Table 2.

¹H- and ¹³C-NMR data (500 and 125 MHz) for compounds 5 and 6 ^a.

Position	5			6
	δC, Type b		δH (J in Hz)	δC, Type c		δH (J in Hz)
1	39.9	CH2	0.62, ddd (13.0, 13.0, 3.0)	39.9	CH2	0.61, br dd (12.0, 12.0)
			1.57, m			1.57, m
2	18.7	CH2	1.40, m	18.4	CH2	1.40, m
			1.60, m			1.60, m
3	42.2	CH2	1.11, br dd (12.5, 5.0)	42.2	CH2	1.12, m
			1.35, m			1.35, m
4	33.5	C		33.5	C
5	56.5	CH	0.90, m	55.8	CH	0.90, m
6	18.3	CH2	1.44, m	18.7	CH2	1.40, m
			1.60, m			1.57, m
7	41.4	CH2	1.11, m	41.6	CH2	1.04, ddd (12.0, 12.0, 4.5)
			1.82, m			1.88, m
8	37.2	C		37.5	C
9	53.2	CH	1.35, m	53.4	CH	1.24, m
10	37.2	C		37.2	C
11	22.0	CH2	1.74, br d (14.0)	21.9	CH2	1.75, m
			1.82, m			1.83, m
12	73.6	CH	5.42, br s	73.8	CH	5.40, br s
13	41.2	C		40.9	C
14	45.9	CH	2.14, br d (13.0)	49.9	CH	1.73, m
15	23.8	CH2	1.59, m	24.8	CH2	1.48, m
			2.07, br d (13.0)			2.20, br dd (11.0, 5.0)
16	71.8	CH	4.18, d (3.5)	75.3	CH	4.34, dd (8.5, 7.0)
17	116.4	C		118.2	C
18	158.9	C		157.6	C
19	141.0	CH	7.19, br s	141.4	CH	7.18, br s
20	110.2	CH	6.28, br s	108.7	CH	6.30, br s
21	33.5	CH3	0.85, s	33.5	CH3	0.85, s
22	21.5	CH3	0.81, s	21.6	CH3	0.82, s
23	16.2	CH3	0.83, s	16.2	CH3	0.83, s
24	17.6	CH3	0.93, s	17.4	CH3	0.94, s
25	21.0	CH3	1.18, s	22.3	CH3	1.28, s
12OAc	170.8	C		170.5	C
	21.6	CH3	1.86, s	21.4	CH3	1.84, s
16OMe	56.6	CH3	3.40, s	56.9	CH3	3.44, s

^a Data were obtained in CDCl₃. ^b The assignments are based on HSQC, COSY, and HMBC results. ^c Carbons correlating with the corresponding proton in HSQC analysis.