Table 1.

NMR data and HMBC correlations of Compound 14 (CDCl₃).

Position	δC	δH (m, J in Hz)	HMBC (H→C) a
1	39.8, CH2	1.73, 0.83 (m)	C-10
2	18.5, CH2	1.63, 1.46 (m)	C-4, C-10
3	42.0, CH2	1.39, 1.15 (m)	C-4
4	33.2, C	-	-
5	56.4, CH	0.83 (m)	C-4
6	18.0, CH2	1.58, 1.42 (m)
7	41.4, CH2	1.74, 0.95 (m)	C-8
8	37.4, C	-	-
9	58.8, CH	0.93 (m)	C-10, C-12
10	37.4, C	-	-
11	26.1, CH2	1.79, 1.50 (m)	C-10, C-12
12	80.4, CH	3.57 (dd, 11.05, 4.25)	C-9, C-11, C-18, C-25
12-OH		4.19 (s)
13	39.9, C	-	-
14	52.7, CH	1.25 (m)	C-8, C-9, C-13, C-16, C-18
15	23.5, CH2	2.17, 2.37 (m)	C-16
16	136.3, CH	6.87 (dd, 6.80, 3.40)	C-14, C-15, C-18, C-20
17	127.3, C	-	-
18	58.7, CH	2.54 (m)	C-12, C-13, C-25
19	98.5, CH	5.74 (d, 5.10)	C-18
20	166.9, C	-	-
21	21.3, CH3	0.81 (s)	C-4
22	33.2, CH3	0.83 (s)	C-4
23	16.5, CH3	0.85 (s)	C-1, C-5, C-9, C-10
24	16.7, CH3	0.93 (s)	C-7, C-8, C-9, C-14
25	9.1, CH3	0.86 (s)	C-12, C-13, C-14, C-18

^a HMBC correlations are from proton(s) stated for the indicated carbons.