Table 1.

¹H and ¹³C-NMR Data for 1 and 2 (500 and 125 MHz, DMSO-d₆, δ in ppm).

Position	1		2
	δC, Type	δH mult. (J in Hz)	δC, Type	δH, mult. (J in Hz)
1	83.9, CH	2.74, dd, (9.2, 4.0)	83.8, CH	2.77, dd, (9.2, 3.9)
2	66.7, CH	3.54, m	66.6, CH	3.64, m
3	40.5, CH2	1.79, m	40.5, CH2	1.68, m
		1.43, m		1.42, m
4	33.7, CH	1.71, m	33.3, CH	1.59, m
5	45.7, CH	1.31, m	39.1, CH	1.76, m
6	31.3, CH2	1.41, m	35.8, CH2	1.51, m
		1.25, m		1.11, d, (13.0, 2.5)
7	45.6, CH	1.90, m	72.7, qC
8	26.2, CH2	1.44, m	30.4, CH2	1.54, m
		1.27, m		1.33, m
9	40.3, CH2	1.67, m	35.9, CH2	1.66, m
		0.98, m		1.35, m
10	39.2, qC		38.9, qC
11	150.3, qC		153.2, qC
12	108.7, CH2	4.67, s	108.5, CH2	4.96, d, (1.8)
		4.64, s		4.68 d, (1.8)
13	21.1, CH3	1.68, s	19.2, CH3	1.74, s
14	15.6, CH3	0.81, s	14.6, CH3	0.79, s
15	16.0, CH3	0.85, d, (7.6)	15.9, CH3	0.86, d, (7.6)
1-OH				4.38, d, (3.7)
2-OH		4.41, d, overlap		4.37, d, (3.7)
5-OH		4.41, d, overlap
7-OH				4.22, s