Table 1.

NMR data of compounds 1–2 (¹H: 600 MHz, ¹³C: 150 MHz, DMSO-d₆).

Position	1				2
	δc, Type		δH (J in Hz)		δC, Type		δH (J in Hz)
1
2	74.0	CH	5.44, dd (2.4, 13.2)		77.7	CH	5.31, d (10.8)
3	69.8	CH	5.41, dd (2.4, 13.2)		70.4	CH	4.65, d (10.8)
4	189.4	C			198.6	C
5	107.5	C
6	92.6	CH	6.13, d (2.4)		95.3	C
7	162.9	C			160.9	C
8	106.8	CH	6.26, t		157.2	C
9	155.6	C			158.5	C
10	104.8	C			100.4	C
1′	111.2	C			113.9	C
2′	116.8	C			102.3	CH	6.33,d (1.8)
3′	102.8	CH	6.34, d (1.2)		160.4	C
4′	158.5	C			164.9	C
5′	106.8	CH	6.27, dd (4.4, 8.4)		106.4	CH	6.25, dd (1.8, 8.4)
6′	127.1	CH	7.21, d(8.4)		129.4	CH	7.15, d (8.4)
1″			2.51, m		26.4	CH2	2.38, m
2″	46.8	CH	2.41, m		46.3	CH	2.38, m
3″	31.2	CH2	1.96, m		30.9	CH2
4″	123.9	CH	4.91, t		123.4	CH	4.88, t
5″	131.1	C			130.6	C
6″	18.7	CH3	1.43, S		25.5	CH3	1.52, S
7″	26.0	CH3	1.55, S		17.6	CH3	1.45, S
8″	148.1	C			147.7	C
9″	117.0	CH2	4.51, 4.56, br s		110.8	CH2	4.44, 4.52, br s
10″	18.0	CH3	1.52, S		18.4	CH3	1.52, S
1‴			2.81, m
2‴	47.2	CH	2.41, m
3‴	31.5	CH2	1.96, m
4‴			4.95, t
5‴
6‴	18.0	CH3	1.49, S
7‴	27.4	CH3	1.58, S
8‴	148.4	C
9‴			4.48, 4.38, br s
10‴	25.9	CH3	1.51, S
OCH3	55.7	CH3	3.70, S		55.3	CH3	3.36, S
OH							11.8, S
OH							9.47, S
OH							9.35, S
OCH2O							5.95, 5.65, S