Table 1.

¹H (600 MHz) and ¹³C NMR (150 MHz) Spectroscopic Data of Compounds 11, 25, and 27 in CDCl₃

	11		25		27
position	<δc	<δH (J in Hz)	δc	δH (J in Hz)	δc	δH (J in Hz)
1	160.8	7.57, s	160.7	7.57, s	160.6	7.60, s
2	137		137		137
3	209.7		209.7		209.7
4	72.4		72.3		72.3
5	72.2	4.26, s	72.2	4.25, s	72.2	4.27, s
6	60.5		60.6		60.6
7	64.5	3.59, s	64.4	3.55, s	64.4	3.51, s
8	35.6	3.51, d (2.5)	35.7	3.47, d (2.5)	35.6	3.47, d (2.6)
9	78.3		78.1		78.2
10	47.6	3.84, s	47.6	3.82, m	47.6	3.84, m
11	44.1	2.37, m	44.3	2.37, m	44.2	2.37, m
12	78.4	4.98, s	78.3	5.00, s	78.3	5.00, s
13	83.9		83.9		83.9
14	80.2	4.83, d (2.5)	80.5	4.76, d (2.5)	80.5	4.78, d (2.5)
15	143.1		143.1		143.2
16	113.5	4.99, s; 5.03, s	113.5	4.98, s; 4.95, s	113.5	4.98, s; 4.95, s
17	18.7	1.84, s	18.8	1.8, s	18.8	1.83, s
18	18.5	1.31, d (7.2)	18.4	1.37, d (7.2)	18.4	1.33, d (7.2)
19	10	1.79, s	10	1.79, s	10	1.79, s
20	65.4	3.78, d (12.4)	65.2	3.79, d (12.6)	65.2	3.81, d (12.5)
		3.97, d (12.4)		3.94, d (12.5)		3.95, d (12.5)
1′	117.6		117.1		117.1
2′	120.2	5.44, d (11.3)	122.4	5.63, d (15.4)	122.4	5.65, d (15.5)
3′	136.2	6.23, dd (15.6, 11.3)	135.2	6.65, dd (15.4, 10.7)	135.2	6.68, dd (15.4, 10.7)
4′	126.7	6.86, dd (15.0, 11.8)	128.7	6.04, dd (15.2, 10.7)	128.7	6.06, dd (15.1, 10.7)
5′	140.2	5.82, m	139.5	5.85, m	139.5	5.87, m
6′	32.8	2.10, m	32.8	2.06, m	32.8	2.10, m
7′	28.5	1.40, m	28.9	1.41, m	28.9	1.40, m
8′	31.6	1.27, m	31.5	1.26, m	31.4	1.26, m
9′	22.6	1.26, m	22.6	1.27, m	22.6	1.27, m
10′	14.2	0.88, t	14.2	0.88, t	14.2	0.88, t
1″	169.8		172		172.7
2″	21.3	1.99, s	36.1	2.22, m	34.5	2.25, m
3″			27.4	1.65 m	24.6	1.65, m
4″			22.5	1.27, m	27.4	1.27, m
5″			14.3	0.98, t	22.5	1.26, m
6″					14	0.98, t