Table 1.

¹H and ¹³C NMR data for 1 and 2 (600 MHz for ¹H, 150 MHz for ¹³C, CDCl₃).

Position	1			2		COSY	HMBC
	δC, mult.	δH (J in Hz)		δC, mult.	δH (J in Hz)
1	180.1, C			180.5, C
1-OH					9.34, s
2	34.4, CH2	2.33, t (6.6)		34.8, CH2	2.29, t (6.6)	3	3, 4
3	24.9, CH2	1.60, m		25.0, CH2	1.59, m	2, 4	2, 4
4	29.2, CH2	1.30, m		29.3, CH2	1.30, m	3
5	29.4, CH2	1.30, m		29.4, CH2	1.30, m
6	29.9, CH2	1.30, m		29.6, CH2	1.30, m	7
7	31.3, CH2	1.51, m		30.9, CH2	1.48, m	8	9
8	32.5, CH2	2.52, t (7.6)		33.2, CH2	2.50, t (7.6)	7	6, 9, 10
9	137.9, C			138.1, C
10	129.4, CH	7.02, d (7.2)		129.0, CH	7.04, d (7.2)	11	8, 12
11	127.2, CH	6.95, d (7.2)		127.6, CH	6.96, d (7.2)	10	14
12	135.5, C			134.7, C
13	21.2, CH3	2.27, s		21.2, CH3	2.30, s		11, 12, 14
14	130.4, CH	6.94, s		130.3, CH	6.97, s		9, 13
15	137.5, C			136.1, C
16	37.2, CH2	3.33, br d (6.4)		129.1, CH	6.47, br d (11.4)	17	12, 14, 18
17	137.7, CH	5.93, tdd (6.4, 10.1, 16.9)		126.9, CH	5.77, dq (11.4, 7.0)	16, 18	18
18	115.7, CH2	5.04, tdd (1.7, 1.7, 10.1)		14.6, CH3	1.71, dd (1.8, 7.0)	17	16, 17
		5.00, tdd (1.7, 1.7, 16.9)