Table 1.

¹H (500 MHz) and ¹³C (125 MHz) NMR data for the isolated compound in MeOD (J in Hz).

Position	δH	δC
2		170.8
3
4	4.48, d, J = 7.8 Hz	40.3
5α	3.98, d, J = 9.3 Hz	57.0
5β	3.27, d, J = 9.9 Hz
6	7.39, s	132.2
7		125.9
8	7.23, d, J = 8.2 Hz	131.8
9	6.66, d, J = 8.1 Hz	114.9
10		158.2
11	6.66, d, J = 8.1 Hz	114.9
12	7.23, d, J = 8.2 Hz	131.8
13		133.5
14	7.05, d, J = 8.0 Hz	127.7
15	6.72, d, J =8.0 Hz	115.3
16		156.1
17	6.72, d, J =8.0 Hz	115.3
18	7.05, d, J = 8.0 Hz	127.7
19	2.98, s	29.0