Table 1.

NMR spectral data of compound 1 (DMSO-d₆, 850 and 214 MHz).

No.	δH [mult., J (Hz)]	δC (mult.)	HMBC
1	2.65 m 1.11 m	42.6 CH2	2, 3, 5
2	3.73 dd (10.3, 4.2)	66.8 CH	1, 3, 5
3	3.62 d (10.3)	88.0 CH	2, 4, 29, 30, 33
4	-	39.2 C	-
5	1.03 dd (12.8, 3.4)	51.1 CH	3, 4, 7, 10, 18
6	1.66 m 1.52 m	18.0 CH2	5, 7, 8
7	2.21 m 1.46 m	26.8 CH2	5, 8, 9
8	-	127.4 C	-
9	-	143.5 C	-
10	-	38.5 C	-
11	4.25 brs	67.9 CH	8, 9, 12
12	5.00 d (3.4)	78.3 CH	9, 11, 13, 14, 19, 31
13	-	47.6 C	-
14	2.06 t (6.2)	39.8 CH	-
15	1.68 m 1.45 m	31.3 CH2	8, 13, 14, 17
16	2.28 m 2.18 m	33.5 CH2	14, 15, 17
17	-	86.0 C	13, 16, 22
18	1.20 s	22.1 CH3	1, 5, 9, 10
19	0.61 s	13.2 CH3	12, 13, 14, 17
20	1.67 m	33.0 CH	17, 21, 23
21	1.22 d (6.3)	21.8 CH3	17, 20, 22
22	2.08 m 1.87 m	31.7 CH2	21, 24
23	2.41 m 1.81 m	35.0 CH2	24, 25, 28
24	-	155.4 C	-
25	2.19 m	32.3 CH	23, 24, 26, 27
26	0.98 d (6.8)	21.6 CH3	24, 25, 27
27	0.96 d (6.8)	21.5 CH3	24, 25, 26
28	4.70 brs 4.66 brs	106.9 CH2	23, 24, 25
29	0.73 s	17.9 CH3	3, 4, 5, 30
30	0.91 s	28.5 CH3	3, 4, 5, 29
31	-	169.5 C	-
32	1.98 s	20.6 CH3	31
33	-	170.1 C	-
34	2.05 s	21.0 CH3	33
2-OH	5.30 brs	-	1, 2, 3
11-OH	5.21 d (6.8)	-	9, 11
17-OH	5.39 s	-	13, 17