Table 1.

¹H NMR^a and ¹³C NMR^b data of 1 in CD₃OD (δ in ppm, J in Hz).

No. of H	1H NMRa	No. of C	13C NMRb
1		1	130.3
2	7.14 (d, J = 8.5 Hz)	2	130.7
3	6.72 (d, J = 8.5 Hz)	3	116.0
4		4	158.2
5	6.72 (d, J = 8.5 Hz)	5	116.0
6	7.14 (d, J = 8.5 Hz)	6	130.7
7	4.45 (2H, s)	7	74.3
1′		1′	136.6
2′	7.26 (d, J = 8.5 Hz)	2′	129.4
3′	7.08 (d, J = 8.5 Hz)	3′	117.7
4′		4′	158.4
5′	7.08 (d, J = 8.5 Hz)	5′	117.7
6′	7.26 (d, J = 8.5 Hz)	6′	129.4
7′	4.54 (2H, s)	7′	64.8
1″	4.88 (d, J = 7.0 Hz)	1″	102.3
2″	3.45 (m)	2″	78
3″	3.36 (m)	3″	71.7
4″	3.60 (m)	4″	77.1
5″	3.45 (m)	5″	74.9
6″a	3.60 (m)	6″	70.4
6″b	3.85 (d, J = 9.5 Hz)

^a500 MHz, in CD₃OD. ^b125 MHz in CD₃OD.