Table 1.

¹H- and ¹³C- NMR Data of compounds 1 and 2 at 400 and 100 MHz, resp., in acetone-d₆. δ in ppm, J in Hz.

Position	1			2
	δH	δC		δH	δC
1		161.9			165.9
2		111.1			111.8
3		163.7			170.3
4	6.42 s	93.3			105.0
4a		156.3			158.3
5	7.23 d (9.2)	116.8		7.70 d (8.0)	115.9
5a		152.4			145.7
6	7.33 d (9.2)	124.5		7.37 dd (8.0, 7.6)	126.2
7		152.5		7.44 d (7.6)	121.9
8		131.1			147.4
8a		119.6			122.1
9		184.3			181.9
9a		104.3			103.0
10	3.37 d (7.2)	22.1		3.36 d (7.2)	21.6
11	5.29 t (7.2)	123.6		5.26 t (7.2)	122.3
12		131.6			132.5
13	1.79 s	18.1		1.80 s	18.0
14	1.65 s	26.0		1.66 s	25.9
15	3.49 t (7.6)	22.6			206.1
16	1.84 t (7.6)	44.5		3.67 s	55.3
17		71.1			72.0
18	1.30 s	29.8		1.45 s	30.4
19	1.30 s	29.8		1.45 s	30.4
OH-1	13.69 s			14.33 s a
OH-3	9.68 s			14.40 s a
OH-7	8.72 s
OH-8				15.12 s a
OH-18	3.81 s			2.81 s

^a These data may be interchanged.