Table 1.

¹H and ¹³C-NMR data of compound 1 (CD₃OD, δ in ppm, J in Hz).

NO.	13C-NMR (δC a)	1H-NMR (δH b)
1, 1′	133.2	-
2, 2′	110.8	7.03 (d, 1.5)
3, 3′	149.3	-
4, 4′	147.8	-
5, 5′	116.2	6.79 (d, 8.1)
6, 6′	120.5	6.81 (dd, 1.5, 8.1)
7, 7′	86.2	5.25 (d, 2.8), 5.26 (d, 2.8)
8, 8′	60.6	3.34 (dd, 2.8, 6.4)
9, 9′	172.1	-
1′′, 1′′′	131.0	-
2′′, 2′′′	130.7	6.84 (d, 8.4)
3′′, 3′′′	116.2	6.64 (d, 8.4)
4′′, 4′′′	156.8	-
5′′, 5′′′	116.2	6.64 (d, 8.4)
6′′, 6′′′	130.7	6.84 (d, 8.4)
7′′, 7′′′	35.7	2.53 (t, 7.2), 2.59 (t, 7.2)
8′′, 8′′′	42.5	3.17 (t, 7.2), 3.39 (t, 7.2)
3, 3′-OCH3	56.4	3.88 (s)

^a Measured at 150 MHz. ^b Measured at 600 MHz.