Table 1.

¹H and ¹³C NMR data for 1 and 2 (δ in ppm, J in Hz)

No.	1		2
	1H	13C	1H	13C
1	1.92, m	26.7, CH2	1.61, overlap	32.1, CH2
	1.50, m		1.48, m
2	1.52, m	30.5, CH2	1.76, m	30.5, CH2
	1.80, m		1.71, m
3	3.73, br s	72.3, CH	3.69, brd (2.5)	72.4, CH
4	1.60, overlap	37.3, CH	1.54, m	36.8, CH
5	1.59, overlap	41.8, CH	1.59, overlap	41.7, CH
6	1.69, overlap	21.7, CH2	1.73, m	21.9, CH2
	1.35, m		1.30, m
7	2.10, m	28.1, CH2	2.11, overlap	28.4, CH2
	2.04, m		2.04, m
8		130.9, C		129.0, C
9		135.1, C		133.9, C
10		41.7, C		37.5, C
11	2.23, m	25.7, CH2	2.33, dt (19.0,4.0)	33.4, CH2
			2.09, overlap
12	1.80, m	30.4, CH2	4.17, d (4.0)	73.4, CH
	1.70, overlap
13		46.7, C		49.9, C
14	2.80,m	48.7, CH	3.23,m	41.6, CH
15	1.74, overlap	24.0, CH2	1.83, m	22.9, CH2
	1.40, m		1.46, m
16	2.13, m	38.9, CH2	2.07, overlap	38.5, CH2
	1.75, overlap		1.79, m
17		86.4, C		88.6, C
18	0.74, s	14.6, CH3	0.63, s	14.4, CH3
19	3.86, d (10.7)	66.3, CH2	0.96, s	18.5, CH3
	3.63, d (10.7)
20	3.78, q (6.4)	73.1, CH	3.76, q (6.4)	72.6, CH
21	1.18, d (6.4)	18.8, CH3	1.29, d (6.4)	18.4, CH3
22	0.94, d (6.0)	17.1, CH3	0.95, d (6.5)	16.7, CH3

Data (δ) were measured in methanol-d₄. The assignments were based on DEPT, ¹H-¹H COSY, HSQC, and HMBC experiments