Table 3.

NMR Data (900 and 700 MHz ¹H) for 1

position		δ C		δH, mult., J in Hzb		HMBC (H→C)	COSY	ROESY
1	β	72.7	3.825	brs			2α/β	2α,19 exo
2	β	37.8	2.272	dt	2.3, 12.7		2α, 1β, 3	19 exo, 30
2	α	37.8	2.741	dt	12.7, 3.7		2β, 1β, 3	3
3		84.6	4.366	dd	4.2, 11.7		2α/β	29, 5, 2α
4		41.6
5		40.1	2.508	dd	2.5, 12.6		6α	6α, 7β, 3
6	β	20.9	0.901	overlapped			6β, 5,7β	19 endo
6	α	20.9	1.721	overlapped			7α, 5	5
7	β	26.4	1.423	overlapped			7α, 8	5, 7α
7	α	26.4	2.193	overlapped			6α, 7β, 8	7b, 6α, 8
8		49.1	1.787	dd	4.2, 12.5		7α	19 endo, 6β, 2β, 15
9		a
9		a
11	β	26.3	1.429	overlapped	6.0, 11.3		11α, 12α/β	19 exo, 11α
11	α	26.3	2.814	ddd	14.7		11β, 12α/β	28, 11b, 12α
12	β	34.1	1.620	overlapped			11α, 12α	21, 18
12	α	34.1	1.707	overlapped			11α, 12β	11α
13		41.8
14		47.8
15		81.0	4.291	d	6.8			18,8
16		112.4
17		60.8	1.781	d	10.8			22α
18	Me	19.5	1.246	s		12, 13,14, 17		15
19	exo	30.6	0.447	d	4.2		19 endo	11β, 2β, 1β1
19	endo	30.6	0.729	d	4.2		19 exo	6β, 30, 8
20		23.3	1.743	m			22α	22β
21	Me	19.4	0.952	d	6.5	20, 22,17	20	12β, 22α, 22β
22	β	29.6	1.954	m			22α, 23	21, 17
22	α	29.6	2.675	dt	12.1, 1.6		22β, 20, 23	20, 21, 27
23		73.8	4.598	dt	12.1, 1.6	3	22α/β, 24
24		84.1	3.685	d	6.8
26	Me	30.7	1.406	s		27, 25, 24		24
27	Me	25.9	1.262	s		26, 25, 24		22α, 22β, 23, 24
28	Me	11.6	1.186	s		13, 8, 14, 15		11α
29	Me	25.7	1.430	s		30, 3, 4, 5		3
30	Me	14.7	1.147	s		29, 3, 4, 5		19 endo, 6β, 2β
1'		107.7	4.874	d	7.3	3	2'
2'		75.0	4.046	dd/t	7.3, 8.7		3'
3'		78.7	4.123	dd/t	8.7		4'
4'		71.4	4.206	m
5'	α	67.1	3.561	dd	9.5, 11.4		5' β
5′	β	67.1	4.228	dd	5.3, 11.4

^aδ_C could not be obtained due to insufficient signal intensity.

^bCoupling patterns given as line distances (first-order assumptions); for a detailed interpretation of the xylp ¹H spin system, see the data for 4 in Table 1.