Table 1. ¹H and ¹³C NMR spectroscopic data of 1 in CDCl₃.

position	δH, mult, (J in Hz)	δC
1a	2.16, overlap	35.4 (CH2)
1b	1.87, ddd (13.9, 12.1, 5.1)
2a	2.49, ddd (15.2, 12.1, 5.1)	30.4 (CH2)
2b	2.38, ddd (15.2, 12.1, 5.1)
3		174.9 (C)
4		143.5 (C)
5	3.15, d (11.9)	54.7 (CH)
6	2.88, dd (11.9, 4.3)	64.5 (CH)
7	9.76, d (4.3)	203.8 (CH)
8		86.3 (C)
9	1.29, overlap	62.8 (CH)
10		42.8 (C)
11a	1.92, overlap	18.8 (CH2)
11b	1.37, m
12a	1.71, overlap	34.6 (CH2)
12b	1.41, dt (12.9, 3.2)
13		51.7 (C)
14		146.4 (C)
15	5.86, dd (3.4, 1.6)	126.2 (CH)
16a	2.30, dd (15.9, 1.6)	44.7 (CH2)
16b	1.95, dd (15.9, 3.4)
17		50.7 (C)
18	0.80, s	17.1 (CH3)
19	0.89, s	23.7 (CH3)
20	2.18, overlap	33.7 (CH)
21	0.94, d (6.4)	15.4 (CH3)
22a	1.72, overlap	39.1 (CH2)
22b	1.23, ddd (14.2, 7.5, 2.7)
23	4.63, m	76.4 (CH)
24	2.05, m	36.6 (CH2)
25	2.69, m	34.1 (CH)
26		179.8 (C)
27	1.30, d (7.3)	15.9 (CH3)
28a	4.95, m	114.8 (CH2)
28b	4.73, brs
29	1.75, s	23.9 (CH3)
30	1.05, s	20.3 (CH3)
OCH3-3	3.69, s	51.6 (CH3)
OCH3-8	3.01, s	54.3 (CH3)