Table 2.

¹³C (150 MHz) and ¹H (600 MHz) NMR data for compounds 4 and 5 ^a.

Position	4		5
	δCb, Type	δH (J in Hz)	δC b, Type	δH (J in Hz)
1	39.9, CH2	1.60, m c	40.0, CH2	1.68, m
		1.43, m c		0.78, m c
2	18.3/18.7 d, CH2	1.60, m c	18.7, CH2	1.57, m c
		1.43, m c		1.42, m c
3	42.2, CH2	1.37, m	42.1, CH2	1.37, m
		1.15, m		1.13, m
4	33.4, C		33.3, C
5	56.6, CH	0.80, m c	56.7, CH	0.78, m c
6	18.7/18.3 d, CH2	1.68, d (12.6)	18.3, CH2	1.57, m c
		0.80, m c		1.42, m c
7	41.5, CH2	1.79, d (12.6)	41.5, CH2	1.82, m
		0.94, d (12.6) c		0.90, m
8	37.6, C		37.5, C
9	58.7, CH	0.94, d (12.6) c	58.7, CH	0.87, m c
10	37.0, C		37.6, C
11	25.8, CH2	1.82, m	26.0, CH2	1.79, m
		1.55, d (12.6)		1.52, m
12	74.1, CH	3.80, dd (10.8, 4.5)	74.4, CH	3.80, dd (11.4, 4.2)
13	45.3, C		44.7, C
14	49.0, CH	1.44, m	53.4, CH	1.42, mc
15	22.5, CH2	2.06, d (15.0)	24.6, CH2	2.25, m
		1.50, dd (13.5, 3.9)		1.63, m
16	69.2, CH	4.00, d (3.6)	73.8, CH	4.09, dd (9.3, 7.5)
17	126.9, C		128.6, C
18	170.7, C		169.1, C
19	95.9, CH	6.12, d (1.2)	95.4, CH	6.18, s
20	170.4, C		169.2, C
21	33.4, CH3	0.81, s	33.4, CH3	0.84, s c
22	21.4, CH3	0.85, s c	21.4, CH3	0.81, s
23	16.3, CH3	0.85, s c	16.7, CH3	0.84, s c
24	17.9, CH3	0.90, s	17.6, CH3	0.91, s
25	15.4, CH3	1.11, s	16.6, CH3	1.21, s
16-OMe	57.7, CH3	3.46, s	58.0, CH3	3.54, s

^a Data obtained in CDCl₃. ^b Carbons correlating with the corresponding protons in the HSQC spectrum. ^c Overlapped with other signals. ^d Overlapped with other signals.