Table 1.

¹H and ¹³C NMR spectral data (600 MHz for ¹H and 150 MHz for ¹³C in CDCl₃) of compounds 1 and 2 (δ in ppm, J in Hz)

No.	1		2
	δ H	δ C	δ H	δ C
1	5.93, brs	77.7	5.57, brs	81.3
2	5.23, brt-like (2.9)	67.8	4.22, m	65.9
2-OH			3.96, brd (5.0)
3	3.57, brs	76.7	5.05, brd (2.7)	78.2
4		38.2		37.1
5	2.61, brd (12.3)	34.1	2.51, brd (13.0)	35.9
6	2.06, overlap	21.3	2.08, t-like (14.0)	21.8
	1.91, d (11.8)		1.88, brd (14.0)
7	4.52, brs	77.6	4.54, brs	77.7
8		79.7		79.9
8-OH	3.96, s		4.03, s
9	3.28, overlap	40.5	3.60, d (10.4)	41.0
10		43.0		43.8
11	5.87, dt (10.6, 3.0)	74.2	5.89, dt (10.4, 2.6)	74.7
12	2.06, overlap	34.5	2.14, m	34.0
13		133.2		133.2
14		216.2		216.4
15	4.37, brt (5.0)	120.4	4.79, brt (5.0)	120.2
16	3.28, overlap	44.5	3.62, overlap	44.2
	3.01, brd (16.8)		3.17, brd (15.8)
17	1.39, s	26.3	1.33, s	26.7
18	1.08, s	29.4	0.88, s	28.1
19	1.01, s	23.1	1.07, s	23.0
20	1.26, s	14.1	1.33, s	15.0
2-OCOCH3		169.5
	2.01, s	20.9
3-OCOCH3				170.7
			1.62, s	20.5
7-OCOCH3		168.1		167.8
	2.20, s	21.2	2.22, s	21.2
1-OCOPh
1’		130.6		130.4
2′,6′	8.25, d (7.5)	129.6	8.29, d (7.4)	129.6
3′,5′	7.53, overlap	128.4	7.56, t-like (7.7)	128.5
4′	7.68, t-like (7.5)	133.5	7.72, t-like (7.4)	133.8
7′		164.4		167.8
11-OCOPh
1″		129.6		129.4
2″,6″	8.38, d (7.5)	130.6	8.10, d (7.4)	130.3
3″,5″	7.53, overlap	128.2	7.49, t-like (7.7)	128.6
4″	7.62, t-like (7.5)	133.2	7.61, t-like (7.4)	133.6
7″		166.5		165.7