Table 1.

¹H and ¹³C NMR data for 1 in DMSO-d₆.

No.	δH, mult (J in Hz)	δC, type	HMBC
1	7.73, s	2, 3, 8, 9
2		79.7, C
3		197.0, C
4	7.18, d (8.4)	124.9, CH	3, 6, 8
5	6.11, d (8.4)	107.6, CH	6, 7, 9
6		159.9, C
7		102.7, C
8		157.0, C
9		113.7, C
10	2.39, d (15.5)	35.6, CH2	2, 3, 11, 12
	2.44, d (15.5)		2, 11, 22
11		66.6, C
12		169.7, C
14	3.25, m	43.4, CH2
	3.30, m
15	1.78, m	24.7, CH2	17
	1.95, m		17
16	1.80, m	28.5, CH2	15, 18
	2.47, m		15, 18
17		68.7, C
18		172.3, C
19	8.67, s		11, 17
20	1.66, dd (13.4, 5.8)	27.3, CH2
	1.84, dd (13.4, 9.2)		17
21	2.71, dd (9.2, 5.8)	52.6, CH	12, 20, 22
22		48.3, C
23	0.67, s	21.5, CH3	2, 21, 22, 24
24	0.95, s	18.1, CH3	2, 21, 22, 23
25	6.77, d (10.0)	116.4, CH	6, 8, 27
26	5.66, d (10.0)	127.3, CH	7, 27
27		77.2, C
28	1.36, s	27.9, CH3	26, 27, 29
29	1.40, s	27.3, CH3	26, 27, 28