Table 1.

¹H (700 MHz), ¹³C (175 MHz), and HMBC NMR data for compound 7 (δ in ppm, J in Hz).

N	δH (J in Hz)	δC	HMBC	ROESY
1	7.40 d (8.4), 1H	132.4	C-3, 4, 4a	2
2	6.55dd (2.6, 8.4), 1H	109.5	C-3, 4, 11b	1
3		156.7
4	6.40 dd (2.6), 1H	103.5	C-2, 3, 4a, 11b
4a		156.6
6	4.22 dd (5.0, 11,0), 1H	66.6	C-4a, 6a, 6b, 11a	6, 6a, 7
	3.66 t (11.0), 1H	66.6	C-4a, 6a, 6b, 11a	6
6a	3.48 m, 1H	40.7	C-6, 6b, 10a	6, 11a
6b		115.6
7	6.66 s, 1H	105.1	C-6, 6a, 6b, 8, 9, 10, 10a	6, OCH3-8
8		141.0
9		144.5
10		111.8
10a		152.4
11a	5.40 d (7.0), 1H	77.4	C-1, 4a, 6, 6a, 6b, 11b	6a
11b		113.3
1’	3.32 m, 2H	23.0	C-8, 9, 10, 2’, 3’	2’, 9’
2’	5.30 t (7.2), 1H	121.5	C-10, 1’, 4’, 9’	1’, 4’
3’		135.6
4’	1,96 m, 2H	39.8	C-2’, 3’, 5’, 6’, 9’	2’, 6’
5’	2.04 m (8.3, 7.4, 7.2), 2H	26.7	C-3’, 4’, 6’, 7’	6’
6’	5.07 t (6.8), 1H	124.4	C-5’, 8’, 10’	4’, 5’
7’		131.1
8’	1.64 s, 3H	25.6	C-6’, 7’, 10’
9’	1.76 s, 3H	16.1	C-2’, 3’, 4’	1’
10’	1.56 s, 3H	17.6	C-6’, 7’, 8
OH-3	4.78 bs, 1H
OCH3-8	3.85, 3H	56.9	C-8	7
OH-9	5.69 s, 1H		C-8, 9, 10, 10ª