Table 1. H NMR Data for Compounds 1−8 (400 MHz, J in Hz).

No.	1b	2b	3a	4b	5b	6a	7a	8a
2			6.82 s	6.62 s	7.04 s	6.63 s	6.76 s	6.77 s
3	6.51 s
4					6.93 s
5		5.88 s
6	7.07 s		6.82 s	6.62 s	6.93 s	6.63 s	6.76 s	6.77 s
7	5.02 d (9.3)	6.45 s	4.41 d (9.3)	4.38 d (9.5)	4.41 d (9.0)	4.52 d (7.4)	4.71 d (5.9)	4.73 d (4.9)
8	3.76 m		1.77 m	2.62 m	2.45 m	2.24 m	4.42 m	4.65 m
9	1.09 d (6.3)	1.86 s	1.08 d (6.6)	1.07 d (6.6)	1.03 d (6.8)	1.12 d (7.0)	1.13 d (6.3)	1.31 d (6.1)
2′			6.956 d (2.0)	7.56 d (2.0)	7.58 d (2.0)	6.78 d (1.8)	7.33 s	7.53 d (2.0)
3′	6.50 s	6.53 s
5′			6.97 d (8.2)	6.92 d (8.8)	7.08 d (8.5)	6.72 d (8.0)		6.97d (8.5)
6′	7.08 s	6.45 s	6.97 dd (8.2, 2.0)	7.55 dd (8.8, 2.0)	7.71 dd (8.5, 2.0)	6.64 dd (8.0, 1.8)	7.33 s	7.57 dd (8.5, 2.0)
7′	5.25 d (3.2)	4.44 s	5.15 d (8.8)			2.83 dd (13.4, 5.0), 2.45 dd (13.4, 11.1)
8′	4.34 m	2.31 q (7.3)	2.28 m	3.83 m	4.03 m	2.61 m
9′a	1.12 d (6.8)	1.11 d (7.2)	0.66 d (7.0)	4.30 dd (9.3, 8.8)	4.28 dd (9.0, 8.5)	4.02 dd (8.4, 6.3)
9′b				4.15 dd (9.3, 7.5)	4.11 dd (9.0, 6.8)	3.73 dd (8.4, 5.1)
OMe-2	3.82 s
OMe-3			3.87 s	3.87 s	3.86 s	3.83 s	3.83 s	3.82 s
OMe-4	3.89 s	3.79 s	3.78 s	3.83 s		3.75 s	3.74 s	3.70 s
OMe-5	3.88 s		3.87 s	3.87 s	3.86 s	3.83 s	3.83 s	3.82 s
OMe-2′	3.83 s	3.90 s
OMe-3′			3.83 s	3.94 s	3.90		3.89 s	3.85 s
OMe-4′	3.89 s	3.84 s	3.83 s	3.95 s	3.93	3.83 s
OMe-5′	3.90 s	3.64 s					3.89 s
OMe-7′							3.90 s	3.86 s

^ain methanol-d₄.

^bin CDCl₃.