Table 2.

1D and 2D NMR spectroscopic data for dodovisate C (1), methyl dodovisate A (2), methyl iso-dodovisate A (3).

Position	Dodovisate C (1)			Methyl Dodovisate A (2)			Methyl Iso-Dodovisate A (3)
	δ 13C (150 MHz)	δ 1H (600 MHz)	HMBC (H→C)	δ 13C (500 MHz)	δ 1H (125 MHz)	HMBC (H→C)	δ 13C (500 MHz)	δ 1H (125 MHz)	HMBC (H→C)
1	130.9 s			135.5 s			38.3 d	1.52 m a	2, 4, 6, 7, 10, 11
2	33.8 t	2.28 dd (12.3, 7.0) 2.07 dd (12.3, 6.8)	1, 3, 4, 7, 11	33.3 t	2.30 m 2.71 bd (11.5)	1, 3, 4, 7	135.0 d	6.31 d (3.7)	1, 4, 5w, 11
3	123.2 d	5.49 ddd (8.9, 7.0, 6.8)	1, 2, 5	123.7 s			126.8 s
4	124.7 d	5.98 dd (8.9, 5.1)	2, 6	132.0 d	7.10 d (5.6)	2, 3, 5, 6	125.9 d	7.06 d (11.1)	2, 6
5	128.0 d	6.40 dd (11.4, 5.1)	3, 4, 7	127.6 d	6.58 dd (11.6, 5.6)	1, 3, 4	131.5 d	6.75 dd (11.1, 5.7)	2 w, 4, 6, 7
6	131.1 d	6.64 d (11.4)	1, 4, 5, 7, 8	136.6 d	6.97 d (11.6)	3, 4, 5, 7, 8	119.5 d	6.13 d (5.7)	4
7	134.0 s			134.5 s			143.5 s
8	39.1 s			40.4 s			42.3 s
9	32.3 d	1.69 m	7, 8, 19	33.2 d	1.78 m	19	34.9 d	1.89 m a	19
10	26.2 t	1.40 m	1, 8, 9	26.9 t	1.45 m 1.55 m	1, 8, 9	26.3 t	1.54 m a 1.73 m (dquin like)	1 w, 8, 11
11	31.4 t	2.16 m 2.34 m	1, 7, 10	31.8 t	2.28 m 2.43 m	1, 7, 10	28.4 t	1.78 m2.02 m	1 w, 9, 10
12				166.9 s			167.6 s
13	37.5 t	1.69 m	7, 8, 9, 14, 15	38.3 t	1.80 m	8, 9, 14	37.0 t	1.83 m a, 1.89 ma
14	18.4 t	1.88 m 2.16 m	13, 15, 16, 18	19.5 t	1.97 m 2.23 m	13, 15, 16, 18	19.6 t	2.53 dbrt (3.8, 12.2) 2.43 dbrt (5.2, 12.2)	9 w, 13, 15, 16, 18
15	124.9 s			125.6 s			125.6 s
16	110.0 d	6.18 s	15, 17, 18	110.9 d	6.25 s	15, 17, 18	110.9 d	6.34 brs	15 w, 17, 18
17	141.5 d	7.20 s	15, 16, 18	142.6 d	7.34 s	15, 16, 18	142.8 d	7.34 brs	15, 16
18	137.3 d	7.10 s	15, 16, 17	138.4 d	7.18 s	15, 16, 17	138.4 d	7.25 brs	15, 16, 17
19	22.0 q	0.85 s	7, 8, 9, 13	23.3 q	0.88 s	8, 13	30.0 q	0.72 s	7, 8, 9, 13, 14 w
20	15.1 q	0.82 d (3.6)	8, 9, 10	15.9 q	0.83 d (6.8)	8, 9, 10	16.3 q	0.81 d (7)	8, 9, 10
21				51.9 q	3.78 s	12	51.8 q	3.75 s	12

^a Overlapping signals; ^w weak signal.