Table 1.

¹H NMR (6, 500 MHz; 7, 600 MHz) and ¹³C NMR (6, 125 MHz; 7, 150 MHz) Data of Compounds 6 and 7 in Acetone-d₆

position	6		7
	δC, type	δH (J in Hz)	δC, type	δH (J in Hz)
1		10.25, br s		10.16, d (4.0)
2	145.4, C		145.0, C
3	111.6, C		111.8, C
4	192.3, C		188.3, C
5	117.0, C		135.9, C
6	163.0, C		127.7, CH	8.31, m
7	123.3, CH	7.28, br d (7.6)	133.7, CH	7.89, td (7.5, 1.4)
8	138.0, CH	7.80, m	134.2, CH	7.93, td (7.5, 1.4)
9	119.6, CH	7.83, m	127.1, CH	8.33, m
10	136.2, C		135.5, C
11	183.1, C		183.7, C
12	113.7, C		113.9, C
13	156.9, C		156.9, C
14	131.6, CH	8.72, s	131.5, CH	8.74, s
15	137.1, C		136.4, C
16	64.1, C		64.2, C
17	65.3, CH	5.36, s	65.4, CH	5.36, d (4.7)
18	100.3, C		100.4, C
19	90.8, C		90.8, C
20	123.9, CH	6.04, d (9.9)	123.9, CH	6.02, dd (9.9, 0.4)
21	124.6, CH	5.96, d (10.0)	124.6, CH	5.94, dt (9.9, 0.5)
22	88.5, C		88.5, C
23	99.2, C		99.3, C
24	44.8, CH	5.23, d (3.9)	44.8, CH	5.22, dd (4.4, 1.6)
25	76.7, C		75.6, C
26	69.7, CH	4.37, m	69.8, CH	4.36, m
27	65.3, CH2	3.72, dd (11.4, 7.1)	65.4, CH2	3.73, m
		3.83, dd (11.6, 2.7)		3.84, d (11.6)
6-OH		12.18, br s
13-OH		12.58, br s		13.30, br s
17-OH		-		-
26-OH		5.90, br s		5.82, d (4.9)
27-OH		4.73, br s		4.64, d (4.6)