Table 1.

¹H and ¹³C-NMR data of 1 and 2 in CD₃OD at 400 MHz and 100 MHz, J in Hz.

No.	1		2
	δH	δC	δH	δC
1		175.5		207.0
2	4.03 (1H, br. d, J = 17.4, α-H)	35.9	5.77 (1H, dd, J = 10.0, 2.4)	128.9
	3.08 (1H, dd, J = 17.4, 8.7, β-H)
3	5.53 (1H, dd, J = 11.4, 8.7)	118.1	6.66 (1H, ddd, J = 10.0, 5.2, 2.0)	143.5
4	6.62 (1H, dd, J = 11.4, 3.1)	130.2	3.24 (1H, dt, J = 20.0, 2.4)	36.5
			2.05 (1H, dd, J = 20.0,5.2)
5		126.5		78.2
6	5.30 (1H, br. s)	74.8	3.52 (1H, t, J = 2.0)	75.2
7	2.03 (1H, m)	33.7		33.8
	1.43 (1H, m)
8	1.50 (1H, m)	33.5		30.5
9	1.77 (1H, m)	47.2	1.87 (1H, m)	41.0
10		142.5		52.8
11	2.14 (1H, dt, J = 16.1, 4.2)	36.9	2.42 (1H, dt, J = 12.4, 4.0)	33.8
	1.36 (1H, m)		1.36 (1H, m)
12	3.47 (1H, dd, J = 10.9, 4.5)	78.6	3.47 (1H, dd, J = 11.2, 4.4)	78.7
13		49.1		49.0
14	1.25 (1H, m)	53.8	1.25 (1H, m)	55.3
15	1.72 (1H, m)	23.8	1.76 (1H, m)	24.6
	1.30 (1H, m)		1.31 (1H, m)
16	1.73 (1H, m)	27.7	1.76 (1H, m)	27.6
	1.60 (1H, m)		1.54 (1H, m)
17	1.61 (1H, m)	54.5	1.56 (1H, m)	55.0
18	0.78 (3H, s)	8.1	0.76(3H, s)	8.0
19	1.84 (3H, s)	15.6	1.30(3H, s)	16.1
20	2.01 (1H, m)	38.9	2.05 (1H, m)	38.9
21	1.18 (3H, d, J = 6.8)	15.3	1.18 (3H, d, J = 6.8)	15.5
22	4.62 (1H, dt, J = 12.9, 3.4)	80.8	4.60 (1H, dt, J = 13.6, 4.0)	80.9
23	2.55 (1H, dd, J = 18.0, 13.2)	32.5	2.58 (1H, dd, J = 18.0, 13.2)	32.3
	2.24 (1H, dd, J = 18.0, 3.2)		2.21 (1H, dd, J = 18.0, 3.2)
24		157.9		160.5
25		126.3		123.6
26		168.6		168.7
27	4.37 (1H, d, J = 11.7)	56.3	4.46 (1H, d, J = 10.8)	63.5
	4.30 (1H, d, J = 11.7)		4.61 (1H, d, J = 10.8)
28	2.10 (3H, s)	20.2	2.13 (3H, s)	20.8
1′			4.31 (1H, d, J = 8.0)	103.9
2′			3.16 (1H, t, J = 8.0)	75.0
3′			3.26 (1H, m)	78.0
4′			3.29 (1H, m)	71.5
5′			3.24 (1H, m)	78.0
6′			3.85 (1H, dd, J = 12.0, 2.0)	62.7
			3.67 (1H, dd, J = 12.0, 5.2)