.64 d (8.5)	107.3	6.63 d (8.6)	107.1	6.62 d (8.6)
4a′	158.4		158.4		158.8
5′	82.7	4.81 d (6.9)	87.5	4.46 d (4.0)	87.4	4.46 d (3.9)
6′	33.5	2.99 p (7.7)	29.9	2.84 m	29.6	2.84 m
7′	36.5	2.71 dd (17.3, 8.3)	35.9	2.92 dd (17.8, 9.4)	35.8	2.92 dd (17.8, 9.3)
		2.49 dd (17.3, 8.0) 2.49 dd (17.3, 8.0)		2.24 dd (17.8, 4.6) 2.24 dd (17.8, 4.6)		2.24 dd (17.8, 4.5) 2.24 dd (17.8, 4.5)
8′	174.7		175.2		174.7
8a′	39.6	3.28 d (17.3)	39.5	3.22 d (17.0)	39.3	3.21 d (17.0)
		3.21 d (17.3)		3.06 d (17.0)		3.06 d (17.0)
9′	194.1		194.1		194.1
9a′	107.1		107.1		107.5
10a′	84.3		83.9		84.3
11′	14.8	1.34 d (7.2)	20.7	1.29 d (6.9)	20.6	1.29 d (6.9)
12′	169.1		168.7		168.7
13′	53.6	3.78 s	53.6	3.77 s	53.5	3.77 s
1′-OH OH′		11.92 s
5′-OH OH′				11.91 s		12.02 s